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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 2950. Отображено 100.
30-08-2012 дата публикации

Fluid treatment system with bulk material beds operated in parallel and method for operating such a system

Номер: US20120216873A1
Автор: Horst Grochowski
Принадлежит: Individual

A fluid treatment system having bulk beds. The fluid to be treated essentially streams from the bottom up through a bulk bed, while the bulk material migrates through the bulk beds in countercurrent to the fluid essentially from the top down. This is accomplished by removing partial quantities of bulk material at the lower end of the bulk bed, and delivering partial quantities of the bulk material to the bulk bed at the top. At least one charging wagon provided with optionally sealable bulk material outlets is able to traverse a charging channel between a charging position and several partial bulk bed release positions above the bulk beds. Provided below the bulk material outlets and the bulk material valve of the charging wagon are bulk material through pipes, the bulk material outlet mouths of which end on bulk material cones of an underlying bulk bed.

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Номер записи: 1
20-09-2012 дата публикации

Device for unloading catalyst from a reactor vessel

Номер: US20120237412A1
Автор: Clifford L. Johns, Dennis Mcandrews, Douglas K. Cornett, Matthew Laughlin, Munaf Chasmawala
Принадлежит: Extundo Inc

A device and method for automatic unloading of particles from the vertical tubes of a chemical reactor automatically feeds a fish tape into the bottom of the vertical tube to contact and dislodge the particles and automatically retracts the fish tape to allow the particles to fall out of the tube.

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Номер записи: 2
20-12-2012 дата публикации

Solids processing valve

Номер: US20120319023A1
Автор: P. Christian Naberhaus
Принадлежит: Individual

A dome valve selectively dispenses a silicon product from a chamber of a vessel. The dome valve comprises a valve body defining a pass-through channel in communication with the chamber of the vessel to allow the silicon product to exit the vessel. The dome valve also comprising a valve seat defining an opening through which the silicon product enters the pass-through channel. The dome valve further comprising a domed body having a semi-hemispherical configuration. The domed body has a sealing surface. The domed body is rotatable between a closed position and an open position for allowing the selective dispensing of the silicon product from the vessel.

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Номер записи: 3
06-03-2014 дата публикации

Internal cyclone for fluidized bed reactor

Номер: US20140065049A1
Автор: Hsueh Sung Tung, Robert Johnson, Terris YANG
Принадлежит: Honeywell International Inc

A fluidized bed reactor comprising a reaction column having a fluid portion; a gas inflow means for flowing a gas upwardly from the fluid portion of the reaction column; a particle feed means for feeding particles to the fluid portion of the reaction column; a cyclone capable of separating particles from the gas flowing upwardly from the fluid portion of the reaction column, the cyclone being located within the reaction column and being in communication with the gas flowing upwardly, wherein the cyclone comprises a cyclone body having an inlet, a gas outlet, and a particle drop port; and a particle discharge pipe having an upper part connected to the particle drop port of the cyclone body, and a lower part, wherein the particle discharge pipe is located substantially outside of the reaction column.

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Номер записи: 4
07-01-2021 дата публикации

Bi-Modal Radial Flow Reactor

Номер: US20210001296A1
Автор: Cameron M. Crager, Vincent dePaul MCGAHEE, William Donald Treleaven
Принадлежит: Chevron Phillips Chemical Co LP

A bi-modal radial flow reactor comprising a cylindrical outer housing surrounding at least five cylindrical, concentric zones, including at least three annulus vapor zones and at least two catalyst zones. The at least two catalyst zones comprise an outer catalyst zone and an inner catalyst zone. The at least three annulus vapor zones comprise an outer annulus vapor zone, a middle annulus vapor zone, and a central annulus vapor zone, wherein the central annulus vapor zone extends along a centerline of the bi-modal radial flow reactor. The outer catalyst zone is intercalated with the outer annulus vapor zone and the middle annulus vapor zone, and the inner catalyst zone is intercalated with the middle annulus vapor zone and the central annulus vapor zone. A removable head cover can be fixably coupled to a top of the cylindrical outer housing to seal a top of the bi-modal radial flow reactor.

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Номер записи: 5
02-01-2020 дата публикации

Enclosure of an FCC Unit Comprising an Inner Support Device Rigidly Connected to Cyclones

Номер: US20200001260A1
Автор: Decker Sébastien, Lesage Romain, Simon Hubert
Принадлежит:

The invention relates to an enclosure () of a fluid catalytic cracking unit in which an inner space is defined by a side wall () having a longitudinal axis extending substantially in the direction of gravity, said enclosure being provided with a plurality of mechanical separation cyclones () located inside the inner space. The enclosure () comprises a supporting device () attached only to the cyclones () by: an annular peripheral support element () extending along the side wall () in a plane perpendicular to the longitudinal axis (X), separated from the side wall by a predetermined clearance; and a plurality of beams () extending in the same plane as the peripheral support element (), the beams being rigidly connected to the peripheral support element and to at least one mechanical separation cyclone by one end or by an attachment part distant from the ends thereof. 116.-. (canceled)17. A chamber of a fluid catalytic cracking unit comprising a lateral wall which delimits an internal volume having a longitudinal axis extending substantially in the direction of gravity , said chamber being provided with a plurality of mechanical separation cyclones situated inside said internal volume , characterized in that said chamber comprises , inside said internal volume , a support device secured only to the mechanical separation cyclones and comprising:a peripheral support element extending along the lateral wall in a plane perpendicular to the longitudinal axis (X), distant from the lateral wall by a predetermined clearance in the plane of the support element,a plurality of beams extending in the same plane as the peripheral support element, the beams being secured to the peripheral support element and to at least one mechanical separation cyclone by an end or by a fixing part distant from its ends.18. The chamber as claimed in claim 17 , characterized in that the support device comprises other beams extending in the same plane as the peripheral support element and chosen ...

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Номер записи: 6
05-01-2017 дата публикации

Conversion of Metal Carbonate into Metal Chloride

Номер: US20170001875A1
Автор: Krause Ralf, Schmid Guenter, TAROATA Dan
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

A method for producing metal chloride MClx− includes reacting metal carbonate in solid form using phosgene, diphosgene and/or triphosgene to form metal chloride MClx−, wherein the metal M is selected from the group containing alkali metals, alkaline earth metals, Al and Zn, Li and Mg, or Li, for example, and x corresponds to the valency of the metal cations. An apparatus for performing such method is also disclosed. 1. A method for producing metal chloride MCl , the method comprising:providing phosgene, diphosgene and/or triphosgene,{'sup': x+', '−, 'sub': 'x', 'reacting metal carbonate as solid with the phosgene, diphosgene and/or triphosgene to produce metal chloride MCl,'}wherein the metal M is selected from the group consisting of the alkali metals, alkaline earth metals, Al and Zn, Li and Mg, and Li, andwherein x indicates the valence of the metal cation.2. The method of claim 1 , further comprising adding M as an additional reactant.3. The method of claim 2 , wherein at least one of:the metal M is used together with the metal carbonate, orphosgene, diphosgene and/or triphosgene is prepared in situ by reaction of chlorine with carbon monoxide.4. The method of claim 1 , further comprising subsequently reacting the metal chloride to produce metal M.5. The method of claim 4 , further comprising reacting the produced metal M at least partly with carbon dioxide to produce metal carbonate claim 4 , to thereby form a metal circuit.6. The method of claim 1 , wherein the reaction is performed in a grid reactor or a mechanically moved fixed-bed reactor or in a cyclone reactor.7. The method of claim 1 , wherein the phosgene claim 1 , diphosgene and/or triphosgene is prepared by the reaction of carbon monoxide and chlorine.8. The method of claim 7 , wherein the carbon monoxide is produced by a reaction of metal carbonate with the metal M and/or from an electrolysis of carbon dioxide.9. An apparatus for reacting metal carbonate as solid with phosgene claim 7 , diphosgene ...

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Номер записи: 7
04-01-2018 дата публикации

CARBON NANOSTRUCTURE PREPARATION METHOD, CARBON NANOSTRUCTURE PREPARED BY MEANS OF SAME, AND COMPOSITE MATERIAL COMPRISING SAME

Номер: US20180002178A1
Автор: Cho Dong Hyun, KIM Ogsin, KIM Uk Yeong, OH Eugene, PARK Hyun Woo, SON Seungyong, Yoon Kwang Woo
Принадлежит:

The present invention relates to a method for producing carbon nanostructures using a fluidized bed reactor. According to the method, some of the as-produced carbon nanostructures remain uncollected and are used as fluidic materials to improve the fluidity in the reactor. The method enables the production of carbon nanostructures in a continuous process. In addition, the fluidity of the catalyst and the fluidic materials in the reactor is optimized, making the production of carbon nanostructures efficient. 1. A method for producing carbon nanostructures , comprising allowing a catalyst and reactant gases comprising a carbon source to flow in a fluidized bed reactor to synthesize carbon nanostructures wherein some of the carbon nanostructures remain uncollected and are used as fluidic materials in the fluidized bed reactor and wherein the residual rate of the fluidic materials is from 0.4 to 0.7 , as calculated by Equation 1:{'br': None, 'Residual rate of carbon nanostructures=Volume of remaining carbon nanostructures/(Volume of initially remaining carbon nanostructures+Volume of as-produced carbon nanostructures)\u2003\u2003[Equation 1]'}2. The method according to claim 1 , wherein the residual rate of carbon nanostructures is determined from the difference in pressure between the bottom and top of the reactor.3. The method according to claim 1 , wherein the residual rate y and the conversion x of the carbon source satisfy the relation given by Equation 2:{'br': None, 'i': 'y=px+q', '[Equation 2]'}where p is a constant from 0.4 to 0.7 and q is a constant from 15 to 30.4. The method according to claim 1 , wherein the amount of the catalyst supplied to the reactor satisfies the relation given by Equation 3:{'br': None, 'i': b', 'a+b, 'Catalyst supply rate=/()≦0.1\u2003\u2003[Equation 3]'}where a is the weight (g) of the carbon nanostructures remaining in the fluidized bed reactor and b is the weight (g) of the catalyst supplied.5. The method according to claim 1 , ...

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Номер записи: 8
05-01-2017 дата публикации

PROCESS FOR CONTINUOUS POLYMERIZATION OF OLEFIN MONOMERS IN A REACTOR

Номер: US20170002113A1
Автор: Banat Yahya, Cevallos-Candau Jose Fernando
Принадлежит:

The invention relates to a system for the continuous polymerization of α-olefin monomers comprising a reactor, a compressor, a cooling unit and an external pipe, wherein the reactor comprises a first outlet for a top recycle stream, wherein the system comprises apparatus, wherein the reactor comprises a first inlet for receiving a bottom recycle stream, wherein the reactor comprises an integral separator, wherein the first inlet of the integral separator is connected to a first outlet, wherein the first outlet for the liquid phase is connected to the second outlet of the reactor for the liquid phase, wherein the external pipe comprises a second inlet for receiving a solid polymerization catalyst, wherein the first outlet of the external pipe is connected to a second inlet of the reactor, wherein the reactor comprises a third outlet, wherein the system comprises a first inlet for receiving a feed. 18400511. A system for the continuous polymerization of one or more α-olefin monomers of which at least one is ethylene or propylene , the system comprising a reactor () , a compressor () , a cooling unit () and an external pipe () for the production of a prepolymer and/or polymer ,{'b': '40', 'wherein the reactor comprises a first outlet for a top recycle stream (),'}wherein the system comprises apparatus for condensing the top recycle stream into a bottom recycle stream,{'b': '10', 'wherein the reactor comprises a first inlet for receiving a bottom recycle stream (),'}{'b': '6', 'wherein the first inlet for receiving the bottom recycle stream is located underneath the distribution plate (),'}{'b': '1', 'wherein the reactor comprises an integral separator () for separation of the bottom recycle stream into a gas/liquid phase and a liquid phase,'}{'b': '6', 'wherein the integral separator is located underneath the distribution plate (),'}wherein the first inlet of the integral separator is connected to a first outlet for a liquid phase,wherein the first outlet for the ...

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Номер записи: 9
13-01-2022 дата публикации

Air Lance for Removing Pellets from Tubes

Номер: US20220008883A1
Автор: Clifford L. Johns, Dennis Patrick MCANDREWS, Paul D. Gossen
Принадлежит: Tubemaster Inc

An air lance for removing pellets from tubes includes a conduit body having an inlet end and a bottommost discharge opening, and a poker fixed relative to the conduit body and projecting beyond the bottommost discharge opening to serve as a spacer and poker; wherein a rigid member extends along said conduit body, such that that a hammering force applied to said rigid member where it extends outside of the tube will be transmitted through said rigid member to said poker for dislodging and breaking pellets.

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Номер записи: 10
12-01-2017 дата публикации

FLUID CATALYTIC CRACKING PROCESS AND APPARATUS FOR MAXIMIZING LIGHT OLEFINS OR MIDDLE DISTILLATES AND LIGHT OLEFINS

Номер: US20170009150A1
Автор: Kumar Pramod, Marri Rama Rao, Soni Dalip Singh
Принадлежит: LUMMUS TECHNOLOGY INC.

A fluid catalytic cracking apparatus and process is disclosed, providing for efficient conversion of heavy hydrocarbon feeds to light olefins, aromatics, and gasoline. A countercurrent flow reactor operating in bubbling or turbulent fluidization regimes is integrated with a fluid catalytic cracking riser reactor. A heavy hydrocarbon feed is catalytically cracked to naphtha and light olefins in the riser reactor, a co-current flow reactor. To enhance the yields and selectivity to light olefins, cracked hydrocarbon products from the riser reactor, such as Cand naphtha range hydrocarbons, may be recycled and processed in the countercurrent flow reactor. The integration of the countercurrent flow reactor with a conventional FCC riser reactor and catalyst regeneration system may overcome heat balance issues commonly associated with two-stage cracking processes, may substantially increase the overall conversion and light olefins yield, and/or may increases the capability to process heavier feedstocks. 117-. (canceled)18. An apparatus for the catalytic cracking of hydrocarbons , comprising:a catalyst regeneration vessel for regenerating a spent catalyst comprising a first cracking catalyst having a first average particle size and density and a second cracking catalyst having a second average particle size and density to form a regenerated catalyst comprising the first cracking catalyst and the second cracking catalyst, wherein the average particle size of the first cracking catalyst is less than the average particle size of the second cracking catalyst;a riser reactor for contacting in co-current flow a first hydrocarbon feed with a first portion of the regenerated catalyst to produce a first effluent comprising a first cracked hydrocarbon product and a spent mixed catalyst fraction;a flow conduit for feeding a second portion of the regenerated catalyst to a second cracking reactor; separate the first cracking catalyst from the second cracking catalyst based on at least ...

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Номер записи: 11
10-01-2019 дата публикации

METHODS, DEVICES AND SYSTEMS FOR PROCESSING OF CARBONACEOUS COMPOSITIONS

Номер: US20190009238A1
Автор: LAINE Scott
Принадлежит:

Provided herein are methods, devices and systems for processing of carbonaceous compositions. The processing may include the manufacture (or synthesis) of oxidized forms of carbonaceous compositions and/or the manufacture (or synthesis) of reduced forms of oxidized carbonaceous compositions. Some embodiments provide methods, devices and systems for the manufacture (or synthesis) of graphite oxide from graphite and/or for the manufacture (or synthesis) of reduced graphite oxide from graphite oxide. 2. The system of claim 1 , further comprising a sensor disposed within the reaction vessel.3. The system of claim 2 , wherein the sensor measures temperature claim 2 , pH claim 2 , or salt concentration.4. The system of claim 3 , wherein the system comprises a control unit configured to maintain a first temperature within the reaction vessel before addition of a catalyst.5. The system of claim 4 , wherein the control unit is configured to modulate a rate of addition of the catalyst into the reaction vessel to maintain a second temperature that is different from the first temperature inside the reaction vessel.6. The system of claim 4 , wherein the control unit is configured with a pre-programmed protocol for controlling the conversion of graphite into graphene oxide.7. The system of claim 1 , wherein the system modulates a rate of addition of one or more reactants into the reaction vessel to maintain a reaction temperature no greater than 15° C.8. The system of claim 1 , wherein the system comprises one or more cooling coils for reducing a reaction temperature inside the reaction vessel.9. The system of claim 8 , wherein the system is configured to dispense chilled water into the tank to lower the temperature of the graphene oxide.10. The system of claim 1 , wherein the reaction vessel and the tank are in fluid communication claim 1 , and the reaction vessel is positioned at a higher position relative to the tank to enable transfer of the graphene oxide from the reaction ...

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Номер записи: 12
03-02-2022 дата публикации

PROCESS AND APPARATUS FOR REACTING FEED WITH FLUIDIZED CATALYST AND CONFINED QUENCH

Номер: US20220033326A1
Автор: Davydov Lev, II Richard A., Johnson
Принадлежит:

A dehydrogenation process and apparatus contact a paraffinic stream with dehydrogenation catalyst to product olefinic product gases. The olefinic product gases are separated from spent dehydrogenation catalyst and contained in a confined space that has a smaller volume than the reactor particularly at the same elevation. The containment of the olefinic product gases facilitates quenching the olefinic product gases to terminate reaction and improve selectivity to propylene. 1. A process for contacting a paraffin stream with dehydrogenation catalyst comprising:distributing a paraffin stream to a reactor;contacting said reactant stream with a dehydrogenation catalyst stream to produce olefinic product gases and spent dehydrogenation catalyst;separating a spent dehydrogenation catalyst stream from an olefinic product gas stream in a primary separator;containing said olefinic product gas in a contained space having a volume smaller than the volume of the reactor at the same elevation;quenching said olefinic product gases in said contained space; anddischarging said olefinic product gases from said reactor.2. The process of wherein said contained space has a wall that is spaced apart from a shell of the reactor.3. The process of further comprising a plurality of cyclone separators in said separation chamber and ducting said olefinic product gases from said contained space into said cyclone separators.4. The process of further comprising separating a spent dehydrogenation catalyst from said olefinic product gases in said cyclone separators and dispensing said dehydrogenation catalyst by dip legs of said cyclone separators through a baffle into a dense dehydrogenation catalyst bed.5. The process of wherein said spent dehydrogenation catalyst stream separated from said olefinic product gases in said primary separator falls into said dense dehydrogenation catalyst bed.6. The process of wherein said spent dehydrogenation catalyst stream separated from said olefinic product ...

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Номер записи: 13
19-01-2017 дата публикации

MOVING BED CATALYTIC REACTOR FOR MANAGING INTERRUPTIONS TO THE CIRCULATION OF CATALYST, AND PROCESS USING SAID REACTOR

Номер: US20170014791A1
Автор: LAMBERT Fabian
Принадлежит: AXENS

The present invention describes a catalytic reactor operating as a moving bed to manage interruptions in the circulation of catalyst while at the same time avoiding mechanical damage to the contact means containing the catalyst. The invention also concerns a refining or petrochemicals process using the reactor in accordance with the invention. 1571351157. A catalytic reactor employing a moving bed catalyst , in which the catalyst is enclosed in baskets () and in which said baskets are movable along a substantially vertical axis and provided with flaps ( , ) which are themselves substantially vertical , installed in the lower portion of said baskets () , and in which , during an interruption to the circulation of catalyst , a storage space () for catalyst located in the lower portion of the reactor is opened up by lifting the assembly of the basket () and the attached flaps () upwards.2. The catalytic reactor according to claim 1 , in which circulation of the catalyst under gravity is resumed as soon as the circulation is re-established.35553. The moving bed catalytic reactor according to claim 1 , in which the catalyst is enclosed in baskets () which are annular in shape claim 1 , wherein the walls are constituted by screens which allow the feed to pass from the exterior towards the interior of the basket () claim 1 , then the reaction effluents to pass from the interior of the basket () towards a centre pipe ().4713121412145141112. The moving bed catalytic reactor according to claim 1 , in which the flaps ( claim 1 , ) slide in vertical sleeves () and are provided with windows () which are obstructed by the sleeves () during normal circulation claim 1 , said windows () being opened up when the basket () is lifted following an interruption to the circulation claim 1 , thus allowing the catalyst to pass through said windows () towards a storage zone () located in the lower portion of the reactor between the sleeve () and the wall of the catalyst.51411. The moving bed ...

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Номер записи: 14
19-01-2017 дата публикации

SYNGAS PRODUCTION VIA CYCLIC REDUCTION AND OXIDATION OF METAL OXIDES

Номер: US20170015554A1
Автор: DeVault Douglas J., Flynn Thomas J., Siengchum Tritti, Velazquez-Vargas Luis G.
Принадлежит:

A chemical-looping system utilizes oxygen-carrier particles to produce syngas from carbonaceous fuels. The system provides a circuitous flow path for the oxygen-carrier particles, which are used to partially oxidize the fuel to produce syngas. The circuitous flow path can proceed through a plurality of unit operations, including a reducer, a conversion reactor, an oxidizer, and a combustor. The conversion reactor is designed to partially oxidize carbonaceous fuel in co-current flow with the oxygen-carrier particles to produce syngas. In embodiments including an oxidizer, the oxidizer is designed to at partially re-oxidize the carrier particles, yielding hydrogen that can be mixed with partially oxidized products from the conversion reactor to adjust syngas quality. The combustor can be used to fully oxidize the carrier particles traveling in a closed loop. Reactions carried out in the combustor are highly exothermic and yield thermal energy that is absorbed by the carrier particles. The absorbed energy is used at other parts of the process, including the conversion reactor, to drive endothermic reactions. In this manner the system can be operated autothermally or nearly so. Methods of producing syngas are also disclosed. 1. A system comprising:a circuitous flow pathway for oxygen-carrier particles, said pathway proceeding through a plurality of unit operations comprising a reducer, a conversion reactor, and a combustor;said reducer configured to at least partially reduce said oxygen-carrier particles;said conversion reactor configured to react said oxygen-carrier particles with a carbonaceous fuel via co-current flow to yield incomplete-oxidation products comprising carbon monoxide and hydrogen; andsaid combustor configured to receive said oxygen-carrier particles in a partially or fully reduced state and to fully re-oxidize said oxygen-carrier particles.2. The system of claim 1 , said plurality of unit operations further comprising an oxidizer configured to receive ...

