Настройки

Укажите год
-

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

Подробнее
-

Мониторинг СМИ

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

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 1633. Отображено 100.
19-01-2012 дата публикации

Multiphase contact and distribution apparatus for hydroprocessing

Номер: US20120014847A1
Автор: Abdenour Kemoun, Craig Boyak, Krishniah Parimi, Ralph E. Killen, Steve Souers, Steven X. Song, Zackory Akin
Принадлежит: Chevron USA Inc

Systems and apparatus for mixing, cooling, and distributing multiphase fluid mixtures within a reactor, wherein reactor internal apparatus of the present invention provides not only improved fluid mixing and distribution to each underlying catalyst bed surface, but also offers other advantages including: decreased mixing tray height; easier maintenance, assembly and disassembly; and decreased amounts of fabrication material. In an embodiment, fluid may be evenly distributed to a catalyst bed from a fluid distribution unit comprising a nozzle tray including a plurality of nozzles, wherein the nozzles include at least one liquid inlet disposed tangentially to an inner surface of the nozzle.

Подробнее
Номер записи: 1
31-05-2012 дата публикации

Hydrogenation Process for Fluorocarbons

Номер: US20120134892A1
Автор: Gus Cerri, Haluk Kopkalli, Hsueh Sung Harry Tung, Orlando George Rodrigues, Stephen A. Cottrell, Yuon Chiu
Принадлежит: Honeywell International Inc

Disclosed is a process and apparatus for the catalytic hydrogenation of fluoro-olefins to fluorocarbons where the reaction is carried out in a multi-tube shell and tube reactor. Reactions involving hydrogenation of fluoro-olefins are typically exothermic. In commercial processes where a fluoro-olefin C n H 2n-x F x to C n H 2n-x2 F x is hydrogenated (e.g., hexafluoropropylene to 236ea, 1225ye to 245eb, and the like), inadequate management or control of heat removal may induce excess hydrogenation, decomposition and hot spots resulting in reduced yields and potential safety issues. In the hydrogenation of fluoro-olefins, it is therefore necessary to control the reaction temperature as precisely as practical to overcome challenges associated with heat management and safety.

Подробнее
Номер записи: 2
20-09-2012 дата публикации

Split Flow Contactor

Номер: US20120237434A1
Автор: David P. Mann, Kenneth L. Blanchard
Принадлежит: Kellogg Brown and Root LLC

Systems and methods for contacting a liquid, gas, and/or a multi-phase mixture with particulate solids. The system can include a body having a first head and a second head disposed thereon. Two or more discrete fixed beds can be disposed across a cross-section of the body. One or more unobstructed fluid flow paths can bypass each fixed bed, and one or more baffles can be disposed between the fixed beds.

Подробнее
Номер записи: 3
25-10-2012 дата публикации

Method and apparatus for catalytic and thermochemical reactions

Номер: US20120269709A1
Автор: Hristo Sapoundjiev
Принадлежит: Canada Minister of Natural Resources

The invention relates to a hybrid reverse flow catalytic apparatus having two reaction zones: a homogeneous reaction zone in porous ceramic and a heterogeneous reaction zone with catalyst, arranged in two different catalyst beds. A first catalytic bed located in a central region of the reactor is provided with a low activity catalyst and a second catalyst bed located in a peripheral region of the reactor is provided with a high activity catalyst. The provision of two catalyst beds containing different catalysts reduces the effect of radial temperature gradients in the reactor and improves the overall efficiency of the reactor. The invention also relates to method of performing catalytic and thermochemical reactions in said apparatus.

Подробнее
Номер записи: 4
03-10-2013 дата публикации

Wire standoffs for stackable structural reactors

Номер: US20130259767A1
Автор: Brian L. Davis, Joseph W. WHITTENBERGER, William A. Whittenberger
Принадлежит: Catacel Corp

A wire standoff suitable for use in a tubular reactor, such as a reformer, is described. The wire standoff includes a portion or segment positioned between an outer reactor tube and one or more reactor components located within the tube. The reactor components and the outer tube are prevented from coming into directed contact with one another by the positioning of the wire standoff. The wire standoff can be secured to a reactor component at one of its ends or to a washer located between stacked reactor components. Prevention of the reactor components from contact with the outer tube promotes fluid flow through the reactor and can enhance heat transfer and reactor efficiency for carrying out catalytic reactions.

Подробнее
Номер записи: 5
24-10-2013 дата публикации

Tube bundle reactor having a structured packing

Номер: US20130280148A1
Автор: Christoph Steden, Dominic Walter, Frank Castillo-Welter, Rudolf Zeyen
Принадлежит: LURGI GMBH

A tubular reactor for carrying out a catalytically supported, homogeneous chemical reaction in the gas phase at an elevated temperature and a subsequent cooling, wherein the reactor is arranged upright, and therefore the tubes extend vertically and the as flows downward through the tubes. The tubes are filled with a catalyst bed in the upper part thereof extending in the reaction zone of the reactor and are filled with a structured packing in the lower part, the cooling zone of the reactor.

Подробнее
Номер записи: 6
26-12-2013 дата публикации

Apparatus for Retaining Solid Material in a Radial Flow Reactor and Method of Making

Номер: US20130340229A1
Автор: Michael J. Vetter, Paul A. Sechrist, Quan Yuan
Принадлежит: UOP LLC

An apparatus for use in radial flow reactors is presented. The apparatus includes a first partition and a second partition with support members coupled therebetween. The first partition include a first opening and a second opening to allow the passage of fluid therethrough. A baffle extends into a flow channel formed by adjacent support members to obstruct an upper or lower portion of the first opening to interrupt a portion of the fluid flow therethrough.

Подробнее
Номер записи: 7
06-03-2014 дата публикации

Fluid treatment apparatus

Номер: US20140061027A1
Автор: Graham Tyrie, Neil Polwart, Steve Barfield
Принадлежит: Albagaia Ltd

A fluid treatment apparatus comprising: a reactor vessel defining a chamber and having an inlet and an outlet to allow fluid to flow through the chamber; a UV light source adapted to transmit light within the chamber; and a plurality of catalyst members comprising a catalytic outer surface, the catalyst members being freely contained within the chamber, wherein the apparatus is adapted to cause the catalyst members to move around within the chamber as fluid flows through the chamber.

Подробнее
Номер записи: 8
07-01-2021 дата публикации

Bi-Modal Radial Flow Reactor

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

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

Подробнее
Номер записи: 9
05-01-2017 дата публикации

Fluid Solids Contacting Device

Номер: US20170001163A1
Автор: Pretz Matthew T., Sandoval Fermin A., Shaw Don F.
Принадлежит:

A fluid solids contacting device comprising a vessel; one or more grid structures comprising two or more levels, wherein each level comprises a plurality of grid assembly sections; a base formed from structural members used to support the multi-tiered structure; and three or more chairs attached to an inside surface of the vessel and spaced apart to support the base; and wherein the base is supported by the chairs is provided. 1. A fluid solids contacting device comprising:a vessel;a grid structure comprising one or more grid levels, wherein each grid level comprises a plurality of grid assembly sections;a base formed from structural members and on which the grid structure is supported; andthree or more chairs attached to an inside surface of the vessel and spaced apart to support the base; andwherein the base is supported by the chairs.2. The fluid solids contacting device according to claim 1 , wherein the base is formed from I-beams and has a central portion which is a closed geometric shape and three or more arms attached at one end to the central portion claim 1 , wherein the arms are spaced substantially at substantially equal distances around a perimeter of the central portion.3. The fluid solids contacting device according to claim 1 , wherein each grid assembly section comprises a bottom platform claim 1 , a frame structure extending upward from two opposing sides of the bottom platform claim 1 , wherein each frame structure comprises an optional diagonal support and an optional top guide section configured to accept a bottom platform of a grid assembly section.4. The fluid solids contacting device according to claim 3 , wherein the central portion of the base is circular.5. The fluid solids contacting device according to claim 3 , wherein the bottom platform comprises one or more of the group consisting of subway grating claim 3 , chevrons a packing structures or other structure that obstructs an open area.6. The fluid solids contacting device according to ...

Подробнее
Номер записи: 10
10-01-2019 дата публикации

TUBE ISOTHERMAL CATALYTIC REACTOR

Номер: US20190009237A1
Автор: Rizzi Enrico
Принадлежит: Casale SA

Vertical reactor () for chemical reactions, comprising a tube heat exchanger () immersed in a catalytic bed (), wherein said tube exchanger () comprises a plurality of straight tube bundles () with respective tube plates for feeding () and collecting () the heat exchange fluid, and wherein the tube bundles and the respective tube plates are vertically staggered so as to allow access to the shell side. 1. A vertical chemical reactor comprising at least a catalytic bed and a tube heat exchanger immersed in said catalytic bed and fed with a heat exchange fluid , wherein:said tube exchanger comprises a plurality of straight tube bundles, each tube bundle having a respective feed tube plate and a respective collection tube plate for the fluid,wherein said plurality of tube bundles comprises at least a first set of tube bundles arranged at a first height inside the reactor and a second set of tube bundles arranged at a second height inside the reactor, the bundles of the first set and the second set being alternated so that each tube bundle is staggered vertically with respect to the adjacent bundles,wherein said tube plates are shaped as circular sectors or ring sectors and each one of said sectors extend substantially along the full radial extension of said catalytic bed.2. The reactor according to claim 1 , wherein said tube plates have a surface of interface with the tubes claim 1 , which is flat.3. The reactor according to claim 1 , wherein the free spaces between adjacent tube plates claim 1 , due to the vertically staggered arrangement claim 1 , define access points to the reactor zone containing the catalytic bed claim 1 , which can be used for loading and unloading catalyst.4. The reactor according to claim 1 , wherein the tube plates claim 1 , viewed in cross-section claim 1 , cover the entire cross-section of the catalytic bed.5. The reactor according to claim 1 , wherein the tube bundles comprise straight tubes having the same length.6. The reactor according ...

Подробнее
Номер записи: 11
09-01-2020 дата публикации

FLOW-PROMOTING DEVICE, A REACTOR ARRANGEMENT AND THE USE OF SUCH FLOW-PROMOTING DEVICE

Номер: US20200009519A1
Автор: Byström Emil, IRGUM Knut, LÖFGREN Erik, Öberg Christopher
Принадлежит:

The invention refers to a flow-promoting device (″) for performing a biological or chemical transformation, or physical or chemical trapping from, or release of agents to, a fluidic medium. The flow-promoting device (″) comprises a ferromagnetic material () and a retaining structure (″), the retaining structure having a compartment (″) defined by a permeable material (″). The retaining structure (″) comprises a top wall (″) and a circumferential side wall (″), wherein the top wall (″) and the circumferential side wall (″) is formed mainly by said permeable material (″). The compartment (″) of the retaining structure (″) is arranged to contain at least one fluid-permeable solid reaction member. 1. A flow-promoting device for performing a biological or chemical transformation , or physical or chemical trapping from , or release of agents to , a fluidic medium , whereinsaid flow-promoting device comprising a ferromagnetic material and a retaining structure, the retaining structure having a compartment defined by a permeable material, whereinthe retaining structure comprises a top wall and a circumferential side wall, wherein the top wall and the circumferential side wall is formed mainly by said permeable material, andthe compartment of the retaining structure is arranged to contain at least one fluid-permeable solid reaction member, wherebywhen the flow-promoting device is submerged into a fluidic medium and the flow-promoting device is subjected to an alternating magnetic field, the flow-promoting device is set to rotate, thereby causing a flow of fluidic medium into and through the compartment via said permeable material.2. The flow-promoting device according to claim 1 , wherein the top wall has a continuous extension across its full surface extension and does not comprise any central inlet opening.3. The flow-promoting device according to claim 1 , wherein the permeable material is a mesh material claim 1 , said mesh material having an inherent stiffness thereby ...

Подробнее
Номер записи: 12
19-01-2017 дата публикации

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

Номер: US20170014791A1
Автор: LAMBERT Fabian
Принадлежит: AXENS

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

Подробнее
Номер записи: 13
21-01-2016 дата публикации

REACTORS, SYSTEMS, AND METHODS FOR FORMING SOLID PRODUCTS

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

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

Подробнее
Номер записи: 14
17-01-2019 дата публикации

SYSTEMS AND METHODS FOR IMPROVING FLOW IN RADIAL FLOW REACTOR

Номер: US20190015807A1
Автор: EBERHARDT Eugene, HILLENBURG Russell, HUTCHINSON Matthew, LAMBERT Fabian, LE-GOFF Pierre-Yves
Принадлежит:

A scallop, center pipe, and outer basket for use in a radial flow reactor are provided. Each of the scallop, the center pipe, and the outer basket is formed of an elongated conduit having a top end and an opposing bottom end, and a plurality of openings formed in the elongated conduit through a thickness thereof. A diameter of the plurality of openings progressively increases or decreases from the top end to the opposing bottom end of the elongated conduit so as to allow a feedstock to flow radially out through the plurality of openings on the scallop or outer basket, or to allow a feedstock to flow uniformly into the center pipe through the plurality of openings. A system utilizing the center pipe together with either the scallop or the outer basket is also provided. 1. A scallop for use in a radial flow reactor , comprising:an elongated conduit having a top end and an opposing bottom end and a rounded distribution side;a plurality of openings formed in the elongated conduit through a thickness thereof,wherein a diameter of the plurality of openings progressively increases or decreases from the top end to the opposing bottom end of the elongated conduit so as to allow a feedstock to flow uniformly out of the scallop through the plurality of openings; anda profile wire scallop overlay positioned on the rounded distribution side of the elongated conduit to prevent catalyst particles from flowing into the scallop.2. The scallop of claim 1 , wherein the plurality of openings are generally circular claim 1 , square claim 1 , rectangular claim 1 , triangular claim 1 , oval claim 1 , or oblong in shape.3. The scallop of claim 1 , wherein the elongated conduit is formed of stainless steel.4. The scallop of claim 1 , wherein the elongated conduit has a back side and with the rounded distribution side forms a “D”-shaped cross section.5. (canceled)6. The scallop of claim 4 , wherein the radial flow reactor includes a reactor vessel claim 4 , and the back side of the elongated ...

Подробнее
Номер записи: 15
16-01-2020 дата публикации

Cylindrical Wall for Filtering Solid Particles in a Fluid

Номер: US20200016559A1
Автор: Allen Matthew, Nascimento Pedro, Selmen Arnaud
Принадлежит:

A cylindrical wall () for filtering solid particles in a fluid, through which a fluid is likely to circulate, this wall comprising 114.-. (canceled)15. A cylindrical wall for filtering solid particles in a fluid , through which this fluid is to circulate , this wall comprisingat least one perforated plate having a finite radius of curvature, andat least one grating element superposed on this perforated plate, this grating element comprising a plurality of rigid wires extending in a longitudinal direction and positioned adjacent to one another in order to filter the solid particles,characterized in thatthe grating element is arranged for the wires to be secured to one another only by means of links between adjacent wires, each link between two adjacent wires occupying only a portion of the length of said wires, and having a thickness less than or equal to the thickness of these wires in proximity to this link.16. The wall as claimed in claim 15 , whereineach link between two wires extends radially between an inner link end facing the perforated plate and an outer link end,in proximity to this link, each of these two wires extends radially between an inner wire end intended to be facing the perforated plate and an outer wire end,characterized in that,for at least one link between two wires, the outer end of said link is within the outer wire ends of said two adjacent wires, such that these two wires and this link define a groove forming a passage between the spaces between these wires on either side of this link.17. The wall as claimed in claim 15 , wherein at least one wire has claim 15 , over all of its length claim 15 , a section whose width claim 15 , in the tangential direction claim 15 , is smaller at a first end of wire section facing the perforated plate than at a second end of wire section opposite this first end.18. The wall as claimed in claim 15 , wherein claim 15 , for at least one wire secured to a first and a second adjacent wires situated on either ...

Подробнее
Номер записи: 16
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.

Подробнее
Номер записи: 17
26-01-2017 дата публикации

Catalyst Reactor Basket

Номер: US20170021320A1
Автор: Al-Khaldi Salman J., KOSEOGLU Omer Refa
Принадлежит: Saudi Arabian Oil Company

A catalyst reactor basket is provided that includes an outer side wall extending along the outer circumferential periphery and an inner side wall disposed within the outer side wall. An aperture is sized and shaped to allow a fluid to flow axially with respect to the basket. First and second covers are disposed on opposite ends of the outer side wall and inner side wall and a dividing wall is disposed between the first and second covers. The dividing wall defines a first and second chamber within the inner volume of the basket. A plurality of partitions are disposed within the first and second chambers. The plurality of partitions define a plurality of compartments within the first and second chambers, each compartment being sized and shaped to receive a catalyst. 111-. (canceled)12. A catalyst reactor basket arranged to receive a combination of catalysts in separate chambers , comprising:an outer side wall extending along the outer periphery of the basket and extending to define an inner volume of the basket;an inner side wall disposed within the outer side wall, the inner side wall extending to define an aperture that defines a inner boundary of the volume of the basket, the aperture being sized and shaped to allow a fluid to flow axially with respect to the basket;first and second covers disposed on opposite ends of the outer side wall and inner side wall, the first and second covers defining respective ends of the inner volume of the basket, at least a portion of the first and second covers being fluid permeable; anda dividing wall disposed between the first and second covers, the dividing wall defining a first and second chamber within the inner volume of the basket, at least a portion of the dividing wall being fluid permeable, wherein each of the first and second chambers being sized to receive a respective catalyst so as to enable a two-stage reaction in a single pass of the fluid in the axial direction.13. The catalyst reactor basket as in claim 12 , ...

