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Небесная энциклопедия

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

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Мониторинг СМИ

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

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Применить Всего найдено 11. Отображено 11.
27-07-2017 дата публикации

CATALYST FOR LOW TEMPERATURE SLURRY BED FISCHER-TROPSCH SYNTHESIS

Номер: US20170209852A1
Автор: Dawid J. Duvenhage, Christine Schmidt, Mark Still, Khalid Azzam, Karl C. Kharas, Sara Hunegnaw, Olga Ionkina, Ray J. Huang, Harold A. Wright, DUVENHAGE DAWID J, SCHMIDT CHRISTINE, STILL MARK, AZZAM KHALID, KHARAS KARL C, HUNEGNAW SARA, IONKINA OLGA, HUANG RAY J, WRIGHT HAROLD A, Duvenhage Dawid J., Schmidt Christine, Still Mark, Azzam Khalid, Kharas Karl C., Hunegnaw Sara, Ionkina Olga, Huang Ray J., Wright Harold A.
Принадлежит:

A method for controllably producing a hematite-containing Fischer-Tropsch catalyst by combining an iron nitrate solution with a precipitating agent solution at a precipitating temperature and over a precipitation time to form a precipitate comprising iron phases; holding the precipitate from at a hold temperature for a hold time to provide a hematite containing precipitate; and washing the hematite containing precipitate via contact with a wash solution and filtering, to provide a washed hematite containing catalyst. The method may further comprise promoting the washed hematite containing catalyst with a chemical promoter; spray drying the promoted hematite containing catalyst; and calcining the spray dried hematite containing catalyst to provide a calcined hematite-containing Fischer-Tropsch catalyst. 1. A hematite-containing Fischer-Tropsch catalyst , comprising iron , copper and potassium in a weight ratio of 100 Fe:1-10 Cu:1-10 KO:0-35 SiO , wherein the iron in the catalyst comprises from about 1% weight percent to about 70 weight percent hematite.2. The hematite-containing Fischer-Tropsch catalyst of claim 1 , wherein the average hematite crystallite size is in the range of from about 1 to about 70 nm.3. The hematite-containing Fischer-Tropsch catalyst of claim 1 , wherein the mean hematite crystallite size is in the range of from about 1 to about 50 nm.4. The hematite-containing Fischer-Tropsch catalyst of claim 1 , wherein the mean hematite crystallite size is in the range of from about 1 to about 35 nm.5. The hematite-containing Fischer-Tropsch catalyst of having a TPR of less than or equal to about 245° C.6. The hematite-containing Fischer-Tropsch catalyst of having a TPR of less than or equal to about 240° C.7. The hematite-containing Fischer-Tropsch catalyst of having a TPR of less than or equal to about 235° C.8. The hematite-containing Fischer-Tropsch catalyst of having a TPR of less than or equal to about 230° C.9. The hematite-containing Fischer- ...

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Номер записи: 1
20-12-2016 дата публикации

Protected Fischer-Tropsch catalyst and method of providing same to a Fischer-Tropsch process

Номер: US0009522372B2
Автор: Harold A. Wright, Belma Demirel, Sergio Mohedas, Bahman Rejai, Ray J. Huang, Deena Ferdous, Jesse W. Taylor, Dawid J. Duvenhage, Sara L. Rolfe, WRIGHT HAROLD A, DEMIREL BELMA, MOHEDAS SERGIO, REJAI BAHMAN, HUANG RAY J, FERDOUS DEENA, TAYLOR JESSE W, DUVENHAGE DAWID J, ROLFE SARA L, Wright Harold A., Demirel Belma, Mohedas Sergio, Rejai Bahman, Huang Ray J., Ferdous Deena, Taylor Jesse W., Duvenhage Dawid J., Rolfe Sara L.
Принадлежит: RES USA, LLC, RENTECH INC, RES USA LLC, RENTECH, INC.

A method of preparing a spray dried catalyst by combining spray dried catalyst particles with wax so the spray dried catalyst particles are coated with wax, yielding wax coated catalyst particles, and shaping the wax coated catalyst to provide shaped wax coated catalyst. A method of activating Fischer-Tropsch catalyst particles containing oxides by contacting the catalyst particles with a reducing gas in an activation vessel to produce an activated catalyst, wherein contacting is performed in the absence of a liquid medium under activation conditions. A system for activating a Fischer-Tropsch catalyst containing an activation reactor configured to introduce an activation gas to a fixed or fluidized bed of the Fischer-Tropsch catalyst in the absence of a liquid medium and at least one separation device configured to separate a gas stream comprising entrained catalyst fines having an average particle size below a desired cutoff size from the activation reactor.

