Patents by Inventor Xukun Luo
Xukun Luo 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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Publication number: 20240067537Abstract: A combined vessel comprises a stripping section for removing acid gases from a sour water stream and a direct contact heat exchanger section for heating a graywater stream in order to improve heat and mass transfer in the treatment and recycle of water streams for a gasification process.Type: ApplicationFiled: October 20, 2023Publication date: February 29, 2024Applicant: Air Products and Chemicals, Inc.Inventors: Yanlai Zhang, Xukun Luo
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Patent number: 11827535Abstract: A combined vessel comprises a stripping section for removing acid gases from a sour water stream and a direct contact heat exchanger section for heating a graywater stream in order to improve heat and mass transfer in the treatment and recycle of water streams for a gasification process.Type: GrantFiled: August 31, 2021Date of Patent: November 28, 2023Assignee: Air Products and Chemicals, Inc.Inventors: Yanlai Zhang, Xukun Luo
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Patent number: 11639824Abstract: An apparatus and method for cooling a gas stream is provided comprising at least one heat exchanger in which a gas stream is cooled against a cooling liquid, whereby the cooling liquid temperature increases from a first temperature to a second temperature, at least one air cooler for cooling the cooling liquid after passing though the at least one heat exchanger, surface area of the at least one air cooler being designed to decrease temperature of the cooling liquid to the first temperature; a pump; and conduits to form a closed-circuit for the cooling liquid to pass continuously through the at least one heat exchanger and the at least one air cooler. The ratio of surface area of the at least one air cooler to the surface area of the at least one heat exchanger is optionally 12 or lower, and the difference of temperature between the second temperature and first temperature being greater than 15° C.Type: GrantFiled: April 30, 2020Date of Patent: May 2, 2023Assignee: Air Products and Chemicals, Inc.Inventors: Todd M. Moyle, Xukun Luo
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Publication number: 20230060258Abstract: A combined vessel comprises a stripping section for removing acid gases from a sour water stream and a direct contact heat exchanger section for heating a graywater stream in order to improve heat and mass transfer in the treatment and recycle of water streams for a gasification process.Type: ApplicationFiled: August 31, 2021Publication date: March 2, 2023Applicant: Air Products and Chemicals, Inc.Inventors: Yanlai Zhang, Xukun Luo
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Patent number: 11460246Abstract: Xenon and/or krypton is separated from a liquid oxygen stream comprising oxygen and xenon and/or krypton in a process comprising providing at least a portion of the liquid oxygen stream as a reflux liquid to the top of a rare gas recovery column operated at a pressure of between 5 to 25 bara, vaporizing a reboiler liquid in the reboiling zone in the bottom of the rare gas recovery column to produce a mixture of a rising vapor and a xenon and/or krypton-enriched liquid stream; and contacting the rising vapor with the reflux liquid in at least one distillation zone of the column to effect stripping xenon and/or krypton from the rising vapor to the reflux liquid. The process provides a recovery of xenon of greater than 90% and a krypton recovery of 15% to 90%.Type: GrantFiled: December 18, 2019Date of Patent: October 4, 2022Assignee: Air Products and Chemicals, Inc.Inventors: Xukun Luo, Alan D. Berger, Donn Michael Herron
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Publication number: 20210341222Abstract: An apparatus and method for cooling a gas stream is provided comprising at least one heat exchanger in which a gas stream is cooled against a cooling liquid, whereby the cooling liquid temperature increases from a first temperature to a second temperature, at least one air cooler for cooling the cooling liquid after passing though the at least one heat exchanger, surface area of the at least one air cooler being designed to decrease temperature of the cooling liquid to the first temperature; a pump; and conduits to form a closed-circuit for the cooling liquid to pass continuously through the at least one heat exchanger and the at least one air cooler. The ratio of surface area of the at least one air cooler to the surface area of the at least one heat exchanger is optionally 12 or lower, and the difference of temperature between the second temperature and first temperature being greater than 15° C.Type: ApplicationFiled: April 30, 2020Publication date: November 4, 2021Applicant: Air Products and Chemicals, Inc.Inventors: Todd M. Moyle, Xukun Luo
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Publication number: 20210285719Abstract: A heat exchanger apparatus can be configured so that there is at least one “U” or “C” shape configured manifold in combination with at least one “Z” or “S” shape configured manifold for the heat exchanger apparatus for the input and output of fluid into and out of the heat exchangers of the heat exchanger apparatus. In some embodiments, downstream and/or upstream lines can be connected to the manifolds at a center or off-center point for conveying inlet fluid and outlet fluid. A method of retrofitting a pre-existing plant, building a new plant, or designing a new plant that utilizes an embodiment of the heat exchanger apparatus can help provide an improved heat exchanger arrangement without significantly increasing the footprint needed for the arrangement so that a plant can be improved with an embodiment of the apparatus without requiring an enlarged footprint for the plant.Type: ApplicationFiled: March 13, 2020Publication date: September 16, 2021Applicant: Air Products and Chemicals, Inc.Inventors: Fang Xu, Xukun Luo, Douglas Paul Dee, Donn Michael Herron, William T. Kleinberg
