Patents by Inventor Xiang-Dong Peng
Xiang-Dong Peng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12091319Abstract: A process for producing syngas that uses the syngas product from an oxygen-fired reformer to provide all necessary heating duties, which eliminates the need for a fired heater. Without the flue gas stream leaving a fired heater, all of the carbon dioxide produced by the reforming process is concentrated in the high-pressure syngas stream, allowing essentially complete carbon dioxide capture.Type: GrantFiled: June 21, 2023Date of Patent: September 17, 2024Assignee: Air Products and Chemicals, Inc.Inventors: Xiang-Dong Peng, Yu Zhang, Tori Dawn Courtney
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Patent number: 12091320Abstract: A process for producing syngas that uses the syngas product from a partial oxidation reactor to provide all necessary heating duties, which eliminates the need for a fired heater. Soot is removed from the syngas using a dry filter to avoid a wet scrubber quenching the syngas stream and wasting the high-quality heat. Without the flue gas stream leaving a fired heater, all of the carbon dioxide produced by the reforming process is concentrated in the high-pressure syngas stream, allowing essentially complete carbon dioxide capture.Type: GrantFiled: June 21, 2023Date of Patent: September 17, 2024Assignee: Air Products and Chemicals, Inc.Inventors: Xiang-Dong Peng, Henry Choisun Chan, Kelly Danielle Aguilar, Shihong Yan, Qiong Zhou, Shylaja Gowda
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Patent number: 11897769Abstract: A process for producing syngas that uses the syngas product from an oxygen-fired reformer to provide all necessary heating duties, which eliminates the need for a fired heater. Without the flue gas stream leaving a fired heater, all of the carbon dioxide produced by the reforming process is concentrated in the high-pressure syngas stream, allowing essentially complete carbon dioxide capture.Type: GrantFiled: August 20, 2021Date of Patent: February 13, 2024Assignee: Air Products and Chemicals, Inc.Inventors: Xiang-Dong Peng, Yu Zhang, Tori Dawn Courtney
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Publication number: 20230331548Abstract: A process for producing syngas that uses the syngas product from an oxygen-fired reformer to provide all necessary heating duties, which eliminates the need for a fired heater. Without the flue gas stream leaving a fired heater, all of the carbon dioxide produced by the reforming process is concentrated in the high-pressure syngas stream, allowing essentially complete carbon dioxide capture.Type: ApplicationFiled: June 21, 2023Publication date: October 19, 2023Applicant: Air Products and Chemicals, Inc.Inventors: Xiang-Dong Peng, Yu Zhang, Tori Dawn Courtney
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Publication number: 20230331549Abstract: A process for producing syngas that uses the syngas product from a partial oxidation reactor to provide all necessary heating duties, which eliminates the need for a fired heater. Soot is removed from the syngas using a dry filter to avoid a wet scrubber quenching the syngas stream and wasting the high-quality heat. Without the flue gas stream leaving a fired heater, all of the carbon dioxide produced by the reforming process is concentrated in the high-pressure syngas stream, allowing essentially complete carbon dioxide capture.Type: ApplicationFiled: June 21, 2023Publication date: October 19, 2023Applicant: Air Products and Chemicals, Inc.Inventors: Xiang-Dong Peng, Henry Choisun Chan, Kelly Danielle Aguilar, Shihong Yan, Qiong Zhou, Shylaja Gowda
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Patent number: 11753299Abstract: A process for producing syngas that uses the syngas product from a partial oxidation reactor to provide all necessary heating duties, which eliminates the need for a fired heater. Soot is removed from the syngas using a dry filter to avoid a wet scrubber quenching the syngas stream and wasting the high-quality heat. Without the flue gas stream leaving a fired heater, all of the carbon dioxide produced by the reforming process is concentrated in the high-pressure syngas stream, allowing essentially complete carbon dioxide capture.Type: GrantFiled: August 20, 2021Date of Patent: September 12, 2023Assignee: Air Products and Chemicals, Inc.Inventors: Xiang-Dong Peng, Henry Choisun Chan, Kelly Danielle Aguilar, Shihong Yan, Qiong Zhou, Shylaja Gowda
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Publication number: 20230059012Abstract: A process for producing syngas that uses the syngas product from an oxygen-fired reformer to provide all necessary heating duties, which eliminates the need for a fired heater. Without the flue gas stream leaving a fired heater, all of the carbon dioxide produced by the reforming process is concentrated in the high-pressure syngas stream, allowing essentially complete carbon dioxide capture.Type: ApplicationFiled: August 20, 2021Publication date: February 23, 2023Applicant: Air Products and Chemicals, Inc.Inventors: XIANG-DONG PENG, YU ZHANG, TORI DAWN COURTNEY
