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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 5045. Отображено 100.
14-03-2013 дата публикации

Method and device for the metered addition of fluids into reaction vessels

Номер: US20130064738A1
Автор: Andreas MÄCHLER, Christine Schnetz, Fritz Bircher, Manfred Schär, Philipp Haslebacher, Stefan Berger
Принадлежит: RESEACHEM GmbH

Proposed is a metering device ( 87, 54 ) for introducing a fluid ( 31 ) into a reaction vessel such as, for example, a bioreactor ( 2 ). The metering device according to the disclosure comprises a closure element ( 89 ) for closing the reaction vessel, at least one drop generator ( 33 ) arranged in the closure element, and a feed line ( 91 ) serving for feeding the fluid to the at least one drop generator. The drop generator comprises a nozzle ( 36 ) for dispensing the fluid into the reaction vessel, and a valve ( 35 ). In the closed state, the valve disconnects the nozzle from the feed line. The drop generator is suitable for generating individual drops of the fluid.

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Номер записи: 1
28-03-2013 дата публикации

Static reactive jet mixer, and methods of mixing during an amine-phosgene mixing process

Номер: US20130079550A1
Автор: Hua Bai, Jorg-Peter Gehrke, Joydeep Mukherjee, Paul Aaron Gillis, Sanjib Kumar Das Sharma
Принадлежит: Dow Global Technologies LLC

This disclosure relates to a static mixer ( 1 ) with a plurality of nozzles, and more generally, to a mixer and method of use thereof for mixing phosgene and amine with shaped jets or at least two rows of nozzles ( 15,16 )where the second row ( 16 ) is used to enrich an area of deficit of the phosgene flow within the static reactive jet mixer ( 1 ). Configurations of enriching secondary flow include the use of concentric, eccentric, or offset jets of amine/phosgene, and the use of nozzles with different and regular geometries to help focus amine/phosgene to a specific area of the principal phosgene flow.

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Номер записи: 2
16-01-2014 дата публикации

Apparatus for generating 1-methylcyclopropene

Номер: US20140017134A1
Автор: Jin Wook Chung, Sang Ku Yoo
Принадлежит: ERUM BIOTECHNOLOGIES Inc

Provided is an apparatus for generating 1-methylcyclopropene. The apparatus of the present invention may enable the immediate and convenient generation of 1-methylcyclopropene in a desired location using stable 1-methylcyclopropene precursors.

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Номер записи: 3
27-02-2014 дата публикации

Methane Conversion Apparatus and Process with Improved Mixing Using a Supersonic Flow Reactor

Номер: US20140058168A1
Автор: Christopher Naunheimer, Gavin P. Towler, Robert L. Bedard
Принадлежит: UOP LLC

Apparatus and methods are provided for converting methane in a feed stream to acetylene. A supersonic reactor is used for receiving the methane feed stream and heating the methane feed stream to a pyrolysis temperature. A high temperature carrier stream passes through the reactor chamber at supersonic speeds. According to various aspects, a static mixer is provided for mixing the methane feed stream and the carrier stream.

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Номер записи: 4
01-01-2015 дата публикации

Generating cellulosic-renewable identification numbers in a refinery

Номер: US20150000186A1
Автор: Barry A. Freel, Robert G. Graham
Принадлежит: Ensyn Renewables Inc

The present application generally relates to methods of generating cellulosic-renewable identification numbers by thermally processing a cellulosic biomass to form a renewable fuel oil, and then co-processing the renewable fuel oil with a petroleum fraction in a refinery to form a cellulosic-renewable identification number-compliant fuel.

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Номер записи: 5
07-01-2021 дата публикации

Taxane Particles and Their Use

Номер: US20210000786A1
Автор: Gary E. Clapp, Jahna ESPINOSA, Jake SITTENAUER, Joseph FARTHING, Julia K. Fischer, Mark D. Williams, Matthew MCCLOREY, Michael BALTEZOR, Samuel Campbell
Принадлежит: CritiTech Inc

Compositions are provided that include having at least 95% by weight of a taxane, or a pharmaceutically acceptable salt thereof, where the particles have a mean bulk density between about 0.050 g/cm3 and about 0.15 g/cm3, and/or a specific surface area (SSA) of at least 18 m2/g, 20 m2/g, 25 m2/g, 30 m2/g, 32 m2/g, 34 m2/g, or 35 m2/g. Methods for making and using such compositions are also provided.

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Номер записи: 6
07-01-2021 дата публикации

Microdroplet/bubble-producing device

Номер: US20210001340A1
Автор: Naotomo TOTTORI, Takasi Nisisako
Принадлежит: Tokyo Institute of Technology NUC

The invention provides a microdroplet- or bubble-producing device that does not require separate through-holes for different liquid droplet/air bubble-producing flow channels. The droplet-producing flow channels are configured in a three-dimensional manner unlike in a conventional device where they are configured in a two-dimensional plane, and therefore the flow channels can be provided in a more high-density configuration than the prior art. In the microdroplet/bubble-producing device comprising slit(s) and the row of the plurality of microflow channels, the slit(s) is/are a continuous phase supply slit, a dispersion phase supply slit and a discharge slit, the plurality of microflow channels are configured so that the ends of the slit(s) and the two supply ports on both sides or the supply port and discharge port on either side are mutually connected, and at the sites of connection between the microflow channels and the slit(s), the dispersion phase undergoes shear with the continuous phase flow as the driving force, producing droplets or air bubbles of the dispersion phase, which are recovered from the discharge port.

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Номер записи: 7
02-01-2020 дата публикации

Virtual photon catalysis apparatus and method for catalytic treatment by using the virtual photon catalysis apparatus

Номер: US20200001264A1
Автор: Xiaomao WAN, Xin Li, Yu Wan
Принадлежит: Harbin Wanyu Technology Co ltd

A virtual photon catalysis apparatus and a method for catalytic treatment using the virtual photon catalysis apparatus. The virtual photon catalysis apparatus includes a housing; and a catalysis unit built in the housing, including a rectangular magnet group, a magnetic force enhancing post, and a magnetically permeable shoe, where an SS pole and an NN pole of a rectangular magnet in the rectangular magnet group form a magnetic field line of a corresponding magnetic field center, the magnetic force enhancing post is used for enhancing a magnetic force from the magnetic field center to a corresponding magnetic field edge, and the magnetically permeable shoe transfers and centralizes the magnetic field from the magnetic field center to the corresponding magnetic field edge, where an angle between junctions between two ends of the magnetically permeable shoe and a central wall of the magnetically permeable shoe is greater than 90 degrees.

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Номер записи: 8
02-01-2020 дата публикации

PROCESSES FOR THE MANUFACTURE OF ISOBUTYLENE, POLYISOBUTYLENE, AND DERIVATIVES THEREOF

Номер: US20200002246A1
Автор: Baxter, Jr. Clyde Edward
Принадлежит:

In an embodiment, a process to convert a feed includes introducing a feed to an oligomerization catalyst in an oligomerization reactor to form a first reactor effluent; introducing the first reactor effluent to a distillation unit to form a first distillation effluent and a second distillation effluent, the second distillation effluent comprising an oligomer of isobutylene; and introducing the second distillation effluent to a cracking reactor to form a cracking reactor effluent comprising a high purity isobutylene. In another embodiment, an apparatus includes a feed line coupled to a first end of an oligomerization reactor; a first distillation unit coupled with a second end of the oligomerization reactor; a first end of a cracking reactor coupled to a second end of the first distillation unit via a first line; a first end of an isomerization reactor coupled to: a third end of the first distillation unit and the feed line. 1. A process to convert a feed , comprising:introducing a feed comprising isobutylene to an oligomerization catalyst in an oligomerization reactor to form a first reactor effluent comprising one or more oligomers of isobutylene;introducing the first reactor effluent to a first distillation unit to form a first distillation effluent and a second distillation effluent, the second distillation effluent comprising one or more oligomers of isobutylene; andintroducing the second distillation effluent to a cracking reactor to form a cracking reactor effluent, the cracking reactor effluent comprising a high purity isobutylene.2. The process of claim 1 , further comprising introducing the first distillation effluent to an isomerization reactor to form an isomerized product effluent claim 1 , the isomerized product effluent enriched in isobutylene;combining the isomerized product effluent with the feed comprising isobutylene; andintroducing the isomerized product effluent to the oligomerization reactor.3. The process of claim 2 , further comprising purging ...

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Номер записи: 9
03-01-2019 дата публикации

PROCESS FOR THE PRODUCTION OF THERMALLY MODIFIED STARCH

Номер: US20190002593A1
Автор: Vezzani Massimo
Принадлежит: Ambiente E Nutrizione S.R.L.

Process for the production of thermally modified starch comprising the steps of mixing starch in powder form having a specific moisture content with an alkaline water solution to obtain a wet powder; feeding a continuous flow of said wet powder into a continuous dryer together with a continuous flow of hot air; discharging a continuous flow of dried powder from said continuous drier; supplying said continuous flow of said dried powder into a turbo-reactor, in which the inner wall of said turbo-reactor is maintained at a specific temperature; converting said dried powder into a thermally inhibited starch; and discharging said thermally inhibited starch from said turbo-reactor; it is also disclosed a thermally inhibited starch obtained from the aforementioned process with enhanced physical chemical properties. 1. A process for continuous modification of starch , comprising the steps of:a) mixing starch in powder form having a moisture content between 9% and 25% with an alkaline water solution to obtain a wet powder;b) feeding a continuous flow of said wet powder into a continuous dryer together with a continuous flow of hot air, said flow of hot air having a temperature between 100° C. and 160° C.;c) discharging a continuous flow of dried powder from said continuous drier, said dried powder having a moisture content between 2% and 4%;d) providing a turbo-reactor comprising a cylindrical tubular body having at least one inlet opening for the introduction of said continuous flow of dried powder and at least one discharge opening, a heating jacket for bringing the temperature of said tubular body to a predetermined temperature and a rotor, disposed in the cylindrical tubular body and comprising a shaft provided with elements projecting radially from it;e) supplying said continuous flow of said dried powder into said turbo-reactor, in which the inner wall of said turbo-reactor is maintained at a temperature between 150° C. and 250° C. by means of said heating jacket and ...

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Номер записи: 10
01-01-2015 дата публикации

Fluidized catalytic cracking apparatus

Номер: US20150004067A1
Автор: Barry A. Freel, Robert G. Graham
Принадлежит: Ensyn Renewables Inc

The present application generally relates to a fluidized catalytic cracking apparatus having one or more ports for injecting a renewable fuel oil for co-processing the renewable fuel oil and a petroleum fraction.

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Номер записи: 11
14-01-2021 дата публикации

CATALYTIC CRACKING SYSTEM WITH BIO-OIL PROCESSING

Номер: US20210008517A1
Автор: Boatman Digna, Gbordzoe Eusebius Anku, Patel Bandish
Принадлежит:

A catalytic cracking system in which liquid hydrocarbon and bio-oil are directed into a reactor riser of a fluid catalytic cracking unit by separate feed spray nozzle assemblies. To protect liquid bio-oil directed through the liquid bio-oil feed nozzle assembly from high temperature degradation, an insulating layer is provided between a central bio-oil feed tube in a concentrically surrounding atomizing gas passageway. Cooling channels also may be provided in the spray tip of the bio-oil feed nozzle assembly. 1. A catalytic cracking system comprising:a catalytic cracking reactor;a riser communicating upwardly to said catalytic cracking reactor;a supply of a liquid hydrocarbon;a first feed spray nozzle assembly mounted in and extending through a wall of said riser and having a spray tip at a downstream end, said first feed spray nozzle assembly having an upstream end coupled to a supply of liquid hydrocarbon and a supply of atomizing gas such that liquid hydrocarbon directed through said first feed spray nozzle assembly is atomized by the atomizing gas and discharged from said spray tip into riser as a finely atomized liquid hydrocarbon spray;a second feed spray nozzle assembly comprising an elongated nozzle body mounted in and extending through the wall of said catalytic cracking riser and having a spray tip at a downstream end;a bio-oil feed tube supported within the elongated nozzle body having an upstream end connected to a supply of a liquid bio-oil for directing liquid bio-oil through bio-oil feed tube to said spray tip;said elongated nozzle body defining an annular atomizing gas passage in surrounding relation to said bio-oil feed tube; said annular atomizing gas passage being connected to a supply of atomizing gas for direction through said annular atomizing gas passage for atomizing liquid bio-oil discharging from the liquid feed tube and spray tip into a fine particle liquid bio-oil spray; andan annular insulating layer between said bio-oil feed tube and ...

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Номер записи: 12
11-01-2018 дата публикации

Inherently safe oxygen/hydrocarbon gas mixer

Номер: US20180009662A1
Автор: Bolaji Olayiwola, Eric Clavelle, Kamal Elias Serhal, Shahin Goodarznia, Vasily Simanzhenkov
Принадлежит: Nova Chemicals International SA

Provided herein is a gas mixer for the safe mixing of a hydrocarbon containing gas with a gaseous oxidant. The gas mixer and method for mixing described includes a closed mixing vessel where bubbles of gas injected at the bottom of the vessel are mixed during their rise to the top of the vessel, forming a homogeneous mixture that can safely be removed. This simple design and method allows for safe mixing of gases and is applicable to catalytic oxidative processes such as oxidative dehydrogenation of paraffins where there is a risk of thermal runaway of reactions.

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Номер записи: 13
14-01-2021 дата публикации

ONLINE PRODUCTION OF ORGANIC PEROXIDE USING A CATALYST BED

Номер: US20210009515A1
Автор: Coleman Todd, FRY Slaton, YEAMAN Tim
Принадлежит:

A method of producing an organic peroxide includes introducing an organic solution and a peroxide solution into a mixing tank to form a mixture. The method further includes circulating the mixture over a fixed catalyst bed to form the organic peroxide and measuring a concentration of the organic peroxide in the mixture. Further, the method includes removing at least a portion of the mixture when the concentration reaches a set value. 1. A method of producing an organic peroxide comprising:introducing an organic solution and a peroxide solution into a mixing tank to form a mixture;circulating the mixture over a fixed catalyst bed to form the organic peroxide;measuring a concentration of the organic peroxide in the mixture; andremoving at least a portion of the mixture when the concentration reaches a set value.2. The method according to claim 1 , wherein the peroxide solution comprises hydrogen peroxide and water.3. The method according to claim 2 , wherein the peroxide solution comprises 10 to 50 wt % of hydrogen peroxide based on a total weight of the peroxide solution.4. The method according to claim 1 , wherein the organic solution comprises water and an organic acid having 1 to 8 carbon atoms.5. The method according to claim 4 , wherein the organic solution comprises 10 to 50 wt % of the organic acid based on a total weight of the organic solution.6. The method according to claim 4 , wherein the organic acid is acetic acid.7. The method according to claim 5 , wherein the organic acid is acetic acid.8. The method according to claim 1 , wherein the fixed catalyst bed comprises an acid resin.9. The method according to claim 1 , wherein the set value is between 50 and 2000 ppm of the organic peroxide.10. A system for online production of an organic peroxide comprising:a mixing tank;a peroxide supply in fluid communication with the mixing tank and configured to supply a peroxide solution to the mixing tank;an organic supply in fluid communication with the mixing tank ...

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Номер записи: 14
09-01-2020 дата публикации

Decomposition mediation in chlorine dioxide generation systems through sound detection and control

Номер: US20200010319A1
Автор: David R. Papanek, Emily Rader, Kun Xiong, Nicholas Ryan DENNY, Shawn DALKE, Stephen Joseph Hinterlong
Принадлежит: ECOLAB USA INC

A method of controlling a chemical reaction is disclosed. The method may include feeding a solution at a first flow rate into a reactor and detecting a sound in the reactor using a sound sensor that is adjacent to the reactor. The sound sensor may convert the sound into a sound signal. After the sound signal is acquired, it is compared to a stored sound signal or a stored sound threshold to detect a reaction event. The method may include adjusting the flow rate of solutions into the reactor in response to the reaction event.

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Номер записи: 15
09-01-2020 дата публикации

Polyolefin production with chromium-based catalysts

Номер: US20200010590A1
Автор: John H. Moorhouse, Kevin J. Cann, Kevin R. Gross, Mark G. Goode
Принадлежит: Univation Technologies Llc

A system and method for charging a chromium-based catalyst to a mix vessel; introducing a reducing agent through an entrance arrangement into the mix vessel, and agitating a mixture of the chromium-based catalyst, the reducing agent, and a solvent in the mix vessel to promote contact of the reducing agent with the chromium-based catalyst to give a reduced chromium-based catalyst.

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Номер записи: 16
09-01-2020 дата публикации

Steam Saving Device

Номер: US20200011011A1
Автор: Björn Hühnlein, Konstanze Graser, Ralf Hortsch, Thomas Hoppe
Принадлежит: CLARIANT INTERNATIONAL LTD

The steam saving device for a steam explosion system for the hydrothermal pre-treatment of biomass comprises a tubular body 30 with a first open end 32 and a second open end 34 . The first open end 32 being adapted to be coupled to an outlet opening 14 of a steam explosion reactor vessel 10 , the second open end 34 being adapted to be coupled to a discharge line 18 . The inner surface 36 of the tubular body 30 of the nozzle 16 may comprise an engraved helical structure 38.

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Номер записи: 17
22-01-2015 дата публикации

Ozonization continuous reaction device and a working method thereof

Номер: US20150021279A1
Автор: Furong CHEN, Hao Hong, Jian Tao
Принадлежит: Individual

The invention discloses an ozonization continuous reaction device, comprising a raw material inlet, a raw material distributing device, one or plurality of single reaction tubes, a product outlet and an air vent. The first end of the raw material distributing device is communicated with the raw material inlet; the first end of one or plurality of single reaction tubes is communicated with the second end of the raw material distributing device; the product outlet is communicated with the second end of the single reaction tube; ozone is conveyed to the single reaction tube via the air vent. The ozonization continuous reaction device provided by the invention realizes the large-scale and continuous production of the ozonization reaction on the basis of guaranteeing security; as the single reaction tube is arranged, the ozone amount and the liquid raw material existing in the single reaction tube in unit time become fewer, the reaction security is greatly improved; in addition, the liquid raw material and the ozone are continuously fed into the reaction device, the exhaust gas and the products are continuously discharged from the reaction device, the accumulation of the ozone is prevented, the security is greatly guaranteed, and the production capacity also can be improved to a higher level.