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Номер записи: 15
21-01-2016 дата публикации

REACTORS, SYSTEMS, AND METHODS FOR FORMING SOLID PRODUCTS

Номер: US20160016800A1
Автор: Noyes Dallas B.
Принадлежит: Seerstone LLC

A reactor includes a vessel, a gas inlet, a solid outlet, a catalyst support configured to at least partially retain a catalyst material and allow a tail gas to pass therethrough, and a tail gas outlet. The gas inlet is in fluid communication with the solid outlet. A system for producing a solid product includes a reactor, a compressor, a heater, a make-up reactive gas inlet, and a solids discharge means for removing the solid product from the solid outlet of the reactor. Methods of forming solid products include providing a catalyst material in a vessel having a porous catalyst support, delivering a reactive gas to the vessel, reacting the reactive gas to form a solid product and a tail gas in the vessel, passing the tail gas through a portion of the catalyst material to separate the solid product from the tail gas, and removing the solid product.

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Номер записи: 16
17-01-2019 дата публикации

Catalyst Transfer Pipe Plug Detection

Номер: US20190015806A1
Автор: Gellaboina Mahesh Kumar, Lattanzio Louis A.
Принадлежит:

Apparatuses and methods are disclosed for detecting catalyst transfer pipe plugging in a chemical plant or petrochemical plant or refinery. The catalyst transfer pipe may extend from a reactor to a catalyst collector and enable the flow of catalyst from the reactor to the catalyst collector. Specifically, one or more sensors affixed to a catalyst transfer pipe may collect sensor data for analysis. Based on one or more detected changes in the sensor data outside a range, a data collection platform may send one or more alerts and/or send one or more signals to a control platform to adjust a flow rate, a pressure differential, or perform another action to clear a developing catalyst buildup and thereby attempt to avoid a catalyst transfer pipe from becoming plugged. 1. A system for detecting catalyst-transfer-pipe plugging , the system comprising:a reactor configured for a dehydrogenation process, wherein the reactor is configured for use with a solid catalyst;a catalyst collector comprising a valve, the catalyst collector configured to collect the solid catalyst;a catalyst transfer pipe extending from the reactor to the catalyst collector, the catalyst transfer pipe configured to enable flow of the solid catalyst from the reactor to the catalyst collector;one or more sensors affixed to an outside of the catalyst transfer pipe; and one or more processors; and', receive sensor data collected by the one or more sensors affixed to the catalyst transfer pipe;', 'analyze the sensor data to determine a flow rate through the catalyst transfer pipe; and', 'based on analyzing the sensor data to determine the flow rate through the catalyst transfer pipe, transmit a command to adjust the flow rate through the catalyst transfer pipe by adjusting the valve of the catalyst collector., 'non-transitory computer-readable memory storing executable instructions that, when executed, cause the computing device to], 'a computing device comprising2. The system of claim 1 , wherein the ...

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Номер записи: 17
16-01-2020 дата публикации

Use of Light Gas By-Products in the Production of Paraxylene by the Methylation of Toluene and or Benzene

Номер: US20200017425A1
Автор: Detjen Todd E, Tinger Robert G.
Принадлежит:

A process for producing paraxylene by the catalytic alkylation of benzene and/or toluene with methanol, which produces a para-rich mixture of xylene isomers, together with water and some light organic by-products, particularly dimethyl ether and C− olefins. The off-gas stream, containing the C olefins, may be recycled back to the reaction to be co-injected with methanol to reduce the methanol self-decomposition and the reaction of methanol to olefins or to fluidize catalyst particles recovered by a reactor cyclone. By using recycled off-gas rather than water or steam, the deleterious effects of water and/or steam on the catalyst aging and activity rates and the size of downstream equipment necessary to recover olefin by-products may be reduced. 1. A process for the alkylation of toluene and/or benzene to produce paraxylene (PX) comprising contact of said toluene and/or benzene with an alkylating agent selected from methanol , dimethyl ether , and mixtures thereof , in the presence of an alkylation catalyst in a fluidized bed alkylation reactor under conditions effective to produce an alkylation effluent comprising PX and olefins , wherein the alkylation effluent is separated into a stream comprising PX and a light gas stream comprising olefins , the improvement comprising recycling at least a portion of the light gas stream , including olefins , to the alkylation reactor for injection with alkylating agent , fluidizing particles of the alkylation catalyst recovered from the alkylation effluent , or both.2. The process of claim 1 , wherein the light gas stream further comprises oxygenates claim 1 , unreacted alkylating agent claim 1 , and contaminants claim 1 , and is treated to remove at least one of the oxygenates claim 1 , alkylating agent claim 1 , and contaminants prior to recycling the light gas stream to the alkylation reactor.3. The process of claim 1 , wherein the alkylating agent is methanol.4. The process of claim 3 , wherein the methanol and recycled ...

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Номер записи: 18
16-01-2020 дата публикации

METHODS FOR MAKING LIGHT OLEFINS FROM DIFFERENT FEED STREAMS

Номер: US20200017427A1
Автор: Pretz Matthew T.
Принадлежит: Dow Global Technologies LLC

According to one or more embodiments of the present disclosure, chemical streams may be processed by a method which may comprise operating a first chemical process, stopping the first chemical process and removing the first catalyst from the reactor, and operating a second chemical process. The reaction of the first chemical process may be a dehydrogenation reaction, a cracking reaction, a dehydration reaction, or a methanol-to-olefin reaction. The reaction of the second chemical process may be a dehydrogenation reaction, a cracking reaction, a dehydration reaction, or a methanol-to-olefin reaction. The first reaction and the second reaction may be different types of reactions. 2. The method of claim 1 , wherein the first product stream and the second product stream comprise one or more of ethylene claim 1 , propylene claim 1 , or butene.3. The method of claim 1 , wherein the first reaction or the second reaction is a dehydrogenation reaction claim 1 , and the first catalyst or the second catalyst comprises gallium claim 1 , platinum claim 1 , or both.4. The method of claim 1 , wherein:the first reaction or the second reaction is a dehydrogenation reaction; andthe first feed stream or the second feed stream comprises one or more of ethane, propane, n-butane, and i-butane.5. The method of claim 1 , wherein the first reaction or the second reaction is a cracking reaction claim 1 , and the first catalyst or the second catalyst comprises one or more zeolites.6. The method of claim 1 , wherein:the first reaction or the second reaction is a cracking reaction; andthe first feed stream or the second feed stream comprises one or more of naphtha, n-butane, or i-butane.7. The method of claim 1 , wherein the first reaction or the second reaction is a dehydration reaction claim 1 , and the first catalyst or second catalyst comprises one or more acid catalysts.8. The method of claim 1 , wherein:the first reaction or the second reaction is a dehydration reaction;the first feed ...

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Номер записи: 19
28-01-2016 дата публикации

POWDER STIRRING DEVICE

Номер: US20160023177A1
Автор: Tanaka Noriyuki
Принадлежит: TOYO TANSO CO., LTD.

A powder stirring device includes a reaction container and a rotation driving device. The reaction container has a cylindrical outer peripheral wall and a pair of end surface walls. The end surface walls are respectively provided at one end and the other end of the outer peripheral wall. The reaction container is arranged in a heat-insulating cover such that an axis of the outer peripheral wall is in parallel with a horizontal direction. The outer peripheral wall has an inner peripheral surface rotationally symmetric with respect to the axis. During the powder process, the powder is stored in the reaction container, and the reaction container is rotated around a rotation axis that passes through the central axis of the outer peripheral wall by the rotation driving device. In this state, a processing gas is supplied into the reaction container. Also, the processing gas in the reaction container is discharged. 1. (canceled)2. A powder processing apparatus that processes powder using a processing gas , comprising:a powder transport path that has a strip-shaped transporter that extends spirally in a vertical direction and on which the powder moves;a powder supplier for supplying the powder to the powder transport path;a vibration applier that vibrates the powder transport path to move the powder supplied to the powder transport path along the strip-shaped transporter;a processing container in which the powder supplied to the powder transport path is processed by the processing gas while moving;a powder recoverer that recovers the processed powder; andat least one height limitation member that limits a height of the powder moving on the strip-shaped transporter.3. The powder processing apparatus according to claim 2 , wherein the height limitation member has a lower end that is opposite to the strip-shaped transporter claim 2 , and is arranged such that a clearance is formed between the lower end and the strip-shaped transporter.4. The powder processing apparatus ...

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Номер записи: 20
25-01-2018 дата публикации

COLD REGENERATED CATALYST CIRCULATION METHOD AND DEVICE THEREFOR

Номер: US20180021769A1
Автор: Li Qunzhu
Принадлежит:

The present invention provides a method of cooling and cycling a regenerated catalyst. The regenerated catalyst that is from the regenerator is cooled by the catalyst cooler to 200-720° C., and without being mixed with the hot regenerated catalyst directly enters a riser reactor, or mixes with another part of hot regenerated catalyst that has not been cooled to obtain a mixed regenerated catalyst with a temperature below the regenerator temperature, and enters the riser reactor. The hydrocarbon raw material performs the contact reaction with the catalyst in the riser reactor, a reactant stream enters a settler to perform a separation of the catalyst and an oil gas, the separated spent catalyst is steam stripped by a steam stripping section and enters a regenerator to be charring regenerated, and the regenerated catalyst after being cooled returns to the riser reactor to be circularly used. The bottom of each of the catalyst coolers is provided with at least one fluidized medium distributor, the range of the superficial gas velocity is 0-0.7 m/s (preferably 0.005-0.3 m/s, and most preferably 0.01-0.15 m/s), and the temperature of the cold regenerated catalyst is controlled mainly by adjusting a flow rate of the fluidized medium. The method of cooling and cycling a regenerated catalyst of the present invention has extensive application, and can be used for various fluidized catalytic cracking processes, including heavy oil catalytic cracking, wax oil catalytic cracking, gasoline catalytic conversion reforming and the like, and can also be used for other gas-solid reaction processes, including residual oil pretreating, methanol to olefin, methanol to aromatics, methanol to propylene, fluid coking, flexicoking and the like. 1. A cycling method of cold regenerated catalyst , comprising a fluidized catalytic cracking process , wherein: a hydrocarbon raw material performs a contact reaction with a catalyst in a riser reactor having or not having a fluidized bed reactor , a ...

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Номер записи: 21
25-01-2018 дата публикации

SYSTEMS AND METHODS FOR PROVIDING FEED MATERIAL TO A PRESSURIZED SYSTEM

Номер: US20180022556A1
Автор: POWELL Joseph Broun, TREPTE Robert Edward
Принадлежит:

Methods and systems for transferring feed materials between zones having substantially different pressures, where the transfer can be continuous or semi-continuous. The methods and systems include a plurality of lock hoppers to receive feed material from a low pressure zone and pressurize it with fluid to a pressure of a high pressure zone. The pressurized material can be discharged to a circulation loop, which carries the pressurized material to one or more receiving unit(s) of a pressurized system. At least some feed material remains in the receiving unit(s) and at least a portion of the fluid exits to become part of the circulation loop. After discharge, the lock hoppers can be depressurized so the next pressurization cycle can begin with additional feed material. The lock hoppers can be operated in a time-staggered manner to provide continuous or semi-continuous transfer of material. 1. A method for transferring material from a low pressure zone to a high pressure zone comprising:(a) providing feed material to a first lock hopper;(b) closing a valve coupled to an inlet of said first lock hopper;(c) after step (b), providing fluid to said first lock hopper to pressurize the first lock hopper;(d) after the first lock hopper is pressurized, opening a valve coupled to an outlet of said first lock hopper;(e) releasing pressurized content comprising fluid and feed material from the first lock hopper to a circulation loop via said outlet, which is in fluid communication with said circulation loop;(f) providing feed material to a second lock hopper;(g) closing a valve coupled to an inlet of said second lock hopper;(h) after step (g), providing fluid to said second lock hopper to pressurize the second lock hopper;(i) opening a valve coupled to an outlet of said second lock hopper;(j) releasing pressurized content comprising fluid and feed material from the second lock hopper to the circulation loop via said outlet, which is in fluid communication with said circulation ...

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Номер записи: 22
25-01-2018 дата публикации

System and Method for Preparing High-Purity Vanadium Pentoxide Powder

Номер: US20180022616A1
Автор: BAN Qixun, FAN Chuanlin, LIU Jibin, MU Wenheng, WANG Cunhu, ZHU Qingshan
Принадлежит:

The present invention provides a system and method for preparing high-purity vanadium pentoxide powder. Industrial grade vanadium pentoxide is converted to vanadium oxytrichloride by low temperature fluidizing chlorination, wherein chlorinating gas is preheated via heat exchange between fluidizing gas and chlorination flue gas, and an appropriate amount of air is added to enable a part of carbon powder to combust so as to achieve a balanced heat supply during the chlorination, thereby increasing the efficiency of chlorination and ensuring good selectivity in low temperature chlorination. The vanadium oxytrichloride is subjected to purification by rectification, ammonium salt precipitation and fluidized calcination, thereby obtaining high-purity vanadium pentoxide, wherein the ammonia gas produced during calcination is condensed and then recycled for ammonium salt precipitation. The system and method have advantages of favorable adaptability to raw material, less pollution, low energy consumption in production, low operation cost, stable product quality, etc. 1. A system for preparing high-purity vanadium pentoxide powder , comprising a feeding device , a low temperature chlorination fluidized bed , a rectification and purification device , an ammonium salt precipitation device , an ammonium salt feeding device , a calcination fluidized bed , a tail gas washing absorber , an induced draft fan and a chimney;wherein the feeding device comprises an industrial grade vanadium pentoxide hopper, an industrial grade vanadium pentoxide screw feeder, a carbon powder hopper and a carbon powder screw feeder;the low temperature chlorination fluidized bed comprises a chlorination bed feeder, a chlorination fluidized bed body, a chlorination bed cyclone separator, a flue gas heat exchanger, a flue gas condenser, a chlorination bed acid-seal tank and a chlorination bed spiral slag-discharging device;the rectification and purification device comprises a distilling still, a rectifying ...

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Номер записи: 23
04-02-2016 дата публикации

FCC UNITS, SEPARATION APPARATUSES, AND METHODS FOR SEPARATING REGENERATED CATALYST

Номер: US20160030906A1
Автор: Crnkovic Miladin, II Richard A., Johnson, Lorsbach Thomas William, Palmas Paolo
Принадлежит:

Apparatuses and methods for separating regenerated catalyst are provided. In one embodiment, an apparatus for separating regenerated catalyst includes a regeneration vessel including a catalyst bed section. The apparatus includes a catalyst settler physically separated from the catalyst bed section by a wall extending within the regeneration vessel. The catalyst overflowing the catalyst bed section flows over the wall and enters the catalyst settler. The apparatus further includes a pipe in fluid communication with the catalyst settler and configured to deliver regenerated catalyst from the regeneration vessel to another vessel. 1. An apparatus for separating regenerated catalyst , the apparatus comprising:a regeneration vessel comprising a catalyst bed section;a catalyst settler physically separated from the catalyst bed section by a wall extending within the regeneration vessel, wherein the catalyst overflowing the catalyst bed section flows over the wall and enters the catalyst settler; anda pipe in fluid communication with the catalyst settler and configured to deliver regenerated catalyst from the regeneration vessel to another vessel.2. The apparatus of wherein the catalyst settler is located in the regeneration vessel.3. The apparatus of wherein the catalyst settler is bounded by the regeneration vessel.4. The apparatus of further comprising a catalyst settler baffle within the catalyst settler.5. The apparatus of further comprising packing within the catalyst settler.6. The apparatus of further comprising an injection port in the catalyst settler configured to inject a gas into the catalyst settler and into contact with the regenerated catalyst to separate entrained gas therefrom.7. The apparatus of further comprising a nitrogen or steam source in fluid communication with the injection port claim 6 , wherein the injection port is configured to inject nitrogen or steam into the catalyst settler and into contact with the regenerated catalyst to separate ...

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Номер записи: 24
24-04-2014 дата публикации

Method and apparatus for discharging a polymer from a gas-phase reactor

Номер: US20140114038A1
Автор: Axel Hamann, Klaus Berhalter, Manfred Hecker, Paulus-Petrus Maria De Lange, Thomas Andreas HORA
Принадлежит: BASELL POLYOLEFINE GMBH

Process for discharging polyolefin particles from a gas-phase polymerization reactor of a pressure from 1.0 MPa to 10 MPa to a discharge vessel of a pressure from 0.1 MPa to 1.0 MPa wherein the discharging is carried out discontinuously through at least two discharge lines in which the polyolefin particles are transported horizontally or upwards, process for polymerizing olefins at temperatures of from 30° C. to 160° C. and pressures of from 1.0 MPa to 10 MPa in the presence of a polymerization catalyst in a gas-phase polymerization reactor comprising discharging the obtained polyolefin particles from the gas-phase polymerization reactor by the process for discharging polyolefin particles and apparatus for polymerizing olefins in the gas-phase comprising a polymerization reactor, a discharge vessel and at least two pipes connecting the polymerization reactor and the discharge vessel for discharging polyolefin particles, wherein the discharge lines are constructed in a way that the polyolefin particles conveyed from the polymerization reactor to the discharge vessel are transported horizontally or upwards.

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Номер записи: 25
31-01-2019 дата публикации

Device for Filling a Tube with Particulate Filling Material

Номер: US20190030505A1
Автор: Cota Aldo
Принадлежит:

The present invention relates to a device for gently and uniformly filling a tube, in particular a tubular reactor, with particulate filling material, in particular catalyst particles; wherein the device comprises specially designed fall arrester elements and also comprises means which reduce the wear of the fall arrester elements; and method for filling a tube using these articles. 1. A device for filling a tube with particulate filling material , comprising at least one fall arrester element that is fastened to a carrier and is introducible together with the carrier into the tube to be filled; wherein the at least one fall arrester element carries a net structure that is permeable to the filling-material particles , wherein the net structure comprises a multiplicity of elastic net elements and the filling-material deflector is arranged above the net structure; and wherein the net structure comprises a central body which carries the net elements;characterized in that,above the at least one fall arrester element, a filling-material deflector radially enclosing the carrier is arranged, the outside diameter of said filling-material deflector being less than the inside diameter of the tube to be filled, wherein the filling-material deflector is formed as an umbrella-like, substantially radially symmetric structure with a lateral surface that drops substantially uniformly toward the outside, and protects the central region of the at least one fall arrester element from being struck directly by filling-material particles during a filling operation, wherein the central region comprises the body and the inner portion of the net elements, via which the latter are fastened to the body.2. The device as claimed in claim 1 , wherein the central region has 90 to 10% of the radial diameter (d) of the fall arrester element.3. The device as claimed in claim 1 , wherein the central region has 40 to 20% of the radial diameter (d) of the fall arrester element.4. The device as claimed ...

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Номер записи: 26
31-01-2019 дата публикации

TAPERED FLUIDIZED BED REACTOR AND PROCESS FOR ITS USE

Номер: US20190030506A1
Автор: Bucci John V., Cocco Raymond Anthony, Dehtiar Max E., Harder Patrick J., Karri S.B. Reddy, Knowlton Ted M., Molnar Michael J.
Принадлежит:

A fluidized bed reactor includes a gas distributor, a tapered section above the gas distributor, and an expanded head above the tapered section. The gas distributor defines a plurality of inlets surrounding a product withdrawal tube, which extends away from the fluidized bed reactor. The fluidized bed reactor is useful in a process for fluidizing relatively large particles, such as Geldart Group B particles and/or Geldart Group D particles, where said particles are in a bubbling fluidized bed residing, in whole or in part, in the tapered section. The fluidized bed reactor and process may be used for manufacturing polycrystalline silicon. 1. A process for preparing polycrystalline silicon in a fluidized bed reactor , where the process comprises:feeding gases comprising hydrogen and a silicon bearing source gas comprising a silicon monomer into a bubbling fluidized bed containing silicon particles, where at least a portion of the bubbling fluidized bed resides in a tapered section of the fluidized bed reactor, where the tapered section expands upward and outward at a cone angle from vertical;feeding silicon particles into the fluidized bed reactor above the tapered section;heating the fluidized bed reactor, thereby causing thermal decomposition of the silicon monomer to produce polycrystalline silicon on surfaces of the silicon particles, thereby producing larger diameter particles; andremoving the larger diameter particles from the fluidized bed reactor.2. The process of claim 1 , where the cone angle ranges from 2.5° to 10.0°.3. The process of claim 1 , where the silicon bearing source gas comprises HSiCland optionally SiCl.4. The process of claim 1 , where the silicon bearing source gas comprises HSiBrand optionally SiBr.5. The process of claim 1 , where the silicon bearing source gas comprises SiH.6. The process of claim 1 , wherein i. a product withdrawal tube is mounted to the gas distributor,', 'ii. the gas distributor defines a plurality of feed inlets, and', ...