Подробнее
Номер записи: 18
23-01-2020 дата публикации

Cover system for a solid particle lining and reactor comprising such a system

Номер: US20200023329A1
Автор: Bernard Poussin
Принадлежит: Crealyst Group SAS

The invention relates to a cover system ( 5 ) for a solid particle lining ( 3 ) comprising an articulated structure ( 11 ) and an annular casing ( 13 ) covering the articulated structure ( 11 ), the casing ( 13 ) being formed by metal plates ( 16, 17 ) sealingly mounted so as to be movable relative to each other, the articulated structure ( 11 ) having metal skirts ( 31 ) forming articulated concentric circles ( 33 ) for supporting the plates ( 16, 17 ) of the casing ( 13 ) and adapting to the deformations of the lining ( 3 ), and metal elements ( 35 ) forming articulated spacers ( 37 ) making it possible to maintain a spacing between the articulated concentric circles ( 33 ) and to adapt to the deformations of the lining ( 3 ).

Подробнее
Номер записи: 19
23-01-2020 дата публикации

AXIAL-RADIAL FLOW CATALYTIC CHEMICAL REACTOR WITH TWO LAYERS OF CATALYST

Номер: US20200023330A1
Автор: Rizzi Enrico
Принадлежит: Casale SA

Axial-radial flow reactor comprising a catalytic bed () of a hollow cylindrical shape, having a vertical axis (), a base (), a radial gas inlet section (b), an axial gas inlet section () and a radial gas outlet section (b), wherein the catalytic bed () comprises: a first cylindrical annular region () containing a layer of a first catalyst (A) and a layer of a second catalyst (B), the layer of the first catalyst being above the layer of the second catalyst; a second cylindrical annular region () coaxial to the first annular region and containing only the first catalyst (A). 1. A catalytic reactor adapted to process a gas flow by sequential passage through a first catalyst and a second catalyst ,said reactor comprising a catalytic bed of a hollow cylindrical shape, having a vertical axis, a base, a radial gas inlet section, an axial gas inlet section and a radial gas outlet section, arranged to determine an axial-radial flow through the catalytic bed, the axial inlet section being at an upper end of the catalytic bed;wherein said catalytic bed comprises:a first cylindrical annular portion extending from said base of the catalytic bed to the axial inlet section, and containing only the first catalyst;a second cylindrical annular portion extending from said base of the catalytic bed to the axial inlet section, said second annular portion containing a layer of said first catalyst and a layer of said second catalyst, the layer of the first catalyst being above the layer of the second catalyst, and said first annular portion and second annular portion being arranged coaxially one around the other.2. The reactor according to claim 1 , wherein the first catalyst is intended to catalyse a first chemical reaction and the second catalyst is intended to catalyse a second reaction claim 1 , said first reaction and second reaction being different.3. The reactor according to claim 1 , wherein a boundary between said first annular portion and said second annular portion is a ...

Подробнее
Номер записи: 20
04-02-2016 дата публикации

Random ring packing for biomass digester

Номер: US20160031774A1
Автор: Joseph Broun Powell, Ye-Mon Chen
Принадлежит: Shell Oil Co

A method comprises introducing cellulosic biomass solids to a digester comprising a reactor, gas feed line, biomass feed system, fluid circulation system including a fluid inlet, a pump, and an injector, a screen positioned within the reactor and defining a lower zone therebelow, and a bed of reactor packing material resting on the screen and defining thereby a packed zone; providing a liquid phase digestion medium containing a slurry catalyst in the digester, the catalyst being capable of activating molecular hydrogen; circulating the liquid phase digestion medium through the fluid circulation system; supplying an upwardly directed flow of molecular hydrogen through the cellulosic biomass solids; and maintaining the cellulosic biomass solids and slurry catalyst at a temperature sufficient to cause digestion of cellulosic biomass solids into an alcoholic component.

Подробнее
Номер записи: 21
16-02-2017 дата публикации

REACTORS AND METHODS FOR PRODUCING SOLID CARBON MATERIALS

Номер: US20170043310A1
Автор: Noyes Dallas B.
Принадлежит: Seerstone LLC

A reactor for producing a solid carbon material comprising at least one reaction chamber configured to produce a solid carbon material and water vapor through a reduction reaction between at least one carbon oxide and at least one gaseous reducing material in the presence of at least one catalyst material. Additional reactors, and related methods of producing a solid carbon material, and of forming a reactor for producing a solid carbon material are also described. 1. A reactor for producing a solid carbon material , comprising:at least one reaction chamber configured to produce a solid carbon material and water vapor through a reduction reaction between at least one carbon oxide and at least one gaseous reducing material in the presence of at least one catalyst material structure comprising a catalyst material at least partially extending through the at least one reaction chamber;at least one cooling chamber operatively communicating with the at least one reaction chamber and configured to condense the water vapor produced in the at least one reaction chamber; andat least one conveying mechanism configured to transport the at least one catalyst material structure through the at least one reaction chamber.2. The reactor of claim 1 , wherein the at least one reaction chamber is configured to produce the solid carbon material through at least one of a Bosch reaction claim 1 , a Boudouard reaction claim 1 , and a methane reduction reaction.3. The reactor of claim 1 , wherein the at least one reaction chamber is configured to withstand an operating temperature greater than or equal to about 450° C.4. (canceled)5. The reactor of claim 1 , wherein the at least one cooling chamber is configured to have an operating temperature of less than or equal to about 50° C.6. The reactor of claim 1 , further comprising a heat exchange zone operatively associated with each of at least one effluent gas line and at least one return gas line extending between the at least one reaction ...

Подробнее
Номер записи: 22
22-05-2014 дата публикации

Counter-Current Fluidized Bed Reactor for the Dehydrogenation of Olefins

Номер: US20140140895A1
Автор: Lev Davydov, Paolo Palmas, Wolfgang A. Spieker
Принадлежит: UOP LLC

A process and apparatus for the dehydrogenation of paraffins is presented. The process utilizes a reactor that includes a slower flow of catalyst through the reactor, with a counter current flow of gas through the catalyst bed. The catalyst is regenerated and distributed over the top of the catalyst bed, and travels through the bed with the aid of reactor internals to limit backmixing of the catalyst.

Подробнее
Номер записи: 23
17-03-2022 дата публикации

UPFLOW REACTOR

Номер: US20220080375A1
Автор: CUI Guoying, GUAN Minghua, Jiang Yang, RUAN Zonglin, WANG Haochen, YANG Xiuna, Zhou Jiawen
Принадлежит:

An upflow reactor (), comprising a housing (), a catalyst bed layer () and a pressing device (). The housing () is internally provided with a reaction chamber (), a reaction material inlet () and a reaction material outlet () which are in communication with the reaction chamber () are provided on the housing (); the catalyst bed layer () is provided within the reaction chamber (), the pressing device () is provided within the reaction chamber () and located above the catalyst bed layer (), and at least a part of the pressing device () is provided to be movable up and down, so that the at least a part of the pressing device () can be pressed against the catalyst bed layer (). 1. An upflow reactor , comprising:a housing provided with a reaction chamber therein, and provided with a reaction material inlet and a reaction material outlet thereon, which are in communication with the reaction chamber;a catalyst bed layer arranged in the reaction chamber; anda pressing device arranged in the reaction chamber and located above the catalyst bed layer, wherein at least a part of the pressing device is arranged to be movable up and down, so that the at least a part of the pressing device is able to be pressed against the catalyst bed layer.2. The upflow reactor of claim 1 , wherein the upflow reactor comprises a plurality of catalyst bed layers and a plurality of pressing devices claim 1 , the plurality of catalyst bed layers and the plurality of pressing devices are disposed alternately in the vertical direction claim 1 , and each of the pressing devices is able to be pressed against one of the catalyst bed layers; optionally claim 1 , the plurality of catalyst bed layers are in height incremented in the material feeding direction.3. The upflow reactor of claim 1 , wherein the catalyst bed layer comprises an upper catalyst section and a lower catalyst section claim 1 , wherein the upper catalyst section is positioned above the lower catalyst section claim 1 , and the pressing ...

Подробнее
Номер записи: 24
10-03-2016 дата публикации

METHOD FOR PRE-REFORMING HYDROCARBONS

Номер: US20160068391A1
Автор: Hackel Philipp Marius, HUBEL Mirko, WOLF Ulrich
Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

There is proposed a method for pre-reforming a hydrocarbonaceous feed stream into a pre-reforming product containing carbon oxides, hydrogen and hydrocarbons, in which the adiabatically operated pre-reforming reactor comprises at least two reaction zones designed as fixed beds in a common reactor vessel, which are in fluid connection with each other and are filled with beds of granular, nickel-containing catalyst active for pre-reforming, wherein the first reaction zone in flow direction is filled with a catalyst active for high-temperature pre-reforming and the last reaction zone in flow direction is filled with a catalyst active for low-temperature pre-reforming. 111-. (canceled)12. A method for pre-reforming a hydrocarbonaceous feed stream into a pre-reforming product containing carbon oxides , hydrogen and hydrocarbons , the method comprising the step of introducing the hydrocarbonaceous feed stream into a multistage , adiabatically operated pre-reforming reactor under pre-reforming conditions to obtain a pre-reforming product , wherein the pre-reforming reactor is a shaft reactor , wherein the pre-reforming reactor comprises at least two reaction zones designed as fixed beds in a common reactor vessel , which are in fluid connection with each other and are filled with beds of granular , nickel-containing catalyst active for the pre-reforming , wherein the first reaction zone in flow direction is filled with a catalyst active for high-temperature pre-reforming and the last reaction zone in flow direction is filled with a catalyst active for low-temperature pre-reforming.13. The method according to claim 12 , wherein the hydrocarbonaceous feed stream comprises methane and C hydrocarbons claim 12 , wherein the pre-reforming product has a reduced amount of C hydrocarbons and an increased amount of methane as compared to the hydrocarbonaceous feed stream.14. The method according to claim 12 , wherein the hydrocarbonaceous feed stream comprises natural gas with a ...

Подробнее
Номер записи: 25
09-03-2017 дата публикации

REACTOR FOR A CATALYTIC PROCESS

Номер: US20170065955A1
Автор: Bergstrom Jesper
Принадлежит: Haldor Topsoe A/S

A reactor for a catalytic process comprising one or more catalyst beds has catalyst bed supports constructed as a grid comprising a plurality of cassettes (), which are covered with easily removable screens (). The down-time and service costs for the reactor are thereby lowered. 1. Reactor for a catalytic process with one or more catalyst beds of catalyst pellets , comprising a bottom support for each of said catalyst beds , the support is constructed as a grid comprising a plurality of cassettes , each cassette is covered by a permeable screen with apertures large enough to allow flow through of process fluid , but small enough to retain the catalyst pellets , wherein said screen is removable fastened to said cassette.2. Reactor according to claim 1 , wherein the apertures of the screen each has an area of between 500 mmand 0.1 mm.3. Reactor according to claim 1 , wherein the apertures of the screen each has an area of between 100 mmand 1 mm.4. Reactor according to claim 1 , wherein the screen is made by woven wire mesh.5. Reactor according to claim 1 , wherein the screen is made by welded wires and rods.6. Reactor according to claim 1 , wherein the screen is made by a flat printed pattern.7. Reactor according to claim 1 , wherein the weight of the screen is below 100 kg.8. Reactor according to claim 1 , wherein the weight of the screen is below 25 kg.9. Reactor according to claim 1 , wherein the screen is fixed to the cassette by means of quick release means claim 1 , enabling the screen to be fixed to or detached from the cassette by hand or by hand tools in less than 30 minutes.10. Reactor according to claim 1 , wherein the screen is fixed to the cassette by means of quick release means claim 1 , enabling the screen to be fixed to or detached from the cassette by hand or by hand tools in less than 5 minutes.11. Reactor according to claim 1 , wherein a majority of the screens in the reactor are rectangular and each is fixed to a cassette in each of its four ...

Подробнее
Номер записи: 26
12-03-2020 дата публикации

Radial Flow Adsorption Vessel Comprising Flexible Screen

Номер: US20200078722A1
Автор: "ONeill Christopher Michael", Kiffer Micah S., Tentarelli Stephen Clyde
Принадлежит: AIR PRODUCTS AND CHEMICALS, INC.

The present invention pertains to a radial flow adsorption vessel comprising a cylindrical outer shell and at least one cylindrical porous wall disposed co-axially inside the shell, wherein inside the shell one or more fluid permeable screens are rigidly connected to the at least one cylindrical porous wall, by a multitude of separate standoff elements so that the screen has a cylindrical shape co-axial to the shell, and to an adsorption process using the radial flow adsorption vessel. 1. A radial flow adsorption vessel comprising a cylindrical outer shell and at least one cylindrical porous wall disposed co-axially inside the shell , wherein inside the shell one or more fluid permeable screens are rigidly connected to the at least one porous wall by a multitude of separate standoff elements so that the screen has a cylindrical shape co-axial to the shell.2. Radial flow adsorption vessel according to wherein the screen comprises a mesh wire claim 1 , woven wire cloth or an expanded metal.3. Radial flow adsorption vessel according to or wherein the screen comprises a material having a stiffness of less than 35 Nm.4. Radial flow adsorption vessel according to any of the preceding claims comprising at least an inner and an outer cylindrical porous wall disposed co-axially inside the shell and wherein the fluid permeable screen is rigidly connected to one of the porous walls by the multitude of separate standoff elements so that the screen has a cylindrical shape co-axial to the shell.5. Radial flow adsorption vessel according to any of the preceding claims wherein the standoff elements are mounted so that they have their smallest extension in the plane perpendicular to the filling direction of the adsorbent particles.6. Radial flow adsorption vessel according to any of the preceding claims wherein the edges of the standoff elements pointing in the filling direction of the adsorbent particles are tapered.7. Radial flow adsorption vessel according to any of the preceding ...

Подробнее
Номер записи: 27
12-03-2020 дата публикации

A METHOD FOR THE PRODUCTION OF HIGH PURITY BUTADIENE AND N-BUTENE FROM N-BUTANE USING AN OXIDATIVE DEHYDROGENATION PROCESS IN A CONTINUOUS-FLOW MULTI-LAYER-CATALYST FIXED-BED REACTOR

Номер: US20200079710A1
Автор: Bunama Ramsey, Choi YongMan, JAMALEDDINE Tarek Jamal
Принадлежит:

Systems and methods for the production of n-butene isomers and/or 1,3-butadiene are disclosed. The systems and method involve an oxidative dehydrogenation (ODH) process for the production of n-butene isomers and 1,3-butadiene light olefins using an adjustable, multi-purpose, and multi-layer-catalyst bed for a reactor. 1. A method of producing n-butene (CHCHCH═CH) and/or 1 ,3-butadiene (HC═CH—CH═CH) , the method comprising:{'sub': 4', '4', '10, 'flowing a feed stream comprising Chydrocarbons, including n-butane (CH), to a reactor, the reactor including a catalyst bed that comprises three separate catalytic layers arranged in series with respect to the flow of the feed stream, wherein a first inert layer of material is disposed between a first catalytic layer of the three separate catalytic layers and a second catalytic layer of the three separate catalytic layers, wherein a second inert layer of material is disposed between the second catalytic layer and a third catalytic layer of the three separate catalytic layers,'}contacting the n-butane with the first catalytic layer under reaction conditions sufficient to convert n-butane to n-butene and 1,3-butadiene, wherein the first catalytic layer is adapted to catalyze conversion of n-butane to n-butene and 1,3-butadiene; andflowing n-butene and/or 1,3-butadiene from the reactor.2. The method of claim 1 , wherein the feed stream comprises primarily n-butane.3. The method of claim 1 , wherein the feed stream comprises 85 to 99 wt. % n-butane claim 1 , 1 to 10 wt. % of n-butene claim 1 , and 0 to 5 wt. % of residual Ccompounds.4. The method of claim 1 , wherein each catalytic layer comprises different catalytic materials from the other catalytic layers.5. The method of claim 1 , further comprising:contacting a first portion of the n-butene with the second catalytic layer under reaction conditions sufficient to convert the first portion of the n-butene to 1,3-butadiene, wherein the second catalytic layer is adapted to ...

Подробнее
Номер записи: 28
12-05-2022 дата публикации

APPARATUS, SYSTEM, AND METHOD FOR GENERATING GAS FOR USE IN A PROCESS CHAMBER

Номер: US20220145454A1
Автор: Marquardt David
Принадлежит:

Embodiments described herein generally relate to apparatus having a canister with a sidewall, a top, and a bottom forming a canister volume. An inlet line and an outlet line is coupled to the top and is in fluid communication with the canister volume. A plate disposed within the canister volume forms a headspace volume below the plate. Each of the inlet line and the outlet line is in fluid communication with the headspace volume. The apparatus includes standoffs extending from a lower surface of the plate. The standoffs include a lower surface area substantially parallel with the plate. 1. An apparatus comprising:a canister having a sidewall, a top, and a bottom forming a canister volume;an inlet line and an outlet line coupled to the top and in fluid communication with the canister volume;a plate disposed within the canister volume forming a headspace volume below the plate, the inlet line and the outlet line each in fluid communication with the headspace volume; andone or more standoffs extending from a lower surface of the plate, wherein the one or more standoffs comprise a lower surface area substantially parallel with the plate.2. The apparatus of claim 1 , wherein each of the one or more standoffs comprise posts extending from the lower surface of the plate to a respective foot claim 1 , the foot comprising the lower surface area substantially parallel with the plate.3. The apparatus of claim 1 , further comprising an inlet bellow fluidly coupled to the inlet line and fluidly coupled to an inlet opening of the plate; and an outlet bellow fluidly coupled to the outlet line and fluidly coupled to an outlet opening of the plate.4. The apparatus of claim 3 , further comprising a support bellow coupled to the plate claim 3 , the support bellow surrounding a piston rod of a linear actuator.5. The apparatus of claim 4 , further comprising a sensor configured to detect a piston position of the linear actuator claim 4 , wherein the piston position corresponds to a ...