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Номер записи: 18
24-01-2019 дата публикации

DEVICE FOR POWDER METERING FOR CHEMICAL PRODUCTION PROCESSES UNDER CLEAN-ROOM CONDITIONS, USE THEREOF AND METERED ADDITION METHOD

Номер: US20190025107A1
Автор: Popova Irene, Rueckl Christian, Stahl Juerg
Принадлежит:

Device for metering powder, in particular in clean-rooms, which includes a vessel containing powder and a sealing head with a septum for the vessel, wherein the sealing head is connectable powder-tight with the vessel and the septum powder-tight with the sealing head and the device further includes a vessel holder, which serves to hold the sealing head of the vessel, and the vessel with its opening points downwards, so that the powder can flow out of the vessel, wherein a gap is provided between the sealing head and a holding bowl of the vessel holder, in which a gas flow between the holding bowl and the sealing head can be created. The invention also relates to a use of the device and a metered addition method. 1. A device for metering powder , which comprises a vessel containing powder and a sealing head with a septum for the vessel , wherein the sealing head is connectable powder-tight with the vessel and the septum with the sealing head , and the device further comprises a vessel holder , which serves to hold the sealing head of the vessel , and the vessel with its opening points downwards , so that the powder can flow out of the vessel , wherein a gap is present between the sealing head and a holding bowl of the vessel holder , in which a gas flow between the holding bowl and the sealing head can be created.2. The device according to claim 1 , wherein the cross-section of the gap between the holding bowl and the sealing head decreases in the direction of the septum claim 1 , so that the flow rate of the gas increases in the direction of the septum.3. The device according to one of claim 1 , wherein the gap between the holding bowl and the sealing head is shaped such that the flow rate is maximal on the septum and the flow is guided against the septum in order to remove powder particles from the septum and the sealing head.4. The device according to claim 1 , wherein the sealing head has a septum adapter and a septum cap with an opening claim 1 , wherein the ...

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Номер записи: 19
24-01-2019 дата публикации

Methods for Determining Transition Metal Compound Concentrations in Multicomponent Liquid Systems

Номер: US20190025200A1
Автор: QING Yang, Richard M. Buck
Принадлежит: Chevron Phillips Chemical Co LP

Methods for determining the concentration of transition metal compounds in a solution containing more than one transition metal compound are described. Polymerization reactor systems providing real-time monitoring and control of the concentrations of the transition metal components of a multicomponent catalyst system are disclosed, as well as methods for operating such polymerization reactor systems and for improving methods of preparing the multicomponent catalyst system.

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Номер записи: 20
17-02-2022 дата публикации

CONTINUOUS SOLID-STATE POLYMERIZATION PROCESS AND REACTOR COLUMN FOR USE THEREIN

Номер: US20220049055A1
Автор: GROLMAN Eric
Принадлежит:

The invention relates to a continuous solid-state polymerization process for preparing a polyamide derived from diamine and dicarboxylic acid, wherein the salt is polymerized in a reactor column comprising successive multifunctional zones comprising heating sections and gas-outlet sections, wherein the heating sections comprise static heat exchangers. The invention also relates to the reactor column and use thereof in a continuous solid-state polymerization process. 1. A continuous solid-state polymerization process for preparing a polyamide derived from diamine and dicarboxylic acid , the process comprising steps offeeding solid diammoniumdicarboxylate salt into a reactor column comprising successive multifunctional zones comprising heating sections and gas-outlet sections; heating the salt, respectively the polymerizing mixture and polyamide, in the heating sections, thereby polycondensing the salt to form a polymerizing mixture, respectively further polycondensing the polymerizing mixture to form a polyamide, and optionally further polycondensing the polyamide to form a polyamide with higher molecular weight, and producing water vapor, and', 'removing the water vapor via gas-outlet sections; and, 'transporting the salt, or where applicable a polymerizing mixture or a polyamide resulting thereof, as a moving packed bed through the successive multifunctional zones, while'}discharging the resulting polyamide from the reactor column;wherein the salt, the polymerizing mixture and polyamide are kept in the solid-state and wherein the heating sections comprise static heat exchangers.2. The process according to claim 1 , wherein the solid diammoniumdicarboxylate salt is fed into the reactor column via a charging section and the resulting polyamide is discharged from the reactor column via a discharge section claim 1 , and wherein a purge of inert gas is fed into the charging section claim 1 , or into the discharge section claim 1 , or into both.3. The process according ...

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Номер записи: 21
11-02-2016 дата публикации

Conversion of polymer containing materials to petroleum products

Номер: US20160040073A1
Автор: Benjamin Ralph Coates, Priyanka Bakaya
Принадлежит: Pk Clean Technologies Inc

Systems and methods achieve the conversion of polymer containing material into petroleum products such as hydrocarbon gas, wax, crude oil and diesel. The reactor and its system are designed to subject the polymer containing material to pyrolysis in a way that results in a higher petroleum product yield than conventional existing systems. The system has controls which allow for the heating temperature, rotation of the body, and throughput rate, to be adjusted depending on the reaction time required for the material inside the reactor. The condensing system is able to separate the products into the desired petroleum products by percentage output ranging from wax to crude-like oil to diesel-quality oil.

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Номер записи: 22
24-02-2022 дата публикации

APPARATUS FOR PREPARING OLIGOMER

Номер: US20220055010A1
Автор: HWANG Moon Sub, KIM You Na, LEE Hong Min, LEE Jeong Seok, SONG Jong Hun
Принадлежит:

The present disclosure provides an apparatus for preparing oligomer including: a reactor; a gas-liquid separator; a solvent transfer line; a second transfer line; a first spray nozzle unit; and a second spray nozzle unit. The apparatus is capable of improving stability of the entire process by including a first spray nozzle unit and a second spray nozzle unit in a reactor and thus preventing by-products containing polymer substances such as C20+ from being entrained with a desired product during a reaction. 2. The apparatus for preparing oligomer of claim 1 , wherein the gaseous first discharge stream of the reactor is fed to the gas-liquid separator after passing through a condenser.3. The apparatus for preparing oligomer of claim 1 , wherein the gaseous first discharge stream of the reactor contains an unreacted monomer and a solvent.4. The apparatus for preparing oligomer of claim 1 , wherein the liquid bottom discharge stream of the gas-liquid separator contains a solvent.5. The apparatus for preparing oligomer of claim 1 , wherein a flow rate of the solvent stream separated through the second transfer line to a total flow rate of the solvent stream fed through the solvent transfer line is 0.01 to 0.2.6. The apparatus for preparing oligomer of claim 1 , wherein each of the n spray nozzles formed in the first spray nozzle unit are formed to be spaced apart from each other at predetermined intervals claim 1 , and{'sup': 'th', 'each of the n−1 spray nozzles formed in the second spray nozzle unit is formed in a region between lines vertical to positions at which the nth and (n−1)spray nozzles of the first spray nozzle unit are formed.'}7. The apparatus for preparing oligomer of claim 1 , wherein n is an integer of 2 to 20.8. The apparatus for preparing oligomer of claim 1 , wherein a spray angle of the liquid bottom discharge stream of the gas-liquid separator sprayed from the spray nozzles formed in the first spray nozzle unit is different from a spray angle of the ...

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Номер записи: 23
18-02-2021 дата публикации

HYDROGEN GENERATOR AND A METHOD FOR GENERATING HYDROGEN

Номер: US20210050608A1
Автор: Li Aidan, Wankewycz Taras, Zhang Xiaohu
Принадлежит:

A hydrogen generator can include, in some aspects, a reaction chamber configured to contain a reagent; a supply water tank; water conduit tubing provided inside the reaction chamber, the water conduit tubing including a water conduit tubing inlet being fluidically connected to the supply water tank and a water conduit tubing outlet; a water dispenser provided inside the reaction chamber, the water dispenser including a water dispenser inlet being fluidically connected to the water conduit tubing outlet and a surface with a plurality of water outlet channels; a water pump; an electric power supply; a controller adapted to activate the water pump for transferring water through the hydrogen generator for interacting with the reagent in the reaction chamber to generate hydrogen gas, and a hydrogen collector provided inside the reaction chamber, the hydrogen collector including a surface with a plurality of gas inlet channels for receiving the hydrogen gas. 1. A hydrogen generator comprising:a reaction chamber configured to contain a reagent,a supply water tank,a water conduit tubing provided inside the reaction chamber, the water conduit tubing comprising a water conduit tubing inlet being fluidically connected to the supply water tank and a water conduit tubing outlet,a water dispenser provided inside the reaction chamber, the water dispenser comprising a water dispenser inlet being fluidically connected to the water conduit tubing outlet and a surface with a plurality of water outlet channels,a water pump,an electric power supply,a controller adapted to activate the water pump for transferring water from the supply water tank, to the water conduit tubing, to the water dispenser, and to the reaction chamber for interacting with the reagent in the reaction chamber to generate hydrogen gas, anda hydrogen collector provided inside the reaction chamber, the hydrogen collector comprising a surface with a plurality of gas inlet channels for receiving the hydrogen gas.2. The ...

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Номер записи: 24
03-03-2022 дата публикации

PLASTIC CONVERSION FEED SYSTEM

Номер: US20220065535A1
Автор: EVERIDGE Cassten, GENCER Mehmet A., PETERSON Richard K., SCHABEL Jay, Schwarz Richard A., STREKAL George W., STRONG Laura Christine
Принадлежит:

A plastic conversion feeding system serves to transport a feedstock through different processing units or stations to a vessel wherein chemical and/or physical reactions occur to produce suitable, useful end products. Various processing units include a homogenizer for breaking up said feedstock, a size reduction device for reducing the feedstock to particles and densifying the same, a heating and/or blending device for heating said feedstock, and a feed conduit connecting said heating and blending device to said vessel. The feedstock conversion unit vessel through various cracking, reforming, condensation, recombination, and recracking operations, produces a mixture of useful gases and condensable gases.

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Номер записи: 25
22-02-2018 дата публикации

Non-Contact Reactor And Nanocrystal Fabrication System Having The Same

Номер: US20180050316A1
Автор: CHEN Hsueh-Shih, HO SHIH-JUNG, YEH Chang-Wei
Принадлежит:

The present invention mainly provides a non-contact reactor consisting of: a reaction vessel having a particularly-designed size, a plurality of injection modules, an agitator, a heat exchange module, and an electrical gate valve module. When this non-contact reactor is operated to produce, operators are able to inject at least one precursor solution into the reaction nanometer-scale semiconductor crystallites vessel and make the injected precursor solution reach a specific position in the reaction vessel by using the electrical gate valve to control the injection pressure of the injection modules. Moreover, the operators can further properly control the rotation speed of the agitator through a controller, so as to evenly and quickly mix the injected precursor solution and a specific solution pre-filled into the reaction vessel to a mixture solution; therefore, the acceleration of production rate and the enhance of production yield of the semiconductor nanocrystals are carried out. 1. A non-contact reactor , comprising:a reaction vessel, being provided with a reaction space therein;a plurality of inject modules, being disposed over the reaction vessel, wherein each of the inject modules have an injection nozzle located over the liquid level of a solution pre-filled into the reaction space;an agitator, being electrically connected to an external driving and controlling device, and having at least one stirring paddles located in the reaction space;a heat exchanging module, being connected to the outer wall of the reaction vessel, and comprising a heat exchanging channel, a fluid inlet communicating with the heat exchanging channel and a fluid outlet communicating with the heat exchanging channel; wherein a fluid with a specific temperature can be inputted into the heat exchanging channel via the fluid outlet, and then the fluid would be outputted via the fluid outlet after a heat exchanging process is carried out between the fluid and the reaction vessel in the heat ...

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Номер записи: 26
25-02-2021 дата публикации

POLYOLEFIN PRODUCTION WITH CHROMIUM-BASED CATALYSTS

Номер: US20210054123A1
Автор: Cann Kevin J., Goode Mark G., Gross Kevin R., Moorhouse John H.
Принадлежит: UNIVATION TECHNOLOGIES, LLC

A system and method for charging a chromium-based catalyst to a mix vessel; introducing a reducing agent through an entrance arrangement into the mix vessel, and agitating a mixture of the chromium-based catalyst, the reducing agent, and a solvent in the mix vessel to promote contact of the reducing agent with the chromium-based catalyst to give a reduced chromium-based catalyst. 124.-. (canceled)25. A method of treating a chromium-based catalyst for polyolefin production , the method comprising:adding a charge of chromium-based catalyst to a mix vessel;introducing a reducing agent into the mix vessel through a conduit extension that extends at least 0.5 inch into the mix vessel and terminates in a designated vapor space of the mix vessel; andagitating a mixture of the chromium-based catalyst, reducing agent, and a solvent in the mix vessel to disperse the reducing agent in the mixture to promote reaction of the reducing agent with the chromium-based catalyst to give a reduced chromium-based catalyst.26. The method of claim 25 , wherein the conduit extension is an insert through a nozzle of the mix vessel.27. The method of claim 25 , wherein the conduit extension directs the reducing agent toward a surface of the mixture level in the mix vessel.28. The method of claim 25 , wherein the conduit extension directs the reducing agent toward a location of the mixture level in a range of 20% to 80% of a perpendicular distance from a vertical centerline of the mix vessel to an inside surface of a wall of the mix vessel.29. The method of claim 25 , wherein the chromium-based catalyst comprises an activated chromium-based catalyst on an unmilled support claim 25 , and wherein the reducing agent comprises an organoaluminum compound.30. The method of claim 25 , comprising polymerizing an olefin into a polyolefin in presence of the reduced chromium-based catalyst in a polymerization reactor.31. The method of claim 25 , wherein the chromium-based catalyst comprises an inorganic ...

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Номер записи: 27
10-03-2022 дата публикации

FLUID DELIVERY APPARATUS AND METHOD FOR MODIFYING FLUID DELIVERY APPARATUS

Номер: US20220072494A1
Автор: Kagawa Seiji, Kanno Shoichi, TAKEUCHI Yasuhiro, Tanaka Yoshito
Принадлежит: MITSUBISHI POWER, LTD.

A fluid delivery apparatus to deliver a slurry liquid to be brought into contact with exhaust gas discharged from a combustion device to a plurality of delivery destinations comprises: a first delivery line for delivering the slurry liquid from a delivery source to a first delivery destination; a return line, branching off from the first delivery line at a first bifurcation part, for returning the slurry liquid to the delivery source; a second delivery line, branching off from the return line at a second bifurcation part, for delivering the slurry liquid to a second delivery destination different from the first delivery destination; and a delivery destination switching device configured to able to switch a delivery destination of the slurry liquid flowing on an upstream side of the second bifurcation part in the return line to a downstream side of the second bifurcation part in the return line. 1. A fluid delivery apparatus configured to deliver a slurry liquid to be brought into contact with exhaust gas discharged from a combustion device to a plurality of delivery destinations , comprising:a first delivery line for delivering the slurry liquid from a delivery source to a first delivery destination;a return line, branching off from the first delivery line at a first bifurcation part, for returning the slurry liquid to the delivery source;a second delivery line, branching off from the return line at a second bifurcation part, for delivering the slurry liquid to a second delivery destination different from the first delivery destination; anda delivery destination switching device configured to able to switch a delivery destination of the slurry liquid flowing on an upstream side of the second bifurcation part in the return line to a downstream side of the second bifurcation part in the return line or to the second delivery line.2. The fluid delivery apparatus according to claim 1 , further comprising a washing line configured to deliver a washing liquid to the second ...

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Номер записи: 28
04-03-2021 дата публикации

GAS/LIQUID SEPARATION COLUMN CONTAINING A DISPENSING DEVICE

Номер: US20210060453A1
Автор: Davidian Benoit, WATTIAU Mikael
Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

Gas/liquid separation column, containing a device for dispensing a liquid, intended for a gas/liquid separation column, comprising: a plate, in which several orifices are arranged, through which the liquid is able to leave the dispensing device; a plurality of stacks extending from the plate, each stack being configured to be followed by the gas; a plurality of plugging means respectively arranged at one end of one of the stacks, each plugging means having a gutter shape allowing a first portion of the liquid to be collected; a plurality of troughs for directly collecting a second portion of the liquid, at least one part of the orifices being distributed in the base of said troughs, each plugging means comprising a first open longitudinal end and a second closed longitudinal end. 1. Gas/liquid separation column , comprising a liquid dispensing device and a gas/liquid contact component , adapted so that a fluid flows in a first liquid circulation direction through the device upstream of the gas/liquid contact component , the dispensing device comprising:a plurality of stacks extending from a lower plate along a vertical axis perpendicular to a first plane, each stack being configured to be followed by the gas in a second circulation direction opposite the first direction, the stacks being disposed above cutouts in the lower plate, at least one opening being laterally provided in a wall demarcating the stack in the vicinity of a vertical end of the stack and of the plugging means that plug this vertical end;a plurality of plugging means, respectively arranged at an upper vertical end of one of the stacks and over the entire longitudinal dimension of said stack, each plugging means having a gutter shape allowing direct collection of a first portion of the liquid that is conveyed through the dispensing device, the plugging means each having a first open longitudinal end and a second closed longitudinal end, so as to force liquid to exit the gutter via the first open ...

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Номер записи: 29
05-03-2015 дата публикации

External steam reduction method in a fluidized catalytic cracker

Номер: US20150065759A1
Автор: Barry A. Freel, Robert G. Graham
Принадлежит: Ensyn Renewables Inc

The present disclosure generally relates to methods to reduce the external steam supplied to a fluidized catalytic cracker by injecting a stream comprising a water-containing renewable fuel oil into a riser of a fluidized catalytic cracker.

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Номер записи: 30
05-03-2015 дата публикации

Fluidized catalytic cracker riser quench system

Номер: US20150065760A1
Автор: Barry A. Freel, Robert G. Graham
Принадлежит: Ensyn Renewables Inc

The present application generally relates to a riser quench system comprising a quench line and one or more quench injecting ports for injecting a renewable fuel oil into the riser of a fluidized catalytic cracker co-processing a renewable fuel oil and a petroleum fraction as reactants.

