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1.发明申请
公开(公告)号：WO2019209672A3
公开(公告)日：2019-10-31
申请号：PCT/US2019/028437
申请日：2019-04-22
Applicant: PRAXAIR TECHNOLOGY, INC.
Inventor： HANDLEY, James, R. , PROSSER, Neil, M. , KROMER, Brian, R.
IPC: F25J3/00
Abstract: A moderate pressure air separation unit and air separation cycle is disclosed that provides for up to about 96% recovery of argon, an overall nitrogen recovery of 98% or greater and limited gaseous oxygen production. The air separation is configured to produce a first high purity oxygen enriched stream and a second lower purity oxygen enriched stream from the lower pressure column, one of which is used as the refrigerant to condense the argon in the argon condenser, with the resulting vaporized oxygen stream used to regenerate the temperature swing adsorption pre-purifier unit. All or a portion of the first high purity oxygen enriched stream is vaporized in the main heat exchanger to produce the gaseous oxygen products.
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2.发明申请
公开(公告)号：WO2019209672A2
公开(公告)日：2019-10-31
申请号：PCT/US2019/028437
申请日：2019-04-22
Applicant: PRAXAIR TECHNOLOGY, INC.
Inventor： HANDLEY, James, R. , PROSSER, Neil, M. , KROMER, Brian, R.
IPC: F25J3/00
Abstract: A moderate pressure air separation unit and air separation cycle is disclosed that provides for up to about 96% recovery of argon, an overall nitrogen recovery of 98% or greater and limited gaseous oxygen production. The air separation is configured to produce a first high purity oxygen enriched stream and a second lower purity oxygen enriched stream from the lower pressure column, one of which is used as the refrigerant to condense the argon in the argon condenser, with the resulting vaporized oxygen stream used to regenerate the temperature swing adsorption pre-purifier unit. All or a portion of the first high purity oxygen enriched stream is vaporized in the main heat exchanger to produce the gaseous oxygen products.
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公开(公告)号：WO2014134383A1
公开(公告)日：2014-09-04
申请号：PCT/US2014/019225
申请日：2014-02-28
Applicant: PRAXAIR TECHNOLOGY, INC.
CPC classification number: F25J3/04733 , B01D53/04 , B01D2253/108 , B01D2256/18 , B01D2257/104 , C01B23/0052 , C01B23/0057 , C01B2210/0014 , C01B2210/0034 , C01B2210/0045 , F25J3/0409 , F25J3/04303 , F25J3/04412 , F25J3/04678 , F25J2205/02 , F25J2205/60 , F25J2205/66 , F25J2215/58 , F25J2220/04 , F25J2245/42
Abstract: A method and apparatus for producing a purified liquid argon product in which liquid argon having oxygen impurities is produced in a cryogenic air separation plant by separating argon from oxygen within an argon column. An impure liquid argon stream, composed of part of the liquid argon, is purified in an adsorbent bed by adsorbing the oxygen impurities in an adsorbent to produce a purified liquid argon stream that constitutes the purified liquid argon product. During adsorption, the adsorbent bed is maintained at a reduced temperature with a coolant to prevent vaporization of the liquid argon. The bed is then regenerated by draining residual liquid argon from the adsorbent bed, introducing the residual liquid argon back into the air separation plant and then desorbing the oxygen impurities with a regeneration gas. After regeneration, the adsorbent bed is refilled with purified liquid argon prior to being brought back on-line.
Abstract translation: 一种用于生产纯化液态氩产物的方法和装置，其中在低温空气分离装置中通过从氩气塔内分离氩气而产生具有氧杂质的液态氩。 由一部分液态氩构成的不纯液态氩气流通过吸附吸附剂中的氧杂质而在吸附床中进行纯化，从而产生构成纯化液氩产品的纯化液氩流。 在吸附过程中，用冷却剂将吸附床保持在降低的温度，以防止液态氩的蒸发。 然后通过从吸附床排出残留的液态氩，将残余的液态氩引入空气分离装置，然后用再生气体解吸氧杂质，再生床。 在再生之后，吸附床在被还原回来之前用纯化的液态氩再填充。
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公开(公告)号：WO2021126513A1
公开(公告)日：2021-06-24
申请号：PCT/US2020/062665
申请日：2020-12-01
Applicant: PRAXAIR TECHNOLOGY, INC.
Inventor： PROSSER, Neil, M. , HANDLEY, James, R. , DE CASTRO COSTA, Ricardo, Dutra , BILLINGHAM, John, F. , PARSNICK, David, R.
IPC: F25B9/00 , F25B9/06 , F25J1/00 , F25B9/002 , F25B9/004 , F25J1/0012 , F25J1/0015 , F25J1/0037 , F25J1/004 , F25J1/0042 , F25J1/0045 , F25J1/005 , F25J1/0052 , F25J1/0057 , F25J1/007 , F25J1/0072 , F25J1/0202 , F25J1/0204 , F25J1/0236 , F25J1/0249 , F25J1/0265 , F25J1/0288 , F25J1/0292 , F25J1/0294 , F25J2220/02 , F25J2230/30 , F25J2270/06 , F25J2270/16
Abstract: Various systems and methods for suppling cryogenic refrigeration to supercomputing applications such as quantum computing operations are provided. The disclosed systems and methods are flexible, efficient and scaleable to meet the cryogenic refrigeration requirements of many supercomputing applications. The disclosed systems and methods include: (i) a liquid nitrogen based integrated refrigeration system that integrates a nitrogen refrigerator with a refrigeration load circuit; (ii) a closed loop liquid nitrogen based refrigerator that provides cooling to the refrigeration load circuit via indirect heat exchange between liquid nitrogen in a nitrogen refrigerator and a separate refrigerant in a closed-loop refrigeration load circuit; and (iii) a liquid air based integrated refrigeration system that integrates an air intake system with a refrigerator and a refrigeration load circuit.