Подробнее
Номер записи: 29
26-03-2020 дата публикации

PARTICLE SEPARATING CATALYTIC CHEMICAL REACTOR WITH FILTER UNIT

Номер: US20200094210A1
Автор: Risbjerg Jarlkov Klaus, ZAHIROVIC Emir
Принадлежит: Haldor Topsoe A/S

A catalytic reactor comprises a filter unit which extracts and collects particles from the fluid flow stream above the reactor internals, the filter unit comprises elements which are safely, easily and quickly handled without the need for tools. 1. Particle separating catalytic reactor for chemical reactions , comprising at least one filter unit for separating particles from the inlet fluid stream to the reactor , said filter unit comprises a base , at least one filter cassette comprising one or more filter screens comprising apertures , wherein said base comprises at least one mounting face for mounting of one or more of the filter cassettes and the base further comprises a fluid outlet for the filter unit to a catalyst reaction chamber of the reactor , whereby the base is an integrated cassette base and filter unit outlet.2. Particle separating catalytic reactor according to claim 1 , wherein said base comprises two mounting faces for mounting a plurality of filter cassettes.3. Particle separating catalytic reactor according to claim 2 , wherein the two mounting faces are arranged on two opposing sides of the base.4. Particle separating catalytic reactor according to claim 1 , wherein the fluid outlet is arranged in the bottom of said base.5. Particle separating catalytic reactor according to claim 1 , wherein each filter cassette comprises two filter screens.6. Particle separating catalytic reactor according to claim 1 , wherein the filter unit comprises at least one 1order cassette and at least one 2order cassette claim 1 , the 1order cassette adapted to be mounted on the mounting face and the 2order cassette adapted to be mounted on the 1order cassette claim 1 , whereby the 1and the 2order cassettes are arranged in serial connection with regard to the fluid flow.7. Particle separating catalytic reactor according to claim 1 , wherein the screens are made of bended metal plate with a zig-zag pattern when seen in a cross-directional view.8. Particle separating ...

Подробнее
Номер записи: 30
11-04-2019 дата публикации

FIXED BED RADIAL FLOW REACTOR FOR LIGHT PARAFFIN CONVERSION

Номер: US20190105626A1
Автор: Behkish Arsam, Keusenkothen Paul F., Maher David W., Valencia Jaime A.
Принадлежит:

Systems and methods are provided for conversion of light paraffinic gases to form liquid products in a process performed in a fixed bed radial-flow reactor. The light paraffins can correspond to C paraffins. Examples of liquid products that can be formed include C-Caromatics, such as benzene, toluene, and xylene. The fixed bed radial-flow reactor can allow for improved control over the reaction conditions for paraffin conversion in spite of the fixed bed nature of the reactor. This can allow the process to operate with improved efficiency while reducing or minimizing the complexity of operation relative to non-fixed bed reactor systems. 112.-. (canceled)13. A method for processing a paraffin-containing feed , comprising:{'sub': 3+', '6', '12, 'exposing a feed comprising about 30 vol % to about 70 vol % of C paraffins to one or more fixed beds of a conversion catalyst to form a conversion effluent comprising C-Caromatics, the one or more fixed beds of the conversion catalyst comprising fixed beds in one or more radial flow reactors, a combined pressure drop across the one or more fixed beds being less than about 100 kPag, the one or more radial flow reactors comprising{'b': '1', 'an outer annular volume defined by an interior of a reactor wall and an exterior of a gas-permeable wall, the interior of the reactor wall defining an outer annular radius R;'}{'b': '3', 'a central volume defined by the interior of a central column and a column cap, the interior of the central column defining a column radius R; and'}{'b': '2', 'an inner annular volume defined by an interior of the gas-permeable wall, an exterior of the central column, an inner annular top, and an inner annular bottom, the interior of the gas-permeable wall defining an inner annular radius R, the inner annular volume comprising a catalyst bed, the inner annular volume being in direct fluid communication with the outer annular volume through the gas-permeable wall, the inner annular volume being in direct ...

Подробнее
Номер записи: 31
05-05-2016 дата публикации

REACTOR

Номер: US20160121289A1
Автор: COMBES Gary Bevan
Принадлежит: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

A reactor includes: a shell with first and second ends, an fluid inlet at the first end for receiving a process fluid, and an outlet at the second end for discharging a reacted process fluid, and a plurality of elongate containment units within the shell for containing a particulate catalyst or sorbent, each containment unit including two perforate members defining a space in which the particulate catalyst or sorbent may be placed, the perforate members mounted between two fluid-impermeable end members, wherein one end member extends across the containment unit to provide a closed end and the other end member closes the space thereby providing an open end through which a process fluid may enter or exit the containment unit, and a header assembly connected to the open ends of the containment units and either the fluid inlet or fluid outlet. A process using the reactor is also described. 119-. (canceled)20. A reactor comprising: a shell with first and second ends , a process fluid inlet at the first end for receiving a process fluid , and a process fluid outlet at the second end for discharging a reacted or decontaminated process fluid , and a plurality of elongate containment units within said shell for containing a particulate catalyst or sorbent , each containment unit comprising two perforate members defining a space in which the particulate catalyst or sorbent may be placed , said perforate members mounted between two process fluid-impermeable end members , wherein one end member extends across the containment unit to provide a closed end and the other end member closes the space thereby providing an open end through which a process fluid may enter or exit the containment unit , and a header assembly connected to the open ends of the containment units and either said process fluid inlet or said process fluid outlet , wherein each containment unit comprises an outer perforate member an inner perforate member , arranged concentrically , and a central void within ...

Подробнее
Номер записи: 32
05-05-2016 дата публикации

SMALL-SCALE REACTOR HAVING IMPROVED MIXING

Номер: US20160121290A1
Автор: Sidhu Robbie Singh
Принадлежит:

a reactor for conducting laboratory reactions comprises includes reaction vessel, a catalyst holder in the reaction vessel, and a drive system configured to drive reciprocating linear movement of the catalyst basket. The catalyst holder can be configured to hold a plurality of catalyst particles so the catalyst particles remain spaced apart from one another. A reactor for conducting laboratory reactions can also include a reaction vessel, an impeller in the reaction vessel, and a drive system configured to drive reciprocating linear movement of the impeller. 1. A reactor for conducting laboratory reactions , the reactor comprising:a reaction vessel,a catalyst basket in the reaction vessel, anda drive system configured to drive reciprocating linear movement of the catalyst basket.2. A reactor as set forth in wherein the drive system is further configured to drive rotary motion of the catalyst basket and said linear reciprocating movement at the same time.3. A method of conducting a chemical reaction claim 1 , the method comprising:using a catalyst basket to stir reaction materials in a reaction vessel by driving a reciprocating linear motion of the catalyst basket.4. A method as set forth in further comprising driving rotation of the catalyst basket while simultaneously driving said reciprocating linear motion.5. (canceled)6. A reactor for conducting laboratory reactions claim 3 , the reactor comprising:a reaction vessel,a catalyst holder in the reactor, the catalyst holder being configured to hold a plurality of catalyst particles so the catalyst particles remain spaced apart from one another.7. (canceled) This application claims priority to U.S. Provisional Patent Application Ser. No. 62/074,358, filed on Nov. 3, 2014, which is hereby for all purposes incorporated by reference.The present invention relates generally to small-scale (e.g., laboratory and/or bench top) reactor systems used to research chemical reactions, and more particularly to methods and apparatus ...

Подробнее
Номер записи: 33
03-05-2018 дата публикации

SLURRY PHASE APPARATUS

Номер: US20180117558A1
Автор: Kleynhans Evert Phillippus, Lee Marshall Stephen, Louw Jako, Nel Hermanus Gerhardus, STEYNBERG Andre Peter
Принадлежит: SASOL TECHNOLOGY (PROPRIETARY) LIMITED

A method of operating a slurry phase apparatus includes feeding one or more gaseous reactants into a slurry body of solid particulate material suspended in a suspension liquid contained inside a vessel. The one or more gaseous reactants are fed into the slurry body through a gas distributor having downward facing gas outlets and are fed towards a fluid impermeable partition spanning across the vessel below the gas distributor. The partition divides the vessel into a slurry volume above the partition and a bottom volume below the partition. A differential pressure is maintained over the partition between predefined limits by manipulating or allowing changes in the pressure in the bottom volume by employing a pressure transfer passage establishing flow or pressure communication between the bottom volume and a head space above the slurry body. 19-. (canceled)10. A slurry phase apparatus which includesa slurry vessel to hold a slurry body comprising a liquid and solid particulate material with a head space volume above the slurry body;a gas distributor in a lower portion of the vessel which defines downwards facing gas outlets;a fluid impermeable partition spanning across the slurry vessel below the gas distributor partitioning the vessel into a slurry volume above the partition and a bottom volume below the partition; anda pressure transfer passage or conduit passing through or around the partition allowing transfer of pressure into and from the bottom volume, the pressure transfer passage in use establishing flow or pressure communication between the bottom volume and the head space volume in the slurry vessel above the slurry volume thereby to maintain a differential pressure over the partition between predefined limits by manipulating or allowing changes in the pressure in the bottom volume.11. The apparatus according to claim 10 , in which the fluid impermeable partition is planar or flat and arranged perpendicular to a longitudinal vertical central axis of the ...

Подробнее
Номер записи: 34
03-05-2018 дата публикации

Airlift Reactor Assembly with Helical Sieve Plate

Номер: US20180119083A1
Автор: Chen Yuqi, Gao Minjie, Zhan Xiaobei, Zheng Zhiyong
Принадлежит:

The present invention discloses an airlift reactor assembly with a helical sieve plate, comprising a reaction tank, wherein a draft tube and a gas sparger are assembled in the reaction tank, the gas sparger is arranged just below an riser section of the draft tube, a helical sieve plate is arranged in the riser section of the draft tube, and a body of the helical sieve plate is helical upwards to guide a part of two/three-phase flow in the riser section, and the body of the helical sieve plate is provided with a plurality of sieve meshes to guide the remaining two/three-phase go through the helical sieve plate in the riser section and to break bubbles. The present invention gives consideration to both macroscopic mixing and microscopic mixing processes. In addition to driving liquid to circularly flow by using ejected gas, the helical sieve plate can be used for breaking large bubbles into small bubbles thereby effectively preventing the bubbles from coalescing, increasing gas holdup and increasing a volumetric oxygen transfer coefficient. 1. An airlift reactor assembly with a helical sieve plate , comprising a reaction tank , wherein the reaction tank being assembled with a draft tube and a gas sparger therein; wherein an inner space and an outer space of the draft tube respectively forming a cylindrical guide passage and an annulus-shaped guide passage; wherein one of the cylindrical guide passage and the annulus-shaped guide passage being arranged to be an riser section and the other one being arranged to be a downcomer section , and the gas sparger being arranged just below the riser section; wherein a helical sieve plate is mounted in the riser section of the draft tube; wherein a body of the helical sieve plate is helical upwards to guide a part of two/three-phase flow in the riser section , and the body of the helical sieve plate is provided with a plurality of sieve meshes to guide the remaining two/three-phase flow go through the helical sieve plate in the ...

Подробнее
Номер записи: 35
25-04-2019 дата публикации

PREPARATION OF RED IRON OXIDE PIGMENT

Номер: US20190119125A1
Автор: CZAPLIK Waldemar
Принадлежит: LANXESS DEUTSCHLAND GMBH

The present invention relates to an improved process for producing iron oxide red pigments by the Penniman process using nitrate (also referred to as nitrate process or direct red process) and apparatuses for carrying out the process. 1. Apparatus for producing haematite , the apparatus comprising:a reaction vessel for contacting iron(II) nitrate, haematite nuclei, iron, and nitrogen oxide to produce haematite in a haematite pigment suspension,a support for supporting iron within the reaction vessel,at least one gas introduction unit for introducing at least one first nitrogen oxide-containing stream and/or direct steam into the reaction vessel,an inlet for introducing a reaction medium of iron(II) nitrate solution, haematite nucleus suspension, and optionally water into the reaction vessel,an outlet for removing at least one second nitrogen oxide-containing stream from the reaction vessel,an outlet for removal of the haematite pigment suspension from the reaction vessel, andat least one multiway valve for controlling fluid flow of at least the first nitrogen oxide-containing stream into the reaction vessel and the second nitrogen oxide-containing stream from the reaction vessel.2. The apparatus for producing haematite according to claim 1 , wherein the multiway valve comprises:an inlet for the at least one second nitrogen oxide-containing stream,an outlet for at least one third nitrogen oxide-containing stream,an inlet for at least one oxygen-containing gas, andan outlet for the at least one first nitrogen oxide-containing stream.3. The apparatus for producing haematite according to claim 1 , further comprising a first fluid conduit for fluidly connecting the reaction vessel to the at least one multiway valve claim 1 , and a second fluid conduit for fluidly connecting the gas introduction unit to the at least one multiway valve.4. Apparatus for producing haematite claim 1 , the apparatus comprising:a reaction vessel,a support for supporting iron within the reaction ...

Подробнее
Номер записи: 36
27-05-2021 дата публикации

Method of catalyst testing in fluidized bed reactors using catalyst capsules

Номер: US20210154636A1
Автор: Omer Refa Koseoglu
Принадлежит: Saudi Arabian Oil Co

A method for testing catalysts in a fluidized bed reactor comprises enclosing catalyst material in capsules having pores or holes smaller than the catalyst material, inserting the capsules filled with catalyst material to into a port of the fluidized bed reactor and recovering at least a portion of the catalyst capsules from the fluidized bed reactor after use through an additional port of the fluidized bed reactor, wherein the capsules move with a flow of uplifted fluid and gas in the fluidized bed reactor.

Подробнее
Номер записи: 37
11-05-2017 дата публикации

Easy clean catalyst filter basket

Номер: US20170128901A1
Автор: Edwin MAAS, Ruud KNEPPERS
Принадлежит: Shell Oil Co

A catalyst filter basket for containing catalyst material within a catalytic chemical reactor. The catalyst filter basket includes a central frame having a base ring and a generally cylindrical inner screen portion which extends upwardly from the base ring. A generally cylindrical outer screen assembly is releasably secured to the central frame by a quick release mechanism.

Подробнее
Номер записи: 38
02-05-2019 дата публикации

DEHYDROGENATION PROCESS

Номер: US20190127298A1
Автор: Nedohin Gregory J., Sadler Clayton C., Serban Manuela, Vetter Michael J.
Принадлежит:

Large pill dehydrogenation catalysts and large screens slot width are combined in dehydrogenation units to reduce the pressure drop across the catalyst bed and reactor screens compared to conventional screen and catalyst size combinations. The catalyst has an average pill diameter in the range of 1.6 mm to 3.0 mm, and the slot width of the screen is in the range of about 30% to about 60% of the pill diameter. 1. A process for dehydrogenation of a hydrocarbon feed comprising:providing a hydrocarbon feed stream comprising at least one paraffin to a dehydrogenation reactor, the reactor comprising a shell containing at least one screen;contacting the feed stream with a catalyst in the reactor under dehydrogenation conditions, the catalyst having an average pill diameter in a range of 1.6 mm to 3.0 mm, and wherein a screen slot width of the at least one screen is in a range of about 30% to about 60% of the pill diameter; andremoving an effluent stream comprising at least one olefin from the reactor.2. The process of wherein the slot width is in the range of about 30% to about 40% of the average pill diameter.3. The process of wherein the screen slot width is in the range of about 40% to about 50% of the average pill diameter.4. The process of wherein the relative screen delta pressure drop in the screen slot width range is decreased by about 35-55% compared to a process having screen slot width in the range of about 30% to about 40% of the average pill diameter.5. The process of wherein the screen slot width is in the range of about 50% to about 60% of the average pill diameter.6. The process of wherein the relative screen delta pressure drop in the screen slot width range is decreased by about 50 to 65% compared to a process having screen slot width in the range of about 30% to about 40% of the average pill diameter.7. The process of wherein the relative delta pressure in the catalyst bed is decreased by at least 15% compared to a process using a catalyst having an ...

Подробнее
Номер записи: 39
03-06-2021 дата публикации

SUPPORT GRID FOR FILLING MATERIAL PACKING

Номер: US20210162366A1
Автор: SPULLER Ralph
Принадлежит: SGL CARBON SE

A support grid for filling material packing and to a component set for producing such a support grid, including support strips and top strips which are inclined relative to one another in opposite directions. The support strips and top strips intersect one another, the inclination of each top strip is defined by at least one top strip receiving groove which is made in at least one support strip and in which the top strip is received, and the orientation of each support strip is stabilised by at least one support strip receiving groove in which the support strip is received. 115-. (canceled)16. A support grid for filling material packing , comprising support strips and comprising top strips which are inclined relative to one another in opposite directions , whereinthe support strips and the top strips intersect one another,the inclination of each top strip is defined by at least one top strip receiving groove which is made in at least one support strip and in which the top strip is received, andthe orientation of each support strip is stabilised by at least one support strip receiving groove in which the support strip is received.17. The support grid according to claim 16 , wherein at least one of the support strip receiving grooves is made in at least one top strip.18. The support grid according to claim 16 , wherein the inclination of each top strip is defined by more than one top strip receiving groove made in different support strips.19. The support grid according to claim 16 , wherein a top strip receiving groove and a support strip receiving groove interlock at least one point where a support strip intersects a top strip.20. The support grid according to claim 16 , wherein at least one point at which a support strip intersects a top strip claim 16 , the depth of the support strip receiving groove is less than the height of a portion of the top strip protruding beyond the support strip.21. The support grid according to claim 16 , comprising fluid passage ...