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Номер записи: 31
08-03-2018 дата публикации

DIESEL OXIDATION CATALYST WITH NOX ADSORBER ACTIVITY

Номер: US20180065086A1
Автор: "OBrien Matthew", Bidal Yannick, CHIFFEY Andrew, Moreau François
Принадлежит:

An oxidation catalyst for treating an exhaust gas from a diesel engine and an exhaust system comprising the oxidation catalyst are described. The oxidation catalyst comprises: a first region for adsorbing NO, wherein the first region comprises a molecular sieve catalyst, wherein the molecular sieve catalyst comprises a noble metal and a molecular sieve; a second region for oxidising carbon monoxide (CO) and/or hydrocarbons (HCs), wherein the second region comprises palladium (Pd), gold (Au) and a support material; and a substrate having an inlet end and an outlet end. 1. An oxidation catalyst for treating an exhaust gas from a diesel engine , which oxidation catalyst comprises:{'sub': 'x', 'a first region for adsorbing NO, wherein the first region comprises a molecular sieve catalyst, wherein the molecular sieve catalyst comprises a noble metal and a molecular sieve;'}a second region for oxidising carbon monoxide (CO) and/or hydrocarbons (HCs), wherein the second region comprises palladium (Pd), gold (Au) and a support material; anda substrate having an inlet end and an outlet end.2. An oxidation catalyst according to claim 1 , wherein the noble metal comprises palladium.3. An oxidation catalyst according to claim 1 , wherein the molecular sieve is selected from a small pore molecular sieve claim 1 , a medium pore molecular sieve and a large pore molecular sieve.4. An oxidation catalyst according to claim 1 , wherein the molecular sieve is a small pore molecular sieve having a Framework Type selected from the group consisting of ACO claim 1 , AEI claim 1 , AEN claim 1 , AFN claim 1 , AFT claim 1 , AFX claim 1 , ANA claim 1 , APC claim 1 , APD claim 1 , ATT claim 1 , CDO claim 1 , CHA claim 1 , DDR claim 1 , DFT claim 1 , EAB claim 1 , EDI claim 1 , EPI claim 1 , ERI claim 1 , GIS claim 1 , GOO claim 1 , IHW claim 1 , ITE claim 1 , ITW claim 1 , LEV claim 1 , KFI claim 1 , MER claim 1 , MON claim 1 , NSI claim 1 , OWE claim 1 , PAU claim 1 , PHI claim 1 , RHO claim 1 ...

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Номер записи: 32
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: 33
22-03-2018 дата публикации

Method and device for the hydrolysis of liquid, organic substrates

Номер: US20180079656A1
Автор: Dünnebeil Andreas
Принадлежит:

In a method for the hydrolysis of liquid, organic substrates (), the substrate to be hydrolysed is introduced into a circulation loop for heating, where an equal amount of hydrolysed substrate () is displaced from the circulation loop (). An appropriate system can have a circulation loop, a feed device, a circulation pump for generating a circulation flow in the circulation loop, and a heater for heating and reheating the circulation flow. 1. Method for a hydrolysis of liquid , organic substrates , wherein a substrate to be hydrolysed is introduced into a circulation loop for heating and wherein an equal amount of hydrolysed substrate is displaced from said circulation loop.2. Method according to claim 1 , wherein said introduced substrate is mixed with a chemical in order to change its pH value to increase an effect of said hydrolysis.3. Method according to claim 2 , wherein said introduced substrate is mixed with caustic solution in order to increase said pH value claim 2 , to increase an effect of said hydrolysis claim 2 , and to at least partially re-neutralize said caustic solution by means of organic acids released in said process.4. Method according to claim 1 , wherein a dwell time of said substrate in said circulation loop is increased by an additional volume in said circulation.5. Method according to claim 4 , wherein a volume flow of said circulation and a volume flow of a discharging substrate leave a volume in said circulation through different outlets.6. Method according to claim 4 , wherein said additional volume is formed by internal fittings so as to avoid a complete mixing claim 4 , where said discharging substrate has a different dwell time compared with a circulation flow.7. Method according to claim 6 , wherein said dwell time of said discharging volume flow of said substrate is greater than said dwell time of said circulation flow.8. Method according to claim 1 , wherein said substrate is fed into a circulation flow upstream of a heater.9. ...

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Номер записи: 34
22-03-2018 дата публикации

HYDROCARBON-IN-WATER PURIFICATION ANION-EXCHANGE SYSTEM

Номер: US20180079971A1
Автор: Block Joseph M., Dallas Andrew J., Hall Cullen E., Hauser Bradly G., Moravec Davis B.
Принадлежит:

A hydrocarbon-in-water purification system includes an anion exchange stage having an anion exchange resin and an inlet and a water permeate outlet and a hydrocarbon outlet. The inlet is in fluid communication with a hydrocarbon-in-water emulsion source. 1. A hydrocarbon-in-water purification system , comprising:an anion exchange stage comprising an anion exchange resin and an inlet and a water permeate outlet and a hydrocarbon outlet, the inlet is in fluid communication with a hydrocarbon-in-water emulsion source.2. The system according to wherein the anion exchange resin comprises a strongly basic anion exchange resin.3. The system according to wherein the hydrocarbon-in-water emulsion comprises an anionic surfactant.4. The system according to wherein the hydrocarbon-in-water emulsion comprises hydrocarbon droplets having an average diameter of 5 micrometers or greater.5. The system according to wherein the hydrocarbon-in-water emulsion comprises fuel.6. The system according to wherein the hydrocarbon-in-water emulsion comprises diesel.7. The system according to wherein the hydrocarbon-in-water emulsion comprises biodiesel.8. The system according to wherein the hydrocarbon-in-water source is a fuel system.9. The system according to wherein the hydrocarbon-in-water source is a compressor.10. The system according to further comprising a hydrocarbon absorber stage in liquid communication with the water permeate outlet and downstream of the anion exchange stage claim 1 , the hydrocarbon absorber stage comprising activated carbon.11. The system according to claim 10 , wherein the hydrocarbon absorber stage comprises a polishing absorber stage downstream of a high capacity absorber stage.12. An engine fuel and water separation system comprising:a fuel and water separator system fluidly connected to an engine fuel line and having a water drain outlet; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the inlet of the hydrocarbon-in-water purification system, ...

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Номер записи: 35
22-03-2018 дата публикации

HYDROCARBON-IN-WATER PURIFICATION SYSTEM

Номер: US20180079972A1
Автор: Block Joseph M., Dallas Andrew J., Hall Cullen E., Hauser Bradly G., Madsen Mike J., Moravec Davis B., Shepherd Mark C.
Принадлежит:

A hydrocarbon-in-water purification system includes a high capacity hydrocarbon absorber stage having a high capacity hydrocarbon absorber material and an inlet configured to receive a hydrocarbon-in-water dispersion from a fuel system. A polishing hydrocarbon absorber stage is in liquid communication and downstream of the high capacity hydrocarbon absorber stage including polishing activated carbon. The high capacity hydrocarbon absorber material has a greater saturation capacity than the polishing activated carbon and the polishing activated carbon has a greater polishing capacity than the high capacity hydrocarbon absorber material. A method for controlling and managing the evacuation of water from the hydrocarbon-in-water purification system includes tracking the purification state of water volumes and the bed loading states of purification beds defined in the water filter. 1. A hydrocarbon-in-water purification system , comprising:a high capacity hydrocarbon absorber stage comprising a high capacity hydrocarbon absorber material and an inlet configured to receive a hydrocarbon-in-water dispersion from a fuel system; anda polishing hydrocarbon absorber stage in liquid communication and downstream of the high capacity hydrocarbon absorber stage, the polishing hydrocarbon absorber stage comprising polishing activated carbon;the high capacity hydrocarbon absorber material has a greater saturation capacity than the polishing activated carbon and the polishing activated carbon having a greater polishing capacity than the high capacity hydrocarbon absorber material.2. The system according to wherein claim 1 , the high capacity hydrocarbon absorber stage and the polishing hydrocarbon absorber stage are contained within a filter housing.3. The system according to claim 1 , wherein the high capacity hydrocarbon absorber material comprises activated carbon.4. The system according to claim 1 , wherein the high capacity hydrocarbon absorber material comprises polyethylene ...

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Номер записи: 36
26-03-2015 дата публикации

SYSTEM AND METHOD FOR DETERRING FOULING IN A POLYMERIZATION REACTOR

Номер: US20150087793A1
Автор: Lief Graham R., MASINO Albert P., MCDANIEL Max P., Muninger Randall S., Schwerdtfeger Eric D., YANG Qing
Принадлежит:

A catalyst composition may include a precontacted mixture of an olefin polymerization catalyst and an agent including an ammonium salt. The catalyst activity of the catalyst composition in the presence of water may be greater than if no ammonium salt were present in the catalyst composition. The ammonium salt may include a tetraalkylammonium salt, and the olefin polymerization catalyst may include a metallocene compound. 1. A method , comprising:introducing a catalyst composition formed within a precontactor into a polymerization zone of a polymerization reactor; andpolymerizing, within the polymerization zone, an olefin monomer using the catalyst composition to produce a polyolefin polymer; and an olefin polymerization catalyst; and', 'an agent comprising an ammonium salt, wherein the catalyst composition has a greater catalyst activity in the presence of water than if no ammonium salt were present., 'wherein the catalyst composition formed within the precontactor comprises a contact product of contact components comprising2. The method of claim 1 , wherein the olefin polymerization catalyst comprises a metallocene catalyst.3. The method of claim 1 , wherein the ammonium salt has the formula:{'br': None, 'sup': 1', '2', '3', '4, '(R)(R)(R)(R)N(X), whereinN is Nitrogen{'sup': 1', '2', '3', '4, 'R, R, R, and Rare independently selected from a hydrogen, an alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 1 to 20 carbons; and'}X is an anion.4. The method of claim 1 , wherein the ammonium salt is a tetraalkylammonium salt claim 1 , each alkyl having claim 1 , independently claim 1 , from 1 to 20 carbons.5. The method of claim 1 , wherein the ammonium salt is a tetraalkylammonium halide salt claim 1 , each alkyl having claim 1 , independently claim 1 , from 4 to 12 carbons.6. The method of claim 1 , wherein the ammonium salt is tetrabutylammonium chloride or tetradodecylammonium chloride.7. The method of claim 1 , wherein the ammonium salt is an ...

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Номер записи: 37
26-04-2018 дата публикации

PROCESS FOR THE OXIDATION OF STARCH-BASED MATERIALS

Номер: US20180112012A1
Автор: Vezzani Massimo
Принадлежит: Ambiente E Nutrizione S.R.L.

A process for the oxidation of powder materials containing starch, which comprises the successive steps of mixing a powder material comprising starch with an aqueous solution of hydrogen peroxide (HO) and adding to the mixture thus obtained an aqueous solution of ammonia and reacting it with said mixture; the process may also comprise a further step of drying the aforementioned mixture to obtain a powder material containing oxidized starch; the process may advantageously comprise the steps of:—feeding a continuous flow of powder material containing starch into a first reactor (R) comprising a cylindrical tubular body () and a rotor, arranged in the cylindrical tubular body, comprising a shaft () provided with elements () projecting radially therefrom and rotated at a speed greater than or equal to 50 rpm,—feeding into said reactor also a continuous flow of an aqueous solution of hydrogen peroxide—reacting the powder material containing starch and the hydrogen peroxide;—discharging from a discharge opening () of the first reactor a continuous flow of a wet powder and feeding this continuous flow into a second reactor (R′) comprising a cylindrical tubular body () and a rotor, arranged in the cylindrical tubular body, comprising a shaft () provided with elements () projecting radially therefrom and rotated at a speed greater than or equal to 50 rpm;—feeding into the second reactor (R′) also a continuous flow of an aqueous solution of ammonia,—discharging from a discharge opening () of the second reactor a continuous flow of a wet powder comprising oxidized starch;—drying the wet powder to a moisture content less than or equal to 20% by weight, thereby obtaining a powder material containing oxidized starch. 1. A process for the oxidation of powder materials containing starch , which is carried out in the absence of any metal compounds and which comprises the successive steps of:a) providing a powder material comprising starch;{'sub': 2', '2, 'b) mixing said material ...

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Номер записи: 38
13-05-2021 дата публикации

Gas Processing Device and Method

Номер: US20210138428A1
Автор: Norris Francisco, Norris Patricio
Принадлежит:

A methane conversion device comprises a reaction chamber; a sensor for detecting the presence of methane; blowing means for directing external gasses Into the reaction chamber when the sensor detects the presence of methane above a predetermined threshold; conversion means that are configured to oxidise methane; and positioning means for positioning the device on an animal. 1. A methane conversion device comprising:a reaction chamber comprising conversion means that are configured to oxidise methane;a methane retention component;means for causing methane to be released from the methane retention component into the reaction chamber;a sensor that is adapted to detect the presence of methane within gas exterior to the methane conversion device;blowing means configured to drive gas from the exterior of the device onto the methane retention component when the sensor detects the presence of methane above a predetermined threshold; andpositioning means for positioning the device on an animal.2. A device according to claim 1 , wherein the methane retention component comprises a chamber containing a porous material that is configured to reversibly absorb methane.3. A device according to claim 2 , wherein the porous material is provided by a zeolite mineral.4. A device according to any one of the preceding claims claim 2 , wherein a carbon dioxide filter is provided between the blowing means and the methane retention component claim 2 , the carbon dioxide filter being configured to inhibit the passage of carbon dioxide to the methane retention component.5. A device according to any one of the preceding claims claim 2 , wherein the means for causing methane to be released from the methane retention component into the reaction chamber comprises a heating element.6. A methane conversion device comprising:A reaction chamber;A sensor that is adapted to detect the presence of methane within gas exterior to the methane conversion device;Blowing means configured to drive gas from the ...

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Номер записи: 39
18-04-2019 дата публикации

MULTITUBULAR REACTOR FOR LIQUID PHASE ALCOHOL DEHYDROGENATION AND METHOD FOR LIQUID PHASE ALCOHOL DEHYDROGENATION

Номер: US20190112249A1
Автор: Chen Jingjing, Wu Dan, Wu Naixin, Zhao Suying, ZHENG Huidong
Принадлежит: FUZHOU UNIVERSITY

The invention relates to a multitubular reactor for dehydrogenation of liquid phase alcohol dehydrogenation and a method of liquid phase alcohol dehydrogenation. Most of the alcohol dehydrogenation reaction is endothermic reaction, the reaction temperature is high and the equilibrium conversion rate is low. 110-. (canceled)11. A multitubular reactor for liquid phase alcohol dehydrogenation , comprising:a reactor shell;a plurality of tubes spaced within the reactor shell, wherein the tubes are made of a gas selectively permeable membrane, which is permeable to hydrogen and oxygen but impermeable to liquid molecules, and wherein one end of the tubes is a liquid phase alcohol inlet, and another end of the tubes is a dehydrogenation product outlet;a dehydrogenation catalyst being provided inside the tubes;an oxidation catalyst being provided outside the tubes and in the reactor shell;at least one oxygen membrane tube disposed in the reactor shell, wherein one end of the oxygen membrane tube is an oxygen inlet, and another end of the oxygen membrane tube is closed; andan oxidation product outlet disposed on the reactor shell.12. The multitubular reactor for liquid phase alcohol dehydrogenation of claim 11 , wherein the gas selectively permeable membrane is made of a molecular sieve claim 11 , silica claim 11 , carbon claim 11 , ceramics claim 11 , porous stainless steel or a composite formed by two or more thereof.13. The multitubular reactor for liquid phase alcohol dehydrogenation of claim 11 , wherein the dehydrogenation catalyst is filled in the form of particles within the tubes claim 11 , and the dehydrogenation catalyst comprises:a supported noble metal and a support thereof, wherein the noble metal is Pd, Pt, Ru or Au, and the support is a metal oxide, a molecular sieve, a carbon material or an organic polymer; anda non-noble metal, wherein the non-noble metal is Cu, Zn, Mn, Ni, Co, Cr or V.14. The multitubular reactor for liquid phase alcohol dehydrogenation of ...

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Номер записи: 40
25-08-2022 дата публикации

Reactor for the hydrothermal treatment of biomass

Номер: US20220267687A1
Автор: PELS Jan Remmert, Van Der Meijden Christiaan Martinus
Принадлежит: Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNO

The present invention concerns a reactor and a process for the hydrothermal treatment of an aqueous mixture, such as watery biomass. The reactor according to the invention comprises () an inlet for receiving the aqueous mixture, () a tube-shaped reactor interior, which is inclined at an angle in the range of 1-45°; () a first zone in the reactor interior () comprising means () for heating the aqueous mixture; () a second zone in the reactor interior () for keeping the aqueous mixture at the predetermined temperature; () a third zone in the reactor interior () for cooling the aqueous mixture; () an outlet for discharging a hydrothermally treated aqueous mixture, and () an outlet for discharging gas, wherein inlet () and outlet () are positioned at the top part of the reactor and outlet () at the bottom part of the reactor. The inclined nature of the reactor ensures that all gases are efficiently removed from the liquid effluent, and the COformed during the process is used to improved efficacy of the hydrothermal treatment. 115-. (canceled)16. A hydrothermal reactor , comprising:an inlet for receiving an aqueous mixture, positioned at the top part of the reactor interior;a tube-shaped reactor interior, which is inclined at an angle in the range of 1-45°;a first zone in the reactor interior comprising means for heating the aqueous mixture to a predetermined temperature;a second zone in the reactor interior for keeping the aqueous mixture at the predetermined temperature;a third zone in the reactor interior for cooling the aqueous mixture;an outlet for discharging a hydrothermally treated aqueous mixture, positioned at the bottom part of the reactor interior; andan outlet for discharging gas, positioned at the top part of the reactor interior.17. The reactor according to claim 16 , wherein the inclination angle of the reactor interior is in the range of 2-15°.18. The reactor according to claim 16 , further comprising an expansion vessel positioned at the top part of ...

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Номер записи: 41
01-09-2022 дата публикации

Process and Apparatus for Production of a Granular Cannabinoid Material Essentially Soluble in Aqueous Medium

Номер: US20220273744A1
Автор: Jacob Michael, Nowak Mirko
Принадлежит:

A process and to an apparatus for production of a granular cannabinoid material essentially soluble in aqueous medium, wherein a matrix liquid composed of a first liquid that dissolves a cannabinoid or composed of a first liquid that dissolves a cannabinoid and a second liquid that forms an emulsion with the first liquid and a cannabinoid dissolved in the first liquid or emulsion is produced. The matrix liquid is dried by convection, and wherein the apparatus has a vessel system having an inlet and a matrix liquid outlet for production of the matrix liquid and a drying apparatus fluidically connected to the matrix liquid outlet of the vessel system. 1. A method for manufacturing a cannabinoid granulate which is essentially soluble in an aqueous environment , wherein a matrix liquid is manufactured from a first liquid which dissolves a cannabinoid or from a first liquid which dissolves a cannabinoid and a second fluid which with the first liquid forms an emulsion and from a cannabinoid which is dissolved in the first liquid or in the emulsion , wherein the matrix liquid is convectively dried.2. The method according to claim 1 , wherein the matrix liquid is spray dried or is convectively dried in a fluidisation apparatus by way of spray granulation claim 1 , spray agglomeration or spray encapsulation claim 1 , into a cannabinoid granulate.3. The method according to claim 1 , wherein firstly a cannabinoid is dissolved in a first liquid and the first liquid subsequently mixed with the second liquid for forming the emulsion.4. The method according to claim 1 , wherein the first liquid is firstly mixed with the second liquid for forming the emulsion and a cannabinoid is subsequently dissolved in the emulsion.5. The method according to claim 1 , wherein the first liquid consists of the group of lipids claim 1 , alcohols claim 1 , oils and/or an arbitrary mixture of these.6. The method according to claim 1 , wherein the second liquid is an aqueous solution or water.7. The ...

