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1. 发明授权

US4689062A Argon recovery from ammonia plant purge gas utilizing a combination of cryogenic and non-cryogenic separating means 失效
标题翻译：利用低温和非低温分离装置的组合，从氨厂清洗气体中回收氩气
公开(公告)号：US4689062A
公开(公告)日：1987-08-25
申请号：US832206
申请日：1986-02-24
申请人： Donald L. MacLean , Ramachandran Krishnamurthy , Steven L. Lerner
发明人： Donald L. MacLean , Ramachandran Krishnamurthy , Steven L. Lerner
IPC分类号： B01D53/04 , C01B23/00 , C01C1/04 , F25J3/02 , F25J3/00
CPC分类号： F25J3/0219 , B01D53/04 , C01B23/00 , C01C1/0476 , F25J3/0252 , F25J3/0285 , B01D2253/102 , B01D2253/108 , B01D2256/18 , B01D2257/102 , B01D2257/108 , B01D2257/406 , B01D2257/702 , B01D2259/402 , B01D2259/404 , F25J2205/40 , F25J2205/60 , F25J2205/80 , F25J2210/20 , Y02P20/132 , Y02P20/52 , Y10S62/908
摘要： An improved process is disclosed for argon recovery from an ammonia synthesis plant purge gas comprising hydrogen, nitrogen, argon, ammonia, and methane. In one embodiment of the present invention, this purge gas is subjected to the following steps:(i) Separation of ammonia at high pressure by adsorption using zeolite molecular sieve material, which is subsequently regenerated by hot purge combined with pressure reduction;(ii) Separation of methane and most of the nitrogen by pressure swing adsorption using a molecular sieve or an activated carbon material having greater selectivity for methane than argon;(iii) Separation of hydrogen for recycle to the ammonia synthesis plant using a high pressure cryogenic distillation column of a membrane separator; and(iv) Separation of the nitrogen by cryogenic distillation means to obtain essentially pure liquid argon product.
摘要翻译：公开了一种用于从包括氢，氮，氩，氨和甲烷的氨合成设备吹洗气体回收氩气的改进方法。在本发明的一个实施方案中，该吹扫气体经受以下步骤：（i）通过使用沸石分子筛材料的吸附在高压下分离氨，其随后通过热吹扫结合减压再生; （ii）使用具有比氩气更高的甲烷选择性的分子筛或活性炭材料通过变压吸附分离甲烷和大部分氮气; （iii）使用膜分离器的高压低温蒸馏塔将氢气再循环至氨合成装置; 和（iv）通过低温蒸馏装置分离氮气以获得基本上纯的液体氩产物。