Подробнее
Номер записи: 40
19-05-2016 дата публикации

COLLECTOR PIPE FOR A RADIAL REACTOR COMPRISING SOLID FILLETS

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

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

Подробнее
Номер записи: 41
19-05-2016 дата публикации

METHODS AND APPARATUS FOR THREE PHASE CONTACTING AND REACTIONS IN A CROSS FLOW REACTOR

Номер: US20160136603A1
Автор: KAALVA Srinivasulu, PARIHAR Prashant Udaysinh, VOOLAPALLI RaviKumar
Принадлежит:

Methods, apparatus and processes for three phase contacting and reactions in a cross flow reactor with reduced feed vaporization, low pressure operation, higher liquid holdup, lower reactor pressure drop, low severity operation, and reduced product inhibitory effects. A cross flow reactor for three phase catalytic hydroprocessing, having at least one reactor stage is disclosed. The reactor stage has a central gas distributor with perforated lateral surface for distributing gas, a middle region accommodating a packed catalyst bed, and an outer gas space for removal of effluent gases from the middle region. The middle region receives a liquid reactant and gas from central gas distributor to carry out three phase catalytic hydroprocessing reaction. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. (canceled)12. (canceled)13. (canceled)14. (canceled)15. (canceled)16. (canceled)17. (canceled)18. (canceled)19. (canceled)20. (canceled)21. (canceled)22. (canceled)23. (canceled)24. (canceled)25. A cross-flow reactor enclosed in a shell for three phase catalytic hydroprocessing , the cross-flow reactor comprising at least one reactor stage , wherein the at least one reactor stage comprises:a central gas distributor having perforations on a lateral surface for distributing reactant gas into the cross-flow reactor, wherein the central gas distributor distributes the reactant gas through the perforations in a direction substantially tangential to a downward flowing liquid reactant;a middle region for accommodating a packed catalyst bed and receiving the liquid reactant, the middle region being concentric to the central gas distributor, wherein the lateral surface of the central gas distributor forms an inner bound of the middle region and perforated support plates form an outer bound of the middle region, and wherein porous support plates form an upper and a lower bound of the middle region, and ...

Подробнее
Номер записи: 42
19-05-2016 дата публикации

REACTOR FOR PARTIAL OXIDATION OF HYDROCARBON GASES

Номер: US20160136604A1
Автор: DERGACHEV Alexander Alexandrovich, DOLINSKIY Sergey Erikovich
Принадлежит: OBSHCHESTVO S OGRANICHENNOY OTVETSTVENNOST'YU "GAZOKHIM TECHNO"

This disclosure is related to reactor for partial oxidation of hydrocarbonaceous feedstock. The reactor comprises outer shell with reaction products outlet device with at least one device for inlet of feedstock or feedstock components into the catalyst sleeve placed within the reactor with a gap between the outer shell filled with a catalyst and comprising means of product outlet from its lower part. This catalyst sleeve is furnished with a jacket in contact with at least a part of the cylindrical wall of the catalyst sleeve having open-end holes in the point of contact with jacket, and the reactor is equipped with a means of inlet of a cooling agent into the jacket that cools the catalyst sleeve. Technical result of claimed invention is reduction of catalyst sleeve wall temperature to 1000° C. or lower and reduction of catalyst sleeve material corrosion. 1. A reactor for partial oxidation of hydrocarbonaceous feedstock comprising a pressure vessel with a means of outlet of reaction products and at least one means of inlet of feedstock , or feedstock components , into the placed within the reactor with a gap catalyst sleeve filled in with a catalyst and comprising means of product outlet in its lower part and differing in that the catalyst sleeve is furnished with a jacket adjacent to at least a part of the cylindrical wall of the catalyst sleeve , which is made with open-end holes in the adjacency zone of the jacket , and the reactor is equipped with a means of inlet into the jacket of a cooling agent that cools the catalyst sleeve and then enters into the catalyst sleeve through the holes in its wall.2. The reactor according to claim 1 , wherein the cooling agent comprises water steam claim 1 , synthesis gas or their admixture.3. The reactor according to claim 1 , wherein a gap between the catalyst sleeve jacket and the reactor pressure vessel is filled in with a heat-insulating material.4. The reactor according to claim 1 , further comprising a cooling chamber ...

Подробнее
Номер записи: 43
19-05-2016 дата публикации

Collector pipe for a radial-bed reactor

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

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

Подробнее
Номер записи: 44
07-08-2014 дата публикации

FUEL CONDITIONING MODULES AND METHODS

Номер: US20140216379A1
Автор: Ratner Joel S.
Принадлежит: ROYCE WALKER & CO., LTD.

Fuel conditioning modules that condition a combustible fuel prior to combustion are provided so that fuel to be conditioned is brought into contact with a fuel conditioning insert which includes a zeolite catalyst material comprised of a mixture of zeolite particulates and rare earth metal or metal oxide particulates in a solid resin binder disposed in a housing flow through passageway such that the fuel flowing in the passageway between inlet and outlet ends of the housing contacts the fuel conditioning insert assembly. The catalytic metal is most preferably at least one selected from the group consisting of copper, aluminum, stainless steel, titanium, magnesium, chromium, barium, calcium, platinum, palladium, nickel, bronze and iron. The zeolite catalyst material may be dispersed in the form of solid chips throughout a mass of metallic elements form of a catalytic metal. 127-. (canceled)28. A fuel conditioning module to condition a combustible fuel prior to combustion , comprising:a housing having inlet and outlet ends and defining a flow-through passageway for the fuel therebetween; anda fuel conditioning insert assembly disposed in the flow-through passageway such that the fuel flowing in the passageway between the inlet and outlet ends of the housing contacts the fuel conditioning assembly, wherein the fuel conditioning insert assembly includes:(i) a mass of catalytic metallic elements formed of a catalytic metal,(ii) a mass of solid resin catalytic material in the form of chips dispersed throughout the mass of catalytic metallic elements, wherein the chips of solid resin catalytic material are comprised of a resin binder and a catalyst mixture of zeolite particulates and rare earth metal or metal oxide particulates mixed within the solid resin binder.29. The fuel conditioning module of claim 28 , further comprising a wire mesh enclosure containing the mass of catalytic metallic elements and the chips of solid resin catalytic material dispersed throughout the ...

Подробнее
Номер записи: 45
28-05-2015 дата публикации

PROCESS FOR PRODUCING AN ANTI-EROSION COATING ON AN INNER WALL OF A CHAMBER OF A FCC UNIT AND ANCHORING STRUCTURE FOR THE PRODUCTION OF THIS COATING

Номер: US20150147236A1
Автор: Bories Marc, Simon Hubert
Принадлежит: TOTAL RAFFINAGE CHIMIE

A process for producing an anti-erosion coating on an inner or outer metal wall of a chamber of a fluid catalytic cracking unit, comprising: 1. Process for producing an anti-erosion coating on an inner or outer metal wall of a chamber of a fluid catalytic cracking unit , comprising:(i) shaping a honeycomb metal anchoring structure, said anchoring structure being formed from a plurality of strips connected in pairs so as to form a plurality of cells between two adjacent strips, in which each strip is divided along its length into a plurality of portions, including at least one series of assembly portions extending in a same plane and connected to a series of assembly portions of an adjacent strip by fastening means, each strip having a lower longitudinal edge contained in a single plane before shaping and an upper longitudinal edge, during this shaping step, the lower longitudinal edges of the strips of said anchoring structure being adapted in order to follow the shape of said metal wall,(ii) fastening said anchoring structure to said metal wall, the lower longitudinal edges of the strips of the anchoring structure being in contact with the metal wall, this fastening being carried out by welding to the metal wall of at least one part of the lower longitudinal edges of the strips so that each cell of the anchoring structure is welded to the metal wall at least at the junctions between the contiguous assembly portions of two adjacent strips, and(iii) inserting a composite material into the cells of said anchoring structure from the metal wall and at least up to the upper longitudinal edge of each strip.2. Process for producing an anti-erosion coating according to claim 1 , in which at least one of the welds produced during step (ii) at the junction of the contiguous assembly portions of two adjacent strips extends over the entire length of at least one of the strip portions adjacent to the assembly portions.3. Process for producing an anti-erosion coating according to ...

Подробнее
Номер записи: 46
28-05-2015 дата публикации

Specialized Immobilization Media

Номер: US20150147244A1
Автор: Kenneth W. Cross
Принадлежит: Individual

A genre of media is presented for use with a reactor vessel and for the purpose of immobilizing small particles, often catalytic in nature. The media can include a number of ferromagnetic active wafers stacked together and separated by non-ferromagnetic separator portions, such that when in the presence of a magnetic field and magnetic-particle-containing fluid, at least some of the gaps between active wafers captures and suspends magnetic particles.

Подробнее
Номер записи: 47
02-06-2016 дата публикации

REACTOR FOR PREPARING HYDROGEN CYANIDE BY THE ANDRUSSOW PROCESS, EQUIPMENT COMPRISING SAID REACTOR AND PROCESS USING SUCH AN EQUIPMENT

Номер: US20160152484A1
Автор: Bernardin Yves, Billon Romain, Marcarian Xavier
Принадлежит: Arkema France

The present invention relates to a reactor () for preparing hydrogen cyanide by the Andrussow process, to an equipment () comprising said reactor and to a process for preparing hydrogen cyanide by the Andrussow process. The reactor () comprising at least one gas inlet (I) for reactant gases mixture, a catalyst (), a porous support for the catalyst (), a porous sub support () and at least one outlet (P) for the reaction products. According to the invention, said reactor has a cone frustum shaped metallic casing () and comprises inside the metallic casing, a gas distributor () located between the gas inlet and the catalyst, said distributor comprising at least one cone frustum element (D, . . . Dn) having an upper base directed towards the gas inlet (I). 1201210202203. Reactor for preparing hydrogen cyanide by the Andrussow process , with at least one gas inlet for reactant gases mixture , a catalyst , at least one support for the catalyst and at least one outlet for the reaction products , wherein said reactor () comprises a cone frustum shaped casing () and comprises inside said casing , a gas distributor () located between a gas inlet (I) and a catalyst () , said distributor comprising at least onecone frustum element (Dn) having an upper base directed towards the gas inlet.2201. Reactor for preparing hydrogen cyanide by the Andrussow process according to claim 1 , wherein said reactor () is a cone frustum shaped with cylindrical bases.311212. Reactor for preparing hydrogen cyanide claim 1 , according to claim 1 , wherein the gas distributor comprises a plurality of coaxial cone frustum elements (D claim 1 , . . . Dn) being arranged around each other with a central cone frustum element having a height h claim 1 , an outer cone frustum element having an height hn claim 1 , and intermediate elements having respectively height h claim 1 , . . . claim 1 , h(n−1) claim 1 , where h is smaller than h claim 1 , and respectively h(n−1) is smaller than hn.42150. Reactor for ...

Подробнее
Номер записи: 48
15-09-2022 дата публикации

Chemical Reactor with Integrated Heat Exchanger, Heater, and High Conductance Catalyst Holder

Номер: US20220289583A1
Автор: Adam W. WELCH, Jonathan D. Kinter, Joseph D. BEACH
Принадлежит: Starfire Energy Inc

A chemical reactor that combines a pressure vessel, heat exchanger, heater, and catalyst holder into a single device is disclosed. The chemical reactor described herein reduces the cost of the reactor and reduces its parasitic heat losses. The disclosed chemical reactor is suitable for use in ammonia (NH 3 ) synthesis.

Подробнее
Номер записи: 49
07-05-2020 дата публикации

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

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

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

Подробнее
Номер записи: 50
11-06-2015 дата публикации

Reactor bed component for securing rigid assemblies

Номер: US20150157999A1
Автор: Robert Frank Tammera
Принадлежит: ExxonMobil Research and Engineering Co

Reactor bed component includes a foundation grate, a rigid structure and a fastener. The foundation grate has support plates spaced apart from each other by a distance and having a height with each support plate disposed at an angle. The rigid structure has first structure plates spaced apart by a multiple of the distance and disposed at the angle, and second structure plates secured to and disposed at an opposing angle. Each second structure plate has a horizontal extent to engage an upper edge of a corresponding support plate, and a number of the first structure plates have a length extending below the horizontal extent in overlapping relation with adjacent support plates to prevent horizontal movement of the rigid structure relative the foundation grate in a first direction. The fastener is disposed to secure the rigid structure to the grate against movement in a second direction opposite the first direction.

Подробнее
Номер записи: 51
11-06-2015 дата публикации

Reactor bed vessel and support assembly

Номер: US20150158000A1
Автор: Robert Frank Tammera
Принадлежит: ExxonMobil Research and Engineering Co

Vessel and support beam assembly includes a vessel having a cylindrical wall defining an interior chamber having a generally circular shape of diameter D in plan view, and a support assembly disposed within the interior chamber. The support assembly includes an inner hub defining an open central region, and a plurality of spokes extending radially from the inner hub. Each spoke is aligned radially with the cylindrical wall of the vessel and joined thereto. At least one open outer region is defined between circumferentially adjacent spokes.

Подробнее
Номер записи: 52
08-06-2017 дата публикации

Combination equalizer, inlet distributor and fixed valve tray for spherical reactor

Номер: US20170157587A1
Автор: Brad P. Palmer
Принадлежит: Phillips 66 Co

The invention relates to equalizing and distributing vapor more evenly across the interior space of a reactor vessel utilizing an equalizing section and distributor section at the inlet end and a fixed valve tray at the bottom of the reactor to equalize and distribute the flow.

Подробнее
Номер записи: 53
14-05-2020 дата публикации

Method of cleaning spent catalyst material

Номер: US20200147571A1
Автор: Edwin MAAS, Ruud KNEPPERS
Принадлежит: Shell Oil Co

A method of cleaning spent catalyst material from a catalyst filter basket. The catalyst filter basket includes a central frame having a base ring and a generally cylindrical inner screen portion which extends upwardly from the base ring. A generally cylindrical outer screen assembly is releasably secured to the central frame by a quick release mechanism

Подробнее
Номер записи: 54
14-05-2020 дата публикации

RADIAL-FLOW REACTOR APPARATUS

Номер: US20200147572A1
Автор: Early Simon Robert, Graham Simon, Wise Paul
Принадлежит:

A device suitable for use as a distributor or collector in a radial-flow reaction vessel is described, comprising an open end and a plurality of rigid columnar portions, each columnar portion comprising a cylindrical outer screen formed from parallel spaced wires and a perforate inner screen fixed to the outer screen, said inner screen formed from a plurality of adjacent perforate support members that support the spaced wires, wherein the rigid columnar portions further comprise means for controlling a flow of a gaseous process fluid to or from the device. The device may be used in radial-flow vessels used in chemical processes such as methanol synthesis. 1. A device suitable for use as a distributor or collector in a radial-flow reaction vessel , comprising an open end and a plurality of rigid columnar portions , each columnar portion comprising a cylindrical outer screen formed from parallel spaced wires and a perforate inner screen fixed to the outer screen , said inner screen formed from a plurality of adjacent perforate support members that support the spaced wires , wherein the rigid columnar portions further comprise a means for controlling a flow of a gaseous process fluid to or from the device , wherein the means for controlling the flow of a gaseous process fluid to or from the device comprises the use of overlapping spigot joints to join portions of the device nearest the open end , and internal flange joints to join portions furthest from the open end.2. The device of wherein the means for controlling the flow of the gaseous process fluid to or from the device further comprises is providing a greater number and/or a larger size and/or a smaller spacing of the perforations in the inner screen in a portion adjacent the open end.3. (canceled)4. The device of wherein the wires have cross-sections that are circular claim 1 , square claim 1 , rectangular claim 1 , triangular or polygonal.5. The device of wherein the triangular or wedge-shaped bars or wires are ...

Подробнее
Номер записи: 55
24-06-2021 дата публикации

CATALYST REGENERATOR

Номер: US20210189258A1
Автор: CHO Donghyun, CHOI Seongil, JO Sungkwon, KANG Na Young, KIM Kwan-Tae, LEE Dae-hoon, Park Yong-Ki, SONG Younghoon
Принадлежит:

A catalyst regenerator according to an embodiment of the present invention, as a catalyst regenerator that regenerates a coked catalyst separated from a product produced in an endothermic catalytic reaction of a fluidized bed reactor, includes: a reaction chamber that includes a regeneration space, receives the coked catalyst from a standpipe connected to the regeneration space, and discharges a regenerated catalyst to an outlet; a fuel supplier that is connected to the reaction chamber to inject a fuel for combustion into the regeneration space; and a fuel supplier that is connected to the reaction chamber to inject an air for combustion into the regeneration space, wherein the fuel injected from the fuel supplier is a reformed fuel containing hydrogen and carbon monoxide. 1. A catalyst regenerator for regenerating a coked catalyst separated from a product produced in an endothermic catalytic reaction of a fluidized bed reactor , comprising:a reaction chamber including a regeneration space, the reaction chamber configured to receive the coked catalyst from a standpipe connected to the regeneration space, and discharge a regenerated catalyst to an outlet;a fuel supplier connected to the reaction chamber to inject a fuel for combustion into the regeneration space; andan air supplier connected to the reaction chamber to inject air for combustion into the regeneration space,wherein the fuel injected from the fuel supplier is a reformed fuel containing hydrogen and carbon monoxide.2. The catalyst regenerator of claim 1 , whereinthe air supplier includes an air distribution ring supplied with the air and an air nozzle formed in the air distribution ring, andthe fuel supplier includes a fuel distribution ring supplied with the fuel and disposed to be adjacent to the air distribution ring and a fuel injection port formed in the fuel distribution ring.3. The catalyst regenerator of claim 2 , whereinthe outlet is installed at a predetermined height from a bottom of the ...