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Номер записи: 2
16-05-2017 дата публикации

Protected Fischer-Tropsch catalyst and method of providing same to a Fischer-Tropsch process

Номер: US0009649610B2
Автор: Harold A. Wright, Belma Demirel, Sergio Mohedas, Bahman Rejai, Ray J. Huang, Deena Ferdous, Jesse W. Taylor, Dawid J. Duvenhage, Sara L. Rolfe, WRIGHT HAROLD A, DEMIREL BELMA, MOHEDAS SERGIO, REJAI BAHMAN, HUANG RAY J, FERDOUS DEENA, TAYLOR JESSE W, DUVENHAGE DAWID J, ROLFE SARA L, Wright Harold A., Demirel Belma, Mohedas Sergio, Rejai Bahman, Huang Ray J., Ferdous Deena, Taylor Jesse W., Duvenhage Dawid J., Rolfe Sara L.
Принадлежит: RES USA, LLC, RES USA LLC

A method of preparing a spray dried catalyst by combining spray dried catalyst particles with wax so the spray dried catalyst particles are coated with wax, yielding wax coated catalyst particles, and shaping the wax coated catalyst to provide shaped wax coated catalyst. A method of activating Fischer-Tropsch catalyst particles containing oxides by contacting the catalyst particles with a reducing gas in an activation vessel to produce an activated catalyst, wherein contacting is performed in the absence of a liquid medium under activation conditions. A system for activating a Fischer-Tropsch catalyst containing an activation reactor configured to introduce an activation gas to a fixed or fluidized bed of the Fischer-Tropsch catalyst in the absence of a liquid medium and at least one separation device configured to separate a gas stream comprising entrained catalyst fines having an average particle size below a desired cutoff size from the activation reactor.

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Номер записи: 3
06-06-2017 дата публикации

Catalyst for low temperature slurry bed Fischer-Tropsch synthesis

Номер: US0009669390B2
Автор: Dawid J. Duvenhage, Christine Schmidt, Mark Still, Khalid Azzam, Karl C. Kharas, Sara Hunegnaw, Olga Ionkina, Ray J. Huang, Harold A. Wright, DUVENHAGE DAWID J, SCHMIDT CHRISTINE, STILL MARK, AZZAM KHALID, KHARAS KARL C, HUNEGNAW SARA, IONKINA OLGA, HUANG RAY J, WRIGHT HAROLD A, Duvenhage Dawid J., Schmidt Christine, Still Mark, Azzam Khalid, Kharas Karl C., Hunegnaw Sara, Ionkina Olga, Huang Ray J., Wright Harold A.
Принадлежит: RES USA, LLC, RES USA LLC

A method for controllably producing a hematite-containing Fischer-Tropsch catalyst by combining an iron nitrate solution with a precipitating agent solution at a precipitating temperature and over a precipitation time to form a precipitate comprising iron phases; holding the precipitate from at a hold temperature for a hold time to provide a hematite containing precipitate; and washing the hematite containing precipitate via contact with a wash solution and filtering, to provide a washed hematite containing catalyst. The method may further comprise promoting the washed hematite containing catalyst with a chemical promoter; spray drying the promoted hematite containing catalyst; and calcining the spray dried hematite containing catalyst to provide a calcined hematite-containing Fischer-Tropsch catalyst.

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Номер записи: 4
07-11-2013 дата публикации

PROTECTED FISCHER-TROPSCH CATALYST AND METHOD OF PROVIDING SAME TO A FISCHER-TROPSCH PROCESS

Номер: US20130296448A1
Автор: Demirel Belma, Duvenhage Dawid J., Ferdous Deena, Huang Ray J., MOHEDAS SERGIO, Rejai Bahman, Rolfe Sara L., Taylor Jesse W., WRIGHT Harold A.
Принадлежит:

A method of preparing a spray dried catalyst by combining spray dried catalyst particles with wax so the spray dried catalyst particles are coated with wax, yielding wax coated catalyst particles, and shaping the wax coated catalyst to provide shaped wax coated catalyst. A method of activating Fischer-Tropsch catalyst particles containing oxides by contacting the catalyst particles with a reducing gas in an activation vessel to produce an activated catalyst, wherein contacting is performed in the absence of a liquid medium under activation conditions. A system for activating a Fischer-Tropsch catalyst containing an activation reactor configured to introduce an activation gas to a fixed or fluidized bed of the Fischer-Tropsch catalyst in the absence of a liquid medium and at least one separation device configured to separate a gas stream comprising entrained catalyst fines having an average particle size below a desired cutoff size from the activation reactor. 1. A method of preparing a spray dried catalyst , the method comprising:combining spray dried catalyst particles with wax such that the spray dried catalyst particles are coated with wax, yielding wax coated catalyst particles; andshaping the wax coated catalyst to provide shaped wax coated catalyst.2. The method of wherein the spray dried catalyst is a Fischer-Tropsch catalyst.3. The method of wherein the spray dried catalyst is a precipitated iron-based catalyst.4. The method of further comprising fluidizing the spray dried catalyst particles claim 1 , to provide a fluidized bed.5. The method of wherein fluidizing comprises introducing an inert gas into a vessel containing the spray dried catalyst particles.6. The method of wherein the vessel is a fixed bed or fluidized bed reactor.7. The method of further comprising activating the catalyst.8. The method of wherein activating comprises contacting the catalyst particles with an activation gas at an activation temperature.9. The method of wherein the activation ...

