-
公开(公告)号：US4857083A
公开(公告)日：1989-08-15
申请号：US262414
申请日：1988-10-25
申请人： Stephen P. DiMartino
发明人： Stephen P. DiMartino
IPC分类号： B01D53/047
CPC分类号： B01D53/0476 , B01D2253/102 , B01D2253/104 , B01D2253/106 , B01D2253/108 , B01D2256/24 , B01D2257/504 , B01D2259/40052 , B01D2259/4061 , B01D2259/4062 , B01D53/0446 , Y02C10/08 , Y02E50/346
摘要： The present invention is a continuous vacuum swing adsorption process for the fractionation of a multi-component feed gas mixture containing methane as a primary component and predominantly CO.sub.2 as a secondary component. Mulit-component feed gas is passed through a plurality of adsorption columns containing adsorbent beds which selectively retain the secondary components while the primary component is discharged from each column and collected as product. Carbon dioxide is desorbed from the adsorbent beds by a vacuum assisted internal rinse step wherein a pressurized first adsorption column is operatively connected to an evacuated second adsorption column causing CO.sub.2 and other secondary components to be countercurrently swept out of the first column and into the second column. Vacuum assisted internal rinsing of adsorption columns effectively replaces pump-driven rinse steps resulting in a substantial reduction in process power requirements. Additionally, process vacuum requirements are significantly reduced because an evacuated adsorption column is used as a vacuum source for internally rinsing another adsorption column.
摘要翻译： 本发明是用于分馏含有甲烷作为主要组分并主要是CO 2作为次要组分的多组分原料气混合物的连续真空挥发吸附方法。 多组分进料气体通过包含吸附剂床的多个吸附塔，该吸附床选择性地保留次要组分，而主要组分从每个塔排出并作为产物收集。 二氧化碳通过真空辅助的内部漂洗步骤从吸附剂床解吸，其中加压的第一吸附塔可操作地连接到抽真空的第二吸附塔，使得二氧化碳和其它二级组分逆流地从第一塔中扫出并进入第二塔 。 吸附柱的真空辅助内部冲洗有效地替代了泵驱动的冲洗步骤，从而大大降低了过程功率要求。 另外，由于使用真空吸附塔作为内部冲洗另一个吸附塔的真空源，因此工艺真空要求显着降低。
-
公开(公告)号：US4696806A
公开(公告)日：1987-09-29
申请号：US849660
申请日：1986-04-09
CPC分类号： C01B3/508
摘要： The present invention is a process for recovering hydrogen from a hydrogen-containing feed stream using a metal hydride adsorption cycle. The adsorption cycle utilizes at least six separate metal hydride adsorption beds, and has been expanded over conventional adsorption cycles to include several additional process steps. Each of the separate beds successively undergoes adsorption, first equalization, rinse or second equalization, desorption, repressurization with rinse effluent, repressurization with equalization effluent and final repressurization with feed gas.
摘要翻译： 本发明是使用金属氢化物吸附循环从含氢进料流中回收氢的方法。 吸附循环使用至少六个单独的金属氢化物吸附床，并且已经在常规吸附循环中膨胀以包括几个额外的工艺步骤。 每个单独的床依次经历吸附，第一均衡，漂洗或第二均衡，解吸，用冲洗流出物再加压，用均化流出物再加压和用进料气进行最终再加压。
-
公开(公告)号：US4654047A
公开(公告)日：1987-03-31
申请号：US769204
申请日：1985-08-23
CPC分类号： F25J3/0219 , B01D53/229 , C01B3/501 , C01B3/506 , F25J3/0233 , F25J3/0252 , F25J3/08 , C01B2203/046 , C01B2203/047 , C01B2203/048 , C01B2203/0495 , F25J2205/40 , F25J2205/80 , F25J2205/82 , F25J2210/12 , F25J2215/10 , F25J2245/02 , Y10S62/931
摘要： The present invention involves a process for recovering hydrogen from a feed gas mixture comprising hydrogen and at least one other component. The feed gas mixture is initially separated in a membrane separation unit to produce a hydrogen-rich stream and a hydrogen-lean stream. The hydrogen-lean stream is subsequently treated in a cryogenic separation unit to remove a portion of the non-hydrogen components and produce a hydrogen-enriched stream. The hydrogen-enriched stream from the cryogenic separation unit is recycled and combined with the feed gas mixture to the membrane separation unit.