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Номер записи: 27
04-02-2021 дата публикации

Multiple Reactor and Multiple Zone Polyolefin Polymerization

Номер: US20210032380A1
Автор: CURREN Joseph A., DESLAURIERS Paul J., Fodor Jeffrey S., GONZALES Rebecca A., Kufeld Scott E., MUTCHLER Joel A., NETEMEYER Eric J., SUTHERLAND Jamie N.
Принадлежит:

Apparatuses and processes that produce multimodal polyolefins, and in particular, polyethylene resins, are disclosed herein. This is accomplished by using two reactors in series, where one of the reactors is a multi-zone circulating reactor that can circulate polyolefin particles through two polymerization zones optionally having two different flow regimes so that the final multimodal polyolefin has improved product properties and improved product homogeneity. 1. A trimodal polyethylene resin having a low molecular weight (LMW) component , an intermediate molecular weight (IMW) component , and a high molecular weight (HMW) component; wherein the LMW component is present in an amount of from about 20 wt. % to about 75 wt. %; wherein the IMW component is present in an amount of from about 5 wt. % to about 40 wt. %; wherein the LMW component has a weight average molecular weight of from about 20 kg/mol to about 150 kg/mol; wherein the IMW component has a weight average molecular weight of from about 85 kg/mol to about 350 kg/mol; wherein the weight average molecular weight of the IMW component is greater than the weight average molecular weight of the LMW component; wherein the weight average molecular weight of the HMW component is greater than the weight average molecular weight of the IMW component; wherein the trimodal polyethylene resin has a Young's modulus (E) of equal to or greater than about 900 MPa , when tested in accordance with ASTM D638; and wherein the trimodal polyethylene resin has a density of equal to or greater than about 0.952 g/cc , when tested in accordance with ASTM D1505.2. The trimodal polyethylene resin of claim 1 , wherein the trimodal polyethylene resin has a melt index of less than about 1 g/10 min claim 1 , when tested in accordance with ASTM D1238 under a force of 2.16 kg.3. The trimodal polyethylene resin of claim 1 , wherein the trimodal polyethylene resin has a density of equal to or greater than about 0.955 g/cc claim 1 , when tested ...

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Номер записи: 28
18-02-2016 дата публикации

JOINT DESIGN FOR SEGMENTED SILICON CARBIDE LINER IN A FLUIDIZED BED REACTOR

Номер: US20160045880A1
Автор: Miller Matthew J., Onstot William J., Spangler Michael V., Stupin Walter J., Zeininger Gerald A.
Принадлежит: REC SILICON INC

Segmented silicon carbide liners for use in a fluidized bed reactor for production of polysilicon-coated granulate material are disclosed, as well as methods of making and using the segmented silicon carbide liners. Non-contaminating bonding materials for joining silicon carbide segments also are disclosed. One or more of the silicon carbide segments may be constructed of reaction-bonded silicon carbide. 1. A segmented silicon carbide liner for a fluidized bed reactor for production of polysilicon-coated granulate material , comprising:a first silicon carbide segment having a first segment upper edge surface defining one of an upwardly opening first segment depression or an upwardly extending first segment protrusion;a second silicon carbide segment located above and abutted to the first silicon carbide segment, the second silicon carbide segment having a second segment lower edge surface defining a downwardly opening second segment depression if the first segment upper edge surface defines an upwardly extending first segment protrusion or a downwardly extending second segment protrusion if the first segment upper edge surface defines an upwardly opening first segment depression, the protrusion being received within the depression and having smaller dimensions than the depression such that the surface of the depression is spaced apart from the surface of the protrusion and a space is located between the protrusion and the depression; anda volume of bonding material comprising a lithium salt, the bonding material disposed within the space between the protrusion and the depression.2. The segmented silicon carbide liner of claim 1 , wherein:the first silicon carbide segment comprises a first tubular wall having an annular upper surface, the first segment upper edge surface being at least a portion of the annular upper surface, and the first segment depression is a groove that is defined by and extends along at least a portion of the first segment upper edge surface or ...

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Номер записи: 29
18-02-2021 дата публикации

SYSTEM AND METHOD FOR PERFORMING SEPARATION AND DEHYDROXYLATION OF FUMED SILICA SOOT PARTICLES

Номер: US20210047189A1
Автор: Dixit Shivi, Gaikwad Sandeep, Gomatam Badri
Принадлежит:

The present disclosure provides a separator system for performing separation and dehydroxylation of fumed silica particles. The separator system includes a first inlet, a second inlet, a main body, a first outlet and a second outlet. The first inlet collects a primary feed of fumed silica particles from a gaseous stream into a double entry cyclone. The second inlet collects a secondary feed of chlorine gas into the double entry cyclone. The main body of the double entry cyclone is utilized in treating the primary feed and the secondary feed along with heat inside the double entry cyclone. Furthermore, the first outlet is utilized for releasing the dehydrated fumed silica particles and the second outlet is utilized for releasing the water molecules and other gases. 1. A method for performing separation of fumed silica particles , the method comprising:collecting a primary feed of fumed silica particles from a gaseous stream, wherein the primary feed of fumed silica particles is collected in a fluidized state;collecting a secondary feed of chlorine gas, wherein the secondary feed of chlorine gas is collected for performing separation of the fluidized fumed silica particles;treating the primary feed of the fumed silica particles and the secondary feed of chlorine gas along with heat; andreleasing the dehydrated fumed silica particles from a first outlet, whereby separating the fumed silica particles.2. The method as recited in claim 1 , wherein the primary feed of fumed silica particles from a gaseous stream is collected into a double entry cyclone from a first inlet.3. The method as recited in claim 1 , wherein collecting the secondary feed of chlorine gas into the double entry cyclone from a second inlet.4. The method as recited in further comprising claim 1 , after performing separation of the fumed silica particles claim 1 , releasing water molecules and gases from a second outlet.5. A separator system for performing separation and dehydroxylation of fumed silica ...

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Номер записи: 30
18-02-2021 дата публикации

High severity fluidized catalytic cracking systems and processes for producing olefins from petroleum feeds

Номер: US20210047573A1
Автор: Abdennour Bourane, Ibrahim Abba, Raed Abudawoud
Принадлежит: Saudi Arabian Oil Co

Systems and processes are disclosed for producing petrochemical products, such as ethylene, propene and other olefins from crude oil in high severity fluid catalytic cracking (HSFCC) units. Processes include separating a crude oil into a light fraction and a heavy fraction, cracking the light fraction and heavy fraction in separation cracking reaction zones, and regenerating the cracking catalysts in a two-zone regenerator having a first regeneration zone for the first catalyst (heavy fraction) and a second regeneration zone for the second catalyst (light fraction) separate from the first regeneration zone. Flue gas from the first catalyst regeneration zone is passed to the second regeneration zone to provide additional heat to raise the temperature of the second catalyst of the light fraction side. The disclosed systems and processes enable different catalysts and operating conditions to be utilized for the light fraction and the heavy fraction of a crude oil feed.

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Номер записи: 31
15-02-2018 дата публикации

ULTRA LOW PRESSURE CONTINUOUS CATALYST TRANSFER WITH LOCK HOPPER

Номер: US20180043326A1
Автор: Austin Kyle P., Brabson Charles, Gaicki Richard, Gattupalli Rajeswar, Naunheimer Christopher, Vetter Michael J.
Принадлежит:

An apparatus is presented for the transferring of catalyst from an upstream vessel to a downstream vessel. The apparatus includes a non-mechanical valve and a transfer line, wherein a lift gas provides for carrying catalyst through the transfer line. The non-mechanical valve has a catalyst inlet and a lift gas inlet to provide for a consistent flow of catalyst and lift gas to the transfer line. 1. An apparatus for the transfer of catalyst comprising:a vessel from a terminal reactor having an inlet and an outlet;a non-mechanical valve having a catalyst inlet in fluid communication with the vessel outlet, at least one lift gas inlet, and an outlet;a transfer line having an inlet in fluid communication with the non-mechanical valve outlet, and an outlet;a first downstream vessel having an inlet in fluid communication with the transfer line, and a gas outlet and a catalyst outlet;a second downstream vessel having an inlet in fluid communication with the first downstream vessel outlet; and an outlet; anda third downstream vessel having an inlet in fluid communication with the second downstream vessel outlet, and an outlet.2. The apparatus of further comprising an impactless elbow disposed in the transfer line and at a position in the transfer line at an elevated position relative to the first downstream vessel.3. The apparatus of wherein the transfer line further includes a second inlet for admitting a second lift gas.4. The apparatus of wherein the second inlet is in a position in the transfer line disposed below the inlet from the non-mechanical valve outlet.5. The apparatus of further comprising;a second non-mechanical valve having an inlet in fluid communication with the third downstream vessel outlet, a lift gas inlet and an outlet.6. The apparatus of further comprising a second transfer line having an inlet in fluid communication with the second non-mechanical valve outlet claim 5 , and an outlet.7. The apparatus of further comprising a second impactless elbow ...

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Номер записи: 32
07-02-2019 дата публикации

SYSTEM AND METHOD FOR PREPARING VANADIUM BATTERY HIGH-PURITY ELECTROLYTE

Номер: US20190044171A1
Автор: BAN Qixun, FAN Chuanlin, LIU Jibin, MU Wenheng, WANG Cunhu, Yang Haitao, ZHU Qingshan
Принадлежит:

A system and method for preparing a vanadium battery high-purity electrolyte, comprising preparing a low-valence vanadium oxide with a valence of 3.5 with liquid phase hydrolysis and fluidization reduction with vanadium oxytrichioride, adding clean water and sulfuric acid for dissolution, and further performing ultraviolet activation to obtain the vanadium electrolyte, for use in an all-vanadium redox flow battery stack. The high-temperature tail gas in the reduction fluidized bed is combusted for preheating the vanadium powder material, to recover the sensible heat and latent heat of the high-temperature tail gas, and the sensible heat of the reduction product is recovered through heat transfer between the reduction product and the fluidized nitrogen gas. An internal member is arranged in the reduction fluidized bed to realize the precise regulation of the valence state of the reduction product, and ultraviolet is used to activate the vanadium ions, improving the activity of the electrolyte. 14. A system for preparing a vanadium battery high-purity electrolyte , comprising a vanadium oxytrichloride storage tank , a liquid phase hydrolysis device , a vanadium pentoxide feeding device , a preheating system () , a reduction fluidized bed , a combustion chamber , a cooling system , a secondary cooling system , a low-valence vanadium oxide feeding device , a dissolution reactor and an activation device;wherein the liquid phase hydrolysis device comprises a liquid phase hydrolysis reaction tank and a washing filter;the vanadium pentoxide feeding device comprises a vanadium pentoxide hopper and a vanadium pentoxide screw feeder;the preheating system comprises a venturi preheater, a primary cyclone preheater, a secondary cyclone preheater and a bag-type dust collector;the reduction fluidized bed comprises a feeder, a bed body, a discharger, a gas heater, a gas purifier and a first cyclone separator;the cooling system comprises a venturi cooler, a cyclone cooler and a ...

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Номер записи: 33
07-02-2019 дата публикации

A SYSTEM AND METHOD FOR PRODUCING HIGH-PURITY AND HIGH-ACTIVITY VANADIUM ELECTROLYTE

Номер: US20190044172A1
Автор: BAN Qixun, FAN Chuanlin, LIU Jibin, MU Wenheng, WANG Cunhu, Yang Haitao, ZHU Qingshan
Принадлежит:

A system and method for producing a high-purity and high-activity vanadium electrolyte, comprising converting high-purity vanadium oxytrichloride into an ammonium salt in a fluidized bed by gas phase ammoniation, then in another fluidized bed, reducing the ammonium salt into a low-valence vanadium oxide having an average vanadium valence of 3.5, adding clean water and sulfuric acid for dissolution, and further performing activation by ultrasound to obtain a 3.5-valence vanadium electrolyte which can be directly used in a new all-vanadium redox flow battery stack. The method of producing an ammonium salt containing vanadium in the fluidized bed by gas phase ammoniation is of short process and high efficiency. Precise regulation of the valence state of the reduction product is implemented by arranging an internal member in the reduction fluidized bed, and ultrasonication is used to activate the vanadium ion, thereby greatly improving the activity of the electrolyte. 1. A system for producing a high-purity and high-activity vanadium electrolyte , comprising a vanadium oxytrichloride storage tank , a gas phase ammoniation fluidized bed , a reduction fluidized bed , a pre-cooling device , a secondary cooling device , a low-valence vanadium oxide feeding device , a dissolution reactor , and an activation device;wherein the gas phase ammoniation fluidized bed comprises a vanadium oxytrichloride vaporizer, a purified ammonia liquor vaporizer, a chloride spray gun, a gas phase ammoniation fluidized bed body, a first cyclone separator, and an ammonium chloride settling tower;the reduction fluidized bed comprises a material valve, a bed body, a discharger, a gas heater, a gas purifier, and a second cyclone separator;the pre-cooling device comprises a cyclone cooler and a third cyclone separator;the low-valence vanadium oxide feeding device comprises a low-valence vanadium oxide hopper and a low-valence vanadium oxide screw feeder;wherein a feed outlet at the bottom of the ...

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Номер записи: 34
07-02-2019 дата публикации

SYSTEM AND METHOD FOR PRODUCING 3.5-VALENCE HIGH-PURITY VANADIUM ELECTROLYTE

Номер: US20190044173A1
Автор: BAN Qixun, FAN Chuanlin, LIU Jibin, MU Wenheng, WANG Cunhu, Yang Haitao, ZHU Qingshan
Принадлежит:

A system and method for producing a 3.5-valence high-purity vanadium electrolyte, comprising hydrolyzing high-purity vanadium oxytrichloride into vanadium pentoxide in a fluidized bed, and reducing vanadium pentoxide into a low-valence vanadium oxide having an average vanadium valence of 3.5 adding water and a sulfuric acid solution under a microwave field applied externally for dissolution at a low temperature, to obtain a 3.5-valence high-purity vanadium electrolyte. The preparation of vanadium pentoxide by means of gas-phase hydrolysis in the fluidized bed is of short process and high efficiency. By providing an internal member within the reduction fluidized bed, the precise regulation of the valence state of the reduction product is achieved, and the special chemical effect of the microwave field is used to promote dissolution of the vanadium oxide and activate the vanadium ions, thereby greatly improving the activity of the electrolyte. 1. A system for producing a 3.5-valence high-purity vanadium electrolyte , comprising a vanadium oxytrichloride storage tank , a gas phase hydrolysis fluidized bed , a vanadium pentoxide feeding device , a preheat dedusting device , a reduction fluidized bed , a primary cooling device , a secondary cooling device , a low-valence vanadium oxide feeding device , a dissolution and activation device a tail gas washing absorber , an induced draft fan and a chimney;wherein the gas phase hydrolysis fluidized bed comprises a vanadium oxytrichloride vaporizer, a clean water vaporize, a chloride spray gun a gas phase hydrolysis fluidized bed body, a hydrolysis fluidized bed discharger, and a hydrochloric acid tail gas absorber;the vanadium pentoxide feeding device comprises a vanadium pentoxide hopper and a vanadium pentoxide screw feeder;the preheat dedusting device comprises a venturi preheater, a first cyclone separator, a cyclone preheater, and a bag-type dust collector;the reduction fluidized bed comprises a feeder, a bed body, a ...

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Номер записи: 35
07-02-2019 дата публикации

SYSTEM AND METHOD FOR PREPARING HIGH PURITY VANADIUM ELECTROLYTE

Номер: US20190044174A1
Автор: BAN Qixun, FAN Chuanlin, LIU Jibin, MU Wenheng, WANG Cunhu, Yang Haitao, ZHU Qingshan
Принадлежит:

A system and method for preparing a high-purity vanadium electrolyte, comprising preparing a low-valence vanadium oxide with vanadium oxytrichloride by ammonium salt precipitation and fluidization reduction, and preparing the high-purity vanadium electrolyte at a low temperature by adding a sulfuric acid solution and clean water under the conditions of ultrasound-assisted dissolution and activation. Efficient utilization of heat is achieved through heat exchange between the ammonium salt and the reduction tail gas and heat exchange between the reduction product and fluidized nitrogen gas. Ammonia gas in the reduction tail gas is recovered for precipitation of vanadium to achieve the recycling of ammonia gas. An internal member is arranged in the reduction fluidized bed to realize the precise regulation of the valence state of the reduction product. Furthermore, ultrasound-assisted dissolution and activation are employed to prepare the vanadium electrolyte at a low temperature, thereby improving the activity of the electrolyte. 1. A system for preparing a high-purity vanadium electrolyte , comprising: a vanadium oxytrichloride storage tank , an ammonium salt precipitating device , an ammonium salt feeding device , a preheating system , a reduction fluidized bed , a cooling system , a secondary cooling device , a low-valence vanadium oxide feeding device , and a dissolution and activation reactor;wherein the ammonium salt precipitating device comprises an ammonium salt precipitating reaction tank and a washing filter;the ammonium salt feeding device comprises an ammonium salt hopper and an ammonium salt screw feeder;the preheating system comprises a primary cyclone preheater, a venturi preheater, a secondary cyclone preheater, and a first cyclone separator;the reduction fluidized bed comprises a feeder, a bed body, a discharger, a gas heater, a gas purifier, and an ammonium chloride settling tower;the cooling system comprises a venturi cooler, a cyclone cooler, and a ...

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Номер записи: 36
03-03-2022 дата публикации

Accelerated cooling process for reactors

Номер: US20220062844A1
Автор: Charles R. DAVIS, Jr., Clay DUNCAN, Jr., Greg A. MULLEK, Jeff W. JOHNS, Maggie A. EAVES
Принадлежит: Chevron USA Inc

A process for shutting down a hydroprocessing reactor and for removing catalyst from the reactor, wherein the reactor includes a quench gas distribution system. The process comprises shutting off hydrocarbon feed to the reactor, stripping hydrocarbons from the catalyst, and cooling the reactor to a first threshold reactor temperature in the range of from 375-425° F. (190-218° C.). At least a portion of circulating gaseous medium flowing to the reactor is then routed through a temporary heat exchanger and cooling the gas to not less than 40° F. (4° C.). Once cooled, mixing the cooled gas with the circulating gaseous medium flowing to the reactor. Continuing steps routing and cooling until a second threshold temperature is reached wherein the reactor temperature is in a range between 120° F. and 250° F. (49° C.-121° C.). The reactor can then be purged with N 2 gas, followed by introducing water into the reactor via the quench gas distribution system. The catalyst can then be safely removed from the reactor.

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Номер записи: 37
25-02-2021 дата публикации

METHOD FOR TRANSPORTING POLYOLEFIN PARTICLES IN A POLYMER CONVEYING SYSTEM

Номер: US20210053019A1
Автор: Havenaar Richard, Laurell Jussi, Partanen Eero, SLEIJSTER Henry, Valonen Jenni
Принадлежит:

The present invention relates to a method for transporting polyolefin particles in a polymer conveying system, comprising the steps of a) Subjecting the polyolefin particles to moist conveying gas to produce wetted polyolefin particles; b) Transporting the wetted polyolefin particles through at least one conveying line; and c) Controlling the amount of moisture in the conveying gas of the polymer conveying system as such that at the end point of the at least one conveying line the relative humidity of the conveying gas (RH) is 40% to 100%, the use of said method in an in-plant polymer conveying system, the use of said method for improving dust and/or angel hair removal in polymer conveying systems and the use of said method for increasing conveying capacity of polyolefin particles with a density of from less than 850 to 910 kg/m. 1. A method for transporting polyolefin particles in a polymer conveying system , comprising the steps of:a) subjecting the polyolefin particles to moist conveying gas to produce wetted polyolefin particles;b) transporting the wetted polyolefin particles through at least one conveying line; and{'sub': 'CG', 'c) controlling the amount of moisture in the conveying gas of the polymer conveying system as such that at the downstream end point of the at least one conveying line the relative humidity of the conveying gas (RH) is 40% to 100%.'}2. The method according to claim 1 , wherein the polymer conveying system is an gas conveying system selected from a pneumatic conveying system and a vacuum conveying system.3. The method according to claim 1 , wherein the conveying gas is selected from air claim 1 , nitrogen or argon.4. The method according to claim 1 , wherein the moist conveying gas is produced by dosing water into the conveying gas of the polymer conveying system at the upstream end of the at least one conveying line.5. The method according to claim 1 , further comprising the steps of:subjecting the conveyed polyolefin particles to ...