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Номер записи: 5
07-01-2016 дата публикации

CATALYST FOR LOW TEMPERATURE SLURRY BED FISCHER-TROPSCH SYNTHESIS

Номер: US20160001267A1
Автор: Azzam Khalid, Duvenhage Dawid J., Huang Ray J., Hunegnaw Sara, Ionkina Olga, Kharas Karl C., Schmidt Christine, Still Mark, WRIGHT Harold A.
Принадлежит:

A method for controllably producing a hematite-containing Fischer-Tropsch catalyst by combining an iron nitrate solution with a precipitating agent solution at a precipitating temperature and over a precipitation time to form a precipitate comprising iron phases; holding the precipitate from at a hold temperature for a hold time to provide a hematite containing precipitate; and washing the hematite containing precipitate via contact with a wash solution and filtering, to provide a washed hematite containing catalyst. The method may further comprise promoting the washed hematite containing catalyst with a chemical promoter; spray drying the promoted hematite containing catalyst; and calcining the spray dried hematite containing catalyst to provide a calcined hematite-containing Fischer-Tropsch catalyst. 1. A method for controllably producing a hematite-containing Fischer-Tropsch catalyst , the method comprising:(a) combining an iron nitrate solution with a precipitating agent solution at a precipitating temperature and over a precipitation time to form a precipitate comprising iron phases, wherein the precipitating temperature is less than or equal to about 95° C.; wherein the iron nitrate, the precipitating agent solution, or both, comprise a refractory material;(b) holding the precipitate from (a) at a hold temperature for a hold time to provide a hematite containing precipitate; and(c) washing the hematite containing precipitate from (b) via contact with a wash solution and filtering, to provide a washed hematite containing Fischer-Tropsch catalyst.2. The method of further comprising adding a hematite promoter to control the amount of hematite in the hematite-containing Fischer-Tropsch catalyst.3. The method of wherein the hematite-containing Fischer-Tropsch catalyst comprises from about 0.5 to about 80 weight percent hematite.4. The method of wherein the hematite promoter is selected from the group consisting of basic silica claim 2 , acidic silica claim 2 , ...

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Номер записи: 6
22-01-2015 дата публикации

PROTECTED FISCHER-TROPSCH CATALYST AND METHOD OF PROVIDING SAME TO A FISCHER-TROPSCH PROCESS

Номер: US20150023842A1
Автор: Demirel Belma, Duvenhage Dawid J., Ferdous Deena, Huang Ray J., MOHEDAS SERGIO, Rejai Bahman, Rolfe Sara L., Taylor Jesse W., WRIGHT Harold A.
Принадлежит:

A method of preparing a spray dried catalyst by combining spray dried catalyst particles with wax so the spray dried catalyst particles are coated with wax, yielding wax coated catalyst particles, and shaping the wax coated catalyst to provide shaped wax coated catalyst. A method of activating Fischer-Tropsch catalyst particles containing oxides by contacting the catalyst particles with a reducing gas in an activation vessel to produce an activated catalyst, wherein contacting is performed in the absence of a liquid medium under activation conditions. A system for activating a Fischer-Tropsch catalyst containing an activation reactor configured to introduce an activation gas to a fixed or fluidized bed of the Fischer-Tropsch catalyst in the absence of a liquid medium and at least one separation device configured to separate a gas stream comprising entrained catalyst fines having an average particle size below a desired cutoff size from the activation reactor. 1. A system for activating a Fischer-Tropsch catalyst , the system comprising:an activation reactor configured to introduce an activation gas to a fixed or fluidized bed of the Fischer-Tropsch catalyst in the absence of a liquid medium; andat least one separation device configured to separate a gas stream comprising entrained catalyst fines having an average particle size below a desired cutoff size from the activation reactor.2. The system of wherein the activation reactor is a fluidized bed reactor.3. The system of wherein the cutoff size is about 10 μm.4. The system of wherein at least one of the at least one separation devices is located at least partially within the activation reactor.5. The system of wherein the at least one separation device located at least partially within the activation reactor is selected from cyclones and filters.6. The system of comprising a cyclone at least partially within the activation reactor.7. The system of further comprising a filtration unit external to the activation ...

