-
公开(公告)号：US4266957A
公开(公告)日：1981-05-12
申请号：US65963
申请日：1979-08-13
Applicant: Wieslaw H. Isalski
Inventor： Wieslaw H. Isalski
CPC classification number: C01C1/0476 , B01D53/04 , F25J3/062 , F25J3/0655 , B01D2256/16 , B01D2259/4009 , B01D2259/403 , B01D2259/416 , F25J2205/66 , F25J2210/20 , F25J2220/02 , F25J2270/90 , Y02P20/52 , Y10S62/934
Abstract: Ammonia and hydrogen values are recovered from the purge gas from an ammonia synthesis recycle stream by removing the ammonia from the purge gas by adsorption in an ammonia adsorber, thereafter separating the hydrogen by cryogenic partial condensation, the refrigeration for which is provided by expanding and evaporating the condensate, and recovering the ammonia from the adsorber by heating a part of the hydrogen and using it as the regenerating gas for the adsorber, the heat for heating the hydrogen preferably being provided by combusting a part of the evaporated condensate recovered from the cryogenic partial condensation.
Abstract translation: 通过在氨吸附器中吸附除去来自吹扫气体的氨，然后通过低温部分冷凝分离氢，通过膨胀和蒸发提供的制冷，从氨合成循环流中将氨和氢值从清洗气体中回收 冷凝物，并且通过加热一部分氢气并将其用作吸附器的再生气体从吸附器中回收氨，优选通过燃烧从低温部分回收的蒸发的冷凝物的一部分提供加热氢的热量 缩合。
-
公开(公告)号：US4255406A
公开(公告)日：1981-03-10
申请号：US83952
申请日：1979-10-10
Applicant: Wieslaw H. Isalski , Terence R. Tomlinson
Inventor： Wieslaw H. Isalski , Terence R. Tomlinson
CPC classification number: C01C1/0476 , C01B3/506 , F25J3/062 , F25J3/068 , C01B2203/0465 , C01B2203/048 , F25J2210/20 , F25J2245/02 , F25J2270/90 , F25J2280/02 , Y02P20/52
Abstract: A process is disclosed for recovering hydrogen from an ammonia synthesis plant comprising(a) cooling a high pressure stream of said purge gas to a sub-ambient temperature at which substantially all of the methane and argon contained in said purge gas stream and a portion of the nitrogen condense,(b) expanding liquid and vapor components of the cooled high pressure stream to an intermediate pressure,(c) phase separating liquid and vapor components of the cooled and expanded purge gas stream,(d) expanding separated liquid component from step (c), and(e) heating expanded separated liquid component from step (d) and separated vapor component from step (c) in heat exchange with said high pressure stream of purge gas to cool the latter.
Abstract translation: 公开了一种用于从氨合成装置回收氢气的方法，其包括（a）将所述吹扫气体的高压流冷却至低于所述吹扫气流中所含的基本上所有的甲烷和氩气的一部分， 氮气冷凝，（b）将冷却的高压气流的液体和蒸汽组分膨胀到中间压力，（c）分离冷却和扩展的吹扫气体流的液体和蒸汽组分;（d）将分离的液体组分从步骤 （c），和（e）从步骤（d）中加热膨胀的分离的液体组分和将步骤（c）中分离的蒸气组分与所述高压吹扫气体流热交换以冷却。
-
公开(公告)号：US4380461A
公开(公告)日：1983-04-19
申请号：US208940
申请日：1980-11-21
Applicant: Alan A. Haslam , Wieslaw H. Isalski , Terence R. Tomlinson
Inventor： Alan A. Haslam , Wieslaw H. Isalski , Terence R. Tomlinson
CPC classification number: F25J3/062 , F25J3/068 , F25J2210/06 , F25J2210/20 , F25J2245/02 , F25J2280/02 , Y10S62/934
Abstract: In a process for the recovery of hydrogen from compressed purge gas withdrawn from a recyling gas stream of an ammonia synthesis wherein the hydrogen is separated from the purge gas by partial condensation at cryogenic temperatures, refrigeration is provided by expanding and evaporating the condensate so formed, and the partial pressure of the expanded condensate is lowered by withdrawing a bleed stream from said uncondensed gas, expanding said bleed stream and injecting it into said expanded condensate, condensation of nitrogen employed to purge the cold box for the cryogenic process is avoided by either injecting into the bleed stream a warmer gas provided from the uncondensed gas and/or the purge gas or expanding the condensate and bleed stream in stages with separate expansion thereof in an initial stage and injection of the bleed stream into the condensate prior to the final stage.