2. 发明授权

US4752311A Argon recovery from ammonia plant purge gas utilizing a combination of cryogenic and non-cryogenic separating means 失效
标题翻译：利用低温和非低温分离装置的组合，从氨厂清洗气体中回收氩气
公开(公告)号：US4752311A
公开(公告)日：1988-06-21
申请号：US45347
申请日：1987-05-04
申请人： Donald L. MacLean , Ramachandran Krishnamurthy , Steven L. Lerner
发明人： Donald L. MacLean , Ramachandran Krishnamurthy , Steven L. Lerner
IPC分类号： B01D53/04 , C01B23/00 , C01C1/04 , F25J3/02 , F25J3/00
CPC分类号： F25J3/0252 , B01D53/04 , C01B23/00 , C01C1/0476 , F25J3/0219 , F25J3/0285 , B01D2253/102 , B01D2253/108 , B01D2256/18 , B01D2257/102 , B01D2257/108 , B01D2257/406 , B01D2257/702 , B01D2259/402 , B01D2259/404 , B01D2259/416 , B01D53/047 , F25J2205/40 , F25J2205/60 , F25J2205/80 , F25J2210/20 , Y02P20/52 , Y10S62/908
摘要： An improved high yield process is disclosed for argon recovery from an ammonia synthesis plant purge gas comprising hydrogen, nitrogen, argon, ammonia, and methane. In one embodiment of the present invention, this purge gas is subjected to the following steps:(i) Separation of ammonia at high pressure by adsorption using zeolite molecular sieve material, which is subsequently regenerated by hot purge combined with pressure reduction;(ii) Separation of methane and most of the nitrogen by pressure swing adsorption using a molecular sieve or an activated carbon material having greater selectivity for methane than argon;(iii) Separation of hydrogen for recycle to the ammonia synthesis plant using a high pressure cryogenic distillation column or a membrane separator; and(iv) Separation of the nitrogen by cryogenic distillation means to obtain essentially pure liquid argon product.
摘要翻译：公开了一种改进的高产率方法，用于从包括氢，氮，氩，氨和甲烷的氨合成装置吹扫气体中回收氩气。在本发明的一个实施方案中，该吹扫气体经受以下步骤：（i）通过使用沸石分子筛材料的吸附在高压下分离氨，其随后通过热吹扫结合减压再生; （ii）使用具有比氩气更高的甲烷选择性的分子筛或活性炭材料通过变压吸附分离甲烷和大部分氮气; （iii）使用高压低温蒸馏塔或膜分离器将氢气再循环至氨合成装置; 和（iv）通过低温蒸馏装置分离氮气以获得基本上纯的液体氩产物。

3. 发明授权

US4750925A Argon recovery from hydrogen depleted ammonia plant purge gas utilizing a combination of cryogenic and non-cryogenic separating means 失效
标题翻译：利用低温和非低温分离装置的组合，从贫氢氨设备吹扫气体中回收氩气
公开(公告)号：US4750925A
公开(公告)日：1988-06-14
申请号：US45488
申请日：1987-05-04
申请人： Donald L. MacLean , Ramachandran Krishnamurthy , Steven L. Lerner
发明人： Donald L. MacLean , Ramachandran Krishnamurthy , Steven L. Lerner
IPC分类号： B01D53/047 , B01D53/22 , C01B23/00 , C01C1/04 , F25J3/02 , F25J3/00
CPC分类号： F25J3/0252 , B01D53/04 , B01D53/047 , B01D53/229 , C01B23/00 , C01C1/0476 , F25J3/0219 , F25J3/0285 , B01D2253/102 , B01D2253/108 , B01D2253/1126 , B01D2256/16 , B01D2257/102 , B01D2257/108 , B01D2257/406 , B01D2257/7025 , B01D2257/80 , B01D2259/40001 , B01D2259/40016 , B01D2259/4003 , B01D2259/40032 , B01D2259/40037 , B01D2259/40052 , B01D2259/40071 , B01D2259/402 , B01D2259/4143 , B01D2259/4146 , B01D2259/416 , B01D53/0476 , F25J2205/40 , F25J2205/60 , F25J2205/80 , F25J2210/20 , Y02C20/20 , Y02P20/129 , Y02P20/156 , Y02P20/52 , Y10S62/908
摘要： An improved process is provided for the recovery of argon from a gas mixture comprising hydrogen, nitrogen, methane and argon. An example of such a gas mixture is purge gas from an ammonia synthesis plant which has been subjected to the conventional steps of ammonia absorption and a membrane separation to obtain hydrogen for recycle to the ammonia plant. In a first embodiment, the gas mixture is treated in a pressure swing adsorption (PSA) system to remove the methane, residual moisture and most of the hydrogen, the resulting gas mixture is treated in a membrane separator to remove most of the hydrogen, which may be used as purge gas for the PSA system, and the resulting stream treat by cryogenic distillation to separate the nitrogen and residual hydrogen to obtain an essentially pure argon product. In a second embodient, the second treatment is eliminated and all of the hydrogen is removed by the cryogenic distillation. In a third embodiment, metal hydride adsorption is used in place of the membrane to separate the hydrogen. The process is enhanced by the recycle of vent gas from the PSA unit to the process itself or to the ammonia synthesis plant. Alternatively, a cocurrent depressurization product from the PSA plant can be recycled into the process.
摘要翻译：提供了一种改进的方法，用于从包含氢气，氮气，甲烷和氩气的气体混合物回收氩气。这种气体混合物的实例是来自氨合成设备的吹扫气体，其已经经过氨吸收和膜分离的常规步骤，以获得用于再循环到氨厂的氢气。在第一实施例中，气体混合物在变压吸附（PSA）系统中处理以除去甲烷，残余水分和大部分氢气，所得气体混合物在膜分离器中处理以除去大部分氢，其中可以用作PSA系统的净化气体，并且通过低温蒸馏处理所得的流以分离氮气和残余的氢气以获得基本上纯的氩气产物。在第二个实施方案中，第二处理被消除，并且通过低温蒸馏除去所有的氢。在第三实施例中，使用金属氢化物吸附来代替膜以分离氢。该方法通过从PSA单元再循环到工艺本身或氨合成装置来增强。或者，来自PSA装置的并流减压产物可以再循环到该方法中。