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Publication number: 20230053522Abstract: A process for producing syngas that uses the syngas product from a partial oxidation reactor to provide all necessary heating duties, which eliminates the need for a fired heater. Soot is removed from the syngas using a dry filter to avoid a wet scrubber quenching the syngas stream and wasting the high-quality heat. Without the flue gas stream leaving a fired heater, all of the carbon dioxide produced by the reforming process is concentrated in the high-pressure syngas stream, allowing essentially complete carbon dioxide capture.Type: ApplicationFiled: August 20, 2021Publication date: February 23, 2023Applicant: Air Products and Chemicals, Inc.Inventors: XIANG-DONG PENG, Henry Choisun Chan, Kelly Danielle Aguilar, Shihong Yan, Qiong Zhou, Shylaja Gowda
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Patent number: 11391457Abstract: A segregated steam system and process in a hydrogen production facility wherein boiler feed water is heated by indirect heat exchange with a reformate, the heated boiler feed water is used to heat water condensate formed from the reformate, the heated water condensate is passed to a first steam drum for producing steam for a reformer feed gas mixture, and a second portion of the heated boiler feed water is passed to a second steam drum for producing steam for export.Type: GrantFiled: August 2, 2019Date of Patent: July 19, 2022Assignee: Air Products and Chemicals, Inc.Inventor: Xiang-Dong Peng
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Patent number: 11173443Abstract: Pressure swing adsorption process for reducing fluctuations in the flow rate of tail gas from the adsorption unit and reducing fluctuations in the stoichiometric oxidant flow rate required to completely combust the tail gas in a reformer furnace. Constant flow rate and constant fuel property can be obtained by intelligent mixing designs.Type: GrantFiled: August 21, 2019Date of Patent: November 16, 2021Assignee: Air Products and Chemicals, Inc.Inventors: Xiang-Dong Peng, Elizabeth M. D'Addio, Jeffrey Raymond Hufton, Yu Zhang
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Patent number: 11052365Abstract: Reactive diluent fluid (22) is introduced into a stream of synthesis gas (or “syngas”) produced in a heat-generating unit such as a partial oxidation (“POX”) reactor (12) to cool the syngas and form a mixture of cooled syngas and reactive diluent fluid. Carbon dioxide and/or carbon components and/or hydrogen in the mixture of cooled syngas and reactive diluent fluid is reacted (26) with at least a portion of the reactive diluent fluid in the mixture to produce carbon monoxide-enriched and/or solid carbon depleted syngas which is fed into a secondary reformer unit (30) such as an enhanced heat transfer reformer in a heat exchange reformer process. An advantage of the invention is that problems with the mechanical integrity of the secondary unit arising from the high temperature of the syngas from the heat-generating unit are avoided.Type: GrantFiled: January 9, 2019Date of Patent: July 6, 2021Inventors: Shoou-I Wang, John Michael Repasky, Shankar Nataraj, Xiang-Dong Peng
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Publication number: 20210053009Abstract: Pressure swing adsorption process for reducing fluctuations in the flow rate of tail gas from the adsorption unit and reducing fluctuations in the stoichiometric oxidant flow rate required to completely combust the tail gas in a reformer furnace. Constant flow rate and constant fuel property can be obtained by intelligent mixing designs.Type: ApplicationFiled: August 21, 2019Publication date: February 25, 2021Applicant: Air Products and Chemicals, Inc.Inventors: XIANG-DONG PENG, ELIZABETH M. D'ADDIO, JEFFREY RAYMOND HUFTON, YU ZHANG
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Publication number: 20210033275Abstract: A segregated steam system and process in a hydrogen production facility wherein boiler feed water is heated by indirect heat exchange with a reformate, the heated boiler feed water is used to heat water condensate formed from the reformate, the heated water condensate is passed to a first steam drum for producing steam for a reformer feed gas mixture, and a second portion of the heated boiler feed water is passed to a second steam drum for producing steam for export.Type: ApplicationFiled: August 2, 2019Publication date: February 4, 2021Applicant: Air Products and Chemicals, Inc.Inventor: XIANG-DONG PENG
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Publication number: 20200215511Abstract: Reactive diluent fluid (22) is introduced into a stream of synthesis gas (or “syngas”) produced in a heat-generating unit such as a partial oxidation (“POX”) reactor (12) to cool the syngas and form a mixture of cooled syngas and reactive diluent fluid. Carbon dioxide and/or carbon components and/or hydrogen in the mixture of cooled syngas and reactive diluent fluid is reacted (26) with at least a portion of the reactive diluent fluid in the mixture to produce carbon monoxide-enriched and/or solid carbon depleted syngas which is fed into a secondary reformer unit (30) such as an enhanced heat transfer reformer in a heat exchange reformer process. An advantage of the invention is that problems with the mechanical integrity of the secondary unit arising from the high temperature of the syngas from the heat-generating unit are avoided.Type: ApplicationFiled: January 9, 2019Publication date: July 9, 2020Inventors: Shoou-I Wang, John Michael Repasky, Shankar Nataraj, Xiang-Dong Peng