Abstract translation: 在从氨合成的再生气流中抽出的压缩吹扫气体回收氢气的过程中，其中通过在低温下部分冷凝将氢气与吹扫气体分离，通过膨胀和蒸发形成的冷凝物来提供制冷， 并且通过从所述未冷凝的气体中抽出出口流，膨胀所述排放流并将其注入到所述膨胀的冷凝物中来降低膨胀的冷凝物的分压，通过注入来避免用于清除低温过程的冷箱的氮的冷凝 从未冷凝的气体和/或吹扫气体中提供较热的气体，或者在初始阶段以分离的膨胀步骤逐步扩张冷凝物和排出流，并在最后阶段将排出流注入冷凝物中。
-
公开(公告)号：US4338108A
公开(公告)日：1982-07-06
申请号：US166834
申请日：1980-07-08
Applicant: Wieslaw H. Isalski , Gregory J. Ashton
Inventor： Wieslaw H. Isalski , Gregory J. Ashton
CPC classification number: F25J3/0285 , C01B23/00 , C01B3/506 , F25J3/0219 , F25J3/0257 , C01B2203/046 , C01B2203/0465 , C01B2203/048 , F25J2200/02 , F25J2200/30 , F25J2200/72 , F25J2200/76 , F25J2200/80 , F25J2205/04 , F25J2210/20 , F25J2270/02 , F25J2270/04 , F25J2270/42 , Y02P20/129 , Y10S62/924
Abstract: Argon is recovered from a tail gas stream remaining after recovery of hydrogen values from ammonia synthesis purge gas. In a first step, tail gas is cooled, preferably in a first heat exchanger then a refluxing exchanger, to separate a condensate containing methane, argon and some nitrogen and uncondensed gas containing substantially all residual hydrogen and some nitrogen. The condensate, after expansion, is fed into a first distillation column where methane is condensed, the overhead nitrogen and argon product being fed to a second column where argon product is condensed. The cold requirements of the process and heat for reboil and cooling for reflux for the columns are provided by an open cycle supplied with gaseous nitrogen from the second column as heat transfer fluid. Cooling for the refluxing exchanger is provided by an evaporating coolant comprising transfer fluid combined with the uncondensed nitrogen-hydrogen gas after expansion thereof.
Abstract translation: 从氨合成吹扫气体回收氢值后残留的尾气流中回收氩气。 在第一步骤中，优选在第一热交换器然后回流换热器中冷却尾气，以分离含有甲烷，氩气和一些氮气的冷凝物以及基本上全部残余氢气和一些氮气的未冷凝气体。 膨胀后的冷凝物进料到甲烷冷凝的第一蒸馏塔中，塔顶氮和氩产物进料到第二塔，其中氩产物被冷凝。 用于回流的再沸腾和冷却用于塔的冷却要求是通过供给来自第二塔的气态氮作为传热流体的开放循环来提供的。 用于回流换热器的冷却是通过蒸发冷却剂提供的，该蒸发冷却剂包括在膨胀之后与未冷凝的氮 - 氢气组合的转移流体。
-
公开(公告)号：US4312851A
公开(公告)日：1982-01-26
申请号：US83827
申请日：1979-10-11
Applicant: Wieslaw H. Isalski , Terence R. Tomlinson
Inventor： Wieslaw H. Isalski , Terence R. Tomlinson
CPC classification number: F25J3/068 , C01C1/0476 , F25J3/062 , F25J2210/20 , F25J2230/20 , F25J2240/02 , Y02P20/52
Abstract: A method of synthesizing ammonia by reacting a synthesis gas comprising nitrogen and hydrogen at superatmospheric pressure in a synthesis reaction zone with recycling of unreacting gas to the reacting zone is disclosed in which a purge gas stream is withdrawn at superatmospheric pressure and subjected to the steps of: (a) work expansion, (b) separation of methane and argon to form a gaseous product stream comprising nitrogen and hydrogen, (c) recompression of at least a portion of the gaseous product stream from step (b) using work generated in step (a), and (d) recycling of at least a portion of the recompressed product from step (c) to the reaction zone.Apparatus for effecting said process is also claimed.
Abstract translation: 公开了一种合成氨的方法，该方法是通过在合成反应区中使含氮和氢的合成气在超大气压下反应而将反应气体再循环到反应区，其中吹扫气流在超大气压下被排出， ：（a）工作膨胀，（b）分离甲烷和氩气以形成包含氮气和氢气的气态产物流，（c）使用在步骤（b）中产生的工作来重新压缩来自步骤（b）的气态产物流的至少一部分 （a）和（d）将来自步骤（c）的再压缩产物的至少一部分再循环到反应区。 还要求用于实现所述方法的装置。