4. 发明授权

US5538706A Hydrogen and carbon monoxide production by partial oxidation of hydrocarbon feed 失效
标题翻译：通过烃进料的部分氧化产生氢气和一氧化碳
公开(公告)号：US5538706A
公开(公告)日：1996-07-23
申请号：US236282
申请日：1994-05-02
申请人： Akhilesh Kapoor , Ramachandran Krishnamurthy , Donald L. MacLean
发明人： Akhilesh Kapoor , Ramachandran Krishnamurthy , Donald L. MacLean
IPC分类号： C01B3/36 , C01B3/56 , C01B32/40 , C01B3/02 , C01B3/24 , C01B3/26
CPC分类号： F25J3/0271 , C01B3/36 , C01B3/56 , C01B31/18 , F25J3/0223 , F25J3/0233 , F25J3/0261 , C01B2203/043 , C01B2203/047 , C01B2203/0475 , C01B2203/048 , C01B2203/0495 , F25J2205/30 , F25J2245/02
摘要： Synthesis gas comprising hydrogen, water, carbon monoxide, carbon dioxide, and hydrocarbons is produced by contacting a gasified hydrocarbon feedstock and an oxidant in a partial oxidation reactor under at least 95% carbon monoxide selective, low hydrocarbon conversion conditions wherein the temperature, pressure, and flow rate conditions in the reactor yield synthesis gas having less than about 2% carbon dioxide. After being cooled, the synthesis gas is separated into high purity hydrogen, high purity carbon monoxide and a hydrogen-carbon monoxide gas mixture by pressure swing adsorption followed by cryogenic distillation or by two or more pressure swing adsorption steps.
摘要翻译：包括氢，水，一氧化碳，二氧化碳和烃的合成气体是通过在至少95％的一氧化碳选择性低碳氢化合物转化条件下使部分氧化反应器中的气化烃原料和氧化剂接触来制备的，其中温度，并且反应器中的流速条件产生具有小于约2％二氧化碳的合成气。冷却后，通过变压吸附，然后通过低温蒸馏或通过两个或更多个变压吸附步骤将合成气分离成高纯度氢气，高纯度一氧化碳和氢 - 一氧化碳气体混合物。