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Номер записи: 38
13-02-2020 дата публикации

DEVICE AND METHOD FOR PREPARING PARA-XYLENE AND CO-PRODUCING LIGHT OLEFINS FROM METHANOL AND/OR DIMETHYL ETHER AND BENZENE

Номер: US20200048166A1
Автор: He Changqing, JIA Jinming, LI Chenggong, Li Hua, Liu Zhongmin, TANG Hailong, Wang Xiangao, Ye Mao, Zhang Cheng, ZHANG Jinling, Zhang Tao, ZHAO Yinfeng
Принадлежит: Dalian Institute of Chemical Physics, Chinese Academy of Sciences

A fast fluidized bed reactor, device and method for preparing para-xylene and co-producing light olefins from methanol and/or dimethyl ether and benzene, resolving or improving the competition problem between an MTO reaction and an alkylation reaction during the process of producing para-xylene and co-producing light olefins from methanol and/or dimethyl ether and benzene, and achieving a synergistic effect between the MTO reaction and the alkylation reaction. By controlling the mass transfer and reaction, competition between the MTO reaction and the alkylation reaction is coordinated and optimized to facilitate a synergistic effect of the two reactions, so that the conversion rate of benzene, the yield of para-xylene, and the selectivity of light olefins are increased. 124-. (canceled)25. A fast fluidized bed reactor for preparing para-xylene and co-producing light olefins from methanol and/or dimethyl ether and benzene , wherein the fast fluidized bed reactor comprises a first reactor feed distributor and a plurality of second reactor feed distributors , the first reactor feed distributor and the plurality of second reactor feed distributors are sequentially arranged along the gas flow direction in the fast fluidized bed reactor.26. The fast fluidized bed reactor of claim 25 , wherein the number of the second reactor feed distributors is in a range from 2 to 10.27. The fast fluidized bed reactor of claim 25 , wherein the fast fluidized bed reactor comprises a first reactor gas-solid separator and a second reactor gas-solid separator claim 25 , the first reactor gas-solid separator is placed in a dilute phase zone or outside a reactor shell claim 25 , and the second reactor gas-solid separator is placed in the dilute phase zone or outside the reactor shell;the first reactor gas-solid separator is provided with a regenerated catalyst inlet, a catalyst outlet of the first reactor gas-solid separator is placed at the bottom of a reaction zone, and a gas outlet of the ...

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Номер записи: 39
23-02-2017 дата публикации

Solids circulation system and method for capture and conversion of reactive solids with fluidized bed temperature control

Номер: US20170051217A1
Автор: Dave G. Newport, Hamilton Sean Michael Whitney, Jonathan A. Zenz, Ravi Chandran
Принадлежит: ThermoChem Recovery International Inc

A solids circulation system receives a gas stream containing char or other reacting solids from a first reactor. The solids circulation system includes a cyclone configured to receive the gas stream from the first reactor, a dipleg from the cyclone to a second reactor, and a riser from the second reactor which merges with the gas stream received by the cyclone. The second reactor has a dense fluid bed and converts the received materials to gaseous products. A conveying fluid transports a portion of the bed media from the second reactor through the riser to mix with the gas stream prior to cyclone entry. The bed media helps manipulate the solids that is received by the cyclone to facilitate flow of solids down the dipleg into the second reactor. The second reactor provides additional residence time, mixing and gas-solid contact for efficient conversion of char or reacting solids.

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Номер записи: 40
01-03-2018 дата публикации

ULTRA LOW PRESSURE CONTINUOUS CATALYST TRANSFER WITHOUT LOCK HOPPER

Номер: US20180056264A1
Автор: Austin Kyle P., Brabson Charles, Gaicki Richard, Gattupalli Rajeswar, Naunheimer Christopher, Vetter Michael J.
Принадлежит:

An apparatus is presented for the transferring of catalyst from an upstream vessel to a downstream vessel. The apparatus includes a non-mechanical valve and a transfer line, wherein a lift gas provides for carrying catalyst through the transfer line. The non-mechanical valve has a catalyst inlet and a lift gas inlet to provide for a consistent flow to limit or reduce pipe erosion and catalyst attrition, as well as to provide catalyst and lift gas to the transfer lines. 1. An apparatus for the transfer of catalyst comprising:a non-mechanical valve having a catalyst inlet, a lift gas inlet, and an outlet;a transfer line having an inlet in fluid communication with the non-mechanical valve outlet, and an outlet;a first downstream vessel having an inlet in fluid communication with the transfer line, and a gas outlet and a catalyst outlet, wherein first downstream vessel includes an internal pipe and a restriction orifice.2. The apparatus of further comprising an impactless elbow disposed in the transfer line and at a position in the transfer line at an elevated position relative to the catalyst disengaging drum.3. The apparatus of wherein the transfer line further includes a second inlet for admitting a second lift gas.4. The apparatus of wherein the second inlet is in a position in the transfer line disposed below the inlet from the non-mechanical valve outlet.5. The apparatus of further comprising a second non-mechanical valve having an inlet in fluid communication with the first downstream vessel outlet claim 1 , a lift gas inlet and an outlet.6. The apparatus of further comprising a second transfer line having an inlet in fluid communication with the second non-mechanical valve outlet claim 5 , and an outlet.7. The apparatus of further comprising a second impactless elbow disposed in the second transfer line and at a position in the transfer line at an elevated position relative to a third downstream vessel.8. The apparatus of wherein the second transfer line further ...

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Номер записи: 41
02-03-2017 дата публикации

DEVICE FOR CONTINUOUSLY FEEDING DIVIDED SOLIDS TO A PRESSURISED PROCESS OR FOR CONTINUOUSLY EXTRACTING DIVIDED SOLIDS FROM SAID PROCESS

Номер: US20170056852A1
Автор: CHARTON Frederic, RUIZ Jean Christophe, TURC Hubert-Alexandre
Принадлежит: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES AL TERNATIVES

The invention relates to a device for continuously incorporating solids into a pressurised fluid which is either liquid or gaseous, comprising a string of pistons sliding inside a tube in order to define therein hermetically separated chambers, which tube is brought to increasing and then decreasing pressures by feeding and venting fluid. The solids are incorporated into the fluid at the inlet of the tube. In the centre of the tube, there are connections to a circuit in which the fluid flows and which feeds the solids towards a reactor where said solids are treated. This arrangement also makes it possible for divided solid materials to be extracted from the reactor, such that said solid materials are continuously depressurised. 110- (canceled)11. A device for continuously feeding or extracting a pressurised fluid containing divided solids , comprising a tube , a string of pistons , connected together by a chain and sliding in the tube sealingly , the tube comprising fluid feeds distributed from an inlet of the tube to a central portion of the tube and staged at increasing pressures towards the central portion , vents for the fluid distributed from the central portion of the tube to an outlet of the tube , opposite to the inlet , and staged at decreasing pressures towards the outlet , a feed of the divided solids at the inlet of the tube , and a circuit for flow of the pressurised fluid , the flow circuit passing through the tube to the central portion , emerging therein through a flow feed and a flow discharge communicating with each other when the string of pistons is present in the tube , the flow discharge also comprising a discharge of the divided solids.12. The device for feeding or drawing off a pressurised fluid containing divided solids according to claim 11 , wherein the feeds for the fluid form part of branches of a fluid-distribution network leading to a source of the pressurised fluid and provided with pressure reducers calibrated at different pressures. ...

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Номер записи: 42
20-02-2020 дата публикации

FAST FLUIDIZED-BED REACTOR, DEVICE, AND METHOD USING OXYGEN-CONTAINING COMPOUND FOR MANUFACTURING PROPENE OR C4 HYDROCARBON

Номер: US20200055014A1
Автор: He Changqing, JIA Jinming, Liu Zhongmin, TANG Hailong, Wang Xiangao, Ye Mao, ZHANG Jinling, Zhang Tao, ZHAO Yinfeng
Принадлежит: Dalian Institute of Chemical Physics, Chinese Academy of Sciences

A fast fluidized-bed reactor, device and method for preparing propylene and C4 hydrocarbons from oxygen-containing compounds. The device includes the fast fluidized-bed reactor and a fluidized-bed regenerator for regenerating a catalyst. The method includes: a) feeding a raw material containing the oxygen-containing compounds from reactor feed distributors to a dense phase zone of the fast fluidized-bed reactor, and contacting the raw material with a catalyst, to generate a stream containing target product and a spent catalyst containing carbon; b) sending the stream into a product separation system, obtaining propylene, C4 hydrocarbons, light fractions and the like after separation, returning 70 wt. % or more of the light fractions to the dense phase zone of the fast fluidized-bed reactor from the reactor feed distributor. 115-. (canceled)16. A fast fluidized-bed reactor for preparing propylene and C4 hydrocarbons from oxygen-containing compounds , comprising:a reactor shell, one or more reactor feed distributors, a first reactor gas-solid separator, a second reactor gas-solid separator, a reactor heat extractor, a product gas outlet and a reactor stripper, wherein the lower part of the fast fluidized-bed reactor is a dense phase zone, the upper part of the fast fluidized-bed reactor is a dilute phase zone, one and more reactor feed distributors are disposed in the dense phase zone, the reactor heat extractor is disposed inside or outside the reactor shell, the first reactor gas-solid separator and the second reactor gas-solid separator are placed outside the reactor shell, the first reactor gas-solid separator is equipped with a regenerated catalyst inlet, the catalyst outlet of the first reactor gas-solid separator is located at the bottom of the dense phase zone, the gas outlet of the first reactor gas-solid separator is located in the dilute phase zone, the inlet of the second reactor gas-solid separator is located in the dilute phase zone, the catalyst outlet ...

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Номер записи: 43
20-02-2020 дата публикации

BULK CATALYST WITHDRAWAL SYSTEM AND METHODS FOR THE USE THEREOF

Номер: US20200055015A1
Автор: Pretz Matthew T.
Принадлежит: Dow Global Technologies LLC

A method for processing a chemical stream includes contacting a feed stream with a catalyst in a reactor portion of a reactor system causing a reaction which forms a product stream. The method includes separating the product stream from the catalyst, passing the catalyst to a catalyst processing portion of the reactor system, processing the catalyst in the catalyst processing portion, and passing a portion of the catalyst from the catalyst processing portion of the reactor system into a catalyst withdrawal system that includes a catalyst withdrawal vessel and a transfer line coupling the catalyst withdrawal vessel to the catalyst processing portion. Each of the catalyst withdrawal vessel and the transfer line include an outer metallic shell and an inner refractory lining. The method further includes cooling the catalyst in the catalyst withdrawal vessel from greater than or equal to 680° C. to less than or equal to 350° C. 1. A method for processing a chemical stream , the method comprising:contacting a feed stream with a catalyst in a reactor portion of a reactor system, wherein the reactor system comprises the reactor portion and a catalyst processing portion and the contacting of the feed stream with the catalyst causes a reaction which forms a product stream;passing the catalyst to the catalyst processing portion of the reactor system;processing the catalyst in the catalyst processing portion of the reactor system;passing at least a portion of the catalyst from the catalyst processing portion of the reactor system into a catalyst withdrawal system comprising a catalyst withdrawal vessel and a transfer line coupling the catalyst withdrawal vessel to the catalyst processing portion, each of the catalyst withdrawal vessel and the transfer line comprising an outer metallic shell and an inner refractory lining; andcooling the catalyst in the catalyst withdrawal vessel from greater than or equal to 680° C. to less than or equal to 350° C.2. The method of claim 1 , ...

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Номер записи: 44
04-03-2021 дата публикации

CO2 HYDROGENATION IN REVERSE FLOW REACTORS

Номер: US20210061656A1
Автор: "ONeal Everett J.", Gatt Joseph E., Skoulidas Anastasios I.
Принадлежит:

Systems and methods are provided for hydrogenation of COin a reverse flow reactor environment via a reverse water gas shift reaction. A reverse flow reactor environment is suitable for performing endothermic reactions at high temperatures, where a reactant flow is passed into the reactor in a first portion of the cycle in a first flow direction while a combustion or heating flow is passed into the reactor during a second portion of the reaction cycle from the opposite direction. This can allow for efficient heating of surfaces within the reactor to provide heat for the endothermic reverse water gas shift reaction while reducing or minimizing incorporation of combustion products into the desired reaction products. 1. A method for performing a reaction in a reverse flow reactor , comprising:{'sub': '2', 'reacting a fuel mixture comprising fuel, 0.1 vol % or more of O, and a diluent under combustion conditions in a combustion zone within a reverse flow reactor to form a flue gas and to heat a conversion zone to an average conversion zone temperature of 400° C. or more, the conversion zone comprising a catalyst composition; and'}{'sub': 2', '2', '2', '2', '2, 'exposing a reactant stream comprising 5.0 vol % to 50 vol % CO, 20 vol % or more H, and a ratio of Hto COof 2.0 or more, to the catalyst composition in the conversion zone under reverse water gas shift reaction conditions to form a product stream comprising HO and CO, a direction of flow for the reactant stream within the reaction zone being reversed relative to a direction of flow for the fuel mixture.'}2. The method of claim 1 , wherein the reactant stream comprises a ratio of Hto COof 3.0 or more.3. The method of claim 1 , wherein the reactant stream comprises 10 vol % or more CO.4. The method of claim 3 , the method further comprising:{'sub': 2', '2, 'mixing a synthesis gas feed comprising 10 vol % or more COwith an H-containing stream to form the reactant stream.'}5. The method of claim 1 , wherein the ...

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Номер записи: 45
20-02-2020 дата публикации

CATALYST INJECTION SYSTEM FOR AN OLEFIN POLYMERIZATION REACTOR

Номер: US20200055969A1
Автор: Brown Stephen, Clavelle Eric, Harding Geoffrey
Принадлежит: NOVA CHEMICALS (INTERNATIONAL) S.A.

This disclosure relates to a method and an apparatus for the delivery of a multi-component olefin polymerization catalyst to a polymerization reactor. The components soluble in a first solvent are delivered under pressure along with that solvent in a first delivery conduit. The components that are insoluble in the first solvent but are soluble in a second solvent are delivered under pressure in a second delivery conduit which is arranged coaxially with and disposed within the first conduit, such that the inner conduit and outer conduit terminate at a common catalyst component mixing conduit which extends into the polymerization reactor and in which the catalyst components mix to form an active polymerization catalyst. 1. A method for delivering a multi-component olefin polymerization catalyst to a polymerization reactor , the method comprising:feeding at least one catalyst component soluble in a first solvent to a catalyst component mixing conduit via a first catalyst component delivery conduit;feeding at least one catalyst component soluble in a second solvent to the catalyst component mixing conduit via a second catalyst component delivery conduit which is disposed within the first catalyst component delivery conduit;wherein the at least one catalyst component soluble in the first solvent and the at least one catalyst component soluble in the second solvent come into contact with one another within the catalyst component mixing conduit before being expelled from the catalyst component mixing conduit into the polymerization reactor.2. The method of claim 1 , wherein the at least one catalyst component soluble in the first solvent is insoluble in the second solvent.3. The method of claim 1 , wherein the at least one catalyst component soluble in the second solvent is insoluble in the first solvent.4. The method of claim 1 , wherein the at least one catalyst component soluble in the first solvent is insoluble in the second solvent and the at least one catalyst ...

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Номер записи: 46
24-03-2022 дата публикации

NOZZLE, SOLID MATTER UNLOADING DEVICE, SOLID MATTER UNLOADING SYSTEM, AND SOLID MATTER UNLOADING METHOD

Номер: US20220088554A1
Автор: GAMMA Hajime, SUGIMOTO Takashi, YUNOKI Hiromi
Принадлежит:

A nozzle includes: a flow path allowing gas to flow; tip opening portion(s) formed on a tip side of the flow path; a base end opening portion formed on a base end side of the flow path; and side hole(s) which is formed on the base end side from the tip opening portion and allows a part of the gas flowing through the flow path to be discharged toward the base end side. The tip opening portion(s) is formed in a direction of the flow path. The side hole(s) is formed along a circumferential direction of the flow path. When the gas is supplied from the base end opening portion, a ratio (Q1/Q1) of a flow rate (Q1) of the gas discharged from the tip opening portion(s) and a flow rate (Q1) of the gas discharged from the side hole(s) is 0.05 to 0.7. 1. A nozzle which is connectable to a conduit for supplying gas to a tubular body filled with granular solid matters , the nozzle comprising:a flow path which allows the gas to flow;a tip opening portion which is formed on a tip side of the flow path;a base end opening portion which is formed on a base end side of the flow path; anda side hole which is formed on the base end side from the tip opening portion and allows a part of the gas flowing through the flow path to be discharged toward the base end side, whereinthe one or more tip opening portions are formed in a direction of the flow path,the one or more side holes are formed along a circumferential direction of the flow path, andwhen the gas is supplied from the base end opening portion, a ratio (Q1a/Q1b) of a flow rate (Q1a) of the gas discharged from the one or more tip opening portions and a flow rate (Q1b) of the gas discharged from the one or more side holes is 0.05 to 0.7.2. The nozzle according to claim 1 , whereinthe side hole is open toward a base end side of the nozzle at an angle of 30° or more and less than 90° with respect to an axis along a longitudinal direction of the flow path.3. The nozzle according to claim 1 , whereinthe two or more side holes are formed ...

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Номер записи: 47
18-03-2021 дата публикации

USE OF A FUEL OIL WASH TO REMOVE CATALYST FROM A FLUIDIZED-BED PROPANE DEHYDROGENATION REACTOR EFFLUENT

Номер: US20210077967A1
Автор: Caton Jeffrey Donald, Reyneke Rian, Urquiaga Jose Manuel, Vu Truc
Принадлежит: Kellogg Brown & Root LLC

A process where external fuel oil is used to wash entrained catalyst from a fluidized-bed propane dehydrogenation reactor effluent, where the fuel oil and catalyst mixture is returned to the reactor to provide the net fuel required for catalyst regeneration. Optionally the fluidized-bed propane dehydrogenation reactor effluent and the fuel oil are contacted in a direct contact inline device before entering a flash zone in the reactor vessel. 1. A method for recovering catalyst from a fluidized-bed propane dehydrogenation reactor effluent gas , the method comprising:(a) cooling fluidized-bed propane dehydrogenation reactor effluent gas;(b) contacting the cooled effluent gas with fuel oil in a wash section to wash out catalyst to obtain a cooled effluent gas essentially free of catalyst;(c) withdrawing an oil-catalyst slurry from the wash section and circulating the oil-catalyst slurry through a filter thereby removing catalyst from the fuel oil giving filtered wash oil;(d) returning filtered wash oil to the wash section as recirculated wash oil; and(e) backwashing the filter thereby recovering catalyst.2. The method of where the contacting and returning steps are effected in a quench tower comprising vapor-liquid contact elements and a bottoms zone holding a fuel oil inventory.3. The method of further comprising cooling the recirculated wash oil before the contacting step.4. The method of where circulating the oil-catalyst slurry through a filter comprises continuously passing the oil-catalyst slurry through at least one first filter in a filtration mode to separate the catalyst therefrom giving filtrate while at least one second filter in parallel with the first filter is in a backwashing mode thereby removing the separated catalyst therefrom.5. The method of further comprising returning filtrate from the first filter to the fuel oil inventory.6. The method of where the backwashing of the at least one filter further comprises periodically alternating the at least ...

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Номер записи: 48
18-03-2021 дата публикации

Processes and Apparatus for Bimodal Slurry Polymerization

Номер: US20210079125A1
Автор: Edward F. Smith, James A. Kendrick, Keith W. Trapp, Scott T. Roger
Принадлежит: ExxonMobil Chemical Patents Inc

Processes and apparatus for preparing bimodal polymers are provided. In some embodiments, processes include introducing a monomer, a first diluent, a catalyst, hydrogen, at a first hydrogen concentration, and optional comonomer, to a first loop reactor to produce, under polymerization conditions, a first slurry of polymer solids. Processes may also include continuously discharging the first slurry of polymer solids from the loop reactor as a first polymerization effluent to a first flash tank; separating the first polymerization effluent in the first flash tank to provide a first concentrated polymer slurry with significantly lower hydrogen concentration; and transferring the first concentrated polymer slurry from the flash tank to a re-slurry mixer. Processes may further include introducing a re-slurry mixer diluent to the first concentrated polymer slurry to form a second concentrated polymer slurry in the re-slurry mixer that can be pumped to a second slurry loop reactor.

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Номер записи: 49
18-03-2021 дата публикации

Olefin polymerization processes

Номер: US20210079126A1
Автор: Aaron C. MCGINNIS, Benjamin J. OHRAN, David J. Sandell, David T. LAKIN, Handel D. Bennett, Michael D. Lucas
Принадлежит: ExxonMobil Chemical Patents Inc

A process for producing an olefin polymer employs a gas phase polymerization reactor having a product discharge system comprising first and second pairs of lock hoppers, wherein each pair comprises an upstream lock hopper connected by valve means to the reactor and a downstream lock hopper connected by valve means to the upstream lock hopper and by further valve means to a product recovery system, and wherein a first cross-tie is provided between the upstream lock hoppers of the first and second pairs of lock hoppers and a second cross-tie is provided between the downstream lock hoppers of the first and second pairs of lock hoppers. Operation of the second cross-tie during product removal cycles is controlled in accordance with reactor pressure.

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Номер записи: 50
22-03-2018 дата публикации

FLUID CATALYTIC CRACKING PROCESS AND APPARATUS FOR MAXIMIZING LIGHT OLEFIN YIELD AND OTHER APPLICATIONS

Номер: US20180079973A1
Автор: Breckenridge Justin, Chen Liang, Dorsey Michael, Hood Jon A., Loezos Peter, Marri Rama Rao, Singh Hardik, Tomsula Bryan
Принадлежит: LUMMUS TECHNOLOGY INC.