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Номер записи: 42
01-09-2022 дата публикации

REVERSE FLOW REACTOR WITH RECUPERATIVE REVERSE-FLOW FEED CYCLE

Номер: US20220274085A1
Автор: Barrai Federico, CHUN ChangMin, Keusenkothen Paul F., Liu Sophie, Weiss Brian M., Young Zachary D.
Принадлежит:

A reverse flow reactor (RFR) and process having a forward reaction feed cycle, a reverse reaction feed cycle, and a reverse regeneration cycle. The heat convected in the forward feed cycle matches the heat convected in the reverse flow cycles. Compared to an RFR without the reverse feed cycle, the three-cycle RPR substantially reduces the regeneration air flow rate, associated compression requirements, and the overall reactor volume, that are required. 1. A reverse flow reaction process , comprising:a forward feed flow cycle comprising heating and reacting a forward flow of a feed through a flow-through reactor member to produce a first reaction product;a reverse feed flow cycle comprising heating and reacting a reverse flow of the feed through the reactor member in a reverse flow direction opposite the forward feed cycle to produce a second reaction product; anda regeneration cycle comprising heating and regenerating the reactor member with a flow of regenerant through the reactor member in the reverse flow direction.2. The reverse flow reaction process of claim 1 , further comprising parallelly orienting a plurality of the reactor members claim 1 , and sequentially alternating ones of the reactor members between a forward reaction set in the forward feed flow cycle claim 1 , a reverse reaction set in the reverse feed flow cycle claim 1 , and a regeneration set in the regeneration cycle.3. The reverse flow reaction process of claim 2 , further comprising:wherein the reactor members comprise first and second opposed apertures adjacent respective first and second ends of a reactor and flow passages through the respective reactor members between the first and second opposed apertures; establishing the forward flow of the feed from a first feed conduit to the first apertures of the forward reaction set of the reactor members;', 'passing the forward flow of the feed through the reactor members in a forward direction to form a first reaction product;', 'establishing a ...

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Номер записи: 43
01-09-2022 дата публикации

CARBON NANOTUBE PRODUCTION DEVICE AND PRODUCTION METHOD

Номер: US20220274836A1
Автор: NAMIKI Katsuya, Noda Suguru, Osawa Toshio, Sugime Hisashi, ZHANG Zihao
Принадлежит:

Provided are a carbon nanotube production device and production method capable of realizing high-temperature heating of a catalyst raw material in a floating catalyst chemical vapor deposition (FCCVD) method, and improving the quality and yield of carbon nanotubes synthesized. A carbon nanotube production device includes a synthesis furnace for synthesizing carbon nanotubes; a catalyst raw material supplying nozzle for supplying a catalyst raw material used to synthesize carbon nanotubes to the synthesis furnace ; and a nozzle temperature adjusting unit capable of setting a temperature of an inner portion of the catalyst raw material supplying nozzle higher than a temperature of a reaction field of the synthesis furnace . By supplying to the synthesis furnace the catalyst raw material that has been thermally decomposed after being heated to a temperate at which a catalyst metal will not yet be condensed, and by having the thermally decomposed catalyst raw material rapidly cooled to a CVD temperature at the synthesis furnace , microscopic catalyst metal particles will be generated at a high density in the space of the reaction field such that carbon nanotubes having a small diameter can be vapor-grown at a high density. 1. A carbon nanotube production device comprising:a synthesis furnace for synthesizing carbon nanotubes;a catalyst raw material supplying nozzle for supplying a catalyst raw material used to synthesize the carbon nanotubes to the synthesis furnace; anda nozzle temperature adjusting unit capable of setting a temperature of an inner portion of the catalyst raw material supplying nozzle higher than a temperature of a reaction field of the synthesis furnace.2. The production device according to claim 1 , wherein the temperature of the inner portion of the catalyst raw material supplying nozzle is a temperature at which the catalyst raw material thermally decomposes to generate a catalyst metal vapor; the temperature of the reaction field of the synthesis ...

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Номер записи: 44
30-04-2020 дата публикации

WITHDRAWAL SYSTEM

Номер: US20200129944A1
Автор: EVANS MARTIN, FISHER Rick
Принадлежит: Johnson Matthey Process Technologies, Inc.

A withdrawal system for withdrawing particulate matter from a high-temperature unit of a high-temperature industrial process is disclosed. The withdrawal system comprises a material storage silo that comprises a vent line containing a first vent valve, one or more temperature sensors to measure temperature of the particulate matter in the material transfer line, and a controller that receives output measurements from the one or more temperature sensors to monitor and control flow of the particulate matter. The system does not contain a receiving vessel located in the material transfer line between the high-temperature unit and the material storage silo. 1. A withdrawal system for withdrawing particulate matter from a high-temperature unit of a high-temperature industrial process , said withdrawal system comprising:(a) a material storage silo that comprises a vent line containing a first vent valve;(b) a material transfer line that connects the high-temperature unit to the material storage silo;(c) one or more temperature sensors to measure temperature of the material transfer line; and(d) a controller that receives output measurements from the one or more temperature sensors to monitor and control flow of the particulate matter,wherein the withdrawal system does not contain a receiving vessel located in the material transfer line between the high-temperature unit and the material storage silo.2. The withdrawal system of claim 1 , further comprising a heat exchanger connected to the material transfer line between the high-temperature unit and the material storage silo.3. The withdrawal system of claim 2 , wherein the heat exchanger comprises:(a) a structure comprising a rectangular frame;(b) piping that is supported by the rectangular frame and completes at least one circumference around the rectangular frame, wherein the piping is supported to the frame on a series of moving supports, and the piping comprises a piping inlet end and a piping outlet end, and the ...

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Номер записи: 45
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: 46
30-04-2020 дата публикации

IMPROVEMENTS IN OR RELATING TO PROPELLANT CONDITIONING ASSEMBLIES

Номер: US20200130875A1
Автор: DOWDLE PAUL ALAN, WATKINSON PAUL ANTHONY
Принадлежит: Mexichem Fluor S.A. de C.V.

In the field of medical dosing device filling, a propellant conditioning assembly () comprises an input conduit () to receive a propellant at a constant pressure from a propellant reservoir (). The conditioning assembly () also includes a bifurcation () to divide the input conduit () into first and second conditioning conduits (). The first conditioning conduit () includes a cooler device () to selectively cool a diverted first propellant stream () that flows through the first conditioning conduit (), and the second conditioning conduit () includes a heater device () to selectively heat a diverted second propellant stream () that flows through the second conditioning conduit (). The conditioning assembly () still further includes an output conduit () to receive the first and second propellant streams (). The relative proportion of the first and second propellant streams () merging in the output conduit () is controlled to regulate the temperature of a merged constant pressure propellant feed () exiting from the output conduit (). 1. A propellant conditioning assembly , for providing a propellant feed to a medical dosing device filling apparatus , the assembly comprising:an input conduit to receive a propellant at a constant pressure from a propellant reservoir;a bifurcation to divide the input conduit into first and second conditioning conduits, the first conditioning conduit including a cooler device to selectively cool a diverted first propellant stream flowing through the first conditioning conduit, and the second conditioning conduit including a heater device to selectively heat a diverted second propellant stream flowing through the second conditioning conduit; andan output conduit to receive the first and second propellant streams, the relative proportion of the first and second propellant streams merging in the output conduit being controlled to regulate the temperature of a merged constant pressure propellant feed exiting from the output conduit,wherein the ...

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Номер записи: 47
16-05-2019 дата публикации

System and Method for Catalyst Preparation

Номер: US20190143287A1
Автор: BENHAM Elizabeth A., GONZALES Rebecca A., MASINO Albert P., Muninger Randy S., YANG Qing
Принадлежит:

Techniques are provided for catalyst preparation. A system for catalyst preparation may include an agitator disposed inside a polymerization catalyst tank and configured to mix a polymerization catalyst and a solvent to generate a polymerization catalyst solution. The system may also include a heating system coupled to the polymerization catalyst tank and configured to maintain a temperature of the polymerization catalyst solution above a threshold. The system may also include a precontactor configured to receive feed streams comprising an activator and the polymerization catalyst solution from the polymerization catalyst tank to generate a catalyst complex. The system may also include a transfer line configured to transfer the catalyst complex from an outlet of the precontactor to a reactor. 120-. (canceled)21. A polymer manufacturing system comprising:(A) a catalyst solution tank configured to contain a metallocene catalyst solution and to supply a precontactor with at least a portion of the metallocene catalyst solution;(B) a precontactor configured to contact the metallocene catalyst solution, an activator, and a co-catalyst to form a catalyst complex;(C) a polymerization reactor system configured to contact the catalyst complex with an olefin monomer and an optional olefin comonomer to produce a polyolefin;(D) an ultraviolet-visible analyzer configured to determine a first concentration of a metallocene catalyst in the metallocene catalyst solution; and(E) a control system configured to control the first concentration of the metallocene catalyst in the metallocene catalyst solution.22. The polymer manufacturing system of claim 21 , wherein the catalyst solution tank contains an agitator configured to mix the metallocene catalyst and a solvent to form the metallocene catalyst solution.23. The polymer manufacturing system of claim 21 , further comprising a heating system coupled to the catalyst solution tank and configured to maintain a temperature of the ...

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Номер записи: 48
07-05-2020 дата публикации

High pressure, free radical polymerizations to produce ethylene-based polymers

Номер: US20200140580A1
Автор: Cornelis J F Hosman, Nhi T. Y. Dang
Принадлежит: Dow Global Technologies LLC

A process to form an ethylene-based polymer in a reactor system, said process comprising at least the following steps: a) injecting a first initiator mixture into the tubular reactor at location L along the reactor, b) injecting a compressed make-up CTA system at the location L1, at a distance (L−L1) from 145*Dprehehater to 1000*Dpreheater, upstream from L, and wherein Dpreheater=the inner diameter of the pre-heater in meter (m); and wherein L1 is located in the preheater, and c) optionally, injecting one or more additional compressed make-up CTA system(s) into the preheater, at one or more location: LiLi+1, Ln (2≤i and 2≤n), upstream from L1, and each location is, independently, at a distance from 145*Dprehehater to 1000*Dpreheater, and wherein n equals the total number of injection locations of the make-up CTA system(s) injected into the preheater, upstream from L1, and wherein (L−L1) is less than each (L−Li), (L−Li+1), (L−Ln); and d) polymerizing a reaction mixture comprising at least ethylene, the first initiator mixture, and the compressed make-up CTA system of step b), and wherein the process has a log coefficient of variation (log(CoV1)), at L1, that meets the relationships described herein.

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Номер записи: 49
21-08-2014 дата публикации

Reactor for preparing precursor of lithium composite transition metal oxide and method for preparing precursor

Номер: US20140234203A1
Автор: ByungChun PARK, Hong Kyu Park, Hosuk Shin, Sangmin Park, Seong Hoon Kang
Принадлежит: LG Chem Ltd

Disclosed is a reactor for preparing a precursor of lithium composite transition metal oxide for lithium secondary batteries, the reactor having a closed structure including a stationary hollow cylinder; a rotary cylinder having the same axis as the stationary hollow cylinder and an outer diameter smaller than an inner diameter of the stationary hollow cylinder, an electric motor to generate power, enabling rotation of the rotary cylinder, a rotation reaction area disposed between the stationary hollow cylinder and the rotary cylinder, wherein ring-shaped vortex pairs that are uniformly arranged in a rotation axis direction and rotate in opposite directions are formed in the rotation reaction area, and an inlet through which a reactant fluid is fed into the rotation reaction area and an outlet through which the reactant fluid is discharged from the rotation reaction area.

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Номер записи: 50
09-06-2016 дата публикации

Reactor for preparing precursor of lithium composite transition metal oxide and method for preparing precursor

Номер: US20160164090A1
Автор: ByungChun PARK, Hong Kyu Park, Hosuk Shin, Sangmin Park, Seong Hoon Kang
Принадлежит: LG Chem Ltd

Disclosed is a reactor for preparing a precursor of lithium composite transition metal oxide for lithium secondary batteries, the reactor having a closed structure including a stationary hollow cylinder; a rotary cylinder having the same axis as the stationary hollow cylinder and an outer diameter smaller than an inner diameter of the stationary hollow cylinder, an electric motor to generate power, enabling rotation of the rotary cylinder, a rotation reaction area disposed between the stationary hollow cylinder and the rotary cylinder, wherein ring-shaped vortex pairs that are uniformly arranged in a rotation axis direction and rotate in opposite directions are formed in the rotation reaction area, and an inlet through which a reactant fluid is fed into the rotation reaction area and an outlet through which the reactant fluid is discharged from the rotation reaction area.

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Номер записи: 51
14-05-2020 дата публикации

PROCESS FOR THE THERMO-CATALYTIC CONVERSION OF POLYMERIC MATERIALS

Номер: US20200148957A1
Автор: "DABBONDANZA Emanuele", REVERSO Riccardo
Принадлежит:

A continuous process for the cracking of a polymeric material, includes the continuous introduction of the polymeric material in a stream or bath of molten catalyst. A plant for the cracking of a polymeric material is also related and includes a closed circuit/environment containing a molten catalyst, and an element adapted to keep the molten catalyst in continuous motion. 127-. (canceled)28. A continuous process for the cracking of a polymeric material , the process comprising the continuous introduction of said polymeric material in a stream or a bath of molten catalyst.29. The process according to claim 28 , further comprising the continuous cleaning of the molten catalyst claim 28 , eliminating from the molten catalyst solid products that result from cracking of said polymeric material claim 28 , and any non-polymeric contaminants that are present together with said polymeric material.30. The process according to claim 28 , wherein said catalyst is kept at a temperature of 300-550° C.31. The process according to claim 28 , wherein said catalyst melts at a temperature of 330° C. or less.32. The process according to claim 28 , wherein said catalyst is a metal or a mixture of metals.33. The process according to claim 28 , wherein said catalyst is selected from the group consisting of lead claim 28 , tin claim 28 , zinc claim 28 , antimony claim 28 , cadmium and magnesium and mixtures thereof.34. The process according to claim 33 , wherein said catalyst is selected from the group consisting of lead claim 33 , a lead-zinc mixture claim 33 , a lead-tin mixture claim 33 , a lead-zinc-tin mixture claim 33 , a zinc-antimony mixture claim 33 , a lead-copper mixture claim 33 , a lead-antimony mixture claim 33 , a lead-cadmium mixture claim 33 , and a lead-magnesium mixture.35. The process according to claim 34 , wherein said catalyst is lead.36. The process according to claim 34 , wherein said catalyst is a mixture of metals selected from the group consisting of:a lead-tin ...

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Номер записи: 52
21-05-2020 дата публикации

HYDROPROCESSING SYSTEM WITH IMPROVED COOLING LIQUID ATOMIZATION

Номер: US20200156094A1
Автор: Patel Bandish
Принадлежит:

A hydroprocessing system having a processing vessel that discharges a high temperature effluent that must be cooled prior to collection in a reflux drum. One or more gas assisted spray nozzle are provided that utilize light atomizing gas having a density of 8-15 times less than air, such as hydrogen, which preferably is the processing or recycle gas of the system. The spray nozzles are designed for the efficient atomization and direction of cooling water into a micron sized droplet distribution utilizing the light atomizing gas for affecting higher mass and heat transfer from the effluent. The spray nozzles each include a unique atomizing gas and cooling liquid passageway systems, a downstream impingement post, and a plurality of discharge orifices which sequentially breakdown the liquid into micron sized droplets as low as 500 microns and less. 1. A hydroprocessing system comprising:a processing vessel having a hydrocarbon inlet coupled to a hydrocarbon supply for directing hydrocarbon into the processing vessel,said processing vessel having a process gas inlet coupled to a light process gas supply for directing light process gas into said processing vessel;said processing vessel having a vapor outlet for directing high temperature vapor from the processing vessel to a vapor discharge line for direction to an effluent cooler;a spraying system for directing atomized cooling water into the high temperature vapor directed through said vapor discharge line;said spraying system including a spray nozzle having an atomizing gas inlet coupled to a light gas supply and a water inlet coupled to a cooling water supply;said nozzle body having an internal protrusion extending downstream within an enlarged diameter expansion chamber of said nozzle body, said protrusion having a central gas passage communicating with said atomizing gas inlet and spray nozzle light gas supply;said protrusion having a plurality of circumferentially spaced cross gas passages communicating with said ...

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Номер записи: 53
11-09-2014 дата публикации

Catalyst Metering Device

Номер: US20140255260A1
Автор: Bekaert Daniel, Dewachter Daan
Принадлежит: TOTAL RESEARCH & TECHNOLOGY FELUY

The invention relates to a catalyst metering device with a valve formed of an iron-based alloy steel hardened to a Rockwell hardness C of at least 60. The device can be used for metering of a catalyst for an ethylene polymerization reaction. The invention further relates to ethylene polymerization wherein the catalyst is metered in a catalyst metering device with a iron-based alloy steel hardened valve, as well as to a ethylene polymerization reactor comprising such a catalyst metering device.

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Номер записи: 54
04-06-2020 дата публикации

OLIGOMERISER WITH AN IMPROVED FEED SYSTEM

Номер: US20200171452A1
Автор: Daliparthi Surya Prakasa Rao, Fernandez Ignacio Vic, Mateos Salvador Fernan
Принадлежит:

In an embodiment, a reactor for carrying out a melt transesterification reaction at a reactor temperature of 160 to 300° C. and a reactor pressure of 5 to 200 mbar, comprises a cylindrical tank comprising a top, a side, and a bottom, wherein the bottom is convex, extending away from the top; a stirring shaft disposed within the cylindrical tank along an axis thereof so that it is rotatable from outside of the cylindrical tank; a stirring blade extending from the stirring shaft in the cylindrical tank; a reactant solution inlet located on the bottom; and a reaction solution outlet located on the bottom. The reactor can be used for the polymerization of a polycarbonate oligomer. 1. A reactor for carrying out a melt transesterification reaction at a reactor temperature of 160 to 300° C. and a reactor pressure of 5 to 200 mbar , comprising:a cylindrical tank comprising a top, a side, and a bottom, wherein the bottom is convex, extending away from the top;a stirring shaft disposed within the cylindrical tank along an axis thereof so that it is rotatable from outside of the cylindrical tank;a stirring blade extending from the stirring shaft in the cylindrical tank;a reactant solution inlet located on the bottom; anda reaction solution outlet located on the bottom, wherein the stirring blade comprises a flat plate impeller.2. The reactor of claim 1 , wherein the reaction solution outlet is concentrically located on the axis of the cylindrical tank.3. The reactor of claim 1 , wherein the flat plate impeller has a plurality of openings.4. The reactor of claim 1 , wherein the stirring blade comprises a three-blade impeller.5. A method of melt polymerizing a polycarbonate claim 1 , comprising:adding a precursor solution comprising a polycarbonate precursor through a reactant solution inlet of a reactor for carrying out a melt transesterification, said reactor comprising:a cylindrical tank comprising a top, a side, and a bottom, wherein the bottom is convex, extending away from ...