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Номер записи: 7
05-07-2012 дата публикации

Protected Fischer-Tropsch catalyst and method of providing same to a Fischer-Tropsch process

Номер: AU2011207784A1
Автор: Bahman Rejai, Belma Demirel, Dawid J. Duvenhage, Deena Ferdous, Harold A. Wright, Jesse W. Taylor, Ray J. Huang, Sara L. Rolfe, Sergio Mohedas
Принадлежит: Res USA LLC

A method of preparing a spray dried catalyst by combining spray dried catalyst particles with wax so the spray dried catalyst particles are coated with wax, yielding wax coated catalyst particles, and shaping the wax coated catalyst to provide shaped wax coated catalyst. A method of activating Fischer-Tropsch catalyst particles containing oxides by contacting the catalyst particles with a reducing gas in an activation vessel to produce an activated catalyst, wherein contacting is performed in the absence of a liquid medium under activation conditions. A system for activating a Fischer-Tropsch catalyst containing an activation reactor configured to introduce an activation gas to a fixed or fluidized bed of the Fischer-Tropsch catalyst in the absence of a liquid medium and at least one separation device configured to separate a gas stream comprising entrained catalyst fines having an average particle size below a desired cutoff size from the activation reactor.

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Номер записи: 8
28-07-2011 дата публикации

Protected fischer-tropsch catalyst and method of providing same to a fischer-tropsch process

Номер: WO2011090819A2
Автор: Bahman Rejai, Belma Demirel, Dawid J. Duvenhage, Deena Ferdous, Harold A. Wright, Jesse W. Taylor, Ray J. Huang, Sara L. Rolfe, Sergio Mohedas
Принадлежит: RENTECH, INC.

A method of preparing a spray dried catalyst by combining spray dried catalyst particles with wax so the spray dried catalyst particles are coated with wax, yielding wax coated catalyst particles, and shaping the wax coated catalyst to provide shaped wax coated catalyst. A method of activating Fischer-Tropsch catalyst particles containing oxides by contacting the catalyst particles with a reducing gas in an activation vessel to produce an activated catalyst, wherein contacting is performed in the absence of a liquid medium under activation conditions. A system for activating a Fischer-Tropsch catalyst containing an activation reactor configured to introduce an activation gas to a fixed or fluidized bed of the Fischer-Tropsch catalyst in the absence of a liquid medium and at least one separation device configured to separate a gas stream comprising entrained catalyst fines having an average particle size below a desired cutoff size from the activation reactor.

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Номер записи: 9
05-01-2012 дата публикации

Protected fischer-tropsch catalyst and method of providing same to a fischer-tropsch process

Номер: WO2011090819A3
Автор: Bahman Rejai, Belma Demirel, Dawid J. Duvenhage, Deena Ferdous, Harold A. Wright, Jesse W. Taylor, Ray J. Huang, Sara L. Rolfe, Sergio Mohedas
Принадлежит: RENTECH, INC.

A method of preparing a spray dried catalyst by combining spray dried catalyst particles with wax so the spray dried catalyst particles are coated with wax, yielding wax coated catalyst particles, and shaping the wax coated catalyst to provide shaped wax coated catalyst. A method of activating Fischer-Tropsch catalyst particles containing oxides by contacting the catalyst particles with a reducing gas in an activation vessel to produce an activated catalyst, wherein contacting is performed in the absence of a liquid medium under activation conditions. A system for activating a Fischer-Tropsch catalyst containing an activation reactor configured to introduce an activation gas to a fixed or fluidized bed of the Fischer-Tropsch catalyst in the absence of a liquid medium and at least one separation device configured to separate a gas stream comprising entrained catalyst fines having an average particle size below a desired cutoff size from the activation reactor.

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Номер записи: 10
28-11-2012 дата публикации

Protected fischer-tropsch catalyst and method of providing same to a fischer-tropsch process

Номер: EP2525908A2
Автор: Bahman Rejai, Belma Demirel, Dawid J. Duvenhage, Deena Ferdous, Harold A. Wright, Jesse W. Taylor, Ray J. Huang, Sara L. Rolfe, Sergio Mohedas
Принадлежит: Rentech Inc

A method of preparing a spray dried catalyst by combining spray dried catalyst particles with wax so the spray dried catalyst particles are coated with wax, yielding wax coated catalyst particles, and shaping the wax coated catalyst to provide shaped wax coated catalyst. A method of activating Fischer-Tropsch catalyst particles containing oxides by contacting the catalyst particles with a reducing gas in an activation vessel to produce an activated catalyst, wherein contacting is performed in the absence of a liquid medium under activation conditions. A system for activating a Fischer-Tropsch catalyst containing an activation reactor configured to introduce an activation gas to a fixed or fluidized bed of the Fischer-Tropsch catalyst in the absence of a liquid medium and at least one separation device configured to separate a gas stream comprising entrained catalyst fines having an average particle size below a desired cutoff size from the activation reactor.

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Номер записи: 11