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5.发明申请
公开(公告)号：WO2019209666A1
公开(公告)日：2019-10-31
申请号：PCT/US2019/028431
申请日：2019-04-22
Applicant: PRAXAIR TECHNOLOGY, INC.
Inventor： PROSSER, Neil, M. , KROMER, Brian, R. , HANDLEY, James, R.
IPC: F25J3/00
Abstract: A moderate pressure air separation unit and air separation cycle is disclosed that provides for up to about 96% recovery of argon, an overall nitrogen recovery of 98 percent or greater and limited gaseous oxygen production. The air separation is configured to produce a first high purity oxygen enriched stream and a second lower purity oxygen enriched stream from the lower pressure column, one of which is used as the refrigerant to condense the argon in the argon condenser, with the resulting vaporized oxygen stream used to regenerate the temperature swing adsorption pre-purifier unit. All or a portion of the first high purity oxygen enriched stream is vaporized in the main heat exchanger to produce the gaseous oxygen products.
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Patent Agency Ranking
公开(公告)号：WO2018157019A1
公开(公告)日：2018-08-30
申请号：PCT/US2018/019627
申请日：2018-02-26
Applicant: PRAXAIR TECHNOLOGY, INC.
Abstract: The present invention relates to a method and system for producing liquefied natural gas (LNG) from a stream of pressurized natural gas (1) which involves a combination of mechanical refrigeration produced by the reverse Brayton cycle (53,58) as well as refrigeration from evaporation of liquid nitrogen (31).
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公开(公告)号：WO2022225553A1
公开(公告)日：2022-10-27
申请号：PCT/US2021/054455
申请日：2021-10-12
Applicant: PRAXAIR TECHNOLOGY, INC.
Inventor： HANDLEY, James, R. , CYGANOVICH, Richard, C. , CELIK, Cem, E. , POWELL, Brian, S. , DASANI, Devang, Ashok
Abstract: A system and method of regenerating a pre-purification vessel is provided that is particularly suitable for pre-purification of a feed air stream in cryogenic air separation unit that uses an oxygen-enriched purge gas stream for regeneration of the pre- purification unit. The disclosed pre-purification systems and methods are configured to remove substantially all of the water, carbon dioxide and other impurities from a feed air stream, optionally including hydrogen and carbon monoxide impurities. The method of regenerating a pre-purification vessel preferably involves regenerating the pre- purification vessel with an oxygen-enriched purge gas after depressurization of the vessel and thereafter partially repressurizing the pre-purification vessel with an auxiliary purge gas thereby diluting the oxygen concentration of the gases contained in the pre- purification vessel and optionally depressurizing the partially repressurized vessel.
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公开(公告)号：WO2021242309A1
公开(公告)日：2021-12-02
申请号：PCT/US2020/064756
申请日：2020-12-14
Applicant: PRAXAIR TECHNOLOGY, INC.
Inventor： XU, Zhengrong , PROSSER, Neil, M. , HANDLEY, James, R. , BILLINGHAM, John, F.
IPC: F25J3/04
Abstract: Enhancements to a dual column, nitrogen producing cryogenic air separation unit with waste expansion are provided. Such enhancements include an improved air separation cycle that uses: (i) three condenser-reboilers; (ii) a reverse reflux stream from the condenser-reboiler associated with the lower pressure column to the higher pressure column; and (iii) a recycle stream of a portion of the vapor from one or more of the condenser-reboilers that is recycled back to the incoming feed stream and or the compressed purified air streams to yield improvements in the performance of such dual column, nitrogen producing cryogenic air separation units in terms of overall nitrogen recovery as well as power consumption compared to conventional dual column, nitrogen producing cryogenic air separation units employing waste expansion.
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9.发明申请
公开(公告)号：WO2019209673A1
公开(公告)日：2019-10-31
申请号：PCT/US2019/028438
申请日：2019-04-22
Applicant: PRAXAIR TECHNOLOGY, INC.
Inventor： PROSSER, Neil, M. , HANDLEY, James, R. , KROMER, Brian, R.
IPC: F25J3/00
Abstract: A moderate pressure air separation unit and air separation cycle is disclosed that provides for up to about 96% recovery of argon and an overall nitrogen recovery of 98% or greater. The air separation is configured to produce a high purity oxygen enriched stream which is used as the refrigerant to condense the argon in the argon condenser, with the resulting vaporized oxygen stream used to regenerate the temperature swing adsorption prepurifier unit. Argon recovery is facilitated with the use of an argon superstaged column.
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10.发明申请
公开(公告)号：WO2019209669A3
公开(公告)日：2019-10-31
申请号：PCT/US2019/028434
申请日：2019-04-22
Applicant: PRAXAIR TECHNOLOGY, INC.
Inventor： KROMER, Brian, R. , HANDLEY, James, R. , PROSSER, Neil, M.
IPC: F25J3/00
Abstract: A moderate pressure air separation unit and air separation cycle is disclosed that provides for up to about 96% recovery of argon, an overall nitrogen recovery of 98 percent or greater and limited gaseous oxygen production. The air separation is configured to produce a first high purity oxygen enriched stream and a second lower purity oxygen enriched stream from the lower pressure column, one of which is used as the refrigerant to condense the argon in the argon condenser, with the resulting vaporized oxygen stream used to regenerate the temperature swing adsorption pre-purifier unit. All or a portion of the first high purity oxygen enriched stream is vaporized in the main heat exchanger to produce the gaseous oxygen products.
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