Подробнее
Номер записи: 56
30-05-2019 дата публикации

SCALLOP SUPPORT DISTRIBUTOR FOR RADIAL FLOW REACTOR

Номер: US20190160444A1
Автор: Bennett Heather, Eberhardt Gene, HILLENBURG Russell
Принадлежит:

A supported scallop and a support distributor therefor for use in a radial flow reactor. The support distributor includes an elongated sheet having a plurality of perforations extending through a thickness thereof, and at least one edge along a length thereof so as to form a member having at least one support point which engages an inner surface of the scallop. 1. A support distributor for a scallop for use in a radial flow reactor , comprising: a plurality of perforations extending through a thickness thereof, the plurality of perforations being configured to allow gases, vapors, or liquids to flow through the thickness of the elongated sheet, and', 'at least one edge along a length thereof so as to form a member having at least one support point which engages an inner surface of the scallop., 'an elongated sheet having2. The support distributor of claim 1 , wherein the elongated sheet has a plurality of edges along the length thereof so that the member has a plurality support points which engage the inner surface of the scallop.3. The support distributor of claim 1 , wherein the support distributor has one of a V-shaped cross-section claim 1 , a W-shaped cross-section claim 1 , a triangular cross-sectional shape claim 1 , a square cross-sectional shape claim 1 , or a rectangular cross-sectional shape.4. The support distributor of claim 1 , wherein each of the plurality of perforations has a generally circular claim 1 , square claim 1 , or rectangular shape.5. The support distributor of claim 1 , wherein the elongated sheet is formed of a metal alloy.6. The support distributor of claim 5 , wherein the metal alloy is stainless steel.7. A support distributor for a scallop for use in a radial flow reactor claim 5 , comprising: a plurality of perforations extending through a thickness thereof, the plurality of perforations being configured to allow gases, vapors, or liquids to flow through the thickness, and', 'at least one edge along a length thereof so as to form a ...

Подробнее
Номер записи: 57
21-05-2020 дата публикации

CATALYTIC REACTOR COMPRISING FIBROUS CATALYST PARTICLES SUPPORT

Номер: US20200156033A1
Автор: Cenni Roberta, ZAHIROVIC Emir
Принадлежит:

The present disclosure relates to a reactor containing of catalyst particles, a layer of fibrous catalyst particles support below said catalyst particles and a lower means of structural support below said catalyst particles with the associated benefit of such a reactor having increased space for catalyst particles, compared to a reactor with inert particles supporting the catalyst particles. 1. A reactor containing catalyst particles , a layer of fibrous catalyst particles support below said catalyst particles and a lower means of structural support below said catalyst particles , wherein the ratio between width and thickness of the fibrous catalyst particles support is at least 50:1 and the fibrous catalyst particles support allows passage of a liquid.2. A reactor according to in which said layer of fibrous catalyst particles support comprises oxide fibres.3. A reactor according to in which said layer of fibrous catalyst particles support comprises non-oxide material.4. A reactor according to in which said layer of fibrous catalyst particles support comprises oxide fibers as well as non-oxide material.5. A reactor according to in which said layer of fibrous catalyst particles support is a composite on fibre level.6. A reactor according to in which said layer of fibrous catalyst particles support is a layered composite comprising a layer of a material comprising oxide fibres and a second layer comprising non-oxidic fibres.7. A reactor according to in which said layer of fibrous catalyst particles support provides retention for particles with a diameter above 0.1 mm.8. A reactor according to in which said layer of fibrous catalyst particles support provides a resistance to a flow of a mixture below 1.5 kPa when said mixture comprises a gas with a viscosity of 0.017 cP and flowing through the fibrous catalyst particles support with a linear flow rate of 250 m/h; and a liquid with a viscosity of 0.15 cP claim 1 , flowing through the fibrous catalyst particles support ...

Подробнее
Номер записи: 58
22-06-2017 дата публикации

Tray support insers for chemical reactor vessels and methods of use

Номер: US20170173547A1
Автор: MAAS Edwin, SCHILTHUIZEN Remco
Принадлежит:

A tray support insert and method of use for supporting one or more trays within a reactor chamber. The tray support insert includes at least one annular member which rests upon a support shoulder within the reactor chamber. 1. A tray support insert to support a tray within the reactor chamber of a hydrocarbon chemical reactor , the reactor chamber having an interior surface with a support shoulder formed thereon , the tray support insert comprising:at least one annular member which rests upon the support shoulder and which presents a supporting surface for a tray.2. The tray support insert of wherein the at least one annular member further comprises:a support grid skirt which presents a first supporting surface for a first tray; anda catalyst support grid ring which is seated upon the support grid skirt and which presents a second supporting surface for a second tray.3. The tray support insert of wherein the at least one annular member is formed of stainless steel.4. The tray support insert of wherein the at least one annular member is formed of a plurality of separate arcuate segments which can be assembled together to form a complete annular structure.5. The tray support insert of wherein the support grid skirt further comprises:an annular skirt frame; anda plurality of support members which extend axially away from the annular skirt frame.6. The tray support insert of wherein the catalyst support grid ring further comprises:a vertical curved panel; anda tray support ledge which projects radially inwardly from the panel and upon which a tray can be supported.7. The tray support system of wherein the catalyst support grid ring further comprises a rectangular box portion which projects radially inwardly from the panel and which presents a supporting surface for a catalyst bed.8. A tray support insert to support a tray within the reactor chamber of a chemical reactor claim 6 , the reactor chamber having an interior surface with a support shoulder formed thereon claim ...

Подробнее
Номер записи: 59
28-06-2018 дата публикации

Systems and methods for catalyst screens in selective catalytic reduction reactors

Номер: US20180178164A1
Автор: Andrew Scott Kline, Jeff Landers Shelton
Принадлежит: Integrated Global Services Inc

A system for use in selective catalytic reduction reactor is disclosed. The system may include a catalyst bed and a screen located close to the catalyst bed in a manner so that flow of flue gas to the catalyst bed contacts the screen before it contacts the catalyst bed. The screen may be adapted to support a weight of at least 400 pounds above the catalyst bed so that the weight is not imposed on the catalyst. The screen may have a plurality of holes across its surface in a manner so that the screen is adapted to change the velocity distribution of the flue gas as it flows through the screen.

Подробнее
Номер записи: 60
15-07-2021 дата публикации

Catalyst Testing Process and Apparatus

Номер: US20210213407A1
Автор: KOSEOGLU Omer Refa
Принадлежит:

A method for analyzing a catalyst in a catalytic reactor that operates under non-isothermal conditions includes the steps of: positioning a catalyst basket within a catalyst bed within the catalytic reactor, the catalyst basket containing catalyst material the forms the catalyst bed; operating the catalytic reactor, the catalyst basket having dimensions such that a temperature difference (ΔT) along an axial direction (height) of the catalyst basket is non-isothermal; and analyzing the catalyst material contained within the catalyst basket. The temperature difference (ΔT) is, in one embodiment, within a range of 1° C. to 40° C. and preferably, within a range of 5° C. to 25° C. 1. A method for analyzing a catalyst in a catalytic reactor that operates under non-isothermal conditions comprising the steps of:positioning a catalyst basket within a catalyst bed within the catalytic reactor, the catalyst basket containing catalyst material the forms the catalyst bed,operating the catalytic reactor, the catalyst basket having dimensions such that a temperature difference (ΔT) along an axial direction of the catalyst basket is non-isothermal; andanalyzing the catalyst material contained within the catalyst basket.2. The method of claim 2 , wherein the temperature difference (ΔT) is within a range of 1° C. to 40° C.3. The method of claim 3 , wherein the temperature difference (ΔT) is within a range of 5° C. to 25° C.4. The method of claim 1 , wherein the catalyst bed has a height (h1) and an internal diameter (ID1) and the catalyst basket has a height (h2) and an internal diameter (ID2) claim 1 , wherein h2/ID2 is between 1 and 300 claim 1 , and wherein h2/h1 is between 0.05 and 1.5. The method of claim 1 , wherein the catalyst basket has an internal diameter of between about 1 cm to 25 cm claim 1 , a height between 25 cm to 300 cm claim 1 , and a wall thickness between 0.1 cm and 1 cm.6. The method of claim 1 , wherein the step of analyzing the catalyst material contained ...

Подробнее
Номер записи: 61
06-07-2017 дата публикации

REACTOR BED VESSEL AND SUPPORT ASSEMBLY

Номер: US20170189876A1
Автор: Tammera Robert F.
Принадлежит:

Vessel and support beam assembly includes a vessel having a cylindrical wall defining an interior chamber having a generally circular shape of diameter D in plan view, and a support assembly disposed within the interior chamber. The support assembly includes an inner hub defining an open central region, and a plurality of spokes extending radially from the inner hub. Each spoke is aligned radially with the cylindrical wall of the vessel and joined thereto. At least one open outer region is defined between circumferentially adjacent spokes. 1. A vessel and support beam assembly , comprising:a vessel having a cylindrical wall defining an interior chamber having a generally circular shape with a diameter in plan view; anda support assembly disposed within the interior chamber, the support assembly comprising at least one hub defining an open central region, the support assembly further comprising a plurality of spokes extending radially from the at least one hub, each spoke aligned radially with the cylindrical wall of the vessel and joined thereto, wherein at least one open outer region is defined between circumferentially adjacent spokes.2. The assembly according to claim 1 , wherein the at least one hub comprising at least two concentric hubs.3. The assembly according to claim 2 , wherein each hub has a polygonal shape in plan view.4. The assembly according to claim 2 , wherein the at least two concentric hubs comprising an inner hub and an outer hub.5. The assembly according to claim 4 , wherein each of the plurality of spokes having a portion extending from the inner hub to the outer hub.6. The assembly according to claim 5 , wherein at least one open outer region is defined between the inner hub claim 5 , the outer hub and circumferentially adjacent spokes claim 5 ,7. The assembly according to claim 6 , wherein the one or more open outer regions have a substantially uniform size and shape.8. The assembly according to claim 5 , wherein each of the plurality of ...

Подробнее
Номер записи: 62
22-07-2021 дата публикации

FLUIDIZED BED REACTOR

Номер: US20210220790A1
Автор: Kim Og Sin, KIM Se Hyun, PARK Hyun Woo, Yoon Kwang Woo
Принадлежит:

A fluidized bed reactor includes: a reactor body; a dispersion plate mounted within the reactor body to partition the inside of the reactor body in a traverse direction and having a plurality of holes through which a reaction gas passes; a nozzle unit mounted on one surface of the dispersion plate to receive an inert gas from outside the reactor and inject the inert gas so as to crush deposits on the dispersion plate; a sensing unit configured to sense the deposits on the dispersion plate; and a control unit configured to control operation of the nozzle unit according to information sensed in the sensing unit. 1. A fluidized bed reactor for manufacturing carbon nanotubes , comprising:a longitudinally-extending reactor body;a dispersion plate mounted within the reactor body to partition the inside of the reactor body in a traverse direction and having a plurality holes; through which a reaction gas passes;a nozzle unit mounted on one surface of the dispersion plate to receive an inert gas from outside the reactor body and inject the inert gas so as to crush deposits on the dispersion plate;a sensing unit configured to sense the deposits on the dispersion plate; anda control unit configured to control an operation of the nozzle unit according to information sensed by the sensing unit.2. The fluidized bed reactor of claim 1 , comprising a plurality of nozzle units claim 1 , spaced apart from each other along a circumference of the dispersion plate.3. The fluidized bed reactor of claim 2 , wherein the nozzle units each comprise:a housing fixed to one surface of the dispersion plate on which the deposits area supply line configured to supply the inert gas from the outside into the housing; andan injection part provided in the housing to inject the inert gas.4. The fluidized bed reactor of claim 3 , wherein two or more injection parts are provided in the housing to inject the inert gas in different directions.5. The fluidized bed reactor of claim 4 , wherein at least one ...

Подробнее
Номер записи: 63
14-07-2016 дата публикации

BASKET-LIKE DEVICE HAVING WALL INSULATION

Номер: US20160200575A1
Автор: Friedrich Holger, GMEINER Wolfgang, KUHN Robert, LENKE Tobias, Olbert Gerhard, WÖLFERT Andreas
Принадлежит: BASF SE

A device D accommodated in a reactor R and containing a gas- and/or liquid-permeable bottom B, in the peripheral region of which is arranged a lateral boundary W which completely surrounds the bottom B and forms a volume V which is partially or completely filled with catalytic and/or non-catalytic moldings, there optionally being located on the side facing the bottom B in the upstream direction at least one noble metal and/or non-noble metal fabric, wherein a thermal insulation layer S is located on at least part of the surface of the inner side of the lateral boundary W of the device D, the material for the thermal insulation layer S being selected from the group consisting of ceramic material, microporous material and silicate fibers. 115.-. (canceled)16. A device that can be accommodated in a reactor , the device comprising:a gas- and/or liquid-permeable bottom;a peripheral region arranged as a lateral boundary that completely surrounds the bottom and forms a volume, the volume which is partially or completely filled with catalytic and/or non-catalytic moldings;a thermal insulation layer positioned on at least part an inner side surface of the lateral boundary of the device, the thermal insulation layer being a microporous, silicatic material that includes highly dispersed silica and opacifiers, and which exhibits no decomposition in a temperature range from 700 to 1100° C., and has a thermal conductivity in a range from 0.04 to 0.09 W/m/K; andoptionally at least one noble metal and/or non-noble metal fabric located on a side facing the bottom in the upstream direction.17. The device of claim 16 , wherein the thermal insulation layer covers 30% to nearly 100% of the inner side surface of the lateral boundary.18. The device of claim 16 , wherein the thermal insulation layer covers at least the lower 30% of the inner side surface of the lateral boundary.19. The device of claim 16 , wherein the cross-section of the bottom is essentially round.20. The device of claim ...

Подробнее
Номер записи: 64
02-10-2014 дата публикации

Apparatus for a Radial-Flow Reactor and Method for Assembly Thereof

Номер: US20140290061A1
Автор: Nathan Siedler
Принадлежит: UOP LLC

An apparatus for a radial-flow reactor according to various approaches includes a catalyst transfer pipe having an inwardly tapered end portion. According to various approaches, a catalyst transfer port of the reactor may include a centering device having an upper tapered surface for facilitating assembly of the reactor. A method according to various aspects includes assembling a radial-flow reactor by installing a catalyst transfer pipe through a catalyst transfer port.

Подробнее
Номер записи: 65
21-07-2016 дата публикации

Packed-bed tubular reactor for heterogeneous exothermic or endothermic catalytic reactions

Номер: US20160208175A1
Автор: Andrea Tasso, Carlo Giorgio Visconti, Enrico Tronconi, Gianpiero Groppi, Roberto Zennaro
Принадлежит: Eni Spa

A reactor for Fischer-Tropsch reaction effected in a three-phase system essentially consisting of a gaseous reagent phase, a liquid reacted phase and a solid catalytic phase, wherein the solid catalytic phase is composed of packed bodies encaged in at least one open-cell foam structure with a high thermal conductivity.

Подробнее
Номер записи: 66
29-07-2021 дата публикации

PROCESS CHAMBER WITH SIDE SUPPORT

Номер: US20210229056A1
Автор: Alvandi-Tabrizi Youness, DiSanto John, Rajavelu Muralidhar Shiva K.T.
Принадлежит:

A process chamber comprising can include a curved upper wall extending longitudinally from a first end portion of the reaction chamber to a second end portion of the reaction chamber. The process chamber can include a curved lower wall cooperating with the curved upper wall to at least partially define an internal cavity, the curved lower wall connected to the curved upper wall from the first end portion to the second end portion at a first side of the reaction chamber and at a second side of the reaction chamber. A rail can extend along an exterior surface of the process chamber from the first end portion to the second end portion, the rail disposed at or near a connection between the curved upper wall and the curved lower wall. 1. A process chamber comprising:a curved upper wall extending longitudinally from a first end portion of the reaction chamber to a second end portion of the reaction chamber; anda curved lower wall cooperating with the curved upper wall to at least partially define an internal cavity, the curved lower wall connected to the curved upper wall from the first end portion to the second end portion at a first side of the reaction chamber and at a second side of the reaction chamber; anda first plurality of first rib support structures disposed along only a portion of the curved upper wall and along only a portion of the curved lower wall at or near a connection between the curved upper wall and the curved lower wall.2. The process chamber of claim 1 , wherein at least one of the curved upper wall and curved lower wall comprises a circular claim 1 , elliptical claim 1 , or polynomial shape.3. The process chamber of claim 1 , wherein at least one of the curved upper wall and curved lower wall comprises a substantially uniform thickness.4. The process chamber of claim 1 , wherein the curved upper wall and curved lower wall are welded together.5. The process chamber of claim 1 , wherein the curved upper wall and curved lower wall are connected ...

Подробнее
Номер записи: 67
25-06-2020 дата публикации

AMMONIA MEMBRANE REACTOR COMPRISING A COMPOSITE MEMBRANE

Номер: US20200197889A1
Автор: Han Jonghee, JANG Seong Cheol, JEONG Hyangsoo, JO Young Suk, KIM Yeong Cheon, NAM Suk Woo, SOHN Hyuntae, YOON Chang Won
Принадлежит:

The present specification discloses a membrane reactor comprising a reaction region; a permeate region; and a composite membrane disposed at a boundary of the reaction region and the permeate region, wherein the reaction region comprises a bed filled with a catalyst for dehydrogenation reaction, wherein the composite membrane comprises a support layer including a metal with a body-centered-cubic (BCC) crystal structure, and a catalyst layer including a palladium (Pd) or a palladium alloy formed onto the support layer, wherein ammonia (NH) is supplied to the reaction region, the ammonia is converted into hydrogen (H) by the dehydrogenation reaction in the presence of the catalyst for dehydrogenation reaction, and the hydrogen permeates the composite membrane and is emitted from the membrane reactor through the permeate region. 1. A membrane reactor comprising a reaction region; a permeate region; and a composite membrane disposed at a boundary of the reaction region and the permeate region ,wherein the reaction region comprises a bed filled with a catalyst for dehydrogenation reaction,wherein the composite membrane comprises a support layer including a metal with a body-centered-cubic (BCC) crystal structure, and a catalyst layer including a palladium (Pd) or a palladium alloy formed onto the support layer,{'sub': 3', '2, 'wherein ammonia (NH) is supplied to the reaction region, the ammonia is converted into hydrogen (H) by the dehydrogenation reaction in the presence of the catalyst for dehydrogenation reaction, and the hydrogen permeates the composite membrane and is emitted from the membrane reactor through the permeate region.'}2. The membrane reactor according to claim 1 , wherein the surface of the support layer is in contact with the reaction region claim 1 , and the surface of the catalyst layer is in contact with the permeate region.3. The membrane reactor according to claim 1 , wherein the metal with the body-centered-cubic (BCC) crystal structure includes ...