Apparatus and processes herein provide for converting hydrocarbon feeds to light olefins and other hydrocarbons. The processes and apparatus include, in some embodiments, feeding a hydrocarbon, a first catalyst and a second catalyst to a reactor, wherein the first catalyst has a smaller average particle size and is less dense than the second catalyst. A first portion of the second catalyst may be recovered as a bottoms product from the reactor, and a cracked hydrocarbon effluent, a second portion of the second catalyst, and the first catalyst may be recovered as an overhead product from the reactor. The second portion of the second catalyst may be separated from the overhead product, providing a first stream comprising the first catalyst and the hydrocarbon effluent and a second stream comprising the separated second catalyst, allowing return of the separated second catalyst in the second stream to the reactor. 1. A process for the conversion of hydrocarbons , comprising:feeding a first particle and a second particle to a reactor, wherein the first particle has a smaller average particle size and/or is less dense than the second particle, and wherein the first particle and second particle may independently be catalytic or non-catalytic particles;feeding a hydrocarbon feedstock to the reactor;recovering an overhead product from the reactor comprising a converted hydrocarbon effluent, the second particle, and the first particle;separating the second particle from the overhead product to provide a first stream comprising the first particle and the converted hydrocarbon effluent and a second stream comprising the separated second particle;returning the separated second particle in the second stream to the reactor.2. The process of claim 1 , further comprising recovering a bottoms product from the reactor comprising the second particle.3. The process of claim 1 , further comprising:feeding a second hydrocarbon feedstock and a mixture of first particle and second particle ...

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Номер записи: 51
31-03-2022 дата публикации

MEASUREMENT APPARATUS FOR MEASURING AXIAL TEMPERATURE PROFILES IN A REACTOR TUBE

Номер: US20220097015A1
Автор: BRUDER Frank, DAVID MARION, Gary Daniel, ULBER Dieter
Принадлежит:

Described herein are a measurement apparatus for measuring axial temperature profiles in a reactor tube, a connecting piece for connecting the reactor tube to a feed pipe configured as a thermal stress compensator for a reaction input stream and for lateral introduction of a multipoint thermocouple into the reactor tube, the use of the connecting piece/measurement apparatus for measuring axial temperature profiles in a reformer tube for steam reforming of hydrocarbons and a process for installing the measurement apparatus. 1. A connecting piece for connecting a reactor tube to a feed pipe configured as a thermal stress compensator for a reactor input stream and for lateral introduction of a multipoint thermocouple into the reactor tube , comprising:(a) a first cylindrical or frustoconical section having a first end pointing towards a circular entry end of the reactor tube, wherein the first end of the connecting piece has the same internal diameter as the entry end of the reactor tube or as a tubular insulation piece introduced into the entry end of the reaction tube and wherein the first section of the connecting piece is gastightly connectable to the entry end of the reactor tube,(b) a second cylindrical or frustoconical section having a second end pointing towards a circular exit end of the feed pipe, wherein the second end of the connecting piece has the same internal diameter as the exit end of the feed pipe and is gastightly connectable thereto,(c) at least one transition piece gastightly connectable to the first and the second section of the connecting piece,(d) wherein the constituents (a), (b) and (c) have a circular cross section and a longitudinal axis through the respective circle center point, wherein the constituents are arranged one behind the other with their longitudinal axes in alignment and thus coincide on a common longitudinal axis,(e) a guide tube laterally attached to one of the constituents (a), (b) and (c), gastightly connected to the ...

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Номер записи: 52
12-03-2020 дата публикации

MACHINE AND METHODS FOR TRANSFORMING BIOMASS AND/OR WASTE PLASTICS VIA SUPERCRITICAL WATER REACTION

Номер: US20200078755A1
Автор: Allan G. Graham, Flynn James D., Loop Thomas Erik
Принадлежит: Xtrustx Technologies, Inc.

The machinery and methods disclosed herein are based on the use of a specialized extruder configured to continuously convey and plasticize/moltenize selected lignocellulosic biomass and/or waste plastic materials into a novel variable volume tubular reactor, wherein the plasticized/moltenized material undergoes reaction with circumferentially injected supercritical water—thereby yielding valuable simple sugar solutions and/or liquid hydrocarbon mixtures (e.g., “neodiesel”), both of which are key chemical commodity products. The reaction time may be adjusted by changing the reactor volume. The machinery includes four zones: (1) a feedstock conveyance and plasticization/moltenization zone; (2) a steam generation and manifold distribution zone; (3) a central supercritical water reaction zone; and (4) a pressure let-down and reaction product separation zone. The machinery and methods minimize water usage—thereby enabling the economic utilization of abundant biomass and waste plastics as viable renewable feedstocks for subsequent conversion into alternative liquid transportation fuels and valuable green-chemical products. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. (canceled)12. (canceled)13. A machine for transforming a selected polymeric material into a plurality of reaction products via supercritical water reaction , comprising:an extruder having an inlet and a downstream outlet, wherein the downstream outlet is coincident with the longitudinal axis of the extruder;a steam generator fluidically connected to a downstream inlet manifold;a tubular reactor having an interior space fluidically connected to an inlet end and an outlet end, wherein the inlet end of the tubular reactor is fluidically connected to both (i) the outlet of the extruder, and the inlet manifold, and wherein the outlet end of the tubular reactor is fluidically connected to;a first downstream chamber; and ...

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Номер записи: 53
12-03-2020 дата публикации

PROCESS FOR SELECTIVE PRODUCTION OF LIGHT OLEFINS AND AROMATIC FROM CRACKED LIGHT NAPHTHA

Номер: US20200080006A1
Автор: Bhattacharyya Debasis, Dixit Jagdev Kumar, HARI PRASADGUPTA Bandaru Venkata, KHAN Shoeb Hussain, Maji Prosenjit, Manna Reshmi, MAZUMDAR Sanjiv Kumar, RAMAKUMAR Sankara Sri Venkata, SARAVANAN Subramani, Sau Madhusudan, SINGH Shakti
Принадлежит:

The present invention provides a process for a production of light olefins and aromatics from cracked light naphtha by selective cracking. The present invention thus provides a process for up grading cracked olefinic naphtha to high value petrochemical feed stocks. This process is based on catalytic cracking in which the catalyst activity is optimized by depositing coke for production of light olefins and aromatics. The proposed process has high flexibility and can be operated either in maximizing olefins as reflected from the PIE ratio or in maximizing aromatics (BTX) at different modes of operation depending upon the product requirement. 1. A process for selective production of light olefins and aromatics , the process comprising:a) feeding a mixed olefinic cracked naphtha feedstock into a reactor; (i) wherein under olefinic mode of operation, the mixed olefinic cracked naphtha is catalytically cracked by contacting with a zeolite catalyst for a residence time ranging between 35-65 minutes and at a pressure ranging between 1-2 bar to obtain a cracked product comprising light olefins in the range of 30-50 wt % and obtaining the light olefins as a gaseous product with a propylene to ethylene ratio (PIE) in the range of 1-5;', '(ii) wherein under aromatic mode of operation, the mixed olefinic cracked naphtha is catalytically cracked by contacting with a zeolite catalyst for a residence time ranging between 20-35 minutes and at a pressure ranging between 5-7 bar to obtain a cracked product comprising aromatics in the range of 10-25 wt % and obtaining the aromatics as a liquid product; and, 'b) catalytic cracking of the mixed olefinic cracked naphtha in the reactor under olefinic mode or aromatic mode of operation,'}c) recovering spent catalyst from the reactor and feeding the spent catalyst to a regenerator to obtain a regenerated catalyst and recycling the regenerated catalyst to the reactor.2. The process as claimed in claim 1 , wherein the mixed olefinic cracked ...

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Номер записи: 54
23-03-2017 дата публикации

METHOD OF MAKING FUEL CELL COMPONENT USING ADHESIVE TAPE TO MAINTAIN POSITIONING OF LOADING MATERIAL PARTICLES

Номер: US20170084931A1
Автор: CORREA Salvador E., Lucas Thomas M., NOVACCO LAWRENCE J.
Принадлежит:

A method of fabricating a fuel cell component for use with or as part of a fuel cell in a fuel cell stack, the method comprising: providing a fuel cell component, providing a deposition assembly for depositing loading material particles onto the fuel cell component, and actuating the deposition assembly to cause the deposition assembly to deposit said loading material particles onto said fuel cell component. 1. A method of fabricating a fuel cell component for use with or as part of a fuel cell in a fuel cell stack , the method comprising:providing a fuel cell component;providing a deposition assembly for depositing loading material particles onto the fuel cell component;actuating the deposition assembly to cause said deposition assembly to deposit said loading material particles onto said fuel cell component.2. The method in accordance with claim 1 , further comprising:locating the fuel cell component relative to the deposition mechanism prior to and during actuation of the deposition mechanism.3. The method in accordance with claim 2 , further comprising:sensing the locating of said fuel cell component; andwherein said actuating is responsive to said sensing.4. The method in accordance with claim 3 , further comprising:applying a fixing agent relative to the fuel cell component and to the loading material to maintain positioning of the loading material relative to the fuel cell component.5. The method in accordance with claim 4 , wherein:said loading material particles comprise catalyst particles.6. The method in accordance with claim 5 , wherein:said fixing agent is an adhesive tape.7. The method in accordance with claim 6 , wherein:said adhesive tape is a double-sided adhesive tape.8. The method in accordance with claim 7 , further comprising:joining another fuel cell component to said fuel cell component via said double-sided adhesive tape.9. The method in accordance with claim 8 , further comprising;applying additional double-sided adhesive tape to said fuel ...

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Номер записи: 55
19-03-2020 дата публикации

Methods, devices and systems for processing of carbonaceous compositions

Номер: US20200086288A1
Автор: Scott Laine
Принадлежит: Nanotech Energy Inc

Provided herein are methods, devices and systems for processing of carbonaceous compositions. The processing may include the manufacture (or synthesis) of oxidized forms of carbonaceous compositions and/or the manufacture (or synthesis) of reduced forms of oxidized carbonaceous compositions. Some embodiments provide methods, devices and systems for the manufacture (or synthesis) of graphite oxide from graphite and/or for the manufacture (or synthesis) of reduced graphite oxide from graphite oxide.

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Номер записи: 56
01-04-2021 дата публикации

PROCESS AND APPARATUS FOR REMOVING POLYMER MATERIAL FROM A GAS-SOLIDS OLEFIN POLYMERIZATION REACTOR

Номер: US20210094008A1
Автор: Elovainio Erno, Kanellopoulos Vasileios, Nyfors Klaus, Prinsen Eric-Jan, Weickert Günter
Принадлежит:

The present invention relates to a process for removing polymer material from a gas-solids olefm polymerization reactor wherein the gas-solids olefm polymerization reactor is connected to the top part of an outlet vessel via a feed pipe wherein the powder surface of discharged polymer material and the barrier gas injection point are situated in the outlet vessel as such to fulfill the following criteria: R′=X/Y≤2.0; and R″=X/D≥1.0; wherein X=Distance between the powder surface and the barrier gas injection point; Y=Distance between the barrier gas injection point and the vessel outlet; and D=Equivalent outlet vessel diameter, an apparatus for continuously removing polymer material comprising a gas-solids olefm polymerization reactor, an outlet vessel and a feed pipe connecting the gas-solids olefm polymerization reactor with the top part of the outlet vessel and the use of said apparatus for polymerizing alpha-olefm homo- or copolymers having alpha-olefin monomer units of from 2 to 12 carbon atoms and for increasing the barrier gas efficiency of the gas-solids olefin reactor to at least 75%. 1. A process for removing polymer material from a gas-solid olefin polymerization reactor wherein the gas-solid olefin polymerization reactor is connected to the top part of an outlet vessel via a feed pipe , the process comprising the steps of:(i) discharging polymer material from the gas-solid olefin polymerization reactor via the feed pipe into the outlet vessel;(ii) establishing a powder surface of discharged polymer material within the outlet vessel in a section of the middle part of the outlet vessel;(iii) injecting barrier gas through a barrier gas injection point in a section of the bottom part of the outlet vessel below the powder surface;(iv) recovering polymer material from the outlet vessel through a vessel outlet in a section below the barrier gas injection point;characterized in that [{'br': None, 'i': 'R′=X/Y≤', '2.0;'}, {'br': None, 'and'}, {'br': None, 'i': 'R″= ...

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Номер записи: 57
01-04-2021 дата публикации

SYSTEMS AND METHODS FOR REDUCING HEAT EXCHANGER FOULING RATE

Номер: US20210094009A1
Автор: Lowell Jeffrey S., Price Ralph J.
Принадлежит: CHEVRON PHILLIPS CHEMICAL COMPANY LP

Systems and methods of reducing heat exchanger fouling rate and of producing polyolefins are provide herein. In some aspects, the methods include providing a first gas stream comprising a gas and entrained fine polyolefin particles to a gas outlet line; preferentially removing a portion of the entrained fine polyolefin particles from the gas outlet line to form a bypass stream comprising a higher concentration of the entrained fine polyolefin particles than is present in the first gas stream; providing the bypass stream to a bypass line comprising a bypass line inlet and a bypass line outlet, wherein the bypass line inlet is located upstream of a first heat exchanger, and wherein the bypass line outlet is located downstream of the first heat exchanger; providing at least a portion of the first gas stream to the first heat exchanger, which produces a first cooled gas stream; and combining the bypass stream and a second gas stream at the bypass line outlet to form a combined gas stream comprising one or more olefins or paraffins, wherein a temperature of the combined gas stream is below the dew point of the combined gas stream. 1. A system for reducing heat exchanger fouling rate comprising:a gas outlet line configured to pass a first gas stream comprising a gas and entrained fine polyolefin particles;a first heat exchanger configured to receive at least a portion of the first gas stream and produce a first cooled gas stream; anda bypass line configured to remove a portion of the entrained fine polyolefin particles from the gas outlet line to form a bypass stream comprising a higher concentration of the entrained fine polyolefin particles than is present in the first gas stream, the bypass line comprising a bypass line inlet and a bypass line outlet,wherein the bypass line inlet is located upstream of the first heat exchanger,wherein the bypass line outlet is located downstream of the first heat exchanger, andwherein the bypass line is configured so that the bypass ...

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Номер записи: 58
16-04-2015 дата публикации

Real-time level monitoring for fixed bed catalyst loading using multiple level sensors

Номер: US20150101406A1
Автор: Bryan A. Patel, David C. Dankworth, Jeffrey W. Frederick, Keith Wilson, Manuel S. Alvarez, Rathna P. Davuluri, Yi En Huang
Принадлежит: ExxonMobil Research and Engineering Co

In various aspects, methods and systems are provided for monitoring catalyst bed levels using multiple sensors that are temporarily installed in a reactor during catalyst loading. The multiple sensors are able to take distance measurements at substantially the same time and at predetermined time intervals so as to provide a catalyst time profile. The catalyst time profile allows an operator monitor catalyst levels during and after catalyst loading. Once catalyst loading is completed, the multiple sensors are removed from the reactor.

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Номер записи: 59
14-04-2016 дата публикации

SEPARATION DEVICE FOR USE IN FLUIDIZED BED REACTOR, REACTION REGENERATION APPARATUS AND PROCESS FOR PREPARING OLEFINS, AND PROCESS FOR PREPARING AROMATIC HYDROCARBONS

Номер: US20160101396A1
Автор: GU Songyuan, JIN Yongming, Li XiaoHong, QI Guozhen, Xu Jun, YU Zhinan, ZHONG Siqing
Принадлежит:

Device for use in a fluidized bed reactor includes a gas-solid separator communicated with an outlet of the fluidized bed reactor; a vertically arranged damper, a solid outlet of the gas-solid separator communicated with a lower region of the damper, a gas outlet of the gas-solid separator communicated with an upper region of the damper; a fine gas-solid separator, an inlet of the fine gas-solid separator communicated with the upper region of the damper, and a solid outlet of the fine gas-solid separator communicated with the lower region of the damper. Product from the fluidized bed reactor is fed into the preliminary gas-solid separator, most solid catalysts separated and fed into the lower region; the product entraining the rest catalysts is fed into the upper region, and into the fine gas-solid separator, the rest catalysts fed into the lower region; and final product is obtained from the fine gas-solid separator. 1. A separation device for use in a fluidized bed reactor , comprisinga preliminary gas-solid separator communicated with an outlet of the fluidized bed reactor,a vertically arranged damper, a solid outlet of the preliminary gas-solid separator being communicated with a lower region of the damper, and a gas outlet of the preliminary gas-solid separator being communicated with an upper region of the damper, anda fine gas-solid separator, an inlet of the fine gas-solid separator being communicated with the upper region of the damper, and a solid outlet of the fine gas-solid separator being communicated with the lower region of the damper, whereinthe separation device is configured so that product having catalysts entrained therein from the fluidized bed reactor is fed into the preliminary gas-solid separator, most solid catalysts being separated and fed into the lower region of the damper; the product entraining the rest catalysts is fed into the upper region of the damper, and into the fine gas-solid separator, the rest catalysts being separated and fed ...

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Номер записи: 60
14-04-2016 дата публикации

FLUIDIZED BED REACTOR AND METHOD OF PRODUCING GRANULAR POLYSILICON

Номер: US20160101982A1
Автор: FORSTPOINTNER Gerhard, PEDRON Simon
Принадлежит:

The fluidized bed process for preparing polysilicon by chemical vapor deposition is improved by positioning at least one Laval nozzle upstream from a gas inlet into the reactor. 110.-. (canceled)11. A fluidized bed reactor for producing granular polysilicon , comprising: a vessel having an inner reactor tube for a fluidized bed of granular polysilicon , and a reactor base; a heating device for heating the fluidized bed in the inner reactor tube; at least one opening in the reactor base for feeding fluidizing gas , and at least one opening in the reactor base for feeding reaction gas; a device for removing reactor offgas; a feed apparatus for feeding silicon seed particles; and a withdrawal conduit for granular polysilicon product , wherein a Laval nozzle is situated upstream of at least one of the openings in the reactor base , suitable for supercritically expanding at least one mass stream fed to the fluidized bed reactor.12. The fluidized bed reactor of claim 11 , which has at least two openings in the reactor base claim 11 , each opening having a Laval nozzle situated upstream from the opening.13. The fluidized bed reactor of claim 11 , which has one or more groups of openings in the reactor base claim 11 , each group comprising at least two openings claim 11 , wherein a Laval nozzle is situated upstream of each group of openings.14. The fluidized bed reactor of claim 11 , comprising one or more groups of openings in the reactor base claim 11 , each group comprising at least two openings claim 11 , wherein one Laval nozzle is situated upstream of each opening claim 11 , and at least one further Laval nozzle upstream of said one Laval nozzle upstream of said each opening.15. The fluidized bed reactor of claim 11 , wherein the at least one opening in the reactor base upstream of which a Laval nozzle is situated comprises a gas distributor.16. The fluidized bed reactor of claim 11 , wherein the at least one opening in the reactor base upstream of which a Laval ...

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Номер записи: 61
26-03-2020 дата публикации

ESTIMATION OF CYCLONE LIFE BASED ON REMAINING ABRASION RESISTANT LINING THICKNESS

Номер: US20200094211A1
Автор: Panchal Dharmesh Chunilal
Принадлежит:

A Fluid Catalytic Cracking process converts heavy crude oil fractions into lighter hydrocarbon products at high temperature and moderate pressure in the presence of a catalyst. During this process, catalyst particles stay entrained in the descending gas stream. An inlet scroll on the cyclone may be used to keep the inlet gas stream and the entrained particles away from the entrance to the gas outlet tube. Refractory material may applied to the interior of the wall of the cyclone to form an abrasion resistant lining to insulate the walls of the cyclone from the gas flow contents. The inlet feed velocity may be used as a predictive factor to determine a wear rate of the cyclones. Thus, lining erosion can be predicted so that the lining can be repaired or replaced during a planned turnaround. 1. A system comprising:a reactor configured to perform a fluid catalytic cracking process, the reactor including a cyclone with an abrasion resistant lining on an interior wall of the cyclone;a gas flow rate sensor configured to measure a feed velocity of a feed to the cyclone; a processor of the data analysis platform;', receive feed velocity data from the gas flow rate sensor, the feed velocity data indicating the feed velocity of the feed to the cyclone;', 'determine an erosion rate of the abrasion resistant lining on the interior wall of the cyclone based on the feed velocity of the feed to the cyclone;', 'based on the erosion rate, determine a recommended adjustment to an operating parameter of the reactor;', 'send the recommended adjustment to the operating parameter of the reactor; and, 'memory of the data analysis platform, the memory storing executable instructions that, when executed, cause the data analysis platform to], 'a data analysis platform comprising a processor of the control platform; and', receive the recommended adjustment to the operating parameter of the reactor; and', 'adjust the operating parameter of the reactor., 'memory of the control platform, the ...

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Номер записи: 62
04-04-2019 дата публикации

Fluidized bed reactor with pinching fittings for producing polysilicon granulate, and method and use for same

Номер: US20190099730A1
Автор: Bernhard Baumann, Gerhard Forstpointner
Принадлежит: Wacker Chemie AG

Control of the flow of granular polysilicon granules is effected by employing an elastomeric pinch sleeve valve. The flow control by this method is especially useful for controlling the flow of silicon seed particles and granular polysilicon product in the fluidized bed method for producing polysilicon. The flow may be stopped without gas leakage, and is suitable for use over long operating campaigns.