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Номер записи: 55
11-06-2020 дата публикации

CHEMICAL SYNTHESIS DEVICE

Номер: US20200179890A1
Автор: INAKA Chisa, NIWA Tsukasa
Принадлежит:

A chemical synthesis device includes a reaction vessel, a waste liquid tank and an intermediate container. A chemical is supplied to the reaction vessel. The waste liquid tank is configured to hold waste liquid discharged from the reaction vessel. The intermediate container has a smaller capacity than the waste liquid tank. The intermediate container is provided between the reaction vessel and the waste liquid tank, via a waste liquid pipe. The pressure of the intermediate container is adjusted to adjust the flow supplied to the reaction vessel and the flow discharged from the reaction vessel. 1. A chemical synthesis device , comprising:a reaction vessel to which a chemical is supplied;a waste liquid tank configured to hold waste liquid discharged from the reaction vessel; andan intermediate container having a smaller capacity than the waste liquid tank, the intermediate container being provided between the reaction vessel and the waste liquid tank, via a waste liquid pipe, and the pressure of the intermediate container being adjusted to adjust the flow supplied to the reaction vessel and the flow discharged from the reaction vessel.2. The chemical synthesis device according to claim 1 , whereinthe intermediate container is provided with a pressure regulator for adjusting the pressure of the intermediate container.3. The chemical synthesis device according to claim 1 , whereinthe intermediate container is provided with a plurality of the pressure regulators having different pressure adjustment amounts, andthe pressure regulators are switched so that the pressure of the intermediate container is adjusted by a selected pressure regulator.4. The chemical synthesis device according to claim 1 , further comprisinga waste liquid shutoff valve provided to a pipe linking the intermediate container and the waste liquid tank,the waste liquid shutoff valve and the pressure regulator being selectively switched so that the pressure of the intermediate container is adjusted to ...

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Номер записи: 56
11-06-2020 дата публикации

ENERGY-EFFICIENT METHOD FOR PROVIDING A PURIFIED PHOSGENE VAPOR

Номер: US20200180965A1
Автор: Carrascosa Mas Maria, Ehrig Martin, Jens Christian Morten, Kobylka Manfred, Merkel Michael, Morbach Jan
Принадлежит:

The present invention relates to a method for producing purified phosgene vapor, comprising the following steps: 1) providing a gas flow obtainable from the reaction of chlorine with carbon monoxide and comprising phosgene and carbon monoxide; 2) one-stage or multi-stage condensation of the gas flow and separation of non-condensable residue gases; 3) one-stage or multi-stage evaporation of the liquid phosgene obtained in step 2) and optional overheating of the produced phosgene vapour, wherein there is an energy integration between one or more of the condensation steps of step 2) and one or more of the evaporation steps in step 3) and the pressure in the last condensation step is between 0.2 and 6.0 bar higher than in the first evaporation step. 1. A process for producing purified phosgene vapor ,comprising the steps of1) providing a gas stream comprising phosgene and carbon monoxide, obtained from the reaction of chlorine with carbon monoxide,2) condensing the gas stream in one or more stages and removing uncondensable residual gases,3) evaporating the liquid phosgene obtained in step 2) in one or more stages and optionally superheating the phosgene vapor generated,wherein there is energy integration between one or more of the condensation stages of step 2) and one or more of the evaporation stages in step 3) and the pressure in the last condensation stage is between 0.2 and 6.0 bar higher than in the first evaporation stage.2. The process as claimed in claim 1 , wherein the pressure in the last condensation stage is between ≥0.3 and ≤4.5 bar claim 1 , higher than in the first evaporation stage.3. The process as claimed in claim 1 , wherein the gas stream provided in step 1) claim 1 , as well as phosgene claim 1 , contains ≥1% by volume to ≤20% by volume claim 1 , of CO.4. The process as claimed in claim 1 , characterized in that the condensation in step 2) is effected at a pressure between ≥2.0 bar(a) and ≤10.0 bar(a) claim 1 , preferably between ≥2.5 bar(a) and ≤ ...

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Номер записи: 57
22-07-2021 дата публикации

Device and Method for Loading Pellets Into Reactor Tubes

Номер: US20210220787A1
Автор: Cornett Douglas Keith, Johns Clifford L, McAndrews Dennis Patrick
Принадлежит: Tubemaster, Inc.

A device for loading pellets into reactor tubes includes a portable loading box with a bottom wall defining an opening, a loading tube projecting downwardly from the opening, and a movable dam for dividing said loading box into separate chambers. 1. A portable pellet loading device , comprising:an open-top box of a size that can be carried by a person, said open-top box having a front wall; rear wall; left wall; right wall; and bottom wall; at least one opening defined in said bottom wall for allowing pellets to flow out of the box; a loading tube secured to and projecting downwardly from said bottom wall at said opening; and a movable dam in said box, said movable dam having a closed position, which divides said box into separate compartments, preventing the flow of pellets between said separate compartments, one of said separate compartments being an isolation compartment spaced away from said opening, and another of said separate compartments being a containment compartment, in communication with said opening; said dam also having an open position, which permits pellets to flow between said isolation compartment and said containment compartment.2. A portable pellet loading device as recited in claim 1 , wherein said opening has a diameter claim 1 , and said loading tube has an inside diameter larger than said diameter of said opening.3. A portable pellet loading device as recited in claim 2 , wherein said movable dam comprises tracks mounted on said box claim 2 , and a plate slidably mounted in said tracks claim 2 , wherein said plate is slid downwardly to said closed position and upwardly to said open position.4. A portable pellet loading device as recited in claim 3 , and further comprising a bail-type handle mounted on said box for carrying said box.5. A portable pellet loading device as recited in claim 2 , and further comprising a slotted opening defined in said loading tube spaced a distance below said bottom wall; and a movable choke plate movably mounted ...

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Номер записи: 58
22-07-2021 дата публикации

REACTOR FOR A METALLOCENE CATALYST-BASED SOLUTION POLYMERIZATION PROCESS FOR PREPARING POLYOLEFIN POLYMERS

Номер: US20210220794A1
Автор: KIM Yangkee
Принадлежит:

Disclosed is a reactor for solution polymerization process using a metallocene catalyst for preparing polyolefin. The reactor includes: a reaction vessel for mixing a hydrocarbon-based solvent and an olefin monomer to produce polyolefin; a feed inlet installed at a lower portion of the reaction vessel to feed a feed including an unreacted monomer, a solvent, and a catalyst into the reaction vessel; a guide pipe having a cylinder shape being open at respective ends, installed along a central axis of the reaction vessel, and dividing an internal space of the reaction vessel into an up-flow region where a reaction mixture flows upward and a down-flow region where the reaction mixture flows downward; a swirling flow-inducing blade attached to the exterior surface of the guide pipe, causing the reaction mixture in the reaction vessel to rise along the exterior surface of the guide pipe while forming a swirling flow. 1. A reactor for a solution polymerization process using a metallocene catalyst for preparing polyolefin polymers , the reactor comprising:a reaction vessel configured to mix a hydrocarbon-based solvent and an olefin monomer, thereby preparing polyolefin polymers;a feed inlet installed at a lower portion of the reaction vessel and feeding a feed including an unreacted monomer, a solvent, and a catalyst into the reaction vessel;a guide pipe having a cylinder shape being open at respective ends, installed in the reaction vessel along a central axis of the reaction vessel, and dividing an internal space of the reaction vessel into an up-flow region where a reaction mixture flows upward and a down-flow region where the reaction mixture flows downward;a swirling flow-inducing blade having a helical screw blade shape and attached to an exterior surface of the glide pipe, the swirling flow-inducing blade causing the reaction mixture in the reaction vessel to rise along the exterior surface of the guide pipe while forming a swirling flow, then to enter into the guide ...

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Номер записи: 59
27-06-2019 дата публикации

SCALE COLLECTION DEVICE FOR DOWNFLOW REACTORS

Номер: US20190193038A1
Автор: Bunting, Chen Pengfei, JR. Robert L., Xu Zhanping
Принадлежит:

The invention involves a scale collection device that is located within downflow reactor head for removing solids from feed streams to increase reactor operating cycle time without impact on effective reactor space for catalyst loading and reactor pressure drop. More particularly, a scale collection device is located in an upper portion of a reactor vessel above a rough liquid distribution tray and a vapor-liquid distribution tray. 1. A reactor comprising an upper portion and a lower portion wherein the upper portion contains a scale collection device above a rough liquid distribution tray , wherein a vapor-liquid distribution tray is located below the rough liquid distribution tray and wherein the scale collection device comprises bottom plate having a plurality of perforations and a side wall with chimneys along the wall.2. The reactor of claim 1 , wherein the scale collection device has a filtering zone spaced a short distance above bottom plate and the filtering zone comprises a single layer of filtering material having the same physical and chemical properties.3. The reactor of claim 1 , wherein the scale collection device has a filtering zone with two or more layers of filtering materials with different physical or chemical properties.4. The reactor of claim 1 , wherein the filtering zone comprises porous ceramic pellets.5. The reactor of claim 1 , wherein the filtering zone comprises filtering materials containing active materials for promoting certain chemical reactions.6. The reactor of claim 1 , wherein the scale collection device is spaced above the rough liquid distribution tray by a plurality of spacers or beams.7. The reactor of claim 1 , wherein the scale collection device comprises profile wire.8. The reactor of claim 1 , wherein the scale collection device comprises grating.9. The reactor of claim 1 , wherein the scale collection device comprises wire mesh.10. The reactor of claim 1 , wherein the perforations on the bottom plate of the scale ...

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Номер записи: 60
27-06-2019 дата публикации

SCALE COLLECTION DEVICE FOR DOWNFLOW REACTORS

Номер: US20190193039A1
Автор: Xu Zhanping
Принадлежит:

The invention involves a scale collection device that is located within downflow reactor head for removing solids from feed streams to increase reactor operating cycle time without impact on effective reactor space for catalyst loading. More particularly, a filtering zone is located in an upper portion of a reactor vessel above a rough liquid distribution tray and a distribution tray. 1. A reactor comprising an upper portion and a lower portion wherein the upper portion contains an inlet nozzle and a scale collection device wherein a filtering zone is located above a rough liquid distribution tray and wherein a vapor-liquid distribution tray is located below the rough liquid distribution tray.2. The reactor of claim 1 , wherein the lower portion contains a catalyst bed.3. The reactor of claim 1 , wherein the lower portion contains a medium.4. The reactor of claim 1 , wherein the lower portion contains a packing.5. The reactor of claim 1 , wherein the filtering zone comprises one layer of filtering material having the same physical and chemical properties.6. The reactor of claim 1 , wherein the filtering zone comprises multiple layers of filtering material having different physical and chemical properties.7. The reactor of claim 1 , wherein the filtering zone comprises porous ceramic pellets.8. The reactor of claim 1 , wherein a packed bed support plat is space above the rough liquid distribution tray.9. The reactor of claim 8 , wherein the packed bed support plate includes annular perforations for liquid flow.10. The reactor of claim 1 , wherein the vapor-liquid distribution tray comprises a plurality of distributors.11. The reactor of claim 1 , wherein the rough liquid distribution tray contains holes sized to generate the desired liquid level on the rough liquid distribution tray.12. An apparatus comprising an upper portion and a lower portion wherein the upper portion contains an inlet nozzle and a scale collection device wherein a filtering zone is located above ...

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Номер записи: 61
27-06-2019 дата публикации

SOLID PHASE PEPTIDE SYNTHESIS

Номер: US20190194246A1
Автор: Collins Jonathan M.
Принадлежит: CEM CORPORATION

An improved method of deprotection in solid phase peptide synthesis is disclosed. In particular the deprotecting composition is added in high concentration and small volume to the mixture of the coupling solution, the growing peptide chain, and any excess activated acid from the preceding coupling cycle, and without any draining step between the coupling step of the previous cycle and the addition of the deprotection composition for the successive cycle. Thereafter, the ambient pressure in the vessel is reduced with a vacuum pull to remove the deprotecting composition without any draining step and without otherwise adversely affecting the remaining materials in the vessel or causing problems in subsequent steps in the SPPS cycle. 1. A system for microwave assisted solid phase peptide synthesis comprising:a microwave source positioned to direct microwave radiation into a microwave cavity;a microwave transparent reaction vessel in said cavity; anda vacuum source connected to said reaction vessel.2. A method according to further comprising a trap between said reaction vessel and said vacuum Source.3. A method according to wherein said cavity can support a single mode of microwave radiation at the microwave frequencies produced by said microwave source.4. A method according to where wherein said reaction vessel comprises:a (glass) frit for draining liquids from said reaction vessel; anda spray head for delivery of reagents to said reaction vessel.5. A system according to further comprising a fiber optic temperature probe positioned to read the temperature of said reaction vessel in said cavity (for controlling the microwave power delivered to said reaction vessel).6. A system according to that incorporates nitrogen pressure to transfer all reagents and to provide an inert environment during peptide synthesis.7. A system according to further comprising a nitrogen source in communication with said reaction vessel to bubble the contents of said reaction vessel for mixing ...

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Номер записи: 62
16-10-2014 дата публикации

Polyolefin production with different diluents in multiple polymerization reactors

Номер: US20140309382A1
Автор: Catherine M. Gill, Elizabeth Ann Benham, Joel A. Mutchler, Maruti Bhandarkar, Rebecca A. Gonzales, Scott E. Kufeld, Thanh T. Nguyen, Timothy O. Odi
Принадлежит: Chevron Phillips Chemical Co LP

A system and method for producing polyolefin, including a polyolefin reactor system having: a first reactor to produce a first reactor discharge stream having a first polyolefin and a first diluent; and a second reactor to receive at least a portion of the first reactor discharge stream and to produce a second reactor discharge stream having a second polyolefin and a second diluent, wherein the second diluent is different than the first diluent.

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Номер записи: 63
12-08-2021 дата публикации

Reactor for Pyrolysis Conversion of Hydrocarbon Gases

Номер: US20210245128A1
Автор: Chen Lei, PANNALA Sreekanth, Shtern Vladimir, WEST David
Принадлежит:

A pyrolysis reactor () and method for the pyrolysis of hydrocarbon gases (e.g., methane) utilizes a pyrolysis reactor () having a unique burner assembly () and pyrolysis feed assembly () that creates an inwardly spiraling fluid flow pattern of the feed gases to form a swirling gas mixture that passes through a burner conduit () with a constricted neck portion or nozzle (). At least a portion of the swirling gas mixture forms a thin, annular mixed gas flow layer immediately adjacent to the burner conduit (). A portion of the swirling gas mixture is combusted as the swirling gas mixture passes through the burner conduit () and a portion of combustion products circulates in the burner assembly (). This provides conditions suitable for pyrolysis of hydrocarbons or light alkane gas, such as methane or natural gas. 1. A subsonic pyrolysis reactor for the pyrolysis of hydrocarbon gases comprising:a pyrolysis reactor vessel having a reactor wall that defines a pyrolysis reaction chamber;a burner assembly having a burner conduit with a circumferential wall that surrounds a central longitudinal axis and extends from opposite upstream and downstream ends of the burner conduit, the circumferential wall tapering in width from the downstream and upstream ends to an annular constricted neck portion located between the downstream and upstream ends of the burner conduit, the downstream end of the burner conduit being in fluid communication with the reaction chamber of the pyrolysis reactor, the upstream end of the burner conduit forming a burner assembly inlet; a downstream feed assembly wall that extends circumferentially around and joins the upstream end of the burner assembly inlet, the downstream feed assembly wall being oriented perpendicular to the central axis;', 'an upstream feed assembly wall that is axially spaced upstream from the downstream wall along the central axis and extends perpendicularly across the central axis;', 'a gas partition wall axially spaced between the ...

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Номер записи: 64
02-07-2020 дата публикации

POLYMERIZATION REACTOR SYSTEM COMPRISING AT LEAST ONE WITHDRAWAL VALVE

Номер: US20200207879A1
Автор: Elovainio Erno, Vijay Sameer, Wurnitsch Christof
Принадлежит:

Described herein is a polymerization reactor system comprising at least one loop reactor and/or at least one transfer line, and further comprising at least one withdrawal valve, wherein the at least one withdrawal valve is mounted to a wall of a lower horizontal segment of the loop reactor and/or to a wall of the transfer line, at an angle α of more than 0° and equal to or less than 85°, determined from perpendicular to a tangent of the wall at the mounting position in flow direction of a slurry in the loop reactor and/or in the transfer line. The valve piston of the at least one withdrawal valve comprises a valve plate at an end directed to the at least one loop reactor and/or at an end directed to the at least one transfer line, the valve plate being shaped according to an inner wall of the at least one loop reactor and/or according to an inner wall of the at least one transfer line such that the valve piston is flush with the inner wall of the at least one loop reactor and/or with the inner wall of the at least one transfer line in a closed position of the withdrawal valve. By using such a withdrawal valve, a limitation of the effective withdrawal area can be avoided or at least be reduced such that the liquid slurry can efficiently be withdrawn and the risk of plugging is reduced. Further disclosed is a method for producing an olefin polymer in the inventive polymerization reactor system. 1. Polymerization reactor system comprising at least one loop reactor and/or at least one transfer line , and further comprising at least one withdrawal valve , the at least one withdrawal valve comprising a valve cylinder and a valve piston within the valve cylinder ,wherein at least one withdrawal valve is mounted to a wall of a lower horizontal segment of the at least one loop reactor at an angle α of more than 0° and equal to or less than 85°, determined from perpendicular to a tangent of the wall at the mounting position in flow direction of a slurry in the at least one ...

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Номер записи: 65
02-07-2020 дата публикации

PROCESS FOR INTRODUCING CATALYST IN A POLYMERIZATION PROCESS

Номер: US20200207886A1
Автор: Cavalli Élita, Martins Junior Olavo, Pozzer Dihogenes Adriano
Принадлежит: Braskem S.A.