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Publication number: 20210190422Abstract: Xenon and/or krypton is separated from a liquid oxygen stream comprising oxygen and xenon and/or krypton in a process comprising providing at least a portion of the liquid oxygen stream as a reflux liquid to the top of a rare gas recovery column operated at a pressure of between 5 to 25 bara, vaporizing a reboiler liquid in the reboiling zone in the bottom of the rare gas recovery column to produce a mixture of a rising vapor and a xenon and/or krypton-enriched liquid stream; and contacting the rising vapor with the reflux liquid in at least one distillation zone of the column to effect stripping xenon and/or krypton from the rising vapor to the reflux liquid. The process provides a recovery of xenon of greater than 90% and a krypton recovery of 15% to 90%.Type: ApplicationFiled: December 18, 2019Publication date: June 24, 2021Applicant: Air Products and Chemicals, Inc.Inventors: Xukun Luo, Alan D. Berger, Donn Michael Herron
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Patent number: 9631864Abstract: A method and apparatus of removing heavy hydrocarbons from a natural gas feed stream, the method comprising using first and second hydrocarbon removal systems in series such that the first system processes the natural gas feed stream to produce a heavy hydrocarbon depleted natural gas stream and the second system processes at least a portion of the heavy hydrocarbon depleted natural gas stream from the first system to produce a natural gas stream lean in heavy hydrocarbons, wherein one of said systems is a adsorption system that comprises one or more beds of adsorbent for adsorbing and thereby removing heavy hydrocarbons from a heavy hydrocarbon containing natural gas, and the other of said systems is a gas-liquid separation system for separating a heavy hydrocarbon containing natural gas into a heavy hydrocarbon depleted natural gas vapor and a heavy hydrocarbon enriched liquid.Type: GrantFiled: September 12, 2012Date of Patent: April 25, 2017Assignee: Air Products and Chemicals, Inc.Inventors: Fei Chen, Xukun Luo, Christopher Michael Ott, Mark Julian Roberts, Gowri Krishnamurthy
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Publication number: 20140033763Abstract: A method and apparatus of removing heavy hydrocarbons from a natural gas feed stream, the method comprising using first and second hydrocarbon removal systems in series such that the first system processes the natural gas feed stream to produce a heavy hydrocarbon depleted natural gas stream and the second system processes at least a portion of the heavy hydrocarbon depleted natural gas stream from the first system to produce a natural gas stream lean in heavy hydrocarbons, wherein one of said systems is a adsorption system that comprises one or more beds of adsorbent for adsorbing and thereby removing heavy hydrocarbons from a heavy hydrocarbon containing natural gas, and the other of said systems is a gas-liquid separation system for separating a heavy hydrocarbon containing natural gas into a heavy hydrocarbon depleted natural gas vapor and a heavy hydrocarbon enriched liquid.Type: ApplicationFiled: September 12, 2012Publication date: February 6, 2014Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Fei Chen, Xukun Luo, Christopher Michael Ott, Mark Julian Roberts, Gowri Krishnamurthy
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Publication number: 20140033762Abstract: A method and apparatus of removing heavy hydrocarbons from a natural gas feed stream, the method comprising using first and second hydrocarbon removal systems in series such that the first system processes the natural gas feed stream to produce a heavy hydrocarbon depleted natural gas stream and the second system processes at least a portion of the heavy hydrocarbon depleted natural gas stream from the first system to produce a natural gas stream lean in heavy hydrocarbons, wherein one of said systems is a adsorption system that comprises one or more beds of adsorbent for adsorbing and thereby removing heavy hydrocarbons from a heavy hydrocarbon containing natural gas, and the other of said systems is a gas-liquid separation system for separating a heavy hydrocarbon containing natural gas into a heavy hydrocarbon depleted natural gas vapor and a heavy hydrocarbon enriched liquid.Type: ApplicationFiled: August 3, 2012Publication date: February 6, 2014Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Fei Chen, Xukun Luo, Christopher Michael Ott, Mark Julian Roberts, Gowri Krishnamurthy
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Publication number: 20080279746Abstract: A process for fluorination of borohydride salts including providing a reaction medium comprising HF and a superacid. A borohydride salt compound is added to the reaction medium. The borohydride salt is reacted with the with the reaction medium under conditions to form a fluorinated borohydride salt. In addition, reactor vessels may be provided for reacting the HF, superacid additive and borohydride that are fabricated from materials resistant to superacid compositions.Type: ApplicationFiled: July 9, 2008Publication date: November 13, 2008Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Wade H. Bailey, III, William Jack Casteel, JR., Sergei Vladimirovich Ivanov, Xukun Luo
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Patent number: 7429671Abstract: A process for fluorination of borohydride salts including providing a reaction medium comprising HF and a superacid. A borohydride salt compound is added to the reaction medium. The borohydride salt is reacted with the reaction medium under conditions to form a fluorinated borohydride salt. In addition, reactor vessels may be provided for reacting the HF, superacid additive and borohydride that are fabricated from materials resistant to superacid compositions.Type: GrantFiled: December 6, 2006Date of Patent: September 30, 2008Assignee: Air Products and Chemicals, Inc.Inventors: Wade H. Bailey, III, William Jack Casteel, Jr., Sergei Vladimirovich Ivanov, Xukun Luo
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Publication number: 20080138269Abstract: A process for fluorination of borohydride salts including providing a reaction medium comprising HF and a superacid. A borohydride salt compound is added to the reaction medium. The borohydride salt is reacted with the with the reaction medium under conditions to form a fluorinated borohydride salt. In addition, reactor vessels may be provided for reacting the HF, superacid additive and borohydride that are fabricated from materials resistant to superacid compositions.Type: ApplicationFiled: December 6, 2006Publication date: June 12, 2008Inventors: Wade H. Bailey, William Jack Casteel, Sergei Vladimirovich Ivanov, Xukun Luo