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Номер записи: 63
04-04-2019 дата публикации

METHOD FOR CARRYING OUT A HETEROGENEOUSLY CATALYSED REACTION

Номер: US20190099731A1
Автор: Groemping Matthias, KRILL Steffen, LYGIN Alexander
Принадлежит: Evonik Roehm GmbH

A process for performing a heterogeneously catalysed reaction in a three-phase reactor, where there is at least one liquid phase, at least one gaseous phase and at least one solid phase in the reactor and the reactor has at least two zones, with the reaction mixture being conveyed downward in zone 1, the reaction mixture being conveyed upward in zone 2, zones 1 and 2 being separated from one another by a dividing wall, and in that the ratio between the average catalyst concentrations in zone 2 and in zone 1 is greater than 2. 1. A process , comprising performing a heterogeneously catalysed reaction in a three-phase reactor , wherein the three-phase reactor comprises at least one liquid phase , at least one gaseous phase and at least one solid phase in the reactor and the reactor has at least two zones , with a reaction mixture being conveyed downward in zone 1 , the reaction mixture being conveyed upward in zone 2 , zones 1 and 2 being separated from one another by a dividing wall , and a ratio between the average catalyst concentrations in zone 2 and in zone 1 is greater than 2.2. The process according to claim 1 , wherein the ratio between the average catalyst concentrations in zone 2 and in zone 1 is greater than 5.3. The process according to claim 1 , wherein the gas required for the process claim 1 , in the course of operation claim 1 , is almost exclusively in zone 2 claim 1 , while zone 1 remains substantially free of the undissolved gas.4. The process according to claim 1 , wherein the ratio between the catalyst concentration in zone 2 at 90% of a fill height of the reactor measured from the bottom and the catalyst concentration at 20% of the fill height measured from the bottom is less than 0.3.5. The process according to claim 1 , wherein a ratio between the average vertical flow rate in zone 1 and the average vertical flow rate in zone 2 is between 5 and 50.6. The process according to claim 1 , wherein a ratio of the reactor diameter in an upper portion ...

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Номер записи: 64
02-06-2022 дата публикации

GAS-SOLID CONTACTING DEVICE

Номер: US20220168700A1
Автор: Bergman Peter Christiaan Albert, Boers Robert Johan, Oltvoort Evert-Jan
Принадлежит:

A device for processing a flow of particulate material by contact with a gas flow includes a housing defining a processing chamber. This chamber includes a gas distribution plate having openings. The gas distribution plate separates a lower gas plenum from a solid-gas contact zone. The contact zone has at least one cylindrical partition upstanding from the gas distribution plate dividing an inner section from an adjacent annular outer section. The at least one partition is provided with a transfer opening for the particulate material. The housing is also provided with an inlet for supplying particulate material to the inner section and an outlet for discharging processed particulate material from the annular outer section. 118.-. (canceled)19. A device for processing a flow of particulate material by contact with a gas flow , comprisinga housing defining a processing chamber and having a gas inlet for introducing a gas flow in a plenum of the processing chamber,wherein the processing chamber comprisesthe plenum, arranged at the lower part of the processing chamber,a contact zone, arranged above the plenum, for contacting the flow of particulate material with the gas flow,wherein the plenum and contact zone are separated by a gas distribution plate,wherein the contact zone comprises a contact path for contact between the flow of particulate material and the gas flow, the contact zone having multiple cylindrical partitions upstanding from the gas distribution plate dividing an inner section of the contact path from an adjacent annular outer section, wherein each partition is provided with a transfer opening configured to allow passage of the particulate material from the inner section to the adjacent annular outer section of the contact path separated by the respective partition, wherein the inner section of the contact path is an annular inner section, and wherein the transfer opening of an inward partition and the transfer opening in an adjacent outward partition ...

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Номер записи: 65
02-04-2020 дата публикации

Fluidizing plate and apparatus comprising such a fluidizing plate

Номер: US20200101433A1
Автор: Egon SCHMIDT, Juergen Freiberg, Michael LAIBLE, Norbert Eugen VOLL, Oskar Stephan, Reiner GIESE
Принадлежит: BASF SE

The invention relates to a fluidizing plate, comprising a supporting structure and plate segments, the plate segments respectively having openings through which gas flows during operation. The plate segments are respectively releasably connected to the supporting structure and two neighboring plate segments respectively overlap and are releasably connected to one another in the region of the overlap. The invention also relates to an apparatus with such a fluidizing plate.

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Номер записи: 66
18-04-2019 дата публикации

SLURRY BUBBLE COLUMN REACTOR FOR A FISCHER-TROPSCH PROCESS

Номер: US20190112532A1
Автор: Brueschke Marc, Søraker Pål, Taylor Patrick Otto
Принадлежит:

The disclosure deals with a slurry bubble column reactor for converting a gas mixture comprising carbon monoxide and hydrogen into liquid hydrocarbons. The slurry bubble column reactor features a slurry bed of catalyst particles, an inlet conduit for feeding the gas mixture into the slurry bed, a filtration zone for separating the liquid hydrocarbons from the catalyst particles and a liquid outlet conduit for withdrawing the separated hydrocarbons from the filtration zone. The filtration zone is situated in the slurry bubble column reactor such that the slurry bed is found in a first and a second heat exchange zone with the filtration zone arranged between the first and the second heat exchange zone. 1. A slurry bubble column reactor for converting a gas mixture comprising carbon monoxide and hydrogen into liquid hydrocarbons featuring a slurry bed of catalyst particles , an inlet conduit for feeding the gas mixture into the slurry bed , a filtration zone for separating the liquid hydrocarbons from the catalyst particles and an liquid outlet conduit for withdrawing the separated hydrocarbons from the filtration zone , at wherein the filtration zone is situated in the slurry bubble column reactor such that the slurry bed is found in a first and a second heat exchange zone with the filtration zone arranged between the first and the second heat exchange zone.2. The slurry bubble column reactor according to wherein each heat exchange zone features a separate heat exchanger.3. The slurry bubble column reactor according to wherein the slurry bubble column reactor comprises a bottom zone and the inlet conduit is fluently connected to the bottom zone.4. The slurry bubble column reactor according to claim 3 , wherein the first heat exchange zone is situated next to the bottom zone of the slurry bubble column reactor.5. The slurry bubble column reactor according to claim 1 , wherein the filtration zone comprises at least one hollow and enclosed filter element and at least one ...

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Номер записи: 67
07-05-2015 дата публикации

ROTARY DISC DEVICE IN A ROTARY FLUIDISED BED AND METHOD USING SAID DEVICE

Номер: US20150123039A1
Автор: DE BROQUEVILLE Axel
Принадлежит:

The invention relates to a rotary disc device () in a rotary fluidised bed, the outer edge of said disc rotating inside, and faster than, the fluidised bed, thereby allowing: the rotation speed of the fluidised bed to be accelerated, solid particles and/or micro-droplets to be supplied to the fluidised bed or to the free central area, and different annular areas of the fluidised bed to be separated. The invention also relates to methods for transforming solid particles or micro-droplets on contact with the fluids flowing through the rotary fluidised bed or for transforming fluids on contact with solids in suspension in the rotary fluidised bed, using said device. 21516. The device according to claim 1 , characterized in that the square of the ratio between the surface area of the circular wall () and the sum of the surface areas of said injection openings () is greater than 200 times the ratio between the mean diameter of the circular chamber claim 1 , D claim 1 , and the mean diameter of the solid particles claim 1 , d claim 1 , multiplied by the ratio between the mean density of the fluid claim 1 , ρf claim 1 , and the mean density of the solids claim 1 , ρs.39616. The device according to claim 1 , characterized in that the mean distance () between said injection openings () is less than one twentieth of the mean diameter claim 1 , D claim 1 , of said circular chamber claim 1 , and in that the hourly mass flow rate of the fluids passing through the rotary fluidized bed is greater than 200 times the mass of said rotary fluidized bed when the device is in operation.4202111. The device according to claim 1 , characterized in that it comprises at least one tube () for feeding solids claim 1 , optionally entrained by a fluid or in solution in a fluid () claim 1 , in the vicinity of the central axis () claim 1 , against the rotary disk ().5626111531152016061. The device according to claim 4 , characterized in that the annular space () between the outer rim () of said ...

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Номер записи: 68
25-04-2019 дата публикации

A REACTOR COMPRISING A NOZZLE FOR CLEANING FLUID, A KIT AND A METHOD

Номер: US20190118151A1
Автор: Byström Emil, Eklund Lars, IRGUM Knut
Принадлежит: Spinchem AB

The invention refers to a reactor and a method respectively for performing, by means of solid reaction members, a biological or chemical transformation, or physical or chemical trapping from, or release of agents to, a fluidic media, and a subsequent cleaning of the reactor, said reactor comprising a vessel () in which a transformation device () has been mounted. The invention also refers to a reactor kit comprising such reactor. The reactor comprises at least one nozzle () arranged on the longitudinal inner wall of the vessel (). The at least one nozzle () is arranged to direct a flow of a cleaning fluid (CF) in a direction towards a longitudinal centre axis (L) of a flow distributor () arranged in the vessel (). 2. A reactor according to claim 1 , in which the reactor comprises a plurality of nozzles claim 1 , the plurality of nozzles being distributed along the circumference and/or along the longitudinal extension of the longitudinal inner wall of the vessel claim 1 , and wherein the plurality of nozzles are arranged to direct a flow of a cleaning fluid in a direction towards the longitudinal centre axis of the flow distributor.311. A reactor according to claim 1 , wherein the nozzle(s) is/are supported by one or several supports arranged to extend in the longitudinal direction along the longitudinal inner wall of the vessel ().4. A reactor according to claim 3 , wherein the one or several supports form part of an insert.5. A reactor according to claim 3 , wherein each support comprises two or more nozzles distributed along the longitudinal extension of the support claim 3 , and wherein two adjacent nozzles are arranged to provide a longitudinally and continuously uniform spray pattern.6. A reactor according to claim 1 , wherein an inner wall of the vessel comprises means for enhancing the fluidic shear stress in any of the two rotary directions along said inner wall.7. A reactor according to claim 6 , wherein said means for enhancing the fluidic shear stress is ...

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Номер записи: 69
12-05-2016 дата публикации

FLUID CATALYTIC CRACKING APPARATUS AND METHODS FOR CRACKING HYDROCARBONS

Номер: US20160129413A1
Автор: KULPRATHIPANJA Sathit, Palmas Paolo
Принадлежит:

Methods and FCC apparatuses are provided for cracking hydrocarbons. An FCC apparatus includes a riser with a riser outlet positioned within a reactor catalyst collection area. A stripper is coupled to the reactor catalyst collection area, where the riser extends through the stripper, and where the stripper includes a stripper exterior wall. A sleeve is positioned within the stripper between the riser and the stripper exterior wall. 1. A fluid catalytic cracking apparatus comprising:a riser comprising a riser outlet;a reactor catalyst collection area, wherein the riser outlet is positioned within the reactor catalyst collection area;a stripper coupled to the reactor catalyst collection area, wherein the riser extends through the stripper, and wherein the stripper comprises a stripper exterior wall; anda sleeve positioned within the stripper between the riser and the stripper exterior wall.2. The fluid catalytic cracking apparatus of further comprising:a refractory material positioned between the sleeve and the stripper exterior wall.3. The fluid catalytic cracking apparatus of further comprising:a ceramic fiber blanket positioned between the sleeve and the stripper exterior wall.4. The fluid catalytic cracking apparatus of further comprising:a purge inlet positioned between the sleeve and the stripper exterior wall.5. The fluid catalytic cracking apparatus of further comprising:a steam supply fluidly coupled to the purge inlet.6. The fluid catalytic cracking apparatus of further comprising:a barrier wall affixed to the stripper exterior wall such that the barrier wall and the sleeve define a sleeve bottom gap; anda purge outlet defined in the barrier wall.7. The fluid catalytic cracking apparatus of further comprising:a purge outlet positioned between the sleeve and the stripper exterior wall.8. The fluid catalytic cracking apparatus of wherein the sleeve is affixed to the reactor catalyst collection area.9. The fluid catalytic cracking apparatus of wherein the ...

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Номер записи: 70
10-05-2018 дата публикации

METHOD FOR PRODUCING A HORIZONTAL FLOW ADSORBER AND DIVIDING WALL MODULE FOR USE IN SAID METHOD

Номер: US20180126319A1
Автор: BADER Wolfgang, FERSTL Johann, FIRLBECK Michael, Grahl Matthias, HENTSCHEL Harald, Keil Philipp, Schneider Helko
Принадлежит:

The method serves for producing a horizontal through flow adsorber with two adsorbents which contains two immediately adjacent packings in a horizontal or vertical container. Between the two packings there is a vertical interface. In a step (a) a vertical dividing wall is positioned on the bottom of the adsorption bed and then on each side of the dividing wall one of the two adsorbents is charged up to a first height that does not exceed the upper edge of the separating ring. In the following step (b) the vertical dividing wall is displaced upwardly until the lower edge thereof is still placed in the existing packing. Then, on each side of the dividing wall one of the two adsorbents is charged up to a second height that does not exceed the upper edge of the displaced dividing wall. Finally, step (b) is repeated until a predetermined filling height is achieved. According to the invention, the vertical dividing wall is composed of at least three dividing wall modules () that extend only over a part of the length or of the periphery of the vertical dividing wall and are movable in a vertical direction independently of one another. 1. The method for producing a horizontal through flow adsorber with two adsorbents which contains two immediately adjacent packings in a horizontal or vertical container , wherein there is a vertical interface between the two packings , and wherein a first packing contains a first adsorbent and a second packing contains a second adsorbent that differs from the first adsorbent in the chemical composition and/or particle size thereof , wherein , in the method(a) a vertical dividing wall is positioned on the bottom of the adsorption bed and then on each side of the dividing wall one of the two adsorbents is charged up to a first height that does not exceed the upper edge of the dividing wall,(b) the vertical dividing wall is displaced upwardly until the lower edge thereof is still placed in the existing packing, and on each side of the dividing ...

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Номер записи: 71
11-05-2017 дата публикации

PROCESS FOR PRODUCTION OF HIGH QUALITY SYNGAS THROUGH REGENERATION OF COKED UPGRADATION AGENT

Номер: US20170129776A1
Автор: BHANUPRASAD Sayapaneni Gopinath, Bhattacharyya Debasis, DALAI Eswar Prasad, DAS Biswapriya, Kumar Brijesh, KUMARAN Satheesh Vetterkunnel, MUKTHIYAR Sadhullah, Saidulu Gadari, Singh Sanjeev
Принадлежит:

The present invention relates to a process for the production of high quality synthesis gas rich in hydrogen during the process of upgrading the residual hydrocarbon oil feedstock by rejuvenating the spent upgrading material in Reformer in absence of air/oxygen without supplying external heat source other than the heat generated inside the process during combustion of residual coke deposited on the upgrading material. The present invention further relates to the apparatus used for preparation of syngas wherein said syngas thus produced is used for production of hydrogen gas. Furthermore, the present invention also provides system and method for preparing pure hydrogen from syngas. 1. A process for producing syngas rich in hydrogen , during the process of upgrading residual hydrocarbon oil feedstock , the process comprising , partially regenerating spent upgrading agent , obtained from a Riser , in a Reformer with steam and in absence of oxygen containing gases to obtain syngas rich in hydrogen , wherein the spent upgrading agent constitutes 1 to 5 wt % coke , and the Reformer is maintained at a temperature of 650 to 850° C. without supplying external heat.2. The process of claim 1 , wherein the temperature of the Reformer is maintained by circulating the rejuvenated agent from the Combustor to the Reformer.3. The process of claim 1 , further comprising injecting an oil soluble organo-metallic additive selected from alkali and alkaline earth metal additives in the Reformer.4. The process of claim 1 , further comprising introducing partially rejuvenated upgrading agent from the Reformer claim 1 , to a Combustor and burning the partially rejuvenated upgrading agent at a temperature in the range of 750° C. to 950° C. and in presence of a stream of oxygen containing gases in the Combustor to obtain rejuvenated upgrading agent and flue gas.5. The process of claim 4 , further comprising introducing the rejuvenated upgrading agent from the Combustor to the Reformer.6. The ...

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Номер записи: 72
11-05-2017 дата публикации

Control Methods and Systems For Polymer Product Purge

Номер: US20170129969A1
Автор: David J. Sandell
Принадлежит: ExxonMobil Chemical Patents Inc

Disclosed herein are methods and systems for purging a polymer product of volatiles. The methods and systems are particularly useful in the purging of a polyethylene polymer product produced in a fluidized bed reactor.

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Номер записи: 73
19-05-2016 дата публикации

COLLECTOR PIPE FOR A RADIAL REACTOR COMPRISING SOLID FILLETS

Номер: US20160136602A1
Автор: BAZER-BACHI Frederic, LE MOEL Mehdi, PLAIS Cecile, SANCHEZ Eric
Принадлежит: IFP ENERGIES NOUVELLES

This invention relates to a collector pipe () that is permeable to a gaseous fluid and impermeable to catalyst particles, with an approximately cylindrical shape extending along an approximately vertical axis having a first surface that can be in contact with the catalyst particles and a second surface opposite the first surface, the pipe containing a plurality of shaped vertical wires () having a first face () that can be in contact with the catalyst particles and a second face () opposite the first face (), the shaped wires () being integral with a plurality of horizontal support rings () by their second face (), the shaped wires () and the support rings () defining a plurality of openings. 18111213121114131114815111115. Collector pipe () that is permeable to a gaseous fluid and impermeable to catalyst particles , with an approximately cylindrical shape extending along an approximately vertical axis having a first surface that can be in contact with the catalyst particles and a second surface opposite the first surface , the pipe comprising a plurality of shaped vertical wires () having a first face () that can be in contact with the catalyst particles and a second face () opposite the first face () , the shaped wires () being integral with a plurality of horizontal support rings () by their second face () , the shaped wires () and the support rings () defining a plurality of openings , characterized in that the pipe () further comprises a plurality of solid fillets () , impermeable to gaseous fluid and to particles , which are integral with the first face of the shaped wires () and/or placed and held between two vertical wires () , and in that the solid fillets () form an angle of inclination a in relation to the horizontal of between 10° and 90°.215. Collector pipe according to claim 1 , wherein the total surface occupied by the solid fillets () is between 1 and 30% of the total surface developed by the pipe claim 1 , preferably between 2 and 20% of the total ...

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Номер записи: 74
19-05-2016 дата публикации

Collector pipe for a radial-bed reactor

Номер: US20160136605A1
Автор: Cecile Plais, Eric Sanchez, Frederic Bazer-Bachi, Mehdi LE MOEL
Принадлежит: IFP Energies Nouvelles IFPEN

This invention relates to a collector pipe ( 8 ) that is permeable to a gaseous fluid and able to retain particles having a dimension that is greater than a minimum dimension, in which the cross-section of said pipe is a convex polygon having at least three sides.

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Номер записи: 75
03-06-2021 дата публикации

SYSTEM AND METHOD OF PRODUCING A COMPOSITE PRODUCT

Номер: US20210167364A1
Автор: Harutyunyan Avetik, PIERCE Neal, PIGOS Elena Mora
Принадлежит:

A method of producing a composite product is provided. The method includes providing a fluidized bed of metal oxide particles in a fluidized bed reactor, providing a catalyst or catalyst precursor in the fluidized bed reactor, providing a carbon source in the fluidized bed reactor for growing carbon nanotubes, growing carbon nanotubes in a carbon nanotube growth zone of the fluidized bed reactor, and collecting a composite product comprising metal oxide particles and carbon nanotubes. 1. A system for use in producing a composite product , said system comprising:a fluidized bed reactor comprising an amount of metal oxide particles contained therein, the fluidized bed including an outlet;a catalyst or catalyst precursor source in fluid communication with the fluidized bed reactor to provide a flow of catalyst or catalyst precursor in the fluidized bed reactor; anda carrier gas source in fluid communication with the fluidized bed to carry a composite product comprising metal oxide particles and carbon nanotubes grown in the fluidized bed.2. The system in accordance with claim 1 , further comprising a first injector coupled in fluid communication with the catalyst or catalyst precursor source claim 1 , and extending such that the flow of the catalyst or catalyst precursor is discharged into a nanotube growth zone in the fluidized bed reactor.3. The system in accordance with claim 1 , further comprising a second injector coupled in fluid communication with the carrier gas source claim 1 , and extending such that the flow of carrier gas discharged therefrom transports the carbon nanotubes grown in the nanotube growth zone toward the outlet.4. The system in accordance with claim 1 , further comprising a metal oxide particle source coupled in operable communication with an inlet of the fluidized bed reactor claim 1 , wherein the metal oxide particle source is configured to selectively replenish the metal oxide particles in the fluidized bed reactor.5. The system in ...

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Номер записи: 76
09-05-2019 дата публикации

New cyclic metal deactivation unit design for fcc catalyst deactivation

Номер: US20190134589A1
Автор: Andreas MÜLLER, Chandrashekhar P. Kelkar, James C. Fu, Johannes MANG, Roman MATLIN
Принадлежит: BASF Corp

A cyclic metals deactivation system unit for the production of equilibrium catalyst materials including a cracker vessel configured for cracking and stripping a catalyst material; and a regenerator vessel in fluid communication with the cracker vessel, the regenerator vessel configured for regeneration and steam deactivation of the catalyst material.