Methods of adding a catalyst to a bulk polymerization process may include mixing the catalyst with propylene to form a catalyst mixture that is substantially free of any C20 or greater hydrocarbons, feeding the catalyst mixture into a polymerization reactor, activating the catalyst mixture; and performing a polymerization on the catalyst mixture in the polymerization reactor. Polymers may be formed by polymerization processes that are substantially free of any C20 or greater hydrocarbons. 1. A method of adding a catalyst to a bulk polymerization process , the method comprising:mixing the catalyst with propylene to form a catalyst mixture that is substantially free of any C20 or greater hydrocarbons;feeding the catalyst mixture into a polymerization reactor;activating the catalyst mixture; andperforming a polymerization on the catalyst mixture in the polymerization reactor.2. The method of claim 1 , wherein the activation takes place before the catalyst mixture is fed into the polymerization reactor.3. The method of claim 1 , wherein the activation takes place after the catalyst mixture is fed into the polymerization reactor.4. The method of claim 1 , further comprising performing a preliminary polymerization on at least a portion of the catalyst mixture before the polymerization and after the catalyst mixture is fed into the polymerization reactor.5. The method of claim 4 , wherein the activation takes place after the catalyst mixture is fed into the polymerization reactor and before the preliminary polymerization is performed.6. The method of claim 4 , wherein the preliminary polymerization is performed contemporaneously with the activation.7. The method of claim 4 , wherein both the polymerization and the preliminary polymerization are performed in the same polymerization reactor.8. The method of claim 4 , wherein each of the polymerization and the preliminary polymerization are performed in different polymerization reactors.9. The method of claim 4 , wherein ...

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Номер записи: 66
10-08-2017 дата публикации

Apparatus for Addition of Droplets of a Monomer Solution to a Reactor

Номер: US20170225138A1
Автор: Bayer Robert, Daiss Andreas, Freiberg Jürgen, Krüger Marco, Possemiers Karl J., Schliwa Rudolf
Принадлежит:

An apparatus for addition of droplets of a monomer solution for production of poly(meth)acrylate to a reactor for droplet polymerization, comprising at least one channel or a dropletizer head having, at its base, holes through which the solution is dropletized into the reactor, at least one of the following features being fulfilled: 224252635. The apparatus according to claim 1 , wherein the channels ( claim 1 , ) are sealed at their base by dropletizer plates () in which the holes () for dropletization of the solution are accommodated.325. The apparatus according to claim 1 , wherein the channels () are arranged in a star shape in the reactor.42425111. The apparatus according claim 1 , wherein the channels ( claim 1 , ) are arranged in a rotationally symmetric manner about the center of the reactor () claim 1 , the channels each projecting into the reactor () to different extents from the outer wall in the direction of the center of the reactor ().525. The apparatus according to claim 1 , wherein a plurality of parallel channels () in each case are aligned transverse to one another.6. The apparatus according to claim 1 , wherein at least one annular channel is included.7. The apparatus according to claim 1 , wherein the dropletizer head has a circular or homogeneous polygonal cross section.835. The apparatus according to claim 1 , wherein the holes () have a diameter in the range from 25 to 500 μm.935. The apparatus according to claim 1 , wherein the holes () have a distance from one another in the range from 1 to 100 mm.10. The apparatus according to claim 1 , wherein the number of holes relative to the area of the dropletizers is in the range from 1000 to 15 000 holes/m.11. (canceled) The invention proceeds from an apparatus for addition of droplets of a monomer solution for production of poly(meth)acrylate to a reactor for droplet polymerization, comprising at least one channel or a dropletizer head having, at its base, holes through which the solution is ...

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Номер записи: 67
16-08-2018 дата публикации

METHODS AND SYSTEMS FOR DEPOSITING ACTIVE INGREDIENTS ON SUBSTRATES

Номер: US20180228737A1
Автор: Fiesser Frederick, Giridhar Arun V., Harris Michael, Hirshfield Laura, Icten Elcin, Nagy Zoltan K., Raklaitis Gintaras V., Taylor Lynne S.
Принадлежит: PURDUE RESEARCH FOUNDATION

Systems and methods for delivering active ingredients, such as pharmaceutically active ingredients, to substrates are described herein. The active ingredients are delivered as fluids to a fluid-dispensing device for the creation of one or more drops for deposition onto substrates such as for the creation of microdoses. The invention further includes microdoses made by such processes. 1. An active ingredient delivery system comprising:a. a fluid reservoir for receiving a fluid therein;b. a fluid-delivery apparatus in contact with the reservoir, comprising a pump and a fluid-dispensing device;c. a real-time drop-imaging and measurement device; andd. a substrate holder comprising a stage and a substrate.2. The system of claim 1 , further comprising the fluid claim 1 , wherein the fluid comprises an active ingredient claim 1 , wherein the fluid dispensing device is a nozzle claim 1 , and wherein the substrate holder further comprises a heating element and a cooler.3. (canceled)4. (canceled)5. The system of claim 2 , wherein the fluid is selected from the group consisting of an excipient claim 2 , a solution claim 2 , a colloid claim 2 , a melt claim 2 , a suspension claim 2 , and an emulsion.69.-. (canceled)10. The system of claim 2 , wherein the active ingredient is a pharmaceutically active ingredient.1114.-. (canceled)15. The system of claim 1 , wherein a fluid transfer tube connects the pump to at least one of the reservoir and the fluid dispensing device.16. (canceled)17. The system of claim 2 , wherein at least one of the reservoir claim 2 , the nozzle claim 2 , and/or the pump is/are under temperature control.1824.-. (canceled)25. The system of claim 1 , wherein the pump is a positive displacement pump and further comprises a controller for adjusting pump parameters.2630.-. (canceled)31. The system of claim 1 , wherein the real-time drop-imaging and measurement device is configured to image fluids emerging from the fluid dispensing device as one or more drops and ...

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Номер записи: 68
26-08-2021 дата публикации

System and Method for Rapid Dump Tank Heating

Номер: US20210261694A1
Автор: CHANG Ai-fu, CURREN Joseph A., Hein James E., Romig Ralph W.
Принадлежит:

A method of operating a dump tank of a polymer production process by transferring all or a portion of a content of a polymerization reactor into the dump tank, wherein the reactor contents comprise solid polymer, and liquid and gaseous non-product components, and removing at least a portion of the liquid and gaseous non-product components from the dump tank by: reducing a pressure of the dump tank, subjecting the solid polymer to a first cleaning stage comprising heating the solid polymer by introducing a first heated treatment gas into the dump tank, and subjecting the solid polymer to a second cleaning stage comprising purging the solid polymer by introducing a second heated treatment gas into the dump tank. 1. A method of operating a dump tank of a polymer production process , the method comprising:transferring all or a portion of a content of a polymerization reactor into the dump tank, wherein the reactor contents comprise solid polymer, and liquid and gaseous non-product components; and reducing a pressure of the dump tank, whereby a flash gas comprising a first portion of the at least a portion of the liquid and gaseous non-product components is recovered from the dump tank;', 'subjecting the solid polymer to a first cleaning stage comprising heating the solid polymer by introducing a first heated treatment gas comprising primarily one or more hydrocarbons into the dump tank until a first cleaning stage temperature of the solid polymer is attained and recovering a first gas comprising at least a portion of the first heated treatment gas and a second portion of the at least a portion of the liquid and gaseous non-product components from the dump tank during the first cleaning stage; and', 'removing a portion of the one or more hydrocarbons from the first gas to yield recovered hydrocarbons and a treated first gas., 'removing at least a portion of the liquid and gaseous non-product components from the dump tank by2. The method of further comprising recycling a ...

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Номер записи: 69
01-08-2019 дата публикации

SCALE COLLECTION DEVICE FOR DOWNFLOW REACTORS

Номер: US20190232243A1
Автор: Bunting, JR. Robert L., Lesniak Steven J., Xu Zhanping
Принадлежит:

The invention involves a scale collection device that is located within downflow reactor head for removing solids from feed streams to increase reactor operating cycle time without impact on effective reactor space for catalyst loading. More particularly, a filtering zone is located in an upper portion of a reactor vessel above a rough liquid distribution tray and a distribution tray. 1. A reactor comprising an upper portion and a lower portion wherein the upper portion contains a scale collection device wherein a filtering zone is located above a rough liquid distribution tray , wherein a vapor-liquid distribution tray is located below the rough liquid distribution tray and wherein the distribution tray comprises a plurality of distributors which separate a filter media bed.2. The reactor of claim 1 , wherein the filtering zone comprises a first portion in an upper region comprising porous pellets having larger pores than a second portion in a lower region of the filtering zone.3. The reactor of claim 1 , wherein the filtering zone comprises porous ceramic pellets.4. The reactor of claim 1 , wherein the filtering zone is spaced above the rough liquid distribution tray by a plurality of spacers.5. The reactor of claim 1 , wherein the spacers are coupled to the rough liquid distribution tray and the vapor-liquid distribution tray.6. The reactor of claim 1 , wherein the filter media bed support comprises profile wire.7. The reactor of claim 1 , wherein the filter media bed support comprises grating.8. The reactor of claim 1 , wherein the filter media bed support comprises grating and wire mesh.9. The reactor of claim 1 , wherein the floor of the scale collection device comprises a perforated plate.10. The reactor of claim 9 , wherein the overflow chimneys contain slots claim 9 , wherein the slots may be v-shaped.11. The reactor of claim 9 , wherein the overflow chimneys contain cuts.12. The reactor of claim 9 , wherein the overflow chimneys contain holes.13. The ...

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Номер записи: 70
01-08-2019 дата публикации

SCALE COLLECTION DEVICE FOR DOWNFLOW REACTORS

Номер: US20190232244A1
Автор: Bunting, JR. Robert L., Lesniak Steven J., Xu Zhanping
Принадлежит:

The invention involves a scale collection device that is located within downflow reactor head for removing solids from feed streams to increase reactor operating cycle time without impact on effective reactor space for catalyst loading. More particularly, a filtering zone is located in an upper portion of a reactor vessel above a rough liquid distribution tray and a distribution tray. 1. A reactor comprising an upper portion and a lower portion wherein the upper portion contains a scale collection device wherein a filtering zone is located above a rough liquid distribution tray and wherein a vapor-liquid distribution tray is located below the rough liquid distribution tray.2. The reactor of claim 1 , wherein the lower portion contains a catalyst bed.3. The reactor of claim 1 , wherein the lower portion contains a medium.4. The reactor of claim 1 , wherein the lower portion contains a packing.5. The reactor of claim 1 , wherein the filtering zone comprises one layer of filtering material having the same physical and chemical properties.6. The reactor of claim 1 , wherein the filtering zone comprises multiple layers of filtering material having different physical and chemical properties.7. The reactor of claim 1 , wherein the filtering zone comprises porous ceramic pellets.8. The reactor of claim 1 , wherein the filtering zone is spaced above the rough liquid distribution tray by a plurality of spacers.9. The reactor of claim 8 , wherein the spacers are coupled to the rough liquid distribution tray and the vapor-liquid distribution tray.10. The reactor of claim 1 , wherein the vapor-liquid distribution tray comprises a plurality of distributors.11. The reactor of claim 1 , wherein the rough liquid distribution tray contains holes sized to generate the desired liquid level on the rough liquid distribution tray.12. An apparatus comprising an upper portion and a lower portion wherein the upper portion contains a scale collection device wherein a filtering zone is located ...

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Номер записи: 71
23-07-2020 дата публикации

Methods of Polyolefin Solids Recovery

Номер: US20200231718A1
Автор: Kevin W. Lawson
Принадлежит: ExxonMobil Chemical Patents Inc

Methods for separating gaseous components, such as unreacted hydrocarbon monomer and/or solvent, from polyolefin solids are provided. The methods include contacting a first stream including polyolefin solids and gaseous unreacted hydrocarbon monomer and/or solvent with a first purge gas in a gas-solid separation vessel to separate the gaseous unreacted hydrocarbon monomer and/or solvent from the polyolefin solids to produce a second stream including polyolefin solids substantially free of gaseous unreacted hydrocarbon monomer and/or solvent and a third stream including the gaseous unreacted hydrocarbon monomer and/or solvent. The first purge gas includes hydrocarbon monomer and/or solvent and has a temperature of at least about 70° C. when entering the gas-solid separation vessel. Systems for carrying out such methods are also provided.

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Номер записи: 72
07-10-2021 дата публикации

Method and Reactor for Conversion of Hydrocarbons

Номер: US20210308650A1
Автор: Byeongjin BAEK, David West, Istvan Lengyel, Krishnan Sankaranarayanan, Lei Chen, Sreekanth Pannala, Vladimir SHTERN
Принадлежит: SABIC Global Technologies BV

A reactor (12, 128, 198) and method for the conversion of hydrocarbon gases utilizes a reactor (12, 128, 198) having a unique feed assembly (58, 136, 200) with an original vortex disk-like inlet flow spaces (72, 74, 76, 80, 146, 148, 150, 152, 208, 216, 218), a converging-diverging vortex mixing chamber (116), and a cylindrical reactor chamber (40). This design creates a small combustion zone and an inwardly swirling fluid flow pattern of the feed gases that passes through a converging conduit (48) with a constricted neck portion (54). This provides conditions suitable for efficient cracking of hydrocarbons, such as ethane, to form olefins.

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Номер записи: 73
21-10-2021 дата публикации

DEVICE FOR DISPENSING A FLUID, WHICH DEVICE CAN BE ARRANGED IN A REACTOR COMPRISING A FIXED CATALYTIC BED

Номер: US20210322942A1
Автор: BOUTROT Catherine, LE COZ Jean-Francois
Принадлежит: AXENS

The invention relates to a device (D) for distributing a fluid, which is able to be arranged in a fixed catalytic bed (C, C) of a reactor (R), said device comprising 232210ab. The device as claimed in claim 1 , characterized in that it comprises a plurality of distribution means () claim 1 , a plurality of manifold means (; ) claim 1 , and transfer means ();and in that:{'b': 2', '2, 'i': a', 'b, 'said manifold means (; ) are arranged one below the other,'}{'b': 10', '2', '2, 'i': a', 'b, 'said transfer means () provide the fluidic connection between the plurality of the manifold means (; ).'}3212bb. The device as claimed in claim 1 , wherein the manifold means for collecting together said fluid comprise at least one tube or an array of tubes () claim 1 , to which the pipes of the conveying means () are connected claim 1 , said tube or tubes () being closed at their ends.42b. The device as claimed in claim 1 , wherein said array of tubes () is arranged in the form of a cross claim 1 , a network claim 1 , a grid or a star.521a. The device as claimed in claim 1 , wherein the manifold means for collecting-together said fluid comprise at least one ring () claim 1 , preferably of toric or oval or polygonal shape claim 1 , to which the pipes () of the conveying means are connected.611022ab. The device as claimed in claim 1 , wherein said fluid conveying means () and/or the transfer means () extend along an axis z and each of said fluid-collecting manifold means (; ) extend in a plane (P) claim 1 , such that the axis (z) and the plane (P) form an angle (a) comprised between 60 and 120 degrees claim 1 , preferentially an angle of 90 degrees.75. The device as claimed in claim 1 , wherein said means for generating a local pressure drop comprise a restriction in the cross section for passage of the fluid of the restriction orifice () claim 1 , local narrowing or bellows type.8322ab. The device as claimed in claim 1 , wherein said fluid distribution means comprise a plurality of ...

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Номер записи: 74
22-08-2019 дата публикации

DIFFUSER ASSEMBLIES AND CATALYTIC REACTORS COMPRISING THE SAME

Номер: US20190257233A1
Автор: Burtt Colby A., Buynitzky William D., DIFRANCESCO Chris E., LYONS Steve M., SCHIRMER MARK L., TREFZGER Christian
Принадлежит:

Briefly, in one aspect, a catalytic assembly described herein comprises a module comprising at least one layer of structural catalyst bodies having an inlet face for receiving a gas stream. A diffuser assembly is arranged a distance of greater than 50 mm from the inlet face, the diffuser assembly including at least one diffuser element comprising a plurality of apertures, wherein a ratio of aperture length (L) in the gas stream flow direction to aperture hydraulic diameter (D) is less than 1. 1. A catalytic assembly comprising:a module comprising at least one layer of structural catalyst bodies, the layer having an inlet face for receiving a gas stream; and{'sub': 'a', 'a diffuser assembly arranged a distance of greater than 50 mm from the inlet face, the diffuser assembly including at least one diffuser element comprising a plurality of apertures, wherein a ratio of aperture length (L) in the gas stream flow direction to aperture hydraulic diameter (D) is less than 1.'}2. The catalytic assembly of claim 1 , wherein the distance from the diffuser assembly to the inlet face is at least 75 mm.3. The catalytic assembly of claim 1 , wherein the distance from the diffuser assembly to the inlet face is at least 100 mm.4. The catalytic assembly of claim 1 , wherein the distance from the diffuser assembly to the inlet face is 75-200 mm.5. The catalytic assembly of claim 1 , wherein L/D<0.5.6. The catalytic assembly of claim 1 , wherein the aperture hydraulic diameter (D) is greater than flow channel hydraulic diameter of the structural catalyst bodies.7. The catalytic assembly of claim 1 , wherein the aperture hydraulic diameter (D) is greater than 7 mm.8. The catalytic assembly of claim 1 , wherein the aperture hydraulic diameter (D) is greater than 9 mm.9. The catalytic assembly of claim 1 , the apertures are polygonal.10. The catalytic assembly of claim 1 , wherein the apertures are circular or elliptical.11. The catalytic assembly of claim 1 , wherein the aperture ...

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Номер записи: 75
13-08-2020 дата публикации

Systems and Methods for Renewable Fuel

Номер: US20200255746A1
Автор: Freel Barry A., Graham Robert G.
Принадлежит:

The present application generally relates to the introduction of a renewable fuel oil as a feedstock into refinery systems or field upgrading equipment. For example, the present application is directed to methods of introducing a liquid thermally produced from biomass into a petroleum conversion unit; for example, a refinery fluid catalytic cracker (FCC), a coker, a field upgrader system, a hydrocracker, and/or hydrotreating unit; for co-processing with petroleum fractions, petroleum fraction reactants, and/or petroleum fraction feedstocks and the products, e.g., fuels, and uses and value of the products resulting therefrom. 1. A fuel , comprising:a product of a fluidized catalytic cracker having a petroleum fraction and a renewable fuel oil as reactants.2. The fuel of claim 1 , wherein the fuel comprises a product of a fluidized catalytic cracker co-processing a petroleum fraction and a renewable fuel oil.3. The fuel according to claim 1 , wherein the fuel comprises a fuel composition derived from:i) 80-99.95 wt. % of the petroleum fraction feedstock; andii) 0.05-20 wt. % of the renewable fuel oil feedstock.4. The fuel according to claim 1 , wherein the prepared fuel is a transportation fuel.5. The fuel according to claim 1 , wherein the renewable fuel oil is derived from a cellulosic biomass.6. The fuel according to claim 1 , wherein the renewable fuel oil is an unenriched renewable fuel oil.71. The fuel according to claim wherein the renewable fuel oil has a pH in the range of 0.5 to 7.8. The fuel according to claim 1 , wherein the renewable fuel oil has a water content in the range of between 10-40 wt. %.9. The fuel according to claim 1 , wherein the renewable fuel oil has in the range of between 35-80 wt. % carbon content and in the range of between 20-50 wt. % oxygen content claim 1 , on a dry basis or moisture-free basis.10. A method of preparing a fuel claim 1 , comprising:processing a petroleum fraction feedstock with a renewable fuel oil feedstock in the ...