5. 发明授权

US5125934A Argon recovery from argon-oxygen-decarburization process waste gases 失效
标题翻译：氩气回收氩气脱碳工艺废气
公开(公告)号：US5125934A
公开(公告)日：1992-06-30
申请号：US590256
申请日：1990-09-28
申请人： Ramachandran Krishnamurthy , Donald L. MacLean
发明人： Ramachandran Krishnamurthy , Donald L. MacLean
IPC分类号： B01D53/04 , B01D53/047 , C01B23/00 , F25J3/02 , F25J3/08
CPC分类号： F25J3/08 , B01D53/0476 , F25J3/0285 , B01D2253/102 , B01D2253/108 , B01D2253/116 , B01D2253/25 , B01D2256/18 , B01D2257/102 , B01D2257/104 , B01D2257/106 , B01D2257/502 , B01D2257/504 , B01D2259/40001 , B01D2259/4003 , B01D2259/40037 , B01D2259/40066 , B01D2259/404 , B01D2259/416 , F25J2200/02 , F25J2205/40 , F25J2205/60 , F25J2205/82 , F25J2215/58 , F25J2270/12 , F25J2270/14 , F25J2270/42 , Y02C10/08
摘要： The present invention is directed to a method for recovering argon from a feed mixture comprising argon, carbon monoxide, carbon dioxide, nitrogen, and hydrogen which comprises the steps of (a) purifying the feed mixture to remove contaminants, (b) compressing the purified feed mixture to a separation pressure, and (c) passing the compressed purified feed mixture through a pressure swing adsorption system to separate carbon monoxide, carbon dioxide, and all or most of the nitrogen from the mixture as adsorbed products and to produce an argon-rich fraction as a non-adsorbed product. The argon-rich fraction from step (c) may be further purified by passing the fraction to a cryogenic fractional distillation system to separate hydrogen and any remaining nitrogen from the fraction as a distillate product and to produce a pure argon product. In a second and third embodiment, the invention is directed to a method for recovering argon from a feed mixture comprising argon, carbon monoxide, carbon dioxide, nitrogen, and oxygen, wherein oxygen is removed from the argon-rich fraction exiting the pressure swing adsorption system in step (c) by passing the fraction to a second pressure swing adsorption system before or after further purification of the fraction in a cryogenic fractional distillation system.
摘要翻译：本发明涉及从包含氩气，一氧化碳，二氧化碳，氮气和氢气的进料混合物中回收氩的方法，其包括以下步骤：（a）纯化进料混合物以除去污染物，（b）将纯化的进料混合物至分离压力，和（c）将经压缩的纯化进料混合物通过变压吸附系统，以将一氧化碳，二氧化碳和来自混合物的全部或大部分氮气作为吸附产物分离，并产生氩气 - 富集部分作为未吸附产物。通过将馏分通入低温分馏系统将馏分中的氢和任何剩余的氮分离成馏出物，并且产生纯氩产物，可以进一步纯化来自步骤（c）的富氩部分。在第二和第三实施方案中，本发明涉及从包含氩气，一氧化碳，二氧化碳，氮气和氧气的进料混合物中回收氩气的方法，其中从离开变压吸附塔的富氩馏分中除去氧气在步骤（c）中通过在低温分馏系统中进一步纯化馏分之前或之后将馏分通入第二变压吸附系统。