Подробнее
Номер записи: 68
05-08-2021 дата публикации

SLOTTED PLATE SCALLOPS

Номер: US20210237015A1
Автор: Bridge Nicholas W., Grott Jeffrey R., Kubacki Megan, Lok Ka L., Maley John Christian, Peters Kenneth D.
Принадлежит:

An apparatus in a radial reactor is described. The apparatus comprises a vertically elongated conduit extending around a circumference of an outer wall of the radial reactor, a vertically oriented cylindrical center pipe in the radial reactor, and a catalyst bed. The conduit comprises an inner face and an outer face and a pair of opposing sides. The inner face has a plurality of slots. The pair of opposing sides have a plurality of slots. There is a riser at a top of the vertically elongated conduit. The catalyst bed is defined by the center pipe and the inner face. 1. An apparatus in a radial reactor comprising:a vertically elongated conduit extending around a circumference of an outer wall of the radial reactor, the conduit comprising an inner face and an outer face and a pair of opposing sides, the inner face having a plurality of slots therein, the pair of opposing sides having a plurality of openings therein, and a riser at one end of the vertically elongated conduit;a vertically oriented cylindrical center pipe in the radial reactor; anda catalyst bed defined by the center pipe and the inner face.2. The apparatus of further comprising:at least one stiffener extending from the inner face to the outer face.3. The apparatus of wherein the at least one stiffener extends vertically less than a height of the vertically elongated conduit.4. The apparatus of wherein the at least one stiffener extends vertically from a bottom of the vertically elongated conduit to a location below a top of the vertically elongated conduit claim 2 , the location being a distance in a range of one half to twice a distance between the inner face and the center pipe.5. The apparatus of wherein the plurality of slots extend substantially across the inner face without interruption.6. The apparatus of wherein the plurality of slots are divided into at least two columns of slots separated by a solid portion of the inner face.7. The apparatus of wherein the inner face has more slots than the ...

Подробнее
Номер записи: 69
13-08-2015 дата публикации

CATALYST ACTIVATOR

Номер: US20150224465A1
Автор: King Alex, Lee Stephen Kevin, Walworth Brent R.
Принадлежит:

The invention relates generally to a catalyst activator, and in particular to a catalyst activator for heat conditioning a catalyst, comprising: a) a vessel for containing a catalyst charge having an internal diameter of at least 1.2 metres and/or an internal volume of at least 5 m; b) a fluidisation grid plate disposed in said vessel, said fluidisation grid plate and having an upper major surface and a lower major surface; c) an array of generally conical depressions in said upper major surface that overlap by less than 17%; and d) an array of holes perforating said fluidisation grid plate, said holes extending from at least some of said generally conical depressions through said lower surface. 123-. (canceled)24. A catalyst activator vessel , comprising:{'sup': '3', 'a) a vessel for containing a catalyst charge having an internal diameter of at least 1.2 metres and/or an internal volume of at least 5 m;'}b) a fluidisation grid plate disposed in said vessel, said fluidisation grid plate and having an upper major surface and a lower major surface;c) an array of generally conical depressions in said upper major surface that overlap by less than 17%; andd) an array of holes perforating said fluidisation grid plate, said holes extending from at least some of said generally conical depressions through said lower surface.25. A catalyst activator according to wherein the array of generally conical depressions are a regular triangular array.26. A catalyst activator according to wherein the array of generally conical depressions overlap by at least 15.5% claim 24 , preferably in the range 15.6% to 16.5%.27. A catalyst activator according to wherein the vessel for containing a catalyst charge has an internal diameter of at least 1.2 metres claim 24 , preferably at least 1.5 metres and/or up to 3 metres claim 24 , and more preferably in the range 1.5 to 2.5 metres.28. A catalyst activator according to wherein the vessel for containing the catalyst charge is an inner vessel ...

Подробнее
Номер записи: 70
11-07-2019 дата публикации

WALL FOR CATALYTIC BEDS OF REACTORS AND METHOD FOR REALIZING THE SAME

Номер: US20190209990A1
Автор: Rizzi Enrico
Принадлежит: Casale SA

Catalytic chemical reactor comprising a perforated wall () adjacent to a supporting wall of the reactor or of a catalytic cartridge contained in the reactor, wherein said perforated wall comprises a plurality of panels () and comprises first sectors () resting on the supporting wall and second sectors () spaced from said supporting wall defining a cavity (), and wherein means are provided for local securing said gas-permeable wall to said supporting wall, said securing means comprising: a plurality of support elements () fixed to the supporting wall () and passing through respective openings () of the first sectors () of the gas-permeable wall and a respective plurality of locking elements () which can be associated with the said support elements, the panels of the gas-permeable wall being gripped between said supporting wall and said locking elements. 1. A catalytic chemical reactor comprising a catalytic bed and a gas-permeable wall facing the catalytic bed , wherein:said gas-permeable wall is an assembly of a plurality of panels and each of said panels extends over an angular sector of said permeable wall;the gas-permeable wall comprises first wall sectors which bear against a supporting wall adjacent to the gas permeable wall, and second wall sectors which are spaced from said supporting wall, the first sectors and the second sectors alternating with each other along the circumferential extension of the permeable wall;wherein said supporting wall is cylindrical or substantially cylindrical,wherein said second wall sectors comprise passages for a gas;the reactor further comprising local securing means of said gas-permeable wall to said supporting wall, said securing means comprising:a plurality of supports firmly fixed to the supporting wall and passing through respective openings of the first sectors of the gas-permeable wall;a respective plurality of locking elements which can be associated with said supports, the panels of the gas-permeable wall being clamped ...

Подробнее
Номер записи: 71
11-08-2016 дата публикации

Reactor with Honeycomb Catalyst for Fuel Reformation

Номер: US20160228838A1
Автор: Hwa-Yuang Tzeng, Meng-Han Huang, Ning-Yih Hsu, Ruey-Yi Lee, Shean-Du Chiou, Su-Hsine Lin, Yi-Sin Chou
Принадлежит: Institute of Nuclear Energy Research

A reactor using honeycomb catalyst is provided for fuel reformation with high activity and heat stability. The reactor comprises a heating tube, a methane gas inlet, a three-way steam inlet and a hydrogen-rich gas outlet. The three-way steam inlet is near to the heating tube for providing heat required for reformation and to reduce power consumption. The heating tube is made of an inconel material so that the overall reaction may be carried out at high temperature. The heating tube is set with a honeycomb carrier of cordierite. The honeycomb carrier is pasted with carbon nanotube and heat-treated to increase internal surface area. The honeycomb carrier has a Pt/CeO 2 /α-Al 2 O 3 catalyst; is placed in the heating tube; and has honeycomb-pores channels parallel to a main axis of the heating tube.

Подробнее
Номер записи: 72
18-07-2019 дата публикации

Reactor And Method For Equilibrium-Limited Reactions

Номер: US20190217267A1
Автор: Albert Jakob, Baldauf Manfred, Meltzer Katharina, Reichert Jenny, TREMEL Alexander, Wasserscheid Peter
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

Various embodiments include a reactor for implementation of equilibrium-limited reactions comprising: a reaction space; a reactant feed; an outlet for reaction products; a device for accommodating catalyst material; and a stirrer device comprising: a hollow shaft with a gas inlet opening at one end of the hollow shaft; a first stirrer paddle with gas exit orifices mounted on the hollow shaft; and a second stirrer paddle mounted on the hollow shaft proximate the device for accommodating the catalyst material. 1. A reactor for implementation of equilibrium-limited reactions , the reactor comprising:a reaction space;a reactant feed;an outlet for reaction products;a device for accommodating catalyst material; anda stirrer device comprising:a hollow shaft with a gas inlet opening at one end of the hollow shaft;a first stirrer paddle with gas exit orifices mounted on the hollow shaft; anda second stirrer paddle mounted on the hollow shaft proximate the device for accommodating the catalyst material.2. The reactor as claimed in claim 1 , further comprising:a liquid phase zone in a lower region of the reaction space; anda gas phase zone above the liquid phase zone;wherein the first stirrer paddle is disposed in the liquid phase zone and the second stirrer paddle is disposed in the gas phase zone.3. The reactor as claimed in claim 2 , further comprising a liquid sorbent disposed in the liquid phase zone.4. The reactor as claimed in claim 1 , wherein the second stirrer paddle comprises a radially conveying stirrer.5. The reactor as claimed in claim 1 , wherein the first stirrer paddle extends radially with respect to the hollow shaft between 20% and 30% of a diameter of the reactor space.6. The reactor as claimed in claim 1 , wherein an effective velocity of the first stirrer paddle is between 5 m/s and 15 m/s.7. A method of implementing equilibrium-limited reactions claim 1 , the method comprising:introducing a catalyst material into a reactor;introducing reactants into the ...

Подробнее
Номер записи: 73
19-08-2021 дата публикации

DEVICE FOR LIMITING OR ELIMINATING THE MIGRATION OF PARTICLES BETWEEN TWO LAYERS

Номер: US20210252468A1
Автор: FRAIOLI Bernard, Gueret Vincent, Monereau Christian, MORINEAU Benjamin, SUN Lian-Ming
Принадлежит:

A device configured to be interposed between a lower layer and an upper layer of particles arranged inside a cylindrical shell, thereby limiting or preventing the migration of particles between the layers. 115.-. (canceled)17. The device as claimed in claim 16 , wherein the overlap between the disk and the ring is at least 25 mm.18. The device as claimed in claim 16 , wherein the ring of fabric comprises metal or polymer filaments with a diameter less than or equal to 200 microns.19. The device as claimed in claim 16 , wherein the sealing disk comprises metal or polymer filaments with a diameter greater than or equal to 200 microns.20. A unit comprising:a cylindrical shell,a lower layer and an upper layer of particles, which layers are superposed in said shell,{'claim-ref': {'@idref': 'CLM-00016', 'claim 16'}, 'a device as defined in interposed between the lower layer and the upper layer of particles.'}21. The unit as claimed in claim 16 , wherein the device defined in covers the entirety of the cross section of the cylindrical shell.22. The unit as claimed in claim 20 , wherein the cylindrical shell comprises:an inlet,an outlet,fluid inlet pipework means coupled to the inlet, andfluid outlet pipework means coupled to the outlet.23. The unit as claimed in claim 20 , wherein the particles are selected from the group consisting of adsorbent particles claim 20 , catalytic particles and inert particles acting as a support claim 20 , serving to distribute the fluids claim 20 , or serving to fill dead volumes.24. The unit as claimed in claim 20 , wherein the unit comprises a catalytic reactor or an adsorber.25. A method for manufacturing a device as claimed in claim 16 , comprising:a) preparing a strip of fabric having meshes of an equivalent diameter smaller than the equivalent diameter of the particles and a length equal to the internal perimeter of the base of the cylindrical shell,b) forming a ring of fabric from the strip of fabric by joining together the two widths ...

Подробнее
Номер записи: 74
25-08-2016 дата публикации

Catalyst support grid

Номер: US20160243516A1
Автор: Gregorio Castillo, Lawrence L. Williams
Принадлежит: Woven Metal Products Inc

A support grid for a chemical reactor fixed bed catalyst. The support grid is formed of (i) a center support cylinder, made in areas of a vertical cylinder, that is assembled within the vessel on the bottom closure head; (ii) a peripheral support skirt located at the outer circumference of the grid, assembled in sections inside the reactor pressure vessel, that sets without welding to bottom closure head of the reactor vessel; (iii) a set of radial support arms that extend from the center support structure to the support skirt to tie these sections into a rigid frame to support the catalyst bed support grid wedges; and (iv) a grid or disc formed of a plurality of catalyst bed support grid wedges or sections that are radial in orientation and are assembled inside the reactor pressure vessel to form a disc that is about 80% of the reactor vessel in outside diameter.

Подробнее
Номер записи: 75
24-08-2017 дата публикации

DUAL GRID CATALYST BASKET AND METHOD OF INDEPENDENTLY SUPPORTING PRIMARY AND SECONDAY CATALYSTS

Номер: US20170239635A1
Автор: Allen F. Burke
Принадлежит: THE ALLOY ENGINEERING COMPANY

An ammonia oxidation catalyst basket design has two support grids. A first grid supports the primary catalyst and a separate, second grid supports the secondary catalyst. This dual grid design separates the two catalysts, and enables the catalysts to be independent of each other. Any interruption in the primary or the secondary catalyst does not impede or adversely impact on the structure or function of the other catalyst. 1. A catalyst basket comprising:a housing;first support grid mounted to the housing for supporting an associated primary catalyst; anda separate, second support grid mounted to the housing independently supporting an associated secondary catalyst.2. The catalyst basket of wherein the second support grid is spaced from the first support grid.3. The catalyst basket of wherein the first support grid includes openings that allow gas flow therethrough.4. The catalyst basket of wherein the second support grid includes openings that allow gas flow therethrough.5. The catalyst basket of wherein a primary catalyst is sealed along a periphery thereof.6. A method of supporting first and second catalysts in a catalyst basket comprising:supplying a housing mounting a first support grid to the housing for supporting a primary catalyst; andmounting a separate, second support grid to the housing for supporting a secondary catalyst and does not support the primary catalyst.7. The method of wherein the first and second support grids are mounted in spaced relation to independently support the primary and secondary catalysts claim 6 , respectively. This application claims the priority benefit of U.S. Provisional Application Ser. No. 62/039,278, filed Aug. 19, 2014, the entire disclosure of which is incorporated herein by reference.The present disclosure relates to a catalyst basket and associated support method, and more particularly to an improved ammonia oxidation catalyst basket design that has two support grids and a method of independently supporting primary and ...

Подробнее
Номер записи: 76
01-08-2019 дата публикации

Cylindrical Wall for Filtering Solid Particles in a Fluid

Номер: US20190232245A1
Автор: Belin Renaud, Nascimento Pedro, Selmen Arnaud
Принадлежит:

A cylindrical wall () for filtering solid particles in a fluid, through which this fluid is likely to circulate, this wall comprising: 113.-. (canceled)14. A cylindrical wall for filtering solid particles in a fluid , through which this fluid is likely to circulate , this wall comprising:a perforated cylinder extending in a longitudinal direction, the cylinder being produced from at least one perforated plate,a grating assembly, of generally cylindrical form, intended to be in contact with the solid particles, the grating assembly and the perforated cylinder being concentric, the grating assembly comprising at least one grating element, the grating element comprising a plurality of wires each extending in the longitudinal direction, andmeans for assembling the at least one grating element so as to form the grating assembly of generally cylindrical form, the assembly means being arranged to ensure fixing of the at least one grating element on the perforated plate that can be dismantled.15. The wall as claimed in claim 14 , wherein the assembly means are arranged to be able to be themselves installed on the perforated cylinder so as to be able to be dismantled.16. The wall as claimed in claim 15 , wherein the assembly means comprise a rod intended to be introduced into or through a perforated plate of the perforated cylinder.17. The wall as claimed in claim 14 , wherein the assembly means being arranged to ensure a dismantlable fixing of at least one grating element on the perforated cylinder claim 14 , the assembly means defining at least one cavity to receive at least a portion of at least one grating element end edge.18. The wall as claimed in claim 17 , wherein the assembly means comprise at least one retention portion intended to cover the end edge of the grating element received in the corresponding cavity claim 17 , characterized in that the assembly means are arranged so that the retention portion exerts a pressure against the end edge in order to press the ...

Подробнее
Номер записи: 77
09-09-2021 дата публикации

Device made of fabric for limiting or preventing the migration of particles between two layers

Номер: US20210275988A1
Автор: Benjamin Morineau, Bernard Fraioli, Christian Monereau, Chuan-Min ZHUO, Eric BIRET, Lian-Ming Sun, Vincent Gueret
Принадлежит: LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude

A device configured to be interposed between a lower layer and an upper layer of particles arranged inside a cylindrical shell, so as to limit or prevent the migration of particles between the layers.

