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公开(公告)号:US10247471B2
公开(公告)日:2019-04-02
申请号:US16032204
申请日:2018-07-11
申请人: James R. Handley , Brian S. Powell , Henry E. Howard , Vijayaraghavan S. Chakravarthy , Maulik R. Shelat , Steven R. Falta
发明人: James R. Handley , Brian S. Powell , Henry E. Howard , Vijayaraghavan S. Chakravarthy , Maulik R. Shelat , Steven R. Falta
摘要: An argon reflux condensation system and method in which a plurality of once-through condensers are connected to an argon column of an air separation plant to condense argon-rich vapor streams for production of reflux to the argon column. Condensation of the argon-rich vapor streams is brought about through indirect heat exchange with crude liquid oxygen streams that partially vaporize and are introduced into a lower pressure column of the plant for further refinement. The flow rate of the crude liquid oxygen streams are sensed and controlled at locations in the air separation plant where the crude liquid oxygen is in a liquid state and in proportion to the size of the once-through heat exchangers. Prior to flowing into the once-through condensers, the partially vaporized crude oxygen stream enters a phase separator which separates the crude oxygen vapor from the crude liquid oxygen. The separated crude oxygen vapor bypasses the once-through condensers and is mixed with the vaporized oxygen stream that exits the one-through condensers. Feed stream flow rate to the argon column is controlled in response to air flow rate to the plant and product flow rate is controlled in response to the feed stream flow rate to the argon column.
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公开(公告)号:US20190003766A1
公开(公告)日:2019-01-03
申请号:US16063467
申请日:2017-01-04
申请人: Henry E. Howard
发明人: Henry E. Howard
摘要: A system and method for argon and nitrogen extraction and liquefaction from a low-pressure tail gas of an ammonia production plant is provided. The preferred tail gas of the ammonia production plant comprises methane, nitrogen, argon, and hydrogen. The disclosed system and method provides for the methane rejection via rectification and hydrogen rejection by way of a side stripper column or phase separator. The resulting nitrogen and argon containing stream is separated and liquefied in a double column distillation system.
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公开(公告)号:US20180328655A1
公开(公告)日:2018-11-15
申请号:US16032204
申请日:2018-07-11
申请人: James R. Handley , Brian S. Powell , Henry E. Howard , Vijayaraghavan S. Chakravarthy , Maulik R. Shelat , Steven R. Falta
发明人: James R. Handley , Brian S. Powell , Henry E. Howard , Vijayaraghavan S. Chakravarthy , Maulik R. Shelat , Steven R. Falta
CPC分类号: F25J3/04672 , F25J3/0285 , F25J3/04412 , F25J3/04678 , F25J3/04715 , F25J3/048 , F25J3/04848 , F25J2250/02 , F25J2250/20
摘要: An argon reflux condensation system and method in which a plurality of once-through condensers are connected to an argon column of an air separation plant to condense argon-rich vapor streams for production of reflux to the argon column. Condensation of the argon-rich vapor streams is brought about through indirect heat exchange with crude liquid oxygen streams that partially vaporize and are introduced into a lower pressure column of the plant for further refinement. The flow rate of the crude liquid oxygen streams are sensed and controlled at locations in the air separation plant where the crude liquid oxygen is in a liquid state and in proportion to the size of the once-through heat exchangers. Prior to flowing into the once-through condensers, the partially vaporized crude oxygen stream enters a phase separator which separates the crude oxygen vapor from the crude liquid oxygen. The separated crude oxygen vapor bypasses the once-through condensers and is mixed with the vaporized oxygen stream that exits the one-through condensers. Feed stream flow rate to the argon column is controlled in response to air flow rate to the plant and product flow rate is controlled in response to the feed stream flow rate to the argon column.
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公开(公告)号:US10088229B2
公开(公告)日:2018-10-02
申请号:US15271594
申请日:2016-09-21
申请人: Henry E. Howard
发明人: Henry E. Howard
摘要: A system and method for cryogenic purification of a hydrogen, nitrogen, methane and argon containing feed stream to produce a methane free, hydrogen and nitrogen containing synthesis gas and a methane rich fuel gas, as well as to recover an argon product stream, excess hydrogen, and excess nitrogen is provided. The disclosed system and method are particularly useful as an integrated cryogenic purifier in an ammonia synthesis process in an ammonia plant. The excess nitrogen is a nitrogen stream substantially free of methane and hydrogen that can be used in other parts of the plant, recovered as a gaseous nitrogen product and/or liquefied to produce a liquid nitrogen product.
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公开(公告)号:US10082333B2
公开(公告)日:2018-09-25
申请号:US14754801
申请日:2015-06-30
申请人: James R. Handley , Brian S. Powell , Henry E. Howard , Vijayaraghavan S. Chakravarthy , Maulik R. Shelat , Steven R. Falta
发明人: James R. Handley , Brian S. Powell , Henry E. Howard , Vijayaraghavan S. Chakravarthy , Maulik R. Shelat , Steven R. Falta
CPC分类号: F25J3/04672 , F25J3/0285 , F25J3/04412 , F25J3/04678 , F25J3/04715 , F25J3/048 , F25J3/04848 , F25J2250/02 , F25J2250/20
摘要: An argon reflux condensation system and method in which a plurality of once-through condensers are connected to an argon column of an air separation plant to condense argon-rich vapor streams for production of reflux to the argon column. Condensation of the argon-rich vapor streams is brought about through indirect heat exchange with crude liquid oxygen streams that partially vaporize and are introduced into a lower pressure column of the plant for further refinement. The flow rate of the crude liquid oxygen streams are sensed and controlled at locations in the air separation plant where the crude liquid oxygen is in a liquid state and in proportion to the size of the once-through heat exchangers. Prior to flowing into the once-through condensers, the partially vaporized crude oxygen stream enters a phase separator which separates the crude oxygen vapor from the crude liquid oxygen. The separated crude oxygen vapor bypasses the once-through condensers and is mixed with the vaporized oxygen stream that exits the one-through condensers. Feed stream flow rate to the argon column is controlled in response to air flow rate to the plant and product flow rate is controlled in response to the feed stream flow rate to the argon column.