摘要翻译： 本发明涉及从包含氢和至少一种其它组分的原料气混合物中回收氢气的方法。 原料气体混合物最初在膜分离单元中分离以产生富氢流和贫氢流。 随后在低温分离单元中处理贫氢气流以除去一部分非氢组分并产生富氢流。 来自低温分离单元的富氢流被再循环并与进料气体混合物组合到膜分离单元。
-
公开(公告)号：US5006132A
公开(公告)日：1991-04-09
申请号：US537182
申请日：1990-06-12
IPC分类号： B01D53/22
CPC分类号： B01D53/22
摘要： The present invention is directed to a method for removing a higher purity sidestream of a product gas from a main product pipeline gas flow stream of lower purity using a membrane selective for the product gas in contrast to impurities contained in the main product pipeline gas. The process avoids capital intensive apparatus or energy intensive processing and returns the reject gas from the membrane to the pipeline for inclusion with the main product pipeline gas. Recovery of a higher purity component of a main pipeline product gas containing that component is also contemplated.
摘要翻译： 本发明涉及一种用于从主产品管道气流中除去主要产品管道气流的较纯纯度侧流的方法，所述主要产物管道气体流是与主要产品管道气体中所含的杂质相比使用对产物气体有选择性的膜。 该过程避免了资本密集型设备或能量密集型处理，并将废气从膜返回到管道以与主产品管道气体一起包含。 还考虑回收含有该组分的主要管道产品气体的较高纯度组分。
-
公开(公告)号：US4857082A
公开(公告)日：1989-08-15
申请号：US244769
申请日：1988-09-15
CPC分类号： C01B23/00 , B01D53/22 , C01B3/501 , C01C1/0482 , C01B2203/0405 , C01B2203/0465 , C01B2203/047 , C01B2203/0475 , C01B2203/048 , Y02P20/52
摘要： A permeator system for separating at least one gaseous component from a feed gas mixture containing at least one other component using a semi-permeable membrane is disclosed which maintains high permeate product purity and desired component recovery during periods of turn-down in capacity. In accordance with the present invention, the permeator system contains a series of flow and pressure sensors and valves which regulate differential pressure across the membrane based upon permeate product demand or feed availability.
-
公开(公告)号：US4952219A
公开(公告)日：1990-08-28
申请号：US415017
申请日：1989-09-29
CPC分类号： B01D53/229 , B01D53/268
摘要： A process is provided for the low temperature separation of a high purity gas product at lower power requirements by permeating a feed gas stream through a membrane having a water-to-gas-product selectivity of at least about 100, separating water from the gas stream, feeding the partially dried gas stream through a molecular sieve to remove residual water, and supplying the dried gas stream to a low temperature separation unit to separate gas product(s) from the gas stream.
摘要翻译： 提供了一种方法，用于通过将进料气流通过至少约100的水 - 气 - 产物选择性的膜渗透进料气流，将低分辨率的气体产物以较低的功率要求进行低温分离， 将部分干燥的气流通过分子筛进料以除去残留的水，并将干燥的气流供应到低温分离单元以将气体产物与气流分离。
-
公开(公告)号：US4704267A
公开(公告)日：1987-11-03
申请号：US866036
申请日：1986-05-21
申请人： Stephen P. DiMartino
发明人： Stephen P. DiMartino
CPC分类号： C01B3/047 , C01B3/508 , Y02E60/364
摘要： High purity hydrogen is produced at high recovery from liquid anhydrous ammonia. Ammonia is vaporized and subsequently dissociated into is constituents. The resulting dissociated gas stream is passed to an adiabatic metal hydride purification unit to absorb hydrogen present in the stream. The adsorbed hydrogen is then recovered as high purity product.
摘要翻译： 从液态无水氨回收高纯度产生高纯度氢。 氨蒸发，随后分解为成分。 将所得离解的气流送至绝热金属氢化物净化单元以吸收流中存在的氢。 然后将吸附的氢气作为高纯度产物回收。
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.009 秒)
