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公开(公告)号：US09669349B1
公开(公告)日：2017-06-06
申请号：US15049634
申请日：2016-02-22
发明人： Garret Chi-Ho Lau , Qiao Zhao , Roger Dean Whitley , Erin Marie Sorensen , Charles Gardner Coe , William Jack Casteel, Jr. , Geoffrey John Ochs , Christopher Robert Bongo , Marissa Ann Bonanno
IPC分类号： B01D53/047 , B01J20/18
CPC分类号： B01D53/047 , B01D53/0473 , B01D2253/1085 , B01D2256/12 , B01D2256/18 , B01D2257/102 , B01D2257/104 , B01D2257/11 , B01J20/18
摘要： A method of separating oxygen from an oxygen-containing fluid stream is disclosed, the method including the step of contacting the oxygen-containing fluid stream with an oxygen-selective zeolite adsorbent comprising at least 90% chabazite, wherein the chabazite is a single phase chabazite having an Si/Al ratio of 1.2 to 1.8. The single phase chabazite may comprise a mixture of at least two types of cations.
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公开(公告)号：US09925514B2
公开(公告)日：2018-03-27
申请号：US15049610
申请日：2016-02-22
发明人： Charles Gardner Coe , Christopher Robert Bongo , Geoffrey John Ochs , Marissa Ann Bonanno , Garret Chi-Ho Lau , William Jack Casteel, Jr. , Qiao Zhao , Roger Dean Whitley , Erin Marie Sorensen
CPC分类号： B01J20/18 , B01D53/02 , B01D53/04 , B01D2253/1085 , B01D2256/10 , B01D2256/18 , B01D2257/104 , B01J20/186 , C01B39/46
摘要： An adsorbent having a composition comprising at least 90% chabazite where the chabazite is a single phase chabazite having an Si/Al ratio of 1.2 to 1.8, the chabazite includes a mixture of at least two types of cations, and each of the at least two types of cations are in a molar ratio relative to Al of at least 0.05.
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公开(公告)号：US20220099367A1
公开(公告)日：2022-03-31
申请号：US17036439
申请日：2020-09-29
IPC分类号： F25J3/04
摘要： A chiller can be configured as a chiller for a gasification system or other type of system or plant. In some embodiments, the chiller can be configured to utilize a single heat source, such as low grade waste heat in the form of hot water, and/or low pressure steam to drive one or more absorption-based chillers to cool inlet air to one or more adsorbers of a pre-purification unit (PPU). In the event of the detection of an undesired impurity spike (e.g. carbon dioxide spike, etc.) an additional amount of heat source can be withdrawn from the gasification system to increase the level of cooling the absorption chiller can provide to improve the removal of impurities. An automated control loop can be utilized in some embodiments. The control loop can be configured to check for an impurity concentration and adjust operations accordingly.
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公开(公告)号：US20170239641A1
公开(公告)日：2017-08-24
申请号：US15049659
申请日：2016-02-22
发明人： Charles Gardner Coe , Geoffrey John Ochs , Marissa Ann Bonanno , Christopher Robert Bongo , William Jack Casteel, JR. , Garret Chi-Ho Lau , Qiao Zhao , Roger Dean Whitley , Erin Marie Sorensen
CPC分类号： B01J20/18 , B01D53/02 , B01D53/047 , B01D2253/108 , B01D2256/12 , B01D2256/18 , B01D2257/102 , B01J20/186 , B01J20/3078 , B01J20/3085 , C01B23/0068 , C01B39/02 , C01B39/46
摘要： A method for preparing an adsorbent is disclosed that includes mixing an NaY zeolite, aqueous Al(OH)3, and aqueous KOH, and then heating the resultant mixture for an allotted amount of time to achieve a composition comprising at least 90% single phase chabazite having an Si/Al ratio of 1.0 to 2.2.
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公开(公告)号：US11054182B2
公开(公告)日：2021-07-06
申请号：US15993993
申请日：2018-05-31
发明人： Qiao Zhao , Donn Michael Herron
IPC分类号： F25J3/04
摘要： Process and apparatus for the separation of a compressed feed air stream to produce an oxygen product using a distillation column having a lower-pressure column and a higher-pressure column, a higher-pressure heat exchanger and a lower-pressure heat exchanger where the gaseous nitrogen expander receives a nitrogen-enriched fraction from a position intermediate the warmer end and the colder end of the higher-pressure heat exchanger.
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公开(公告)号：US20170239640A1
公开(公告)日：2017-08-24
申请号：US15049610
申请日：2016-02-22
发明人： Charles Gardner Coe , Christopher Robert Bongo , Geoffrey John Ochs , Marissa Ann Bonanno , Garret Chi-Ho Lau , William Jack Casteel, JR. , Qiao Zhao , Roger Dean Whitley , Erin Marie Sorensen
CPC分类号： B01J20/18 , B01D53/02 , B01D53/04 , B01D2253/1085 , B01D2256/10 , B01D2256/18 , B01D2257/104 , B01J20/186 , C01B39/46
摘要： An adsorbent having a composition comprising at least 90% chabazite where the chabazite is a single phase chabazite having an Si/Al ratio of 1.2 to 1.8, the chabazite includes a mixture of at least two types of cations, and each of the at least two types of cations are in a molar ratio relative to Al of at least 0.05.
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公开(公告)号：US09708188B1
公开(公告)日：2017-07-18
申请号：US15049704
申请日：2016-02-22
发明人： Shubhra Jyoti Bhadra , Roger Dean Whitley , Garret Chi-Ho Lau , David Ross Graham , Donn Michael Herron , Qiao Zhao , Erin Marie Sorensen
IPC分类号： B01D53/047 , C01B23/00
CPC分类号： C01B23/0068 , B01D53/047 , B01D2253/108 , B01D2253/1085 , B01D2256/00 , B01D2256/18 , B01D2257/102 , B01D2257/104 , B01D2259/40016 , B01D2259/40037 , B01D2259/40052 , B01D2259/40069 , B01D2259/40081 , B01D2259/40086 , B01D2259/401 , B01D2259/402 , B01D2259/416 , F25J3/04733 , F25J3/04739 , F25J3/04806 , F25J2205/60 , F25J2205/72 , F25J2230/08 , F25J2230/30 , F25J2230/58 , F25J2235/02 , F25J2235/58 , F25J2245/50
摘要： Methods and systems for purifying argon from a crude argon stream are disclosed, employing pressure swing adsorption at cold temperatures from −186° C. to −20° C.; more preferably from −150° C. to −50° C.; and most preferably from −130° C. to −80° C. with oxygen-selective zeolite adsorbent. In some embodiments, the oxygen-selective zeolite adsorbent is a 4A zeolite, a chabazite, or a combination thereof.
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