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公开(公告)号：US4461634A
公开(公告)日：1984-07-24
申请号：US368709
申请日：1982-04-15
Applicant: Melvyn Duckett , Gregory J. Ashton , David R. Salisbury
Inventor： Melvyn Duckett , Gregory J. Ashton , David R. Salisbury
CPC classification number: F25J3/0655 , B01D5/0036 , B01D5/0039 , C01B3/50 , C07C7/09 , F25J3/062 , F25J3/0635 , F25J3/0695 , F25J2210/12 , F25J2240/40 , F25J2245/02 , F25J2270/12 , F25J2270/18 , F25J2270/66 , F25J2280/02 , Y02B30/52 , Y02P20/124 , Y02P20/129 , Y10S62/912
Abstract: In a process for the separation of a gas mixture at superatmospheric pressure by partial condensation at cryogenic temperatures and wherein the separated condensate and uncondensed vapor are passed back as returning streams in indirect countercurrent heat exchange relationship with the incoming feed mixture, the power required for providing the refrigeration and energy requirements for the separation are reduced by supplying said requirements by means of a heat pump alone or together with at least one separate refrigeration cycle and/or some Joule-Thomson expansion of the condensate, and in the heat pump a compressed multi-component gaseous medium is condensed by heat exchange with said returning streams over a first temperature range and then expanded by Joule-Thomson expansion, and the expanded condensate is evaporated by heat exchange with the feed gas mixture over a lower temperature range than said first temperature range, and recycled for recompression.
Abstract translation: 在通过在低温下通过部分冷凝在高于大气压力下分离气体混合物的方法中，并且其中将分离的冷凝物和未冷凝的蒸气作为与进料进料混合物间接逆流热交换关系的返回流返回，提供所需的功率 通过单独的热泵或与冷凝物的至少一个分离的制冷循环和/或焦耳 - 汤姆森膨胀的一起提供所述要求来减少分离的制冷和能量需求，并且在热泵中，压缩多 - 组分气体介质在第一温度范围内与所述返回流体进行热交换而冷凝，然后通过焦耳 - 汤姆森膨胀膨胀，并且在比所述第一温度更低的温度范围内通过与进料气体混合物的热交换来蒸发膨胀的冷凝物 范围，并回收再压缩。
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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。
