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公开(公告)号：US10663223B2
公开(公告)日：2020-05-26
申请号：US15962297
申请日：2018-04-25
IPC分类号： F25J3/04
摘要： 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：US10663222B2
公开(公告)日：2020-05-26
申请号：US15962245
申请日：2018-04-25
IPC分类号： F25J3/04
摘要： 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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33.发明申请公开(公告)号：US20200149807A1
公开(公告)日：2020-05-14
申请号：US16742965
申请日：2020-01-15
IPC分类号： F25J3/04
摘要： 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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34.发明申请公开(公告)号：US20190331418A1
公开(公告)日：2019-10-31
申请号：US15962358
申请日：2018-04-25
IPC分类号： F25J3/04
摘要： 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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35.发明申请METHOD AND APPARATUS FOR ARGON RECOVERY IN A CRYOGENIC AIR SEPARATION UNIT INTEGRATED WITH A PRESSURE SWING ADSORPTION SYSTEM 有权用压力旋转吸附系统集成的低温空气分离单元中ARGON回收的方法和装置公开(公告)号：US20170030641A1
公开(公告)日：2017-02-02
申请号：US15057160
申请日：2016-03-01
申请人： Neil M. Prosser , Yang Luo
发明人： Neil M. Prosser , Yang Luo
IPC分类号： F25J3/04 , F25J3/02 , B01D53/047
CPC分类号： F25J3/04412 , B01D53/047 , B01D2256/18 , B01D2257/102 , B01D2257/104 , F25J3/0409 , F25J3/04096 , F25J3/04103 , F25J3/04296 , F25J3/04303 , F25J3/04678 , F25J3/04733 , F25J3/04739 , F25J3/04884 , F25J3/04939 , F25J2200/80 , F25J2205/02 , F25J2205/60 , F25J2245/58 , F25J2250/02 , F25J2270/02 , F25J2290/34
摘要： A method and apparatus for argon recovery in which an impure argon stream is separated from air within a cryogenic air separation unit having an argon rejection column and a reflux type argon condenser disposed internally within the lower pressure column. An impure argon stream is subsequently recovered from the argon rejection column and purified within an integrated adsorbent based argon refining and purification subsystem to produce product grade argon. The waste stream from the adsorbent based argon refining and purification subsystem is recycled back to the argon rejection column so as to improve the argon recovery.
摘要翻译： 一种用于氩气回收的方法和装置，其中将不纯的氩气流与空气中的空气分离，所述低温空气分离单元具有设置在低压塔内的排氩塔和回流型氩冷凝器。 随后从氩排出塔回收不纯的氩气流，并在集成的基于吸附剂的氩气精炼和净化子系统中纯化以产生产品级氩气。 来自吸附剂的氩精炼和净化子系统的废物流被再循环回氩排出塔，以改善氩的回收率。
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公开(公告)号：US5582036A
公开(公告)日：1996-12-10
申请号：US521497
申请日：1995-08-30
CPC分类号： F25J3/04418 , F25J3/0409 , F25J3/04303 , F25J3/04557 , F25J3/046 , F25J2200/34 , F25J2200/54 , F25J2215/02 , F25J2215/52 , F25J2245/50 , Y10S62/915
摘要： A system which integrates a cryogenic air separation plant with a blast furnace system enabling efficient oxygen enrichment of the blast air, and, if desired, production of additional higher purity oxygen.
摘要翻译： 将低温空气分离装置与高炉系统相集成的系统，其能够高效地富集鼓风空气，并且如果需要，可生产额外的较高纯度的氧气。
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公开(公告)号：US5197296A
公开(公告)日：1993-03-30
申请号：US823685
申请日：1992-01-21
申请人： Neil M. Prosser , Mark J. Roberts
发明人： Neil M. Prosser , Mark J. Roberts
IPC分类号： F25J3/04
CPC分类号： F25J3/04181 , F25J3/04315 , F25J3/04412 , F25J3/04678 , F25J3/04915 , F25J2200/20 , F25J2205/02 , F25J2290/10 , Y10S62/924
摘要： A cryogenic rectification system for producing elevated pressure product wherein the lower pressure column of a two column system is operated at elevated pressure and nitrogen-containing fluid taken from the upper portion of the lower pressure column is used to generate plant refrigeration and to regenerate feed purifier adsorbent beds thus avoiding the need for any feed expansion.
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公开(公告)号：US20230052938A1
公开(公告)日：2023-02-16
申请号：US17399742
申请日：2021-08-11
申请人： Zhengrong Xu , Neil M. Prosser
发明人： Zhengrong Xu , Neil M. Prosser
摘要： A system and method for improving the performance of an oxygen, nitrogen, and argon producing air separation unit configured to produce a gaseous nitrogen product stream is provided. By recycling the argon condenser boil-off vapor stream to the main air compression train, the argon recovery and oxygen recovery while maintaining the production level of a medium or high pressure gaseous nitrogen product stream. In addition, some operational cost savings in terms of lower power costs can also be realized compared to some prior art oxygen, nitrogen, and argon producing air separation units.
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公开(公告)号：US20220146196A1
公开(公告)日：2022-05-12
申请号：US17580860
申请日：2022-01-21
申请人： Neil M. Prosser , Yang Luo , Richard D. Lenz , Kevin J. Saboda
发明人： Neil M. Prosser , Yang Luo , Richard D. Lenz , Kevin J. Saboda
IPC分类号： F25J3/04
摘要： A system and method for flexible production of argon from a cryogenic air separation unit is provided. The cryogenic air separation unit is capable of operating in a ‘no-argon’ or ‘low-argon’ mode when argon demand is low or non-existent and then switching to operating in a ‘high-argon’ mode when argon is needed. The recovery of the argon products from the air separation unit is adjusted by varying the percentages of dirty shelf nitrogen and clean shelf nitrogen in the reflux stream directed to the lower pressure column. The cryogenic air separation unit and associated method also provides an efficient argon production/rejection process that minimizes the power consumption when the cryogenic air separation unit is operating in a ‘no-argon’ or ‘low-argon’ mode yet maintains the capability to produce higher volumes of argon products at full design capacity to meet argon product demands.
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公开(公告)号：US11293671B2
公开(公告)日：2022-04-05
申请号：US16922067
申请日：2020-07-07
摘要： Closed-loop refrigeration cycles for liquid oxygen densification are disclosed. The disclosed refrigeration cycles may be turbine-based refrigeration cycles or a Joule-Thompson (JT) expansion valve based refrigeration cycles and include a refrigerant or working fluid comprising a mixture of neon or helium together with nitrogen and/or oxygen.
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