6. 发明授权

US5220797A Argon recovery from argon-oxygen-decarburization process waste gases 失效
标题翻译：氩气回收氩气脱碳工艺废气
公开(公告)号：US5220797A
公开(公告)日：1993-06-22
申请号：US837744
申请日：1992-02-19
申请人： Ramachandran Krishnamurthy , Donald L. MacLean
发明人： Ramachandran Krishnamurthy , Donald L. MacLean
IPC分类号： B01D53/047 , F25J3/02
CPC分类号： F25J3/08 , B01D53/0476 , F25J3/0285 , B01D2253/102 , B01D2253/106 , B01D2253/108 , B01D2253/116 , B01D2256/12 , B01D2256/18 , B01D2257/102 , B01D2257/104 , B01D2257/502 , B01D2257/504 , B01D2259/40001 , B01D2259/40015 , B01D2259/4003 , B01D2259/40066 , B01D2259/40069 , B01D2259/404 , B01D2259/416 , F25J2200/02 , F25J2205/40 , F25J2205/60 , F25J2205/82 , F25J2215/58 , F25J2270/12 , F25J2270/14 , F25J2270/42 , Y02C10/08 , Y10S62/924
摘要： The present invention is directed to a method for recovering argon from a feed mixture comprising argon, carbon monoxide, carbon dioxide, nitrogen, and hydrogen which comprises the steps of (a) purifying the feed mixture to remove contaminants, (b) compressing the purified feed mixture to a separation pressure, and (c) passing the compressed purified feed mixture through a pressure swing adsorption system to separate carbon monoxide, carbon dioxide, and all or most of the nitrogen from the mixture as adsorbed products and to produce an argon-rich fraction as a non-adsorbed product. The argon-rich fraction from step (c) may be further purified by passing the fraction to a cryogenic fractional distillation system to separate hydrogen and any remaining nitrogen from the fraction as a distillate product and to produce a pure argon product. In a second and third embodiment, the invention is directed to a method for recovering argon from a feed mixture comprising argon, carbon monoxide, carbon dioxide, nitrogen, and oxygen, wherein oxygen is removed from the argon-rich fraction exiting the pressure swing adsorption system in step (c) by passing the fraction to a second pressure swing adsorption system before or after further purification of the fraction in a cryogenic fractional distillation system.
摘要翻译：本发明涉及从包含氩气，一氧化碳，二氧化碳，氮气和氢气的进料混合物中回收氩的方法，其包括以下步骤：（a）纯化进料混合物以除去污染物，（b）将纯化的进料混合物至分离压力，和（c）将经压缩的纯化进料混合物通过变压吸附系统，以将一氧化碳，二氧化碳和来自混合物的全部或大部分氮气作为吸附产物分离，并产生氩气 - 富集部分作为未吸附产物。通过将馏分通入低温分馏系统将馏分中的氢和任何剩余的氮分离成馏出物，并且产生纯氩产物，可以进一步纯化来自步骤（c）的富氩部分。在第二和第三实施方案中，本发明涉及从包含氩气，一氧化碳，二氧化碳，氮气和氧气的进料混合物中回收氩的方法，其中从离开变压吸附的富氩馏分中除去氧气在步骤（c）中通过在低温分馏系统中进一步纯化馏分之前或之后将馏分通入第二变压吸附系统。

7. 发明授权

US4765804A PSA process and apparatus employing gaseous diffusion barriers 失效
标题翻译：使用气体扩散阻挡层的PSA方法和装置
公开(公告)号：US4765804A
公开(公告)日：1988-08-23
申请号：US97776
申请日：1987-09-17
申请人： Andrew Lloyd-Williams , Donald L. MacLean , Ravi Jain , Steven L. Lerner
发明人： Andrew Lloyd-Williams , Donald L. MacLean , Ravi Jain , Steven L. Lerner
IPC分类号： B01D53/047 , B01D53/22 , B01D53/04
CPC分类号： B01D53/229 , B01D53/047 , B01D2253/116 , B01D2253/25 , B01D2256/10 , B01D2257/104 , B01D2259/40001 , B01D2259/40015 , B01D2259/4003 , B01D2259/40032 , B01D2259/40037 , B01D2259/40052 , B01D2259/40056 , B01D2259/40066 , B01D2259/40067 , B01D2259/40071 , B01D2259/402 , B01D53/0473
摘要： There is disclosed an improved PSA process and apparatus for gas enrichment wherein the pressure levels of the vent gas stream and/or product stream are used to drive gaseous diffusion cells to produce a feed gas stream and/or a purge gas stream to be used in the pressure swing adsorption process to increase on-line production time and to utilize the waste pressure energy thereby decreasing energy requirements per unit of production.
摘要翻译：公开了一种用于气体富集的改进的PSA方法和装置，其中排气流和/或产物流的压力水平用于驱动气体扩散池以产生待使用的进料气流和/或吹扫气流变压吸附过程以增加在线生产时间并利用废压力能量，从而降低每单位生产的能量需求。