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Номер записи: 76
18-11-2021 дата публикации

SYSTEM AND METHOD FOR MANUFACTURING ESTER-BASED COMPOSITION

Номер: US20210355068A1
Автор: JIN Chan Hyu, JUN Hyoung, KIM Hyun Kyu, Lee Sung Kyu, MOON Jeong Ju
Принадлежит:

The present disclosure relates to a method and a system for manufacturing an ester-based composition which are characterized in sequentially operating a plurality of batch reactors, and since an ester-based composition is semi-continuously manufactured, the productivity is high and the stability of a batch reactor is secured. 17-. (canceled)8. A method for manufacturing an ester-based composition , the method comprising:{'b': '1', 'a step S of injecting a polycarboxylic acid and a first alcohol having 3 to 10 alkyl carbon atoms into a mixer to form a reaction mixture;'}{'b': '2', 'a step S of sequentially injecting the reaction mixture into N number of batch reactors connected in parallel to perform a reaction such that the reaction is sequentially completed in the N number of batch reactors to semi-continuously manufacture reaction products; and'}{'b': '3', 'a step S of semi-continuously moving the reaction products into a separation unit to remove unreacted alcohol,'}wherein N is an integer of 3 or greater.9. The method of claim 8 , further comprising{'b': 1', '1', '1', '2, 'a step S- of adding a catalyst to the reaction mixture between the step S and the step S; or'}{'b': 1', '2', '1, 'a step S- of adding a catalyst to the polycarboxylic acid and the first alcohol having 3 to 10 alkyl carbon atoms before the step S.'}10. The method of claim 9 , wherein the catalyst is tetraalkyl titanate.111. The method of claim 8 , wherein the step S further comprises a step in which the reaction mixture is heated to 50-200° C.122. The method of claim 8 , wherein the temperature at which the reaction of the step S is performed is 130-250° C.13441. The method of claim 8 , further comprising a step S of injecting a second alcohol having 3 to 10 alkyl carbon atoms into the reaction products from which the unreacted alcohol is removed to perform a trans-esterification reaction claim 8 , wherein the second alcohol injected in the step S is different from the first alcohol injected in ...

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Номер записи: 77
25-12-2014 дата публикации

Methods and Systems for Catalyst Delivery

Номер: US20140378640A1
Автор: Goode Mark G., II James L., Parrish John R., Swecker, Wright Dale A.
Принадлежит: UNIVATION TECHNOLOGIES, LLC

A method for the delivery of a catalyst to a polymerization reactor is disclosed, comprising: contacting a catalyst with a carrier fluid comprising an inert hydrocarbon in gaseous form, the inert hydrocarbon having a normal boiling point of about −1° C. to about 81° C.; and flowing the carrier fluid to the polymerization reactor such that the carrier fluid transports the catalyst to the polymerization reactor. A catalyst delivery system is disclosed, comprising: a catalyst vessel for containing a catalyst; a catalyst injection line for delivering the catalyst to a polymerization reactor, the catalyst injection line being in fluid communication with the catalyst vessel and the polymerization reactor; and a carrier fluid line in fluid communication with the catalyst injection line for delivering a carrier fluid comprising an inert hydrocarbon to the catalyst injection line, the inert hydrocarbon having a normal boiling point of about −1° C. to about 81° C. 1. A method for the delivery of a catalyst to a polymerization reactor , comprisingcontacting a catalyst with a carrier fluid comprising an inert hydrocarbon, the inert hydrocarbon having a normal boiling point of about −1° C. to about 81° C.; andflowing the carrier fluid to the polymerization reactor such that the carrier fluid transports the catalyst to the polymerization reactor.2. The method of any preceding claim , wherein the inert hydrocarbon comprises n-butane.3. The method of any preceding claim , wherein the inert hydrocarbon comprises isopentane.4. The method of any preceding claim , wherein the inert hydrocarbon comprises a saturated C5 or a saturated C6 hydrocarbon.5. The method of any preceding claim , wherein the carrier fluid further comprises nitrogen.6. The method of any preceding claim , wherein the carrier fluid comprises an inert hydrocarbon in gaseous form , liquid form , or a combination thereof.7. The method of any preceding claim , wherein the inert hydrocarbon in gaseous form at least ...

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Номер записи: 78
12-09-2019 дата публикации

Integrated process and plant for production of urea and uas (urea-ammonium sulphate) mixtures

Номер: US20190276325A1
Автор: Lino Carlessi, Lorenzo BRUNO
Принадлежит: Saipem Spa

An integrated process for production of urea and urea-ammonium sulphate (“UAS”) comprises: a urea synthesis step carried out in a urea synthesis reactor; a recovery and concentration step, wherein a urea solution produced in the urea synthesis step is progressively concentrated in at least one recovery section and in a concentration section, recovering unreacted ammonia and carbon dioxide and water from said urea solution; a step of producing ammonium sulphate by reaction of sulphuric acid and ammonia in an ammonium sulphate production apparatus; a step of mixing said ammonium sulphate with concentrated urea coming from the concentration section to produce a UAS mixture; in the ammonium sulphate production step, at least a part of the ammonia is provided by at least one off-gas containing ammonia and recovered from the recovery and concentration step.

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Номер записи: 79
23-12-2021 дата публикации

Method and facility for converting uranium hexafluoride into uranium dioxide

Номер: US20210398699A1
Автор: Andre Feugier, Bruno MESONA
Принадлежит: Framatome SA

A method for converting uranium hexafluoride to uranium dioxide includes steps of hydrolysis of UF 6 to uranium oxyfluoride (UO 2 F 2 ) in a hydrolysis reactor ( 4 ) by reaction between gaseous UF 6 and dry water vapour injected into the reactor ( 4 ), and pyrohydrolysis of UO 2 F 2 to UO 2 in a pyrohydrolysis furnace ( 6 ) by reaction of UO 2 F 2 with dry water vapour and hydrogen gas (H 2 ) injected into the furnace ( 6 ). The hourly mass flowrate of gaseous UF 6 supplied to the reactor ( 4 ) is between 75 and 130 kg/h, the hourly mass flowrate of dry water vapour supplied to the reactor ( 4 ) for hydrolysis is between 15 and 30 kg/h, and the temperature inside the reactor ( 4 ) is between 150 and 250° C.

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Номер записи: 80
03-09-2020 дата публикации

Feed gas feeding system for propylene ammoxidation reactor

Номер: US20200276551A1
Автор: Le ZHAO, Lianghua Wu
Принадлежит: China Petroleum and Chemical Corp, Sinopec Shanghai Research Institute of Petrochemical Technology

The present invention provides a feed gas feeding system for a propylene ammoxidation reactor. The feed gas feeding system comprises a feed gas mixing system and a feed distributor. A propylene and ammonia mixed gas is mixed by the feed gas mixing system and then uniformly distributed in the propylene ammoxidation reactor by means of the feed distributor, an initial temperature T0 when the propylene and ammonia mixed gas enters the feed distributor being 10-220° C. The propylene and ammonia feed gas feeding system of the present invention for ammoxidation of propylene and the preparation of acrylonitrile prevents the temperature of a gas mixture at any position in the propylene and ammonia feed distributor from reaching a temperature at which ammonia decomposes into active nitrogen atoms, thereby reducing a risk of brittle nitriding fractures of the propylene and ammonia distributor.

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Номер записи: 81
03-09-2020 дата публикации

REACTOR FOR THE HYDROTHERMAL OXIDATION TREATMENT OF AN ORGANIC MATERIAL IN A REACTION MEDIUM

Номер: US20200276555A1
Автор: Leybros Antoine, Ruiz Jean-Christophe, TURC Hubert-Alexandre
Принадлежит:

A reactor for treating an organic material in a reaction medium by hydrothermal oxidation, comprising: a longitudinal body provided with a cold interface flange; an inner tube, positioned in the body to form an annular area and comprising a cold end and a hot end, the inner tube delimiting an internal reaction area in fluid communication with the annular area via an opening provided in the hot end of the inner tube; blades for stirring the reaction medium situated in the internal reaction area and mounted rotating about the longitudinal axis of the body; a sleeve for injecting organic material to be treated into the inner tube. The inner tube is mounted rotating on the cold flange, so as to be rotated about the longitudinal axis; the sleeve being positioned inside the inner tube, having a bore that defines a passage for the organic material to be treated to pass. 110-. (canceled)11. A reactor for hydrothermal oxidation treatment of an organic material in a reaction medium , comprising:a main body extending along a longitudinal axis, being provided at a first one of its ends with a cold interface flange, sealing means being disposed between the main body and the flange;an inner tube placed inside the main body so as to form an annular zone along the main body, the inner tube comprising a cold first end sealingly contacting with the cold flange, and a warm second end, the inner tube delimiting a reaction internal zone which is in fluid communication with the annular zone through at least one aperture disposed in the warm end of the inner tube;a stirring means for agitating the reaction mixture located in the reaction internal zone of the inner tube, the stirring means being rotatably mounted about the longitudinal axis;a refrigerating means for cooling an effluent located in the reaction internal zone of the inner tube before being discharged from the reactor through an outlet of the main body;an inlet for a water-oxidant mixture located on the side of the cold first ...

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Номер записи: 82
10-11-2016 дата публикации

System and Method for Catalyst Preparation

Номер: US20160325252A1
Автор: BENHAM Elizabeth A., GONZALES Rebecca A., MASINO Albert P., Muninger Randy S., YANG Qing
Принадлежит:

Techniques are provided for catalyst preparation. A system for catalyst preparation may include an agitator disposed inside a polymerization catalyst tank and configured to mix a polymerization catalyst and a solvent to generate a polymerization catalyst solution. The system may also include a heating system coupled to the polymerization catalyst tank and configured to maintain a temperature of the polymerization catalyst solution above a threshold. The system may also include a precontactor configured to receive feed streams comprising an activator and the polymerization catalyst solution from the polymerization catalyst tank to generate a catalyst complex. The system may also include a transfer line configured to transfer the catalyst complex from an outlet of the precontactor to a reactor. 120-. (canceled)21. A method for controlling a polymerization reactor system , the method comprising:(a) contacting a metallocene catalyst system comprising a metallocene compound with an olefin monomer and an optional olefin comonomer in a polymerization reactor within the reactor system to produce a polyolefin; subjecting a sample of the solution to a wavelength of light in an ultraviolet-visible spectrometer; and', 'measuring an absorbance of the sample and correlating the absorbance to determine the concentration of the metallocene compound in the solution; and, '(b) determining a concentration of the metallocene compound in a solution comprising the metallocene compound, wherein the concentration is determined by a method comprising the steps of(c) adjusting a flow rate of the metallocene compound into the polymerization reactor when the concentration of the metallocene compound in the solution has reached a predetermined level.22. The method of claim 21 , wherein the solution comprising the metallocene compound is a catalyst solution feed stream to a precontactor vessel.23. The method of claim 21 , wherein the solution comprising the metallocene compound is a metallocene ...

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Номер записи: 83
10-11-2016 дата публикации

METHOD FOR PRODUCING POLYAMIDES BY MEANS OF A SPRAY NOZZLE ARRANGEMENT FOR THE COLLISION OF SPRAY JETS

Номер: US20160325265A1
Автор: Goetz Alexander, Ostermann Rainer, Sack Heinrich, SIMON DIRK, Stammer Achim, ZHU Ning
Принадлежит: BASF SE

The invention relates to a method for producing polyamides by means of a spray nozzle arrangement for the collision of spray jets, comprising at least one spray nozzle forming a first spray jet having a first spray jet cross-sectional surface and a first spray jet longitudinal extension axis, and comprising a second spray jet forming a second spray jet having a second spray jet cross-sectional surface and a second spray jet longitudinal extension axis, wherein the first and second spray jets have a spray direction that is facing the gravitational field, and are arranged opposite one another such that in a spray direction facing the gravitational field, the formed spray jets collide in a collision area. The invention is characterized in that the angle between the first and the second spray jet is in the range of 5° to 170°, and that the first and second spray nozzles are arranged such that upon colliding, the first spray jet cross-sectional surface of the first spray jet forms an intersection with the second spray jet cross-sectional surface of the second spray jet. 115.-. (canceled)16. A method of producing polyamides with a spray nozzle arrangement for colliding spray jets , comprising the following steps of: the first and/or second fluid spray composition comprises one or more components capable of polyamide formation which are selected from: lactams, aminocarboxylic acids, aminocarboxamides, aminocarbonitriles, diamines, dicarboxylic acids, dicarboxylic acid/diamine salts, dinitriles and mixtures thereof,', 'in the event of an activated anionic lactam polymerization only one of the two fluid spray compositions comprises at least one activator and only the other comprises at least one catalyst,, 'a) providing a first fluid spray composition and a second fluid spray composition with the proviso that'}{'b': 1', '2', '1', '2', '1', '2', '1', '2, 'b) spraying either of the two fluid spray compositions through the first or second spray nozzle (D, D) to obtain a first ...

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Номер записи: 84
10-10-2019 дата публикации

One-step Dual Heater Based Flow Synthesis Setup for Synthesis of Inorganic Particles in Near Ambient Conditions

Номер: US20190308157A1
Автор: CHAUDHRY Aqif Anwar, IJAZ Kashif
Принадлежит:

A method for synthesis of inorganic nanoparticles is disclosed. This synthesis method is single step, based on two heaters and functions using near ambient conditions. This flow method can be used to synthesize a range of inorganic particles. Synthesis of stoichiometric and non-stoichiometric hydroxyapatite with ranging thermal stabilities has been shown in this application. These materials find wide applications as biomaterials, in the form of additives to polymer based composites, for bone filling applications and also as coatings on metallic substrates. 1. A system comprising:a first pump;a second pump;a T-piece reactor comprising a first input, a second input, and an output;a first heater comprising an input and an output; anda second heater comprising an input and an output,wherein;the first pump and the second pump are connected to the first and second inputs of the T-piece reactor,the output of the T-piece reactor is connected to the input of the first heater, andthe output of the first heater is connected to the input of the second heater.2. The system of wherein the first pump is configured to send a first solution to the T-piece reactor.3. The system of wherein the second pump is configured to send a second solution to the T-piece reactor.4. The system of wherein the T-piece reactor is configured such that the first solution reacts with the second solution in the T-piece reactor to form a reaction solution.5. The system of claim 4 , wherein T-piece reactor is configured to pass the reaction solution through the first heater.6. The system of claim 5 , wherein first heater is configured to pass the reaction solution to the second heater.7. The system of claim 6 , wherein the outlet of the second heater is configured to pass the reaction solution to a collection container in a continuous manner.8. The system of claim 7 , wherein the system claim 7 , the first solution claim 7 , and the second solution are configured to perform a continuous flow synthesis ...

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Номер записи: 85
01-10-2020 дата публикации

Shell-and-tube equipment with distribution device

Номер: US20200306711A1
Автор: Alberto GOZZINI
Принадлежит: Alfa Laval Olmi SpA

A shell-and-tube equipment has a cylindrical geometry and is arranged along a vertical axis. The shell-and-tube equipment comprises an upper chamber and a lower chamber connected to a common tube bundle on opposite sides. The upper chamber is provided with at least an inlet nozzle for inletting a first fluid. The tube bundle is surrounded by a shell provided with nozzles for inletting and outletting a second fluid which exchanges heat with the first fluid through the tube bundle. The upper chamber encloses at least a distribution device configured for uniformly delivering the first fluid towards the tube bundle. The distribution device comprises an annular channel which is arranged around the vertical axis and is in fluid communication with the inlet nozzle. The distribution device comprises a plurality of channel modules of circular trapezoid shape, tightly joined together at their respective vertical edges for forming the annular channel.

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Номер записи: 86
10-10-2019 дата публикации

CONTROL SYSTEM AND CONTROL METHOD FOR RECYCLING AND SMELTING CRUSHED SILICA FROM SILICON PLANTS

Номер: US20190308882A1
Автор: Yang Shi, Zhou Xu
Принадлежит:

A manufacturing system and method for recycling and smelting crushed silica from silicon plants, including a crushed silica storage device, granulator, submerged arc furnace, transfer device, forming device and cooling system. Firstly silicon waste is collected, then crushed silica is output to a granulator. The granulator mixes the waste irregular crushed silica with water, and granulates and produces small particles having an uniform grain size as the raw material for smelting. The raw material is smelted in the submerged arc furnace. The forming device evenly pours the silicon liquid into the cooling system according to a set flow rate. The silicon liquid is solidified to form silicon pellets, and then a lift system is used to lift the formed silicon pellets, wherein the silicon liquid poured into the cooling system has a uniform diameter. The system can rapidly and efficiently smelt the silicon waste from the silicon plants. 1. A control system for recycling and smelting crushed silica from silicon plants , comprising:a crushed silica storage device used for storing the crushed silica, and used as a raw material supplying device of the control system, conveying the crushed silica to a granulator by a conveying belt;the granulator mixing the crushed silica and water to form a first mixture, and kneading the first mixture to produce particles having an uniform grain size, then conveying the particles to a submerged arc furnace;the submerged arc furnace receiving granulated silicon particles, and smelting the granulated silicon particles to form silicon liquid;a transfer device transferring the smelted silicon liquid to a forming device;the forming device injecting the smelted silicon liquid into a cooling system according to a set grain size; andthe cooling systems solidifying the silicon liquid to form silicon pellets.2. The control system of claim 1 , wherein a voltage of the submerged arc furnace is 40-90V.3. The control system of claim 1 , wherein the transfer ...

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Номер записи: 87
10-10-2019 дата публикации

PROCESS AND APPARATUS FOR HYDROGENATION

Номер: US20190309230A1
Автор: HONKANEN Hanna, KURKIJÄRVI Antti, SUURONEN Mauri, Toppinen Sami, WAHLSTRÖM Jan
Принадлежит: Neste Oyj

The present disclosure relates to hydrogenation reactions of different fractions in oil refining. It also relates to a process device applicable thereto for hydrogenation of various feedstocks, such as arrangements during campaign changes. 1. A process for hydrogenation of a hydrocarbon stream containing olefinic compounds , aromatic compounds or a combination thereof , the method comprising:i) feeding the hydrocarbon stream and hydrogen into a first reaction zone of a hydrogenation process unit;ii) hydrogenating in the first reaction zone in a presence of a catalyst at least part of said aromatic compounds, olefinic compounds or combination thereof to produce a first intermediate;iii) cooling and separating said first intermediate into a first intermediate liquid stream and a first intermediate gas stream;iv) conducting the first intermediate gas stream to a second reaction zone of the hydrogenation process unit; a) an inlet of the first reaction zone as a liquid recycle stream in order to restrict a temperature rise in the first reaction zone to less than 60° C.; and to', 'b) a second reaction zone, wherein remaining aromatic compounds, olefinic compounds or combination thereof contained in said first intermediate liquid stream are hydrogenated with the first intermediate gas stream in a presence of a catalyst to produce a saturated product; or', 'c) a liquid bypass line, which bypasses the second reaction zone, wherein said first intermediate liquid stream containing a saturated product;, 'v) conducting said first intermediate liquid stream tovi) separating the saturated product obtained from b) or c) into a liquid product stream and a separated gas stream; andvii) recovering the liquid product stream from the hydrogenation process unit,wherein said steps from i) to vii) are within a high-pressure section and are conducted at a constant pressure selected from 2-8 MPa.2. The process according to claim 1 , wherein the feed hydrocarbon stream comprises:olefinic ...