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Patent number: 10450195Abstract: Reactive diluent fluid (22) is introduced into a stream of synthesis gas (or “syngas”) produced in a heat-generating unit such as a partial oxidation (“PDX”) reactor (12) to cool the syngas and form a mixture of cooled syngas and reactive diluent fluid. Carbon dioxide and/or carbon components and/or hydrogen in the mixture of cooled syngas and reactive diluent fluid is reacted (26) with at least a portion of the reactive diluent fluid in the mixture to produce carbon monoxide-enriched and/or solid carbon depleted syngas which is fed into a secondary reformer unit (30) such as an enhanced heat transfer reformer in a heat exchange reformer process. An advantage of the invention is that problems with the mechanical integrity of the secondary unit arising from the high temperature of the syngas from the heat-generating unit are avoided.Type: GrantFiled: April 20, 2015Date of Patent: October 22, 2019Assignee: Niquan Energy LLCInventors: Shoou-I Wang, John Michael Repasky, Shankar Nataraj, Xiang-Dong Peng
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Publication number: 20190284047Abstract: Reactive diluent fluid (22) is introduced into a stream of synthesis gas (or “syngas”) produced in a heat-generating unit such as a partial oxidation (“POX”) reactor (12) to cool the syngas and form a mixture of cooled syngas and reactive diluent fluid. Carbon dioxide and/or carbon components and/or hydrogen in the mixture of cooled syngas and reactive diluent fluid is reacted (26) with at least a portion of the reactive diluent fluid in the mixture to produce carbon monoxide-enriched and/or solid carbon depleted syngas which is fed into a secondary reformer unit (30) such as an enhanced heat transfer reformer in a heat exchange reformer process. An advantage of the invention is that problems with the mechanical integrity of the secondary unit arising from the high temperature of the syngas from the heat-generating unit are avoided.Type: ApplicationFiled: January 9, 2019Publication date: September 19, 2019Inventors: Shoou-I Wang, John Michael Repasky, Shankar Nataraj, Xiang-Dong Peng
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Publication number: 20170115246Abstract: Method and apparatus for determining a heating value of a sample hydrocarbon-containing mixture having hydrocarbons and non-hydrocarbons as mixture components. The sample is reacted with an excess amount of oxidant gas in a reaction chamber to form a product gas containing residual oxygen. The molecular weight of the sample is measured and the residual oxygen concentration of the product gas is measured. The heating value is calculated from the measurements of the molecular weight and the residual oxygen concentration. Pure component hydrocarbon gases may be used to calibrate the system.Type: ApplicationFiled: June 14, 2016Publication date: April 27, 2017Applicant: Air Products and Chemicals, Inc.Inventors: Blaine Edward Herb, Matthew H. MacConnell, Xiang-Dong Peng
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Patent number: 9586819Abstract: Process for producing hydrogen where multiple streams are heated in parallel with reformate that has passed from the shift reactor. Each of the multiple streams are heated from a temperature below the dew point of the reformate to a temperature above the dew point of the reformate by reformate that is cooled from a temperature above the dew point of the reformate to a temperature below the dew point of the reformate. The multiple streams can include two or more of water condensate, boiler feed water, hydrocarbon feedstock, and pressure swing adsorption unit by-product gas.Type: GrantFiled: May 15, 2015Date of Patent: March 7, 2017Assignee: Air Products and Chemicals, Inc.Inventors: Jianguo Xu, Xiang-Dong Peng
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Publication number: 20160332876Abstract: Process for producing hydrogen where multiple streams are heated in parallel with reformate that has passed from the shift reactor. Each of the multiple streams are heated from a temperature below the dew point of the reformate to a temperature above the dew point of the reformate by reformate that is cooled from a temperature above the dew point of the reformate to a temperature below the dew point of the reformate. The multiple streams can include two or more of water condensate, boiler feed water, hydrocarbon feedstock, and pressure swing adsorption unit by-product gas.Type: ApplicationFiled: May 15, 2015Publication date: November 17, 2016Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Jianguo Xu, Xiang-Dong Peng
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Patent number: 9309130Abstract: Process for producing a hydrogen-containing product and one or more liquid water products using catalytic steam-hydrocarbon reforming. In the process, a portion of the make-up water is heated by the reformate and another portion of the make-up water is heated by the combustion product gas prior to introducing the make-up water to a deaerator. Water in the combustion product gas is condensed to form a liquid water product. The process may be integrated with a thermal water desalination process.Type: GrantFiled: October 23, 2013Date of Patent: April 12, 2016Assignee: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Xiang-Dong Peng, Derek Miller, Geoffrey Colling Achilles, Xianming Jimmy Li