8. 发明授权

US4732580A Argon and nitrogen coproduction process 失效
标题翻译：氩和氮共同生产过程
公开(公告)号：US4732580A
公开(公告)日：1988-03-22
申请号：US914096
申请日：1986-10-01
申请人： Ravi Jain , Steven L. Lerner , Robert A. Mostello , Donald L. MacLean
发明人： Ravi Jain , Steven L. Lerner , Robert A. Mostello , Donald L. MacLean
IPC分类号： B01D53/04 , B01D53/047 , C01B23/00 , F25J3/04 , F25J3/08
CPC分类号： F25J3/044 , B01D53/0476 , C01B23/00 , F25J3/04278 , F25J3/04636 , F25J3/04648 , B01D2253/116 , B01D2253/25 , B01D2256/10 , B01D2256/18 , B01D2257/104 , B01D2257/504 , B01D2257/80 , B01D2259/40001 , B01D2259/40033 , B01D2259/40041 , B01D2259/40075 , B01D2259/402 , B01D2259/403 , B01D2259/416 , B01D53/261 , F25J2200/72 , F25J2205/60 , F25J2215/42 , F25J2270/12 , F25J2270/14 , F25J2270/66 , Y02C10/08 , Y02P20/129 , Y02P20/152 , Y10S62/924
摘要： Argon and nitrogen are produced in a basic two step process. In a first step, oxygen is removed from a compressed air feed using low temperature PSA (pressure swing adsorption). In the second step, argon and nitrogen mixture is separated by cryogenic distillation. The process yields crude liquid argon and very high purity gaseous nitrogen.
摘要翻译：在基本的两步法中产生氩和氮。在第一步中，使用低温PSA（变压吸附）从压缩空气进料中除去氧气。在第二步中，通过低温蒸馏分离氩和氮的混合物。该方法产生粗液氩和非常高纯度的气态氮。

9. 发明授权

US5100447A Argon recovery from partial oxidation based ammonia plant purge gases 失效
标题翻译：从部分氧化为基础的氨装置吹扫气体回收氩气
公开(公告)号：US5100447A
公开(公告)日：1992-03-31
申请号：US575256
申请日：1990-08-30
申请人： Ramachandran Krishnamurthy , Mark J. Andrecovich , Donald L. MacLean , Karen J. Wright
发明人： Ramachandran Krishnamurthy , Mark J. Andrecovich , Donald L. MacLean , Karen J. Wright
IPC分类号： B01D53/04 , C01B23/00 , F25J3/02 , F25J3/04
CPC分类号： F25J3/0219 , C01C1/0476 , F25J3/0223 , F25J3/0233 , F25J3/0257 , F25J3/0276 , F25J3/0285 , F25J3/08 , F25J2200/02 , F25J2200/04 , F25J2205/40 , F25J2205/60 , F25J2205/82 , F25J2210/20 , F25J2215/04 , F25J2270/12 , F25J2270/14 , F25J2270/42 , Y02P20/129 , Y02P20/52 , Y10S62/924
摘要： The present invention is directed to a method for recovering argon from a feed mixture comprising argon, carbon monoxide, methane, hydrogen, and nitrogen which comprises the steps of (a) passing the feed mixture through a pressure swing adsorption system to remove carbon monoxide, methane and part of the nitrogen thereby producing a fraction containing an increased amount of argon, and (b) passing the argon fraction to a cryogenic fractional distillation system to remove hydrogen and the remaining nitrogen in the fraction as a distillate product and to produce a pure argon product. In a second embodiment, the invention is directed to a method for recovering argon from a feed mixture comprising argon, carbon monoxide, methane, hydrogen, and nitrogen which comprises the steps of (a) passing the feed mixture through a first cryogenic fractional distillation system to remove carbon monoxide, hydrogen, and nitrogen as distillate products and to produce a fraction containing an increased amount of argon, and (b) passing the argon fraction to a second cryogenic fractional distillation system to remove methane and to produce pure argon as a distillate product.
摘要翻译：本发明涉及从包含氩气，一氧化碳，甲烷，氢气和氮气的进料混合物中回收氩的方法，其包括以下步骤：（a）使进料混合物通过变压吸附系统以除去一氧化碳，甲烷和部分氮气，从而产生含有增加量的氩的馏分，和（b）将氩馏分通入低温分馏系统以除去作为馏出物产物的馏分中的氢和剩余的氮，并产生纯的氩产品。在第二个实施方案中，本发明涉及从包含氩气，一氧化碳，甲烷，氢气和氮气的进料混合物中回收氩气的方法，该方法包括以下步骤：（a）使进料混合物通过第一低温分馏系统去除一氧化碳，氢气和氮气作为馏出物产物，并产生含有增加量的氩的馏分，和（b）将氩馏分通入第二低温分馏系统以除去甲烷并产生纯氩作为馏出物产品。