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16.
公开(公告)号:US20170268820A1
公开(公告)日:2017-09-21
申请号:US15453951
申请日:2017-03-09
申请人: Henry E. Howard
发明人: Henry E. Howard
IPC分类号: F25J3/02
CPC分类号: F25J3/0276 , F25J3/0219 , F25J3/0233 , F25J3/0257 , F25J3/0285 , F25J2200/06 , F25J2200/30 , F25J2200/38 , F25J2200/72 , F25J2200/74 , F25J2200/76 , F25J2200/78 , F25J2210/04 , F25J2210/20 , F25J2215/04 , F25J2230/30 , F25J2235/58 , F25J2235/60 , F25J2240/02 , F25J2245/02 , F25J2270/02 , F25J2270/04 , F25J2270/42 , F25J2290/34
摘要: A system and method for argon and nitrogen extraction from a feed stream comprising hydrogen, methane, nitrogen and argon, such as a low-pressure tail gas of an ammonia production plant is provided. The disclosed system and method provides for a rectification system wherein an argon depleted gaseous stream and a methane rich liquid stream are produced and subsequently combined in whole or in part prior to vaporization. Nitrogen and argon containing streams may also be produced from the rectification system. An argon stripping column arrangement is also disclosed where residual argon is removed from the methane-rich fuel gas and recycled back to the feed stream.
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17.
公开(公告)号:US20160245585A1
公开(公告)日:2016-08-25
申请号:US14629842
申请日:2015-02-24
申请人: Henry E. Howard
发明人: Henry E. Howard
IPC分类号: F25J3/04
CPC分类号: F25J3/04412 , F25J3/0409 , F25J3/04175 , F25J3/04278 , F25J3/04296 , F25J3/04345 , F25J3/04381 , F25J3/04393 , F25J2245/40 , F25J2245/42 , F25J2270/14 , F25J2270/40 , F25J2270/42 , F25J2270/80 , F25J2270/90 , F25J2270/902
摘要: A high efficiency and high volume air liquefaction system and method is disclosed wherein the cryogenic air separation plant includes a warm gas turbo-expansion cycle to supply the supplemental refrigeration required to produce liquid products in excess of about 15% of the incoming feed air.
摘要翻译: 公开了一种高效率和高体积的空气液化系统和方法,其中低温空气分离设备包括温暖的气体涡轮膨胀循环,以提供产生超过进料进料空气的约15%的液体产物所需的补充制冷。
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公开(公告)号:US5233838A
公开(公告)日:1993-08-10
申请号:US890838
申请日:1992-06-01
申请人: Henry E. Howard
发明人: Henry E. Howard
IPC分类号: F25J3/04
CPC分类号: F25J3/04212 , F25J3/042 , F25J3/0429 , F25J3/04303 , F25J3/04448 , F25J2200/20 , F25J2250/50 , Y10S62/939
摘要: A cryogenic rectification system having an auxiliary column and a double column plant wherein liquid oxygen from the double column plant is vaporized prior to recovery against auxiliary column top vapor producing additional reflux for the double column plant thereby sustaining oxygen recovery under elevated pressure conditions.
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19.
公开(公告)号:US20210356205A1
公开(公告)日:2021-11-18
申请号:US17229923
申请日:2021-04-14
摘要: Enhancements to the distillation column system and cycles for an argon and nitrogen producing cryogenic air separation unit are provided. The enhancements include systems and methods for: (i) recovery of xenon and krypton; (ii) production of oxygen product substantially free of hydrocarbons; and (iii) improvement in the design and performance of the super-stage argon column. The present systems and methods are further characterized in an oxygen enriched stream from the lower pressure column of the air separation unit is an oxygen enriched condensing medium used in the argon condenser.
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公开(公告)号:US10533565B2
公开(公告)日:2020-01-14
申请号:US16381063
申请日:2019-04-11
申请人: Henry E. Howard , Carl L. Schwarz , Ahmed F. Abdelwahab , Lee J. Rosen , Nick J. Degenstein , Reh-Lin Chen
发明人: Henry E. Howard , Carl L. Schwarz , Ahmed F. Abdelwahab , Lee J. Rosen , Nick J. Degenstein , Reh-Lin Chen
摘要: A method for compression of an incoming feed air stream using at least two variable speed compressor drive assemblies controlled in tandem is provided. The first variable speed drive assembly drives at least one compression stage in the lower pressure compressor unit driven while the second variable speed drive assembly drives higher pressure compression stage disposed either in the common air compression train or the split functional compression train of the air separation plant. The first and second variable speed drive assemblies are preferably high speed, variable speed electric motor assemblies each having a motor body, a motor housing, and a motor shaft with one or more impellers directly and rigidly coupled to the motor shaft via a sacrificial rigid shaft coupling.
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