Подробнее
Номер записи: 78
07-09-2017 дата публикации

OXIDATION REACTOR AND PRODUCTION METHOD FOR OXIDE

Номер: US20170252717A1
Автор: MURAI Yoshiyuki, Suzuki Takamasa, Takase Ichiro
Принадлежит: Daicel Corporation

Provided is an oxidation reactor capable of oxidizing hydrocarbons with both good reaction efficiency and good energy efficiency. This oxidation reactor includes a liquid inlet channel, a gas inlet channel, a gas-liquid mixing unit, and a flow reactor. Through the liquid inlet channel, a liquid containing a reaction substrate hydrocarbon is introduced. Through the gas inlet channel, a gas containing oxygen and ozone is introduced. The gas-liquid mixing unit mixes the liquid introduced from the liquid inlet channel with the gas introduced from the gas inlet channel. In the flow reactor, an oxidation catalyst is immobilized or packed. In the oxidation reactor, the flow reactor includes a monolith support and the oxidation catalyst immobilized to or packed in the monolith support. In addition or alternatively, the gas-liquid mixing unit includes a microbubble generator. 1. An oxidation reactor comprising:a liquid inlet channel through which a liquid containing a reaction substrate hydrocarbon is introduced;a gas inlet channel through which a gas containing oxygen and ozone is introduced;a gas-liquid mixing unit that mixes the liquid introduced from the liquid inlet channel with the gas introduced from the gas inlet channel; and a monolith support; and', 'the oxidation catalyst immobilized to or packed in the monolith support, and/or, 'a flow reactor in which an oxidation catalyst is immobilized or packed, the flow reactor comprisingthe gas-liquid mixing unit comprising a microbubble generator.2. The oxidation reactor according to claim 1 , further comprising a gas-liquid separator downstream from the flow reactor.3. The oxidation reactor according to claim 2 , further comprising a circulation channel through which at least part of a liquid separated in the gas-liquid separator is recycled to the gas-liquid mixing unit or to a portion upstream from the gas-liquid mixing unit.4. The oxidation reactor according to claim 2 , further comprisinga circulation channel through ...

Подробнее
Номер записи: 79
04-12-2014 дата публикации

Apparatus for minimizing bypass in ammonia oxidation burners

Номер: US20140353918A1
Автор: Jürgen Fuchs
Принадлежит: THYSSENKRUPP INDUSTRIAL SOLUTIONS AG

A sealing system of a burner basket in an ammonia oxidation burner, wherein the burner basket has a wall that is anchored in the ammonia oxidation burner and the burner basket has a gas-permeable bottom plate, which is placed on further internal fittings of the ammonia oxidation burner and has a peripheral rim, wherein the wall and the gas-permeable bottom plate are not mechanically connected to each other, and so there is a gap between the wall and the peripheral rim of the bottom plate, wherein at the peripheral rim of the bottom plate a rim seal that is made up of individual segments is mounted movably by way of guiding pins and the rim seal projects over the gap between the peripheral rim of the bottom plate to the wall and lies against the wall.

Подробнее
Номер записи: 80
22-09-2016 дата публикации

REACTOR WITH PLATE FIXING SYSTEM

Номер: US20160271578A1
Автор: Lytzen Ulf, Risbjerg Jarlkov Klaus
Принадлежит:

A reactor comprising plate elements () with inter-locking sliding locks () for quick and easy mounting and de-mounting. 1. Reactor for chemical reactions comprising a plate fixing system comprising one or more loose plate elements and one or more base elements fixed to the reactor , said plate elements are positioned in at least one group of plate elements on at least one group of base elements , at least one plate in each group are sliding lock plates , each comprising at least one sliding lock enabling positioning of said sliding lock plate on said base elements in a first direction and thereafter sliding said sliding lock plate in a second direction relative to said base elements to a position where it is locked against movement against the first direction , the sliding lock plates are positioned in a consecutive order where a consecutive sliding lock plate is adapted to be positioned adjacent to a preceding sliding lock plate and with a sliding direction different from the sliding direction of the preceding sliding lock plate , whereby said consecutive sliding lock plate blocks the preceding sliding lock plate against sliding movement.2. Reactor according to claim 1 , wherein the plate elements of each group are located in one level claim 1 , thereby forming an assembled plate.3. Reactor according to claim 1 , wherein the first direction is coaxial with the reactor and the second direction is perpendicular to the reactor axis.4. Reactor according to claim 1 , wherein the sliding direction of any of the consecutive sliding lock plates is perpendicular to the sliding direction of its preceding sliding lock plate.5. Reactor according to claim 1 , wherein all plate elements in a plate element group except one are sliding lock plates claim 1 , and one plate element is a fixing plate which has at least one fixing means claim 1 , the fixing plate is adapted to be positioned adjacent to and in a consecutive order after the last of the consecutive order sliding lock ...

Подробнее
Номер записи: 81
08-10-2015 дата публикации

APPARATUS FOR PREVENTING MICROPARTICLE AND DUST MIGRATION IN LAYERED BED PURIFICATION DEVICES

Номер: US20150283495A1
Автор: da Costa Pereira Stenio, Murphy Daimhin P., Shogren Peter K., Srivastava Abneesh
Принадлежит: ENTEGRIS, INC.

The invention relates to an expandable media-retaining ring comprising an expandable ring and a gas permeable media-retaining membrane. The invention further relates to a gas purifier device comprising two or more beds of purification media and an expandable media-retaining ring. The expandable media-retaining ring is secured by radial force in the device, and prevents migration of purification media into adjacent beds, thereby improving the performance of the purifier device, and also enabling the device to be used in any orientation. 1. A gas purifier , comprising:a housing having a fluid inlet and a fluid outlet, the inlet and outlet fluidly connected through a purifier bed contained in the housing, the purifier bed comprising:a first bed of purification media;a second bed of purification media; anda media-retaining porous membrane separating the first bed of purification media and the second bed of purification media, wherein the media-retaining membrane is secured within the housing at its edges by an expandable ring comprising an inner circumference, an outer circumference and a locking mechanism for expanding and retaining the ring by radial force against an inner wall of the housing when the locking mechanism is engaged.2. The gas purifier of claim 1 , wherein the media-retaining porous membrane is a gas-permeable membrane having a pore size to prevent particles of purification media from passing therethrough.3. The gas purifier of or claim 1 , wherein the media-retaining porous membrane is in intimate and retaining contact with a first bed of purification media.4. The gas purifier of any one of to claim 1 , wherein the media-retaining porous membrane is fixed between a surface of the expandable ring and a surface of a downstream bed of purification media.5. The gas purifier of any one of to claim 1 , wherein the first bed of purification media and the second bed of purification media are compositionally the same or compositionally different.6. The gas ...

Подробнее
Номер записи: 82
27-09-2018 дата публикации

PRODUCT CONTAINER FOR A FLUIDIZED BED INSTALLATION AND FLUIDIZED BED INSTALLATION

Номер: US20180272305A1
Автор: Kaufmann Harald
Принадлежит:

The present invention relates to a product container for a fluidized bed installation () having a product container wall (), a product container bottom (), a product container opening () opposite the product container bottom (), a distributor bottom () between the product container bottom () and the product container opening (14), and at least one volume-reducing element () which can be releasably attached to the distributor bottom (), on that side (-) of the distributor bottom () oriented toward the product container opening (), and by means of which the free volume of the product container () between the distributor bottom () and the product container opening () is reduced. 11. A product container for a fluidized bed installation () , the product container comprising:{'b': '12', 'a product container wall (),'}{'b': '13', 'a product container bottom (),'}{'b': 14', '13, 'a product container opening () opposite the product container bottom (),'}{'b': 20', '13', '14, 'a distributor bottom () between the product container bottom () and the product container opening (), and'}{'b': 40', '20', '20', '1', '20', '14', '10', '20', '14, 'at least one volume-reducing element () which is configured to be releasably attached to the distributor bottom (), on a side (-) of the distributor bottom () oriented toward the product container opening (), and by which a free volume of the product container () between the distributor bottom () and the product container opening () is reduced.'}210. The product container () according to claim 1 ,{'b': 40', '42', '41, 'in which the volume-reducing element () has a bottom region () and a casing (), and'}{'b': 42', '40', '20, 'in which the bottom region () of the volume-reducing element () is configured to be releasably attached to the distributor bottom ().'}310. The product container () according to claim 1 , in which the volume-reducing element is conical.410404341424020. The product container () according to claim 2 , in which the volume- ...

Подробнее
Номер записи: 83
20-08-2020 дата публикации

CHEMICAL REACTOR WITH ADIABATIC CATALYTIC BEDS AND AXIAL FLOW

Номер: US20200261876A1
Автор: Rizzi Enrico
Принадлежит:

Axial reactor for exothermic or endothermic chemical reactions, comprising at least a first catalytic bed () and a second catalytic bed () operating in series and at least one heat exchanger () between the two catalytic beds, wherein the first catalytic bed has a collector bottom () having a box-like structure with flat and parallel walls, which are gas-permeable, and a plurality of parallel channels () defined between the walls, wherein a first series of said channels collects the gaseous flow exiting the catalytic bed and passing through the first wall, said gaseous flow is directed towards the heat exchanger, and the flow exiting the exchanger is directed towards the second catalytic bed via a second series of said channels of the collector bottom. 115-. (canceled)16. A reactor for carrying out exothermic or endothermic chemical reactions , the reactor comprising:an axial stack of catalytic beds including at least a first catalytic bed and a second catalytic bed operating in series with axial flow, the first and second catalytic beds being stacked one next to the other in an axial direction of the reactor, wherein a gaseous flow exiting the first catalytic bed is subjected to a further reaction stage in the second catalytic bed; andat least one heat exchanger located sideways relative to the axial stack of catalytic beds, said at least one heat exchanger being arranged to cool or heat, via indirect heat exchange with a heating or cooling medium, said gaseous flow exiting the first catalytic bed before entry into the second catalytic bed;wherein the first catalytic bed has a collector bottom having a box-like structure, including a first wall and a second wall spaced and parallel with respect to each other, and a plurality of parallel channels that are defined between said first and second walls;wherein said first wall is exposed to the gaseous flow exiting the first catalytic bed, and the second wall communicates with a gas inlet of the second catalytic bed, and ...

Подробнее
Номер записи: 84
15-10-2015 дата публикации

REACTORS AND METHODS FOR PRODUCING SOLID CARBON MATERIALS

Номер: US20150291424A1
Автор: Noyes Dallas B.
Принадлежит:

A reactor for producing a solid carbon material comprising at least one reaction chamber configured to produce a solid carbon material and water vapor through a reduction reaction between at least one carbon oxide and at least one gaseous reducing material in the presence of at least one catalyst material. Additional reactors, and related methods of producing a solid carbon material, and of forming a reactor for producing a solid carbon material are also described. 1. A reactor for producing a solid carbon material , comprising:at least one reaction chamber configured to produce a solid carbon material and water vapor through a reduction reaction between at least one carbon oxide and at least one gaseous reducing material in the presence of at least one catalyst material; andat least one cooling chamber operatively communicating with the at least one reaction chamber and configured to condense the water vapor produced in the at least one reaction chamber, wherein the cooling chamber is configured to have an operating temperature of less than or equal to about 50° C.2. The reactor of claim 1 , wherein the at least one reaction chamber is configured to produce the solid carbon material through at least one of a Bosch reaction claim 1 , a Boudouard reaction claim 1 , and a methane reduction reaction.3. The reactor of claim 1 , wherein the at least one reaction chamber is configured to withstand an operating temperature greater than or equal to about 450° C.4. (canceled)5. (canceled)6. The reactor of claim 1 , further comprising a heat exchange zone operatively associated each of at least one effluent gas line and at least one return gas line extending between the at least one reaction chamber and the at least one cooling chamber claim 1 , and configured to exchange heat between the at least one effluent gas line and the at least one return gas line.7. The reactor of claim 1 , further comprising at least one prime mover operatively associated with each of the at least ...

Подробнее
Номер записи: 85
04-10-2018 дата публикации

VESSEL FOR REMOVING HYDROCARBONS ON CATALYST

Номер: US20180280908A1
Автор: KIM Minwoo, Kron Kyle L., Sandacz Michael S.
Принадлежит:

A vessel provides for removing hydrocarbons from a catalyst. In an FCC unit, the vessel includes first and second sections. The first section includes at least one grid having a plurality of intersecting members and openings therebetween. The second section includes structured packing such as a plurality of ribbons. Grids are supported by pipes that are supported by the second section. 1. A vessel for removing hydrocarbons from catalyst , the vessel comprising:a catalyst inlet configured to receive a stream of spent catalyst particles, at least some of the spent catalyst particles comprising entrained hydrocarbons;a first section, the first section including a first grid and a second grid, each grid including at least one opening to allow catalyst to pass there through, a pipe secured to the first grid and supporting the second grid, wherein the pipe comprises three segments: a first segment secured to the first grid, an intermediate segment secured to the first segment and a second segment secured to the second grid; andan outlet configured to pass catalyst particles from the vessel.2. The vessel of wherein the first grid and the second grid in the first section include a plurality of openings to allow catalyst to pass therethrough.3. (canceled)4. The vessel of wherein segments are secured to each other with a sleeved connection.5. The vessel of wherein the first segment has an upper leg that passes above the first grid and is secured to the intermediate segment and a lower leg that passes below the first grid.6. The vessel of wherein the lower leg is secured to a pipe that is supported on a second section that may comprise a structural packing.7. The vessel of wherein the first segment is welded to a plate that is welded to the first grid.8. The vessel of further comprising at least one gas inlet for admitting a gas disposed below the second section.9. The vessel of further comprising a second section claim 8 , the second section including a structured packing ...

Подробнее
Номер записи: 86
03-09-2020 дата публикации

CATALYST COLUMN AND THERMAL CRACKING SYSTEM

Номер: US20200277530A1
Автор: WANG Hsiao-Nan
Принадлежит:

According to one aspect of the invention, a catalyst tower is provided, which comprises a gas inlet and a catalyst holding plate set therein. The gas inlet is the opening where the catalyst tower and the upstream piping connects with one another. The distance between the gas inlet and the catalyst holding plate is directly proportional to the difference in diameter between the catalyst tower and the upstream piping. 1. An apparatus , comprising:means for receiving a gas stream; anda plate for holding a bed of chemicals, wherein said plate is set in said means and said bed of chemicals is used for treating said gas stream;wherein a diameter of said means is equal to or greater than 4.5 times that of an opening on said means through which said gas stream enters said means.2. The apparatus according to claim 1 , further comprising means for generating said gas stream from a reactant selected from a group consisting of the following claim 1 , or combinations thereof: waste plastic claim 1 , waste tire claim 1 , and waste oil.3. The apparatus according to claim 1 , wherein said plate is apart from said opening by a distance claim 1 , the ratio of said distance to the diameter of said means having a value equal to or greater than 0.4.4. The apparatus according to claim 1 , wherein said treatment of said gas stream is reformation or purification of said gas stream.5. (canceled)6. The apparatus according to claim 1 , further comprising means for generating said gas stream claim 1 , the ratio of the capacity of said gas-receiving means to said gas-generating means having a value between 1/15 and ⅛.7. The apparatus according to claim 6 , wherein said gas-generating means is a rotary reactor.8. The apparatus according to claim 1 , further comprising means for generating said gas stream claim 1 , the ratio of the diameter of said gas-receiving means to said gas-generating means having a value between ⅓ and 1.9. The apparatus according to claim 1 , wherein said gas-generating ...

Подробнее
Номер записи: 87
19-09-2019 дата публикации

SYSTEMS AND METHODS FOR IMPROVING FLOW IN RADIAL FLOW REACTOR

Номер: US20190282985A1
Автор: EBERHARDT Eugene, HILLENBURG Russell, HUTCHINSON Matthew, LAMBERT Fabian, LE-GOFF Pierre-Yves
Принадлежит:

A radial flow distribution system, a radial flow reactor, and components thereof, including one or more of a scallop, center pipe, and/or outer basket. Each of the scallop, the center pipe, and the outer basket has openings formed therein. wherein the sizes or the shapes of the openings vary along the length or the width of the reactor components such that the openings define a pattern in configured to manipulate and optimize the distribution of flow of feedstock out of the components and through the reactor to maximize the efficiency of the catalyst reaction thereof. 1. A scallop for use in a radial flow reactor , comprising:an elongated flow distribution conduit having a top end and an opposing bottom end, a length extending between the top and bottom ends, opposing sides, and a width extending between the opposing sides;a plurality of openings formed in the conduit through a thickness thereof, each of the plurality of openings having a size and a shape,wherein the sizes or the shapes of the plurality of openings vary along the length or the width of the conduit such that the plurality of openings define a pattern in the conduit configured to manipulate and optimize the distribution of flow of feedstock out of the scallop and through the reactor to maximize the efficiency of the catalyst reaction thereof.2. The scallop of claim 1 , wherein the sizes of the plurality of openings vary along the length and the width of the conduit.3. The scallop of claim 1 , wherein the shapes of the plurality of openings vary along the length and the width of the conduit.4. The scallop of claim 1 , wherein the sizes and the shapes of the plurality of openings vary along the length of the conduit.5. The scallop of claim 1 , wherein the sizes and the shapes of the plurality of openings vary along the width of the conduit.6. The scallop of claim 1 , wherein the sizes and the shapes of the plurality of openings vary along the length and width of the conduit.7. The scallop of claim 1 , ...

Подробнее
Номер записи: 88
27-10-2016 дата публикации

GASKET FREE GRID MODULES FOR CATALYST SUPPORT AND A MODULAR SYSTEM HEREOF

Номер: US20160310923A1
Автор: Bergstrøm Jesper Rune
Принадлежит: Haldor Topsoe A/S

A grid module () for a catalyst support comprising one or more sides arranged with a module connecting part () to engage in a tongue/groove connection with a matching receiving connecting part () on an external structure (). 1. A grid module for a catalyst support comprising one or more sides arranged with a module connecting part to engage in a tongue/groove connection with a matching receiving connecting part on an external structure.2. A grid module according to claim 1 , wherein the formed tongue/groove connection provides a gasket free connection.3. A grid module according to claim 1 , wherein the grid module is a manway grid module or a regular grid module.4. Manway grid module according to claim 1 , wherein the external structure is a manway frame claim 1 , beam wall and/or second manway grid module thereby providing at least one gasket free seal between the module connecting part and the receiving connecting part on one or more external structures.5. Manway grid module according to claim 1 , comprising a first claim 1 , second and/or third type of module connecting part.6. Manway grid module according to claim 1 , comprising a free side arranged to abut a second manway grid module.7. Manway grid module according to claim 1 , comprisingone or two free sides arranged to abut a second and/or third manway grid modulethree or two sides each arranged with a module connecting part to engage in a tongue/groove with a matching receiving connecting part on an external structure.8. Manway grid module according to claim 1 , wherein the first claim 1 , second and/or third type of module connecting part has a U shape or is a protruding structure claim 1 , such as a l shape or L shape.9. Manway grid module according to claim 1 , comprising means for fastening the manway grid module.10. Regular grid module according to claim 1 , wherein the external structure is a manway frame claim 1 , beam wall and/or second regular grid module thereby providing at least one gasket free ...