10. 发明授权

US4816039A PSA multicomponent separation utilizing tank equalization 失效
标题翻译： PSA多组分分离利用罐均衡
公开(公告)号：US4816039A
公开(公告)日：1989-03-28
申请号：US59172
申请日：1987-06-11
申请人： Ramachandran Krishnamurthy , Steve L. Lerner , Donald L. MacLean
发明人： Ramachandran Krishnamurthy , Steve L. Lerner , Donald L. MacLean
IPC分类号： B01D53/047 , C01B23/00 , B01D53/04
CPC分类号： B01D53/0476 , B01D53/053 , C01B23/00 , B01D2253/108 , B01D2256/18 , B01D2257/102 , B01D2257/7025 , B01D2259/40015 , B01D2259/40016 , B01D2259/40032 , B01D2259/40033 , B01D2259/40037 , B01D2259/40069 , B01D2259/40073 , B01D2259/402 , Y02C20/20 , Y02P20/156
摘要： The inclusion of one or more tanks in a two-bed pressure swing adsorption system provides for a further reduction in the pressure from which each bed is vented. According to the invention, following a bed pressure equalization step, the bed which is to undergo regeneration is equalized with at least one tank, which is at a lower pressure, in order to transfer part of the gas located in the bed void volume. After the bed is regenerated, it is again equalized with the same tank, now at a higher pressure than the bed, in order to return the conserved gas. This process increases yield by decreasing the loss of gas attributable to bed void volume. The combination of the two-bed process with one or more pressure equalization tanks for conserving void gas for subsequent bed repressurization rather than use as purge gas is unique to the present invention. It is best applied to multicomponent gas mixtures, in which a moderately adsorbed component is distributed between a higher pressure primary product stream containing a mildly adsorbed component and a lower pressure secondary product or vent stream containing a strongly adsorbed component. The present process has been applied to increase the yield of argon which is separated from a mixture consisting of hydrogen, argon, nitrogen and methane.
摘要翻译：将一个或多个罐体包含在双床变压吸附系统中可进一步降低每个床排出的压力。根据本发明，在床压均衡步骤之后，要进行再生的床与至少一个处于较低压力的罐相等，以便转移位于床空隙体积中的部分气体。在床再生后，再次与相同的罐均衡，现在处于比床高的压力下，以便返回保存的气体。该方法通过减少归因于床空隙体积的气体损失而提高产量。两床工艺与一个或多个压力平衡罐的组合，用于保留用于后续床再加压的空气气体而不用作吹扫气体是本发明独特的。最适用于多组分气体混合物，其中中等吸附组分分布在含有温和吸附组分的较高压力初级产物流和含有强吸附组分的低压次级产物或排气流之间。本方法已被应用于提高从由氢，氩，氮和甲烷组成的混合物中分离的氩的产率。

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