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Номер записи: 77
08-09-2022 дата публикации

SINGLE AND MULTIPLE TURBULENT/FAST FLUIDIZED BED REACTORS IN NCC PROCESS FOR MAXIMIZING AROMATICS PRODUCTION

Номер: US20220282164A1
Автор: KASHYAP Mayank
Принадлежит:

Systems and methods for producing aromatics are disclosed. A feed stream comprising naphtha is flowed into a reaction unit comprising a fast fluidized bed reactor coupled to and in fluid communication with a riser reactor. The fast fluidized bed reactor is adapted to enable backmixing therein to maximize the production of aromatics. The effluent from the fast fluidized bed reactor is further flowed to the riser reactor. The lift gas, which can comprise nitrogen, methane, flue gas, or combinations thereof, is injected in the reaction unit via a sparger. The effluent of the riser reactor is separated in a product separation unit to produce a product stream comprising light olefins and spent catalyst. The spent catalyst is further stripped by a stripping gas comprising methane, nitrogen, flue gas, or combinations thereof. The stripped spent catalyst is regenerated to produce regenerated catalyst, which is subsequently flowed to the fast fluidized bed reactor. 1. A method of producing an aromatic , the method comprising:contacting, in a fast fluidized bed reactor, naphtha with catalyst particles of a fast-fluidized bed having a superficial gas velocity (SGV) in a range of 1 to 6.5 m/s and under first reaction conditions sufficient to produce a first product comprising one or more aromatics;flowing effluent of the fast fluidized bed reactor to a riser reactor, the effluent of the fast fluidized bed reactor comprising (1) unreacted hydrocarbons of the naphtha, (2) the first product, and (3) the catalyst particles; andcontacting, in the riser reactor, the unreacted hydrocarbons of the naphtha, the first product, and the at least some of the catalyst particles under second reaction conditions sufficient to produce a second product comprising one or more aromatics.2. The method of claim 1 , wherein the first reaction conditions include a reaction temperature in the fast fluidized bed reactor of 690 to 710° C.3. The method of claim 1 , wherein the first reaction conditions ...

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Номер записи: 78
26-05-2016 дата публикации

PROCESS FOR MAKING TRISILYLAMINE

Номер: US20160145102A1
Автор: Agarwal Rajiv Krishan, Hart James Joseph, JR. Howard Paul, Lo Sai-Hong Andrew, Sluzevich Joseph T., Withers
Принадлежит: AIR PRODUCTS AND CHEMICALS, INC.

The method described herein provides a method for preparing trisilylamine. In one aspect, the method comprises: providing a reaction mixture of trisilylamine and monochlorosilane into a reactor wherein the reaction mixture is at a temperature and pressure sufficient to provide trisilylamine in a liquid phase wherein the reaction mixture is substantially free of an added solvent; contacting the reaction mixture with ammonia to provide a crude mixture comprising trisilylamine and an ammonium chloride solid wherein monochlorosilane is in stoichiometric excess in relation to ammonia; purifiying the crude mixture to provide trisilylamine wherein the trisilyamine is produced at purity level of 90% or greater; and optionally removing the ammonium chloride solid from the reactor.

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Номер записи: 79
07-05-2020 дата публикации

DEVICE AND METHOD FOR CATALYTICALLY CONVERTING CHEMICAL SUBSTANCES AT DWELL TIMES IN THE RANGE OF 0.1-10 SECONDS

Номер: US20200139326A1
Автор: Find Josef, FINGER Kurt-Erich, Friess Markus
Принадлежит: hte GmbH the high throughput experimentation company

Disclosed herein is an apparatus and a method for catalytic conversion of chemical substances in the presence of pulverulent catalysts in a trickle bed reactor with residence times in the range of 0.1-10 seconds, wherein the apparatus includes a trickle bed reactor (), the inlet side of which is functionally connected to a catalyst reservoir vessel () and a reactant feed, and the outlet side of which is functionally connected to a separator (). The separator () has an exit conduit for leading off product stream, wherein the apparatus has the characteristic feature that the exit conduit disposed on the separator () for leading off product stream has a continuously acting valve connected via a controller to a pressure measurement sensor, wherein the continuously acting valve and the pressure measurement sensor form a pressure control circuit with a controller. 1: An apparatus for catalytic conversion of chemical substances in the presence of pulverulent catalysts in a trickle bed reactor with residence times in the range of 0.1-10 seconds , wherein:the apparatus comprises at least a trickle bed reactor, a catalyst reservoir vessel and a separator;the reactor is a tubular reactor having a length in the range of 0.3-3 m and a diameter in the range of 0.3-10 cm;an inlet side of the reactor is functionally connected to at least one catalyst reservoir vessel and at least one reactant feed, and an outlet side of the reactor is functionally connected to the at least one separator; the at least one separator having at least one exit conduit for leading off product stream; andthe apparatus has the characteristic feature that an exit conduit disposed on the separator for leading off product stream has a continuously acting valve connected via a controller to a pressure measurement sensor, in which the continuously acting valve and the pressure measurement sensor form a pressure control circuit with a controller.2: The apparatus according to claim 1 , wherein:the catalyst ...

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Номер записи: 80
07-05-2020 дата публикации

SYSTEMS AND METHODS FOR DISPERSION OF DRY POWDERS

Номер: US20200139336A1
Автор: AHMED RAYHAN, CHNG EWE JIUN, GOPALAKRISHAN RANGANATHAN, POKHAREL LEKHNATH, PRESLEY JASON SCOTT
Принадлежит:

Systems and methods for preparing and dispersing dry powders are disclosed herein. The system includes a powder feeder, a rotating holder or disc configured to receive an input powder from the powder feeder, and one or more ultrasonic transducers. The ultrasonic transducer is configured to create standing waves, which suspend the input powder within a space above the rotating holder disc for collection and subsequent processing and/or use. Also disclosed herein is an adapter configured to fit existing off-the-shelf powder dispensers that includes an ultrasonic transducer configured to suspend an input powder in midair for collection. 1. A system for preparing dry powders for dispersion , comprising:a rotatable holder configured to receive an input powder;a powder feeder tube adapted to deliver the input powder to the rotatable holder; andat least one ultrasonic transducer adjacent to the rotatable holder, configured to suspend particles of the input powder on the rotatable holder as it passes the at lest one ultrasonic transducer.2. The system of claim 1 , further comprising a tube with an inlet end proximate the suspended input powder claim 1 , configured to draw the suspended particles into the tube.3. The system of claim 1 , wherein the tube is a probe tube.4. The system of claim 1 , wherein the tube directs the suspended particles to a de-agglomeration system.5. The system of claim 1 , wherein the tube direts the suspended particles to an aerosol outlet.6. The system of claim 1 , further comprising a brush attached to the powder feeder.7. The system of claim 1 , further comprising a motor in mechanical connection with the rotatable holder.8. The system of claim 1 , wherein the at least one ultrasonic transducer is suspended above the rotatable holder.9. The system of claim 1 , wherein the rotatable holder comprises a rotary disk or round rotary table.10. The system of claim 9 , further comprising a continuous circular groove in a surface of the rotary disk or ...

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Номер записи: 81
07-05-2020 дата публикации

FLUIDIZED BED DEVICE AND METHOD FOR PREPARING PARA-XYLENE AND CO-PRODUCING LIGHT OLEFINS FROM METHANOL AND/OR DIMETHYL ETHER AND TOLUENE

Номер: US20200140355A1
Автор: He Changqing, JIA Jinming, LI Chenggong, Li Hua, Liu Zhongmin, TANG Hailong, Wang Xiangao, Ye Mao, Zhang Cheng, ZHANG Jinling, Zhang Tao, ZHAO Yinfeng
Принадлежит: Dalian Institute of Chemical Physics, Chinese Academy of Sciences

A turbulent fluidized bed reactor, device and method for preparing para-xylene and co-producing light olefins from methanol and/or dimethyl ether and toluene, resolving or improving the competition problem between an MTO reaction and an alkylation reaction during the process of producing para-xylene and co-producing light olefins from methanol and/or dimethyl ether and toluene, and achieving a synergistic effect between the MTO reaction and the alkylation reaction. By controlling the mass transfer and reaction, competition between the MTO reaction and the alkylation reaction is coordinated and optimized to facilitate a synergistic effect of the two reactions, so that the conversion rate of toluene, the yield of para-xylene, and the selectivity of light olefins are increased. The turbulent fluidized bed reactor includes a first reactor feed distributor and a number of second reactor feed distributors and are arranged sequentially along the gas flow direction. 126-. (canceled)27. A turbulent fluidized bed reactor for preparing para-xylene and co-producing light olefins from methanol and/or dimethyl ether and toluene , the turbulent fluidized bed reactor comprising: a first reactor feed distributor and a plurality of second reactor feed distributors , the first reactor feed distributor and the plurality of second reactor feed distributors are sequentially arranged along the gas flow direction in the turbulent fluidized bed reactor;the feed to the first reactor feed distributor comprises toluene and a portion of methanol and/or dimethyl ether;the feed to the second reactor feed distributor comprises methanol and/or dimethyl ether; andthe number of the second reactor feed distributors is in a range from 2 to 10.28. The turbulent fluidized bed reactor of claim 27 , the turbulent fluidized bed reactor further comprising a first reactor gas-solid separator and a second reactor gas-solid separator claim 27 , the first reactor gas-solid separator is placed in a dilute phase ...

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Номер записи: 82
21-08-2014 дата публикации

Powder stirring device

Номер: US20140234177A1
Автор: Hitoshi Takebayashi, Junji Takada, Makoto Hongu, Nobutaka Manabe, Noriyuki Tanaka
Принадлежит: Toyo Tanso Co Ltd

A powder stirring device includes a reaction container and a rotation driving device. The reaction container has a cylindrical outer peripheral wall and a pair of end surface walls. The end surface walls are respectively provided at one end and the other end of the outer peripheral wall. The reaction container is arranged in a heat-insulating cover such that an axis of the outer peripheral wall is in parallel with a horizontal direction. The outer peripheral wall has an inner peripheral surface rotationally symmetric with respect to the axis. During the powder process, the powder is stored in the reaction container, and the reaction container is rotated around a rotation axis that passes through the central axis of the outer peripheral wall by the rotation driving device. In this state, a processing gas is supplied into the reaction container. Also, the processing gas in the reaction container is discharged.

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Номер записи: 83
09-06-2016 дата публикации

STRIPPING VESSEL FOR REMOVING HYDROCARBONS ENTRAINED IN CATALYST PARTICLES

Номер: US20160158741A1
Автор: Craig Andrew Jonathan, Palmas Paolo
Принадлежит:

A stripping vessel for removing hydrocarbons from a catalyst and a process for removing hydrocarbons from a catalyst. In an FCC unit, the stripping vessel includes first and second stripping sections. The first stripping section includes at least one grid having a plurality of interesting members and openings therebetween. The second stripping section includes structured packing such as a plurality of ribbons. The one or more grids are spaced from the structured packing, and from each other, so as to minimize the accumulation of catalyst within the stripping vessel, preferably between about 0.91 m (3 ft) to about 1.5 m (5 ft). 1. A stripping vessel for removing hydrocarbons from catalyst , the stripping vessel comprising:an inlet configured to receive a stream of spent catalyst particles, at least some of the spent catalyst particles comprise entrained hydrocarbons;a first stripping section, the first stripping section including at least one grid, each grid including at least one opening to allow catalyst to pass there through;a second stripping section, the second stripping section including a structured packing comprised of a plurality of ribbons, the at least one grid in the first stripping section being spaced from the structured packing of the second stripping section; and,an outlet configured to pass catalyst particles from the stripping vessel.2. The stripping vessel of further comprising:at least one inlet for a stripping fluid.3. The stripping vessel of wherein the inlet for stripping fluid is disposed below the second stripping section.4. The stripping vessel of further comprising:an internal riser.5. The stripping vessel of wherein the at least one grid in the first stripping section includes a plurality of openings to allow catalyst there through.6. The stripping vessel of the claim 1 , wherein a spacing between the at least one grid in the first stripping section and the structured packing in the second stripping section is between approximately about 0 ...

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Номер записи: 84
07-06-2018 дата публикации

CONTINUOUS PARTICLE MANUFACTURING DEVICE

Номер: US20180154323A1
Автор: Hasegawa Koji, HISAZUMI Koji, KOBAYASHI Makoto, Nagato Takuya
Принадлежит:

A continuous particle manufacturing apparatus comprises a particle drawing section configured to draw particles out of a processing container, a sorting section configured to sort the particles drawn by the particle drawing section into processed particles and unprocessed particles, a discharge section to which the processed particles sorted out by the sorting section are discharged, and a particle returning section configured to return, into the processing container, the unprocessed particles sorted out by the sorting section, the particle returning section being configured to blow the unprocessed particles toward an inner wall surface of the processing container together with an air stream. 1. A continuous particle manufacturing apparatus , which includes a processing container , a processing gas introducing section configured to introduce a processing gas into the processing container , and a spray nozzle arranged in the processing container and configured to spray one processing solution selected from a raw material solution containing raw material powder , a binder solution , and a coating solution , and is configured to perform granulation process or coating process in such a manner that dried particles of the raw material powder produced continuously or intermittently by drying the raw material solution sprayed from the spray nozzle in the processing container , or particles of the raw material powder loaded continuously or intermittently into the processing container are brought into contact with the processing solution sprayed from the spray nozzle while the dried particles of the raw material powder or the particles of the raw material powder are fluidized by the processing gas , and then to continuously or intermittently discharge processed particles that undergo the granulation process or the coating process ,the continuous particle manufacturing apparatus comprising:a particle drawing section configured to draw the particles out of the processing ...

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Номер записи: 85
22-09-2022 дата публикации

RISER REACTOR SYSTEM

Номер: US20220298426A1
Автор: Cui Zhe, LUDOLPH Robert Alexander
Принадлежит:

A reactor and a process for fluid catalytic cracking (FCC) a hydrocarbon feed in the riser-reactor, the process including injecting the hydrocarbon feed into an evaporation zone of the riser-reactor, injecting a first catalyst into the evaporation zone, wherein the first catalyst mixes with the hydrocarbon feed to generate a hydrocarbons stream in the evaporation zone, and wherein the temperature in the evaporation zone is less than 625° C., and passing the hydrocarbons stream from the evaporation zone into a cracking zone of the riser-reactor to generate a cracked product in the cracking zone. 1. A process for fluid catalytic cracking (FCC) a hydrocarbon feed in a riser-reactor , the process comprising:injecting the hydrocarbon feed into an evaporation zone of the riser-reactor;injecting a first catalyst into the evaporation zone, wherein the first catalyst mixes with the hydrocarbon feed to generate a hydrocarbons stream in the evaporation zone, and wherein the temperature in the evaporation zone is less than 625° C.;passing the hydrocarbons stream from the evaporation zone into a cracking zone of the riser-reactor to generate a cracked product in the cracking zone.2. The process according to claim 1 , further comprising:adjusting the amount of first catalyst injected into the evaporation zone to minimize cracking of the hydrocarbons stream in the evaporation zone.3. The process according to claim 1 , wherein vaporization of the hydrocarbon feed and mixing of the hydrocarbon feed with the first catalyst occurs across an entire diameter of the riser-reactor and within the evaporation zone.4. The process according to claim 1 , further comprising:injecting a second catalyst into a wall region located in the cracking zone to further crack the hydrocarbons stream, wherein the injection of the second catalyst minimizes catalyst back-mixing in the wall region and changes the radial velocity distribution of the cracked product in the cracking zone.5. The process according ...

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Номер записи: 86
08-06-2017 дата публикации

FLUIDIZED-BED REACTOR AND PROCESS FOR PREPARING GRANULAR POLYCRYSTALLINE SILICON

Номер: US20170158516A1
Автор: Baumann Bernhard, FORSTPOINTNER Gerhard, PEDRON Simon
Принадлежит: Wacker Chemie AG

A fluidized-bed reactor for preparing granular polycrystalline silicon has a reactor vessel, a reactor tube and a reactor bottom within the reactor vessel, and an intermediate jacket located between the reactor tube and the reactor vessel, a heating device, at least one bottom gas nozzle for introducing of fluidizing gas and at least one secondary gas nozzle for introducing reaction gas, a silicon seed particle feed, an offtake line for granular polycrystalline silicon and reactor offgas discharge, wherein a main element of the reactor tube comprises at least 60% by weight of silicon carbide with a CVD coating having a layer thickness of at least 5 μm and is at least 99.995% by weight of SiC, or a main element of the reactor tube is a sapphire glass comprising at least 99.99% by weight of α-AlO. 119.-. (canceled)20. A fluidized-bed reactor for preparing granular polycrystalline silicon , comprising:{'sub': 2', '3, 'a reactor vessel, a reactor tube and a reactor bottom within the reactor vessel, an intermediate jacket located between an outer wall of the reactor tube and an inner wall of the reactor vessel, a heating device, at least one bottom gas nozzle for the introduction of fluidizing gas and at least one secondary gas nozzle for the introduction of reaction gas, a silicon seed particle feed, a granular polycrystalline silicon offtake line and a reactor offgas discharge, wherein a main element of the reactor tube is a durable main element comprising sapphire glass comprising at least 99.99% by weight of α-AlO, or comprises at least 60% by weight of silicon carbide and has at least on its inside, a CVD coating which has a layer thickness of at least 5 μm and comprises of at least 99.995% by weight of silicon carbide.'}21. The fluidized-bed reactor of claim 20 , wherein an outside of the reactor tube has a CVD coating which has a layer thickness of at least 5 μm and is at least 99.995% by weight of silicon carbide.222. The fluidized-bed reactor as claimed in claim ...

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Номер записи: 87
16-06-2016 дата публикации

APPARATUS AND PROCESS FOR HEATING CATALYST FROM A REACTOR

Номер: US20160167004A1
Автор: Mehlberg Robert L.
Принадлежит:

A process and apparatus for heating catalyst is presented. Cooler catalyst is removed from a reactor and heated with a hot gas in a riser, heated in a heating tube or heated in a heating chamber. Heated catalyst is disengaged from the hot gas if necessary and returned to the reactor. The process and apparatus can be used for producing light olefins. The hot gas may be a flue gas from an FCC regenerator or a combustion gas from a heater. 1. A reactor apparatus comprising:a reactor vessel comprising a hydrocarbon feed inlet, a catalyst outlet in the reactor vessel, a product outlet in the reactor vessel and a catalyst inlet to the reactor vessel;a heating chamber in direct communication with the catalyst outlet and a source of gas;a riser in downstream communication with said heating chamber at a first end; andsaid catalyst inlet in downstream communication with a second end of said riser.2. The reactor apparatus of further comprising said reactor vessel above said heating chamber.3. The reactor apparatus of wherein said catalyst outlet conduit directly communicates said catalyst outlet to the heating chamber.4. The reactor apparatus of wherein said source of gas is an FCC regenerator.5. The reactor apparatus of wherein said source of gas is a hydrocarbon source.6. The reactor apparatus of wherein said feed inlet is above the catalyst outlet.7. The reactor apparatus of further comprising a stripping section below said feed inlet.8. The reactor apparatus of further comprising a disengaging section above said feed inlet in said reactor vessel.9. The reactor apparatus of further comprising a conduit for transferring catalyst to said FCC regenerator.10. A reactor apparatus comprising:a reactor vessel comprising a feed inlet, a catalyst outlet in the reactor vessel, a product outlet in the reactor vessel and a catalyst inlet to the reactor vessel;a heating chamber in direct communication with the catalyst outlet and a source of gas, said reactor vessel being disposed above ...

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Номер записи: 88
16-06-2016 дата публикации

PROCESS AND APPARATUS FOR INDIRECT CATALYST HEATING IN A REGENERATOR

Номер: US20160167005A1
Автор: Fei Zhihao, Sandacz Michael S.
Принадлежит:

A process and apparatus for heating catalyst is presented. Cooler catalyst is removed from a reactor and heated with a hot gas in a riser, heated in a heating tube or heated in a heating chamber. Heated catalyst is disengaged from the hot gas if necessary and returned to the reactor. The process and apparatus can be used for producing light olefins. The hot gas may be a flue gas from an FCC regenerator or a combustion gas from a heater. 1. A reactor apparatus comprising:a reactor vessel comprising a feed inlet, a catalyst inlet to the reactor vessel and a catalyst outlet in the reactor vessel;a catalyst outlet conduit in direct communication with the catalyst outlet;a heating tube in downstream communication with said catalyst outlet conduit, said heating tube positioned in a catalyst regenerator; and the catalyst inlet in downstream communication with said heating tube.2. The reactor apparatus of wherein said catalyst inlet to the reactor vessel is above the catalyst outlet.3. The reactor apparatus of further comprising a riser in communication with said heating tube.4. The reactor apparatus of wherein said riser is in direct claim 3 , downstream communication with said catalyst outlet conduit and said heating tube is downstream communication with said riser.5. The reactor apparatus of wherein said heating tube is in direct downstream communication with said catalyst outlet conduit and said riser is in downstream communication with said heating tube.6. The reactor apparatus of further comprising a disengager at a top end of said riser for disengaging hot gas from said catalyst stream.7. The reactor apparatus of wherein said regenerator has two chambers and said heating tube is in said upper chamber or said lower chamber.8. The reactor apparatus of wherein said heating tube is positioned within the wall of the regenerator.9. The reactor apparatus of wherein said heating tube comprises a coil that winds around the interior of the regenerator.10. A reactor apparatus ...