Подробнее
Номер записи: 89
24-09-2020 дата публикации

PREPARATION OF RED IRON OXIDE PIGMENT

Номер: US20200299515A1
Автор: CZAPLIK Waldemar, Holtmann Udo
Принадлежит: LANXESS DEUTSCHLAND GMBH

The present invention relates to an improved process for producing iron oxide red pigments by the Penniman process using nitrate (also referred to as nitrate process or direct red process) and apparatuses for carrying out the process. 1. Apparatus for producing haematite from iron(II) nitrate , haematite nuclei , iron , and oxygen , the apparatus comprising:a reaction vessel for contacting iron(II) nitrate, haematite nuclei, iron, and oxygen to produce haematite pigment and nitrogen oxide,support for iron, the support comprising a base and an outer delimitation disposed around at least a portion of the base,a holder retaining the support relative to the reaction vessel,at least one gas introduction unit disposed relative to the support for introducing oxygen-containing gas to contact iron supported in the support,an inlet for introducing a liquid reaction medium of iron(II) nitrate solution, haematite nucleus suspension, and optionally water into the reaction vessel,an outlet for removal of a nitrogen oxide-containing stream (NOX), andan outlet for removal of haematite pigment suspension.2. The apparatus for producing haematite according to claim 1 , wherein the outer delimitation comprises an impermeable wall claim 1 , a wall provided with openings claim 1 , mesh rods claim 1 , a sieve claim 1 , or a combination thereof.3. The apparatus for producing haematite according to claim 1 , wherein the outer delimitation has a vertical height dimension extending from the base and comprising a lower region and an upper region claim 1 , and is impermeable to the liquid reaction mixture in at least the lower region claim 1 , preferably from 10 to 50% of the height of the delimitation claim 1 , measured from base.4. The apparatus for producing haematite according to claim 3 , wherein the outer delimitation is permeable to the liquid reaction mixture in the upper region claim 3 , preferably from 50 to 90% of the height of the delimitation claim 3 , measured from base.5. The ...

Подробнее
Номер записи: 90
02-11-2017 дата публикации

RADIAL BED REACTOR ALLOWING THE USE OF A SMALL QUANTITY OF CATALYST

Номер: US20170313950A1
Автор: BAZER-BACHI Frederic, DELEAU Fabrice, LE GOFF Pierre-Yves, LEMAIRE Eric, PAGOT Alexandre, Papon Gérard, SANCHEZ Eric
Принадлежит: IFP ENERGIES NOUVELLES

The present invention describes a type of radial bed reactor which can allow a small quantity of catalyst to be used. Application to a regenerative reforming process reactor. 1110117181225254251371917113. A reactor with a radial flow of feed and a gravitational flow of catalyst constituted by an assembly of substantially identical modules (M) enclosed in a single shell () and distributed in a regular manner inside said shell in a circle , each module (M) having a height to diameter ratio in the range 7 to 11 , and each module (M) having means () for introducing catalyst located in the upper portion , and means () for evacuation of said catalyst , located in the lower portion () of the shell () , and a means for introducing feed via upper central pipework () and means for evacuation of effluents via lower central pipework () , each module being in the shape of a cylinder delimited by a substantially vertical outer wall () and a substantially vertical inner wall () , the two walls () and () being assembled so as to define an annular zone () containing the catalyst , and the outer () and inner () walls of each module being permeable to the gaseous feed and to gaseous effluents , and being constituted by a Johnson or equivalent type screen , said modules being positioned vertically in a generally symmetrical manner with respect to the centre of the shell () , and the effluents from each module leaving via the central collector () of each module which communicates with the lower portion () of the shell () , the inner volume () of the shell () and the lower volume () of the shell () being separated by a floor () which forms a seal between the two volumes and also serves to support the modules (M) , and the thickness of the radial bed of each module (M) being in the range 10 to 400 mm , and preferably in the range 50 to 250 mm , and the number of modules being in the range 5 to 10.2. A process for catalytic reforming of a gasoline type cut using the reactor according to ...

Подробнее
Номер записи: 91
09-11-2017 дата публикации

Scallop assembly and reactor

Номер: US20170320033A1
Автор: Bryan J. EGOLF, Emadoddin Abbasi, Jeffrey Grott, Ka Lok, Michael J. Vetter
Принадлежит: UOP LLC

A radial flow reactor is described. It includes a vertically extending vessel, an outer conduit, and a central conduit. At least a portion of the outer conduit and the central conduit comprises a screen. A particle retaining space is defined by at least one of the vessel, the central conduit, and the outer conduit, and it communicates with the screen of the outer conduit and the central conduit. An inlet distribution ring is positioned on the outer conduit. The inlet distribution ring comprises a ring having at least one opening and at least one vertically extending riser tube. One end of the riser tube is sealed to the ring, and the other end is positioned inside the outer conduit.

Подробнее
Номер записи: 92
09-11-2017 дата публикации

REACTOR AND MULTIFUNCTIONAL RISER AND DOWNER SIMULATOR INCORPORATING THE SAME

Номер: US20170320036A1
Автор: de Lasa Hugo
Принадлежит:

A reactor comprises a reactor vessel defining a confined reactor volume, a support assembly extending about a periphery of the confined reactor volume, a basket positioned within the reactor vessel and supported by the support assembly, the basket having an interior surface and an exterior surface, a downflow zone being defined between the exterior surface of the basket and an interior surface of the confined reactor volume, an inlet screen positioned adjacent to one end of the interior surface and an outlet screen positioned adjacent to an opposite end of the interior surface, an upflow zone defined between the inlet screen and outlet screen, the inlet screen and the outlet screen containing a quantity of particulate catalyst, and a circulating device positioned above said upflow zone and configured to continuously circulate fluid upwardly though said upflow zone and downwardly through said downflow zone, the support assembly and the basket configured to promote the formation of a fluid vortex within a portion of the downflow zone. 1. A reactor comprising:a reactor vessel defining a confined reactor volume;a support assembly extending about a periphery of the confined reactor volume;a basket positioned within the reactor vessel and supported by the support assembly, the basket having an interior surface and an exterior surface, a downflow zone being defined between the exterior surface of the basket and an interior surface of the confined reactor volume;an inlet screen positioned adjacent to one end of the interior surface and an outlet screen positioned adjacent to an opposite end of the interior surface, an upflow zone defined between the inlet screen and outlet screen, the inlet screen and the outlet screen containing a quantity of particulate catalyst; anda circulating device positioned above said upflow zone and configured to continuously circulate fluid upwardly though said upflow zone and downwardly through said downflow zone;the support assembly and the ...

Подробнее
Номер записи: 93
17-11-2016 дата публикации

MOLDING A BED PLATE AND ITS USE

Номер: US20160333120A1
Автор: Jiang Yan, Ker Victoria, McBrien Robert Kevin, Quaiaittini Robert Joseph Louis, Zimmerman Veronica Rose
Принадлежит: NOVA CHEMICALS (INTERNATIONAL) S.A.

A fluid dynamic model having at least 5,000,000 cells of the portion of a gas phase reactor from the exit of the condenser to a half a reactor diameter above the bed plate is useful in determining the design of the bottom surface or support structure for a bed plate to minimize liquid pooling below and above the bed plate when operating in condensing mode. 1. A grid supporting a circular bed plate for a gas phase polymerization reactor having a fluidized bed of polymeric particles , a discharge port within half the diameter of the bed plate above the bed plate , said grid comprising a series of vertical baffles traversing the underside of the bed plate dividing the area below the bed plate into a series of cells so that from below the grid an upwardly directed jet comprising monomers , ballast gas and from 3 to 40 weight % of dispersed condensed hydrocarbons having a velocity sufficient to fluidize the bed , does not experience a raceway across the bed plate and the gas phase , and the condensed phase are substantially homogeneously distributed over not less than 80% of the area of the available flow path through the bed plate.2. The grid according to claim 1 , wherein the cells are contiguous and located around the center point of the bed plate3. The grid according to claim 2 , wherein the cells are trapezoidal or hexagonal except where the baffles meet the reactor wall; wherein that portion of the wall of the cell is an arc having the radius of curvature of the reactor wall.4. The grid according to claim 2 , wherein the cells are diamond shaped.5. A method of operating a fluidized bed reactor in condensed mode having in cooperating arrangement a bed plate and a grid of a fixed design according to claim 1 , comprising on a computer : a) building a three dimensional model of the reactor from outlet of the heat exchanger to the top of the lowest discharge port, including the deflector plate, the bed plate having descending vertical baffles and a fluid zone ...

Подробнее
Номер записи: 94
17-10-2019 дата публикации

NAPHTHA CATALYTIC CRACKING METHOD WITH COMPARTMENTS IN THE TURBULENT FLUIDISED BED REACTOR

Номер: US20190314781A1
Автор: CLOUPET Ann, Raynal Ludovic
Принадлежит: IFP ENERGIES NOUVELLES

The present invention describes a turbulent fluidized bed reactor having a diameter of between 6 and 25 meters and an H/D ratio of between 0.1 and 1, and exhibiting a compartmentation with a central zone, this reactor been particularly well suited to the catalytic cracking of light cuts for the purpose of producing major intermediates of petrochemistry and in particular light olefins. 1) A compartmentalized fluidized bed reactor for the catalytic cracking of light cuts for the purpose of producing major intermediates of petrochemistry and in particular light olefins , said reactor having a diameter of between 6 and 25 meters , preferably of between 10 and 20 meters , and an H/D ratio of between 0.1 and 1 , and preferably of between 0.2 and 0.6 , and exhibiting compartments obtained by vertical radial partitions extending substantially over the entire height H of the reactor , and being provided with a central cylindrical chamber which communicates by overflowing with a or the said compartments , the ratio of the diameter of the central chamber to the diameter of the reactor being between 0.1 and 0.5 and preferably between 0.15 and 0.3 , the upper part of the reactor located above the compartments making possible the separation of the fluidization gas and of the catalytic solid particles , and the compartments of said reactor being fluidized at a fluidization velocity of between 0.5 and 1.5 m/s , preferably between 0.7 and 1.3 m/s and more preferably between 0.8 and 1 m/s.2) The compartmentalized fluidized bed reactor as claimed in claim 1 , in which the number of substantially identical radial compartments is between 2 and 12 claim 1 , preferably between 3 and 9 claim 1 , so that the height to equivalent diameter (H/Deq) ratio of each compartment is greater than 0.5.3) The compartmentalized fluidized bed reactor as claimed in claim 1 , in which all of the compartments are fluidized by means of a single ring which covers the whole of the reactor.4) A process for the ...

Подробнее
Номер записи: 95
08-11-2018 дата публикации

Element for Anchoring an Anti-Erosion Coating to an Inner Wall of a Chamber of an FCC Unit

Номер: US20180320974A1
Автор: Decker Sébastien, Simon Hubert
Принадлежит:

The invention relates to a metal element () for anchoring an anti-erosion coating that is intended to be fastened alone in an isolated manner to a metal wall or assembled with other identical anchoring elements. The anchoring element () has an edge () for fastening to said metal wall and an anchoring body firmly attached to the fastening edge () and having an upper edge () that is away from the fastening edge and intended to be covered by a composite material of concrete type. A section of this upper edge (), which is not intended to be juxtaposed and assembled with an upper edge of an identical anchoring element, is provided with a delimiting tab () in order to delimit a height of composite material that must cover the upper edge () of said anchoring element, said delimiting tab () having a delimiting edge () that is a predetermined distance away from a plane defined by the upper edge () of the anchoring element. 114.-. (canceled)16. The process of wherein the delimiting tab is positioned substantially in the middle of the upper edge of the anchoring body.17. The process of further comprising forming the anchoring body by folding or bending a flat strip along an axis perpendicular to a longitudinal direction (L) of the strip claim 15 , in the plane of the strip claim 15 , and in that the delimiting tab extends in the continuation of the flat strip perpendicular to the longitudinal direction.18. The process of wherein the anti-erosion coating comprises at least one of the anchoring elements embedded in the composite material claim 15 , the composite material extending up to the delimiting edge of the delimiting tab claim 15 , above the upper edge of the at least one anchoring element claim 15 , so that the composite material covers or is flush with the delimiting edge of the delimiting tab and so that the remaining part of each anchoring element is covered by a layer of the composite material claim 15 , the thickness of which is at least equal to the predetermined ...

Подробнее
Номер записи: 96
31-10-2019 дата публикации

CHEMICAL REACTOR WITH CATALYST SUPPORT SYSTEM

Номер: US20190329206A1
Автор: Christensen Thomas SandahI, Hansen Anders Helbo, Jørgensen Magnus Møller, Lansen Johannes Ruben
Принадлежит: Haldor Topsoe A/S

The invention relates to a chemical reactor comprising at least one catalyst support system and anti-blocking means arranged around and above a reactor opening, which prevents catalyst or other reactor parts to enter or exit a reactor opening.

Подробнее
Номер записи: 97
07-12-2017 дата публикации

METHOD FOR ARRANGING A PACKING IN A BURNER AND BURNER BASKET FOR A BURNER

Номер: US20170348660A1
Автор: Fuchs Jürgen, Ruthardt Klaus, Siefert Rolf
Принадлежит:

A method for disposing a bed comprising particles in a burner through which a gas can flow, more particularly in a burner basket of an ammonia oxidation burner, where the particles are disposed such that the bed has a greater flow resistance in an edge region of the burner than in an inner region of the burner. Further, a burner basket for a burner may have a bed comprising particles, wherein the particles are disposed such that the bed has a greater flow resistance in an edge region of the burner basket than in an inner region of the burner basket. 116.-. (canceled)17. A method for disposing a bed comprising particles in a burner through which a gas can flow , the method comprising disposing the particles such that a flow resistance of the bed is greater at an edge region of the burner than at an inner region of the burner.18. The method of comprising disposing the bed comprising particles in a burner basket of the burner claim 17 , wherein the burner is an ammonia oxidation burner.19. The method of wherein the bed has a greater bulk density in the edge region than in the inner region.20. The method of wherein the bed comprises small particles and large particles claim 17 , wherein the small particles have a smaller diameter than the large particles.21. The method of wherein the small particles have a diameter in a range from 1 mm to 10 mm.22. The method of wherein the large particles have a diameter in a range from 5 mm to 50 mm.23. The method of wherein more of the small particles than the large particles are disposed in the edge region of the burner claim 22 , wherein more of the large particles than the small particles are disposed in the inner region of the burner.24. The method of wherein more of the small particles than the large particles are disposed in the edge region claim 22 , wherein two layers of particles are disposed in the inner region claim 22 , wherein a lower layer of the two layers has more of the small particles than the large particles and an ...

Подробнее
Номер записи: 98
07-11-2019 дата публикации

PROCESS FOR THE PREPARATION OF A DRIED POWDER

Номер: US20190339007A1
Автор: Chatterjee Michael, Kuehl Reinhard, Prang Harald, SEIFERT Alexander
Принадлежит: BASELL POLYOLEFINE GMBH

A method for preparing a dried powder is provided. The facility includes a first drying chamber having a heating element and a second drying chamber. A mixture of powder and diluent is introduced into the first drying chamber. A pre-dried powder is transferred from the first drying chamber into the second drying chamber. A dried powder, including a recirculated amount of powder and a discharge amount of powder, is formed in the second drying chamber. The recirculated amount of the dried powder is transferred by a conveyor device from the second drying chamber into the first drying chamber. The discharge amount of the dried powder is discharged from the second drying chamber. 1. A method for the preparation of a dried powder in a facility comprising preparation steps:wherein the facility comprisesi) a first drying chamber with a first upper end section, an opposing first lower end section and a first chamber side wall, the first drying chamber being a back-mixing drying chamber comprising a first heating element, a first powder inlet for receiving a mixture of powder and diluent, a first powder outlet for exiting a pre-dried powder, a first gas inlet and a first gas outlet,ii) a second drying chamber with a second upper end section, an opposing second lower end section and a second chamber side wall, the second drying chamber comprising a second heating element, a second powder inlet for receiving the pre-dried powder, a second powder outlet for exiting a dried powder comprising a recirculated amount of dried powder and a discharge amount of dried powder, a second gas inlet and a second gas outlet,iii) a first powder passage for transferring the pre-dried powder from the first drying chamber into the second drying chamber, having the first powder outlet connected to the second powder inlet or being identical with the second powder inlet,iv) a conveyor device and optionally a second powder passage transferring the recirculated amount of dried powder from the second ...

Подробнее
Номер записи: 99
29-10-2020 дата публикации

Catalyst support systems for ammonia oxidation burners

Номер: US20200338518A1
Автор: Andre De Smet, Kevin Dring, Kjetil BAKLI, Marcel DELHAYE, Oystein Nirisen
Принадлежит: Yara International ASA

Catalyst support systems for ammonia oxidation burners comprising a top flange and an inner wall. The top flange comprises a planar section, a rounded outer edge, and a rounded inner edge, the rounded outer edge and the rounded inner edge being separated by the planar section. The inner wall comprises a carrier plate, a gauze shelf, and a bottom plate shelf, the gauze shelf and the bottom plate shelf being attached to the carrier plate. The carrier plate is attached to the top flange by means of the rounded inner edge.

Подробнее
Номер записи: 100