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Номер записи: 88
08-11-2018 дата публикации

Hydrogen Generator System

Номер: US20180318782A1
Автор: Andrew Paul KELLY, Ken Wang
Принадлежит: Intelligent Energy Ltd

The disclosure relate to a hydrogen generator comprising a reactant cartridge and a reaction chamber. The reactant cartridge comprises a reactant reservoir comprising a first reactant for generating hydrogen gas; and an engagement mechanism configured to engage with a reaction chamber and enable the first reactant to pass from the reactant reservoir to the reaction chamber when the cartridge is engaged with the reaction chamber. The reaction chamber comprises: a reaction chamber for storing a second reactant; and an engagement mechanism configured to engage with the reactant cartridge and enable the first reactant to pass from the reactant cartridge to the reaction chamber when the cartridge is engaged with the reaction chamber.

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Номер записи: 89
08-10-2020 дата публикации

System and method for manufacturing ester-based composition

Номер: US20200317600A1
Автор: Chan Hyu JIN, Hyoung JUN, Hyun Kyu Kim, Jeong Ju Moon, Sung Kyu Lee
Принадлежит: LG Chem Ltd

The present disclosure relates to a method and a system for manufacturing an ester-based composition which are characterized in sequentially operating a plurality of batch reactors, and since an ester-based composition is semi-continuously manufactured, the productivity is high and the stability of a batch reactor is secured.

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Номер записи: 90
08-10-2020 дата публикации

DIFFUSER ASSEMBLIES AND CATALYTIC REACTORS COMPRISING THE SAME

Номер: US20200318519A1
Автор: Burtt Colby A., Buynitzky William D., DIFRANCESCO Chris E., Lyons Stephen M., SCHIRMER MARK L., TREFZGER Christian
Принадлежит:

Briefly, in one aspect, a catalytic assembly described herein comprises a module comprising at least one layer of structural catalyst bodies having an inlet face for receiving a gas stream. A diffuser assembly is arranged a distance of greater than 50 mm from the inlet face, the diffuser assembly including at least one diffuser element comprising a plurality of apertures, wherein a ratio of aperture length (L) in the gas stream flow direction to aperture hydraulic diameter (D) is less than 1. 1. A catalytic assembly comprising:a module comprising at least one layer of structural catalyst bodies, the layer having an inlet face for receiving a gas stream; and{'sub': 'a', 'a diffuser assembly arranged a distance of greater than 50 mm from the inlet face, the diffuser assembly including at least one diffuser element comprising a plurality of apertures, wherein a ratio of aperture length (L) in the gas stream flow direction to aperture hydraulic diameter (D) is less than 1.'}2. The catalytic assembly of claim 1 , wherein the distance from the diffuser assembly to the inlet face is at least 75 mm.3. The catalytic assembly of claim 1 , wherein the distance from the diffuser assembly to the inlet face is at least 100 mm.4. The catalytic assembly of claim 1 , wherein the distance from the diffuser assembly to the inlet face is 75-200 mm.5. The catalytic assembly of claim 1 , wherein L/D<0.5.6. The catalytic assembly of claim 1 , wherein the aperture hydraulic diameter (D) is greater than flow channel hydraulic diameter of the structural catalyst bodies.7. The catalytic assembly of claim 1 , wherein the aperture hydraulic diameter (D) is greater than 7 mm.8. The catalytic assembly of claim 1 , wherein the aperture hydraulic diameter (D) is greater than 9 mm.9. The catalytic assembly of claim 1 , the apertures are polygonal.10. The catalytic assembly of claim 1 , wherein the apertures are circular or elliptical.11. The catalytic assembly of claim 1 , wherein the aperture ...

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Номер записи: 91
24-10-2019 дата публикации

Tubular reactor polymerization initiator injector device, tubular reactor for continuous polymerization of olefins, and a process for production of polymers and copolymers of ethylene

Номер: US20190322771A1
Автор: Eduardo José DOTTI, Paulo Henrique Konat Gandolfi, Vitor Dal Bó Abella
Принадлежит: Braskem SA

The present invention refers, in its generality, to a tubular reactor for homo or copolymerization of olefins, with one of more initiator injection devices. The invention also refers to an initiator device in a process fluid stream in a reactor polymerization reactor, and to a process for the production of polymers and copolymers of ethylene, particularly low density polymers (LDPE), that use the said device.

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Номер записи: 92
01-12-2016 дата публикации

Adiabatic plug flow reactors and processes incorporating the same

Номер: US20160347692A1
Автор: Avani Maulik Patel, Debashis Chakraborty, Heinz Groenewald, Hua Bai, Juergen Eiffler, Kurt F. Hirsekorn, Manfred Kokott, Marcus Wobser, Max M. Tirtowidjojo, Thomas J. Parsons, Thomas U. Luebbe, William J. Kruper
Принадлежит: Blue Cube IP LLC

The present invention provides adiabatic plug flow reactors suitable for the production of chlorinated and/or fluorinated propene and higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes. The reactors comprise one or more designs that minimize the production of by-products at a desired conversion.

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Номер записи: 93
30-11-2017 дата публикации

CHEMICAL VAPOUR DEPOSITION REACTOR

Номер: US20170342594A1
Автор: Beaumont Bernard, Pourouchottamane Manivannane
Принадлежит: SAINT-GOBAIN LUMILOG

The invention concerns a reactor for chemical vapour deposition from first and second precursor gases, the reactor comprising: —a chamber including top and bottom walls and a side wall linking the top and bottom walls, —a support intended for receiving at least one substrate, mounted inside the chamber, and —at least one system for injecting precursor gases, the system comprising an injection head including at least one nozzle for supplying the first precursor gas () in a main direction of axis A-A′, the at least one nozzle including: a precursor gas supply conduit (), and an outlet member () generating a substantially annular vortex flow () around axis A-A′. 14142. A chemical vapor deposition reactor from first and second precursor gases ( , ) , the reactor comprising:{'b': 1', '11', '12', '13', '11', '12, 'an enclosure () including upper () and lower () walls and a side wall () connecting the upper () and lower () walls,'}{'b': 2', '21', '1, 'a support () intended to receive at least one substrate (), mounted inside the enclosure (), and'}{'b': 31', '32', '31', '32', '32', '41, 'claim-text': [{'b': '321', 'a precursor gas supply conduit (), and'}, {'b': 322', '44, 'an outlet member () dimensioned for generating a vortex flow () of a substantially annular shape around the axis A-A′.'}], 'at least one system (, ) for injecting precursor gases, the system (, ) including an injection head () including a plurality of first nozzles for supplying the first precursor gas () along a main direction of axis A-A′, one nozzle including2. The reactor according to wherein the outlet member comprises an upstream end facing the precursor gas supply conduit and a downstream end opposite to the upstream end along the main direction claim 1 , the sectional dimensions of the upstream end being less than the sectional dimensions of the downstream end.3. The reactor according to claim 1 , wherein the outlet member comprises a coaxial recess with the gas supply conduit.4. The reactor ...

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Номер записи: 94
29-11-2018 дата публикации

PROCESSES AND APPARATUS FOR INTRODUCING A GAS INTO A REACTOR

Номер: US20180339280A1
Автор: Clancy-Jundt Brian, Mauro de Feo Demian
Принадлежит: FLINT HILLS RESOURCES, LP

A method for producing a dehydrogenated product and a coked catalyst, then introducing an oxygen-containing fluid, combusting at least a portion of the coke disposed on the catalyst in the presence of the oxygen-containing fluid to produce a decoked catalyst. An apparatus for introducing fluid into a reactor, comprising a first inlet conduit configured to convey a first gas, a second inlet conduit configured to convey a second gas, and an outlet conduit configured to convey the first gas and the second gas into a reactor, wherein there is an acute angle between a longitudinal axes of the first inlet conduit and a longitudinal axis of the second inlet conduit and an obtuse angle between a longitudinal axis of the outlet conduit and the longitudinal axis of the second inlet conduit and a pre-distributor disposed, in one embodiment on the inner surface, within the first inlet conduit is disclosed. 1. A process for dehydrogenating an alkane , comprising:introducing an alkane into a reactor from an outlet conduit of an inlet assembly;contacting a catalyst within the reactor with the alkane to produce a dehydrogenated product comprising an alkene and a coked catalyst comprising coke disposed on the catalyst;separating the dehydrogenated product from the coked catalyst;introducing an oxygen-containing fluid into the reactor from the outlet conduit, wherein the oxygen-containing fluid has a velocity profile at an end of the outlet conduit coupled to the reactor, wherein the end of the outlet conduit coupled to the reactor has a radial distance from an inner surface thereof to a center thereof, and wherein a velocity maxima of the velocity profile at the end of the outlet conduit coupled to the reactor is at least 80% of the radial distance away from the inner surface thereof when a velocity of the oxygen-containing fluid is greater than or equal to 100 m/s, as determined using computational fluid dynamics modeling; andcombusting at least a portion of the coke disposed on ...

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Номер записи: 95
06-12-2018 дата публикации

METHOD FOR DESIGNING MULTI-VALVE UNI-DIRECTION BLOWDOWN SYSTEM FOR A HIGH PRESSURE TUBULAR REACTOR

Номер: US20180345238A1
Автор: Botros Kamal Kamel, Leung Teresa Yuk Woon, Moreton Ross Donald, Shaw Benjamin Milton
Принадлежит: NOVA CHEMICALS (INTERNATIONAL) S.A.

Provided herein is a unidirectional blow down system for a high-pressure tubular reactor with a hyper that minimizes the tube wall metal temperature during a decomposition event wherein the system prevents the reactor walls from reaching a temperature capable of causing the tube metal to austenize. Also provided are methods of designing and methods of operating a unidirectional blowdown system. 2. The blowdown system of wherein the inner diameter (ID) of the front emergency valve is smaller than the valve ID at the end of the reactor.3. The blowdown system of wherein the front emergency valve has an ID of from about 0.25 to about 0.5 inches.4. The blowdown system of wherein the front emergency valve has an ID of from about 0.3 to about 0.4 inches.5. The blowdown system of wherein the front emergency valve has an ID of 0.375 inches.6. The blowdown system of wherein the valve ID at the end of the reactor is from about 0.375 to about 2 inches.7. The blowdown system of wherein the valve ID at the end of the reactor is from about 1 to about 1.5 inches.8. The blowdown system of wherein the valve ID at the end of the reactor is about 1 inch.9. The blowdown system of wherein there is at least one additional valve between the front emergency valve and the valve at the end of the reactor.10. The blowdown system of wherein there is one additional valve with an ID of about 0.25-0.5 inches between the front emergency valve and the valve at the end of the reactor.11. The blowdown system of wherein the tubes of the tube reactor are low alloy carbon steel.12. The blowdown system of wherein the tubes of the tube reactor are low alloy carbon steel having a carbon content of from about 0.3 to about 0.4% carbon.13. The blowdown system of wherein the tubes of the tube reactor are Grade AISI 4333 tubes.14. The blowdown system of wherein the metal of the tube reactor has an austenization temperature between about 750° C. and about 850° C.15. The blowdown system of wherein the metal of the ...

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Номер записи: 96
29-10-2020 дата публикации

PROCESSES AND APPARATUS FOR INTRODUCING A GAS INTO A REACTOR

Номер: US20200338514A1
Автор: Clancy-Jundt Brian, Mauro de Feo Demian
Принадлежит: FLINT HILLS RESOURCES, LP

A method for producing a dehydrogenated product and a coked catalyst, then introducing an oxygen-containing fluid, combusting at least a portion of the coke disposed on the catalyst in the presence of the oxygen-containing fluid to produce a decoked catalyst. An apparatus for introducing fluid into a reactor, comprising a first inlet conduit configured to convey a first gas, a second inlet conduit configured to convey a second gas, and an outlet conduit configured to convey the first gas and the second gas into a reactor, wherein there is an acute angle between a longitudinal axes of the first inlet conduit and a longitudinal axis of the second inlet conduit and an obtuse angle between a longitudinal axis of the outlet conduit and the longitudinal axis of the second inlet conduit and a pre-distributor disposed, in one embodiment on the inner surface, within the first inlet conduit is disclosed. 1. An inlet assembly for introducing a fluid into a reactor , comprising:a first inlet conduit, a second inlet conduit, and an outlet conduit fluidly connected at a junction, wherein the first inlet conduit is configured to convey a first gas therethrough, the second inlet conduit is configured to convey a second gas therethrough, and the outlet conduit is configured to convey the first gas and the second gas therethrough and into a reactor, wherein there is an acute angle between a longitudinal axes of the first inlet conduit and a longitudinal axis of the second inlet conduit and an obtuse angle between a longitudinal axis of the outlet conduit and the longitudinal axis of the second inlet conduit; anda pre-distributor disposed within the first inlet conduit.2. The inlet assembly of claim 1 , wherein a cross-sectional area of the first inlet conduit at the junction is greater than a cross-sectional area of the second inlet conduit at the junction.3. The inlet assembly of claim 1 , further comprising a third inlet conduit fluidly connected to the junction and configured to ...

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Номер записи: 97
29-10-2020 дата публикации

Process and reactor for formation and for catalytic conversion of a reactant mixture

Номер: US20200338515A1
Автор: Anton Wellenhofer, Celine Pichler, Helmut Fritz, Martin Schubert, Mathieu Zellhuber, Robert Birk
Принадлежит: Linde GmbH

A process for forming and for catalytically converting an ignitable gas mixture is proposed, in which at least a first gas or gas mixture comprising oxygen and a second gas or gas mixture comprising one or more oxidizable compounds are mixed to give the ignitable gas mixture, where the ignitable gas mixture is supplied to a reaction zone (12) of a reactor (1). The first gas or gas mixture and the second gas or gas mixture are fed into a mixing chamber (11) having a boundary wall (13) provided with a number of passages (131), where the first gas or gas mixture is fed into the mixing chamber (11) through the passages (131) in the boundary wall (13) and where the second gas or gas mixture is fed into the mixing chamber (11) by means of one or more feed conduits (14) which have feed orifices (141) and extend into the mixing chamber (11). The present invention likewise provides a corresponding reactor (1).

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Номер записи: 98
05-11-2020 дата публикации

High Pressure Polyethylene Product Cooling

Номер: US20200347163A1
Автор: Clymans Paul J., Dewitte Cindy, Lammens Henri A.
Принадлежит:

This disclosure relates to systems and processes for cooling polymer product mixtures manufactured at high pressure. The processes of the invention involve cooling and then subsequently reducing the pressure of the product mixture from the reactor. In the systems of the invention, a product cooler is located downstream of the high pressure reactor and upstream of a high pressure let down valve. 1. A process for producing an ethylene-based polymer , the process comprising:a. compressing ethylene monomer to a pressure of at least 122 MPa;b. in a reactor, forming a product mixture comprising an ethylene-based polymer from the compressed ethylene monomer; andc. cooling the product mixture in a product cooler located downstream of the high pressure reactor and subsequently reducing the pressure of the product mixture in a high-pressure let down valve downstream of the product cooler, wherein the product cooler has a length of at least 200 m and an internal diameter of at least 60 mm, and wherein the velocity of the product mixture in the product cooler is at least 20 m/s.2. The process of claim 1 , further comprising contacting the ethylene monomer and catalyst with a vinyl acetate comonomer.3. The process of claim 1 , wherein the compressing is accomplished using a primary compressor and a secondary compressor claim 1 , and further comprising feeding the entire output of the primary compressor to the secondary compressor.4. The process of claim 1 , comprising cooling the product mixture by at least about 30° C.5. The process of claim 1 , comprising cooling the product mixture to less than 200° C.6. The process of claim 1 , wherein the product mixture's pressure is reduced by at least about 50 MPa in the high-pressure let down valve.7. The process of claim 1 , further comprising insulating a pipe transferring the product mixture from an exit of the reactor.8. The process of claim 1 , further comprising controlling the temperature to which the product mixture is cooled in ...

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Номер записи: 99
05-11-2020 дата публикации

DEVICE FOR POWDER METERING FOR CHEMICAL PRODUCTION PROCESSES UNDER CLEAN-ROOM CONDITIONS, USE THEREOF AND METERED ADDITION METHOD

Номер: US20200348161A1
Автор: Popova Irene, Rueckl Christian, Stahl Juerg
Принадлежит:

Device for metering powder, in particular in clean-rooms, which includes a vessel containing powder and a sealing head with a septum for the vessel, wherein the sealing head is connectable powder-tight with the vessel and the septum powder-tight with the sealing head and the device further includes a vessel holder, which serves to hold the sealing head of the vessel, and the vessel with its opening points downwards, so that the powder can flow out of the vessel, wherein a gap is provided between the sealing head and a holding bowl of the vessel holder, in which a gas flow between the holding bowl and the sealing head can be created. The invention also relates to a use of the device and a metered addition method. 1. Device for metering powder , which comprises a vessel containing powder and a sealing head with a septum for the vessel , and the vessel points downwards with its opening , so that the powder can flow out of the vessel , and the device further has a vessel holder , which serves to hold the sealing head of the vessel , wherein the vessel holder has a cannula for piercing the septum and a gas for fluidizing the downward-flowing powder is fed to the cannula , and further a metering system is provided , which is based on the filling of a volume in a connecting hose separable by valves , wherein the bulk density of the powder in the connecting hose is kept essentially constant by a gas flow varying with time during the fluidization.2. Device according to claim 1 , wherein the gas volume of the fluidization amounts to between 0.3 and 3.0 times claim 1 , preferably between 0.5 and 2.0 times the separable volume in the connecting hose and/or the gas flow is greatest at the end of the fluidization.3. Device according to claim 1 , wherein the sealing head is connectable powder-tight with the vessel and the septum with the sealing head claim 1 , and wherein a gap is present between the sealing head and a holding bowl of the vessel holder claim 1 , in which a gas ...

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Номер записи: 100