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Номер записи: 89
16-06-2016 дата публикации

PROCESS AND APPARATUS FOR HEATING CATALYST IN A REGENERATOR

Номер: US20160167006A1
Автор: KULPRATHIPANJA Sathit, Palmas Paolo
Принадлежит:

A process and apparatus for heating catalyst is presented. Cooler catalyst is removed from a reactor and heated with a hot gas in a riser, heated in a heating tube or heated in a heating chamber. Heated catalyst is disengaged from the hot gas if necessary and returned to the reactor. The process and apparatus can be used for producing light olefins. The hot gas may be a flue gas from an FCC regenerator or a combustion gas from a heater. 1. A reactor apparatus comprising:a regenerator for regenerating a first catalyst stream to produce a regenerated first catalyst stream and a first flue gas stream;a reactor vessel comprising a feed inlet, a catalyst outlet in the reactor vessel and a catalyst inlet to the reactor vessel above the catalyst outlet;a hopper in said regenerator in downstream communication with said catalyst outlet, said hopper having a bottom closed to an interior of said regenerator and a top open to said interior of said regenerator;said catalyst inlet to the reactor vessel being in communication with said hopper;an air heater located outside of said regenerator, and said hopper being in downstream communication with said air heater; anda riser in downstream communication with said catalyst outlet and said air heater at a first end, and said hopper being in downstream communication with a second end of said riser.2. The reactor apparatus of further comprising a first outlet for said regenerated first catalyst stream in said regenerator and a second claim 1 , separate outlet for said second catalyst stream in said regenerator.3. The reactor apparatus of further comprising a single flue gas outlet from said regenerator.4. The reactor apparatus of further comprising a side wall of said hopper being closed to an interior of said regenerator.56-. (canceled)7. The reactor apparatus of wherein said regenerator comprises a lower chamber and an upper chamber and said hopper is in said upper chamber.8. The reactor apparatus of wherein said riser is in ...

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Номер записи: 90
16-06-2016 дата публикации

PROCESS AND APPARATUS WITH CATALYST HEATING IN A RISER

Номер: US20160168050A1
Автор: Fei Zhihao, Lim Hosoo, Luebke Charles P., Mehlberg Robert L., Palmas Paolo, Wolschlag Lisa M.
Принадлежит:

A process and apparatus for heating catalyst is presented. Cooler catalyst is removed from a reactor and heated with a hot gas in a riser, heated in a heating tube or heated in a heating chamber. Heated catalyst is disengaged from the hot gas if necessary and returned to the reactor. The process and apparatus can be used for producing light olefins. The hot gas may be a flue gas from an FCC regenerator or a combustion gas from a heater. 1. A process for heating a catalyst bed to promote a reaction comprising:passing a hydrocarbon feed stream to a reactor vessel to react over a catalyst bed in the reactor vessel and produce a product gas;withdrawing said product gas stream from the reactor vessel;withdrawing a catalyst stream from the reactor vessel;passing the catalyst stream from the reactor up a riser;heating the catalyst stream with a hot gas stream in the riser; andpassing the heated catalyst stream to the reactor vessel.2. The process of wherein said product gas stream and said catalyst stream are withdrawn from the reactor vessel separately.3. The process of wherein the catalyst stream is withdrawn from a lower section of the reactor vessel.4. The process of further comprising disengaging a heated catalyst stream from the hot gas stream.5. The process of wherein the hot gas stream is a flue gas stream from an FCC regenerator.6. The process of wherein the flue gas stream is filtered before it heats the catalyst stream.7. The process of further comprising adding one or more of nitrogen claim 5 , steam claim 5 , air claim 5 , fuel oil or paraffins to the flue gas stream.8. The process of wherein the hydrocarbon feed stream is derived from a product of an FCC reactor in communication with the FCC regenerator.9. The process of wherein the hot gas stream comprises one or more of nitrogen claim 1 , steam claim 1 , air claim 1 , fuel oil claim 1 , paraffins or combustion gas.10. The process of wherein the hot gas stream propels the catalyst stream up the riser.11. The ...

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Номер записи: 91
14-06-2018 дата публикации

METHOD FOR OXYGENATE CONVERSION IN A FLUID CATALYTIC CRACKER

Номер: US20180161743A1
Автор: "ONEILL Brandon J.", BILLIMORIA Rustom M., JALAN Amrit, McCarthy Stephen J., Mhadeshwar Ashish B.
Принадлежит:

Provided herein are dual riser fluid catalytic cracking processes for producing light olefins from an oxygenate feed, such as a methanol feed, in a conventional FCC unit. In certain aspects the processes comprise cracking a hydrocarbon feed in a first riser comprising a first catalyst under first riser conditions to form a first effluent enriched in olefins, light gasoil, gasoline, or a combination thereof; cracking a hydrocarbon oxygenate feed in a second riser comprising a second catalyst under second riser conditions to form a second effluent enriched in olefins; recovering the first and second catalyst from the first and second effluents in a common reactor; regenerating the recovered first and second catalyst in a regenerator using heat from the exothermic cracking of the hydrocarbon oxygenate feed; and recirculating the regenerated first and second catalyst to the first and second riser. 1. A dual riser fluid catalytic cracking process , comprising:cracking a hydrocarbon feed in a first riser comprising a first catalyst under first riser conditions to form a first effluent enriched in olefins, light gasoil, gasoline, or a combination thereof;cracking a hydrocarbon oxygenate feed in a second riser comprising a second catalyst under second riser conditions to form a second effluent enriched in olefins;recovering the first and second catalyst from the first and second effluents in a common reactor;regenerating the recovered first and second catalyst in a regenerator using heat from the exothermic cracking of the hydrocarbon oxygenate feed; andrecirculating the regenerated first and second catalyst to the first and second riser.2. The process of claim 1 , wherein the hydrocarbon oxygenate feed includes methanol.3. The process of claim 1 , wherein the second riser conditions include a catalyst activity claim 1 , α claim 1 , of about 5 to 130.4. The process of claim 3 , wherein the catalyst activity claim 3 , α claim 3 , is about 10.5. The process of claim 1 , ...

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Номер записи: 92
14-06-2018 дата публикации

SYSTEMS AND METHODS FOR PRODUCING SYNGAS FROM A SOLID CARBON-CONTAINING SUBSTANCE USING A REACTOR HAVING HOLLOW ENGINEERED PARTICLES

Номер: US20180163148A1
Автор: Chandran Ravi, Newport Dave G., Whitney Hamilton Sean Michael, Zenz Jonathan A.
Принадлежит: Thermochem Recovery International, Inc.

A solids circulation system receives a gas stream containing char or other reacting solids from a first reactor. The solids circulation system includes a cyclone configured to receive the gas stream from the first reactor, a dipleg from the cyclone to a second reactor, and a riser from the second reactor which merges with the gas stream received by the cyclone. The second reactor has a dense fluid bed and converts the received materials to gaseous products. A conveying fluid transports a portion of the bed media from the second reactor through the riser to mix with the gas stream prior to cyclone entry. The bed media helps manipulate the solids that is received by the cyclone to facilitate flow of solids down the dipleg into the second reactor. The second reactor provides additional residence time, mixing and gas-solid contact for efficient conversion of char or reacting solids. 1100. A reactor () for producing carbon monoxide , carbon dioxide , and hydrogen from a solid carbon-containing substance , comprising:(a) a fluidized bed comprising bed material in the form of hollow engineered particles selected from the group consisting of alumina, zirconia, sand, olivine sand, limestone, dolomite and metal catalyst;{'b': '160', '(b) a freeboard () located above a bed level of the fluidized bed;'}{'b': 700', '160', '100', '700, '(c) a cyclone () positioned within the freeboard () of the reactor (), the cyclone () configured to capture and recycle entrained bed material and char particles to the fluidized bed;'}{'b': 160', '160, 'sub': 2', '2, '(d) a plurality of fluid addition stages located in the freeboard (), the plurality of fluid addition stages configured to introduce a mixture of oxygen and superheated steam to the freeboard () to promote conversion of char into CO, CO, and H;'}{'b': 140', '130, '(e) a distributor () configured to accept and distribute a fluidization media () comprising oxygen and superheated steam into the bed material of the fluidized bed;'}{'b': ...

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Номер записи: 93
15-06-2017 дата публикации

Slide Valve Intended for Flow Control in a Fluid Catalytic Cracking Unit

Номер: US20170165623A1
Автор: Bories Marc, Echard Michaël, Lesage Romain, Raboin Jean-Christophe, Rezgui Lassad
Принадлежит:

The invention relates to a slide valve () comprising: 110.-. (canceled)11. A slide valve comprising:a body having a through-duct for the passage of a fluid, the flow rate of which is to be controlled,at least one gate slidably mounted inside the body, crosswise to the duct, and partially or completely closing off the duct, the gate being movable between a position in which the duct is partially or completely closed off and a position in which the duct is open,in which the following are defined as portions subject to erosion:portions of the body that delimit the duct, at least one portion of the at least one gate located across the duct when{'sub': 4', '3', '4', '2', '3, 'the at least one gate partially or completely closes off the duct, characterized in that at least the portions subject to erosion are made of metal covered with a layer of ceramic material or are entirely made of ceramic material and the ceramic material comprises a ceramic matrix selected from the group consisting of silicon carbide SiC, boron carbide BC, silicon nitride SiN, aluminium nitride AlN, boron nitride BN, alumina AlO, and mixtures thereof, wherein carbon fibres or ceramic fibres are incorporated in the ceramic matrix.'}12. The slide valve according to claim 11 , characterized in that the ceramic fibres comprise crystalline alumina fibres claim 11 , mullite fibres claim 11 , crystalline or amorphous silicon carbide fibres claim 11 , zirconia fibres claim 11 , silica-alumina fibres claim 11 , or mixtures thereof.13. The slide valve according to claim 11 , characterized in that claim 11 , when the portions of the slide valve subject to erosion are made entirely of ceramic material claim 11 , the ceramic material is a sintered ceramic material.14. The slide valve according to claim 11 , characterized in that claim 11 , when the portions of the slide valve subject to erosion are made entirely of ceramic material claim 11 , the ceramic material is a Ceramic Matrix Composite (CMC).15. The slide ...

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Номер записи: 94
21-06-2018 дата публикации

DEVICE ALLOWING THE TEMPORARY STORAGE AND PUTTING BACK INTO CIRCULATION OF A CERTAIN QUANTITY OF CATALYST IN CATALYTIC REFORMING INSTALLATIONS

Номер: US20180169601A1
Автор: BANCEL Thierry, FLOER Cecile, LAMBERT Fabian, RICHARD Florence, VINAY Guillaume
Принадлежит: IFP ENERGIES NOUVELLES

The present invention describes a device that firstly allows temporary storage of a certain quantity of catalyst and, secondly, the putting back into circulation of said quantity in the regenerative reforming installations following an interruption in the circulation of the catalyst. 153532575711257715. Catalytic reactor implementing a ring-shaped moving bed catalyst , limited at its outer periphery by walls forming a cylindrical basket () , and at its internal periphery by a central collector () , with the catalyst flowing slowly by force of gravity into the space between the basket () and the central collector () , and circulating downwards through circulation legs () positioned on the substantially hemispherical base of said reactor , said baskets being movable along a substantially vertical axis over a distance of from a few centimetres to 10 cm , this basket () being equipped with flaps () themselves substantially vertical , positioned on the lower part of the basket () , in the extension of the wall of said flap () , in which reactor , when there is an interruption in the circulation of the catalyst , a catalyst storage space () situated in the lower part of the reactor adjoining the wall , and close to the dip legs () , is released by moving the basket () and attached flaps () assembly upwards , the flap () itself being equipped with a deflector () rigidly or freely attached , and which forms an angle alpha with the vertical of between 30 and 60° , preferably of between 45 and 55°.2157. Catalytic reactor according to claim 1 , wherein the deflector () is rigidly connected to the flap ().31115. Catalytic reactor according to claim 1 , wherein the catalyst is put back into circulation by gravity as soon as circulation has been re-established claim 1 , with the storage area () progressively emptying itself of the catalyst by means of the deflector ().45553. Moving bed catalytic reactor according to claim 1 , in which the catalyst is enclosed in ring-shaped ...

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Номер записи: 95
22-06-2017 дата публикации

REDUCED-CAPACITY MOVING-BED REACTOR WITH RADIAL FLOW OF THE FEEDSTOCK

Номер: US20170173549A1
Автор: BAZER-BACHI Frederic, LAMBERT Fabian, PLAIS Cecile
Принадлежит: IFP ENERGIES NOUVELLES

This invention describes a moving-bed catalyst reactor having radial flow of the feedstock called moving-bed radial reactor, consisting of 3 zones called upper hemispheric body (III), lateral zone (II), and lower hemispheric body (I), the three zones being connected together by means of flanges. 1) Moving-bed reactor having a radial flow of the feedstock and having a gravitational flow of the catalyst consisting of 3 units called upper hemispheric body (III) , lateral body (II) , and lower hemispheric body (I) ,{'b': 6', '7', '9, 'the upper hemispheric body (III) being provided with an intake pipe () for the feedstock and with legs () for introducing the catalyst communicating with conical elements () that provide access to{'b': 4', '3', '3', '4, 'the annular zone (IIa) located between the central collector () and the outer screen () over a radial distance of between 100 and 400 mm, said outer screen () being positioned parallel to the lateral wall (II) of the reactor and at a certain distance from the latter, and the central collector () extending approximately along the longitudinal axis of symmetry of the reactor over the entire height of said lateral zone (IIa) and continuing inside{'b': 8', '1', '4, 'claim-text': [{'b': 3', '2', '4', '5, 'the outer screen () being supported by a supporting ring (), which extends over the entire periphery of the lower hemispheric body (I) and which is attached to the latter, and the central collector () being closed at its upper end by a solid plate (),'}, {'b': 3', '4', '1', '2, 'said reactor being characterized in that the upper hemispheric body (III) is connected by flanges B, B to the lateral body (II), and the lateral body being furthermore connected by flanges B, B to the lower hemispheric body (I).'}], 'the lower hemispheric body (I) that carries the drain legs () of the catalyst and the drain pipe () for the reaction effluents, itself connected to the lower end of the central collector (),'}23) Reactor according to claim ...

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Номер записи: 96
02-07-2015 дата публикации

Solids Circulation System and Method For Capture and Conversion of Reactive Solids

Номер: US20150184091A1
Автор: Dave G. Newport, Hamilton Sean Michael Whitney, Jonathan A. Zenz, Ravi Chandran
Принадлежит: ThermoChem Recovery International Inc

A solids circulation system receives a gas stream containing char or other reacting solids from a first reactor. The solids circulation system includes a cyclone configured to receive the gas stream from the first reactor, a dipleg from the cyclone to a second reactor, and a riser from the second reactor which merges with the gas stream received by the cyclone. The second reactor has a dense fluid bed and converts the received materials to gaseous products. A conveying fluid transports a portion of the bed media from the second reactor through the riser to mix with the gas stream prior to cyclone entry. The bed media helps manipulate the solids that is received by the cyclone to facilitate flow of solids down the dipleg into the second reactor. The second reactor provides additional residence time, mixing and gas-solid contact for efficient conversion of char or reacting solids.

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Номер записи: 97
08-07-2021 дата публикации

MAXIMUM OLEFINS PRODUCTION UTILIZING MULTI-STAGE CATALYST REACTION AND REGENERATION

Номер: US20210207039A1
Автор: Dharia Dilip, McQuiston Harvey, Singh Raj Kanwar
Принадлежит:

A method and system for increasing olefin production and quality from a hydrocarbon feed comprising a fully integrated multi-stage catalyst regeneration zones with multi-stage reaction zones in series and/or parallel. The multi-stage regeneration with at least one partial and one full burn zone provides an independent control to achieve the lowest possible regenerated catalyst temperature, resulting in highest possible catalyst to oil ratio required to maximize olefins yields through increased catalytic cracking in a multi stage FCC riser/risers. 1. A method for increasing olefin production from a hydrocarbon feed , said method comprises: a) delivering from a multi-stage catalyst regenerator a fully-regenerated catalyst from at least one catalyst full regeneration zone to a primary riser reactor; b) cracking the hydrocarbon feed in the primary riser reactor to produce a first cracked product , and spent catalyst; c) further cracking the first cracked product in a bed cracking reaction zone atop the primary riser reactor to produce a second cracked product including olefins; d) separating the first cracked product and the second cracked product including olefins from the spent catalyst in a reactor vessel comprising the bed cracking reaction zone; e) recovering the first cracked product and second cracked product including olefins; and f) passing the spent catalyst from the reactor vessel to the multi-stage catalyst regenerator comprising the at least one catalyst full regeneration zone and at least one catalyst partial-regeneration zone , wherein the spent catalyst is partially regenerated in the catalyst partial regeneration zone to provide partially-regenerated catalyst and forwarding the partially-regenerated catalyst to the catalyst full regeneration zone to provide fully regenerated catalyst.2. The method of claim 1 , wherein the multi-stage catalyst regenerator comprises two catalyst regenerator vessels that operate in series with one another.3. The method of ...

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Номер записи: 98
09-07-2015 дата публикации

PROCESS FOR PREPARING ETHYLENE AND/OR PROPYLENE

Номер: US20150190773A1
Автор: CHEN Ye-Mon, CHEWTER Leslie Andrew, Nisbet Timothy Michael, VAN WESTRENEN Jeroen, Vijayakumari Sivakumari Sadasivan
Принадлежит:

A process for preparing ethylene and/or propylene, wherein oxygenates and olefins are converted to ethylene and/or propylene over a zeolite-comprising catalyst, in two reaction steps. The catalyst is circulated in the reaction system. 1. A process for preparing ethylene and/or propylene , wherein oxygenates and olefins are converted to ethylene and/or propylene over a zeolite-comprising catalyst , comprising the steps of:a) reacting in a first reactor an oxygenate feed over the zeolite-comprising catalyst at a temperature in the range of from 350 to 1000° C. and retrieving from the first reactor a first reactor effluent stream comprising gaseous products, including ethylene and/or propylene, and zeolite-comprising catalyst;b) reacting in a second reactor an olefin feed over the zeolite-comprising catalyst at a temperature in the range of from 500 to 700° C. and retrieving from the second reactor a second reactor effluent stream comprising gaseous products, including ethylene and/or propylene, and zeolite-comprising catalyst;c) providing the first and second reactor effluent stream to one or more gas/solid separators to retrieve zeolite-comprising catalyst from the first and second reactor effluent;d) providing part of the zeolite-comprising catalyst retrieved in step (c) to the first reactor;e) regenerating another part of the zeolite-comprising catalyst retrieved in step (c) by contacting the zeolite-comprising catalyst with oxygen at elevated temperatures to provide a hot regenerated zeolite-comprising catalyst; andf) providing part of the hot regenerated zeolite-comprising catalyst to the first reactor and another part of the hot regenerated zeolite-comprising catalyst to the second reactor.2. A process according to claim 1 , wherein at least part of the first and second effluent are provided to the same gas/solid separator.3. A process according to claim 1 , wherein the first reactor and/or the second reactor is a riser reactor.4. A process according to claim 1 ...

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Номер записи: 99
15-07-2021 дата публикации

SLURRY PHASE REACTOR WITH INTERNAL CYCLONES

Номер: US20210213408A1
Автор: Piotter Douglas, Schoessow Cassandra
Принадлежит: Kellogg Brown & Root LLC

A system for processing a hydrocarbon feed has a final stage reactor and internal separator with cyclone that forms a substantially gas stream and a substantially non-gas stream. The substantially gas stream is sent directly from the final stage reactor and separator to further downstream processing. 1. A system for processing a hydrocarbon feed , comprising:a plurality of serially aligned reactors, the plurality of reactors including a final stage reactor, the final stage reactor including:a vessel,an inlet formed in the vessel for receiving the hydrocarbon feed,a reactor section formed in the vessel, the reactor section receiving the hydrocarbon feed via the inlet; and a nozzle separating the reactor section from the separator section, the nozzle having an opening directing the hydrocarbon feed, hydrogen, and reaction products from the reactor section to the separator section,', 'a first outlet formed in the vessel from which the substantially non-gas stream exits the vessel;', 'at least one cyclone separator positioned inside the separator section and configured to produce the substantially gas stream; and', 'a second outlet from which the substantially gas stream exits the vessel., 'a separator section formed in the vessel, the separator section configured to form a substantially gas stream and a substantially non-gas stream, the separator section including2. The system of claim 1 , wherein the plurality of serially aligned reactors further includes a first stage reactor claim 1 , wherein the first stage reactor is the first reactor through which the hydrocarbon feed is reacted and the final stage reactor is the last reactor through which the hydrocarbon feed is reacted claim 1 , wherein the hydrocarbon feed is reacted with at least a first additive in the first stage reactor and reacted with at least a second additive in the final stage reactor.3. The system of claim 2 , wherein the first additive is selected from one of: activated carbon claim 2 , iron claim 2 ...

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Номер записи: 100