公开(公告)号：US5707425A

公开(公告)日：1998-01-13

申请号：US655872

申请日：1996-05-21

申请人： Joseph S. D'Amico ,  Herbert Edward Reinhold, III ,  Kent S. Knaebel

发明人： Joseph S. D'Amico ,  Herbert Edward Reinhold, III ,  Kent S. Knaebel

IPC分类号： B01D53/047 ,  B01D53/22 ,  C01B23/00

CPC分类号： B01D53/04 ,  B01D53/047 ,  B01D53/229 ,  C01B23/0052 ,  C01B23/0094 ,  B01D2253/102 ,  B01D2253/104 ,  B01D2253/106 ,  B01D2253/304 ,  B01D2256/18 ,  B01D2257/11 ,  B01D2259/404 ,  B01D2259/406 ,  B01D2259/41 ,  C01B2210/001 ,  C01B2210/0014 ,  C01B2210/0031 ,  C01B2210/0068 ,  C01B2210/007 ,  F25J2250/02

摘要： The present process is directed to the efficient recovery of helium gas from gas streams which contain about 25 percent by volume or more helium. The process comprises two stages of pressure swing adsorption, each stage being comprised of a plurality of interconnected adsorbent beds. In the first stage of pressure swing adsorption which is comprised of about five phases, the helium content of the gas stream is increased to 95 percent by volume or more. A secondary product gas stream from the first stage of pressure swing adsorption is fed to the second stage of pressure swing adsorption. The second stage of pressure swing adsorption increases the helium content of this primarily non-helium product gas to more than about 50 percent by volume. This gas now with a helium content of more than about 50 percent by volume is fed along with the gas stream as the input gas to the first stage of pressure swing adsorption.

摘要翻译： 本方法涉及从含有约25体积％或更多氦气的气流中有效地回收氦气。 该方法包括两个阶段的变压吸附，每个阶段由多个相互连接的吸附床组成。 在由五相组成的变压吸附的第一阶段中，气流的氦含量增加至95体积％以上。 来自变压吸附的第一阶段的二次产物气流被供给到变压吸附的第二阶段。 变压吸附的第二阶段使这种主要的非氦产物气体的氦含量增加到超过约50体积％。 现在具有大于约50体积％的氦含量的气体与作为输入气体的气流一起供入到变压吸附的第一阶段。

公开(公告)号：US5792239A

公开(公告)日：1998-08-11

申请号：US680059

申请日：1996-07-15

申请人： Herbert Edward Reinhold, III ,  Kent S. Knaebel ,  Mark Huber ,  David R. King

发明人： Herbert Edward Reinhold, III ,  Kent S. Knaebel ,  Mark Huber ,  David R. King

IPC分类号： B01D53/047 ,  C10G5/02 ,  C10L3/10

CPC分类号： B01D53/047 ,  C10G5/02 ,  C10L3/10 ,  B01D2253/102 ,  B01D2253/116 ,  B01D2253/304 ,  B01D2256/10 ,  B01D2256/24 ,  B01D2257/102 ,  B01D2257/504 ,  B01D2257/702 ,  B01D2259/40003 ,  B01D2259/40015 ,  B01D2259/40032 ,  B01D2259/403 ,  B01D53/0476 ,  Y02C10/08

摘要： A natural gas feed stream containing significant quantities of nitrogen and/or carbon dioxide can be increased to a content of greater than 95 percent by volume of natural gas, and preferably greater than about 98 percent, by passing the natural gas feed stream sequentially through three adsorbent beds that are cycled through seven phases comprising: an adsorption phase to adsorb a first gas, a first depressurization phase to remove feed gas from the voids in the adsorbent bed, a recycle phase to remove a second gas from the adsorbent by the passage of a second depressurization gas therethrough and to produce a recycle gas, a second depressurization phase to reduce the adsorbent bed pressure to about ambient and to produce the second depressurization gas, an evacuation phase where the pressure in the adsorbent is further reduced and an enriched primary gas product stream recovered, a pressurization phase where the pressure in the adsorbent bed is increased using secondary product gas from a bed in an adsorption phase, and further pressurizing the adsorbent bed in a pressurization phase by the flow of the recycle gas and feed gas into the adsorbent bed. Various gases can be separated using this process. Nitrogen can be removed from natural gas (adsorbed gas) and carbon dioxide (adsorbed gas) can be removed from natural gas.

摘要翻译： 含有大量氮和/或二氧化碳的天然气进料流可以通过天然气进料流顺序地通过三次而增加到大于95％体积比的天然气，优选大于约98％ 吸附床循环通过七相，包括：吸附第一气体的吸附相，第一减压阶段，以从吸附剂床中的空隙中除去进料气体;再循环阶段，以通过第二气体从吸附剂中除去第二气体 第二减压气体，并产生循环气体;第二减压阶段，将吸附剂床压力降低到大约环境温度并产生第二减压气体;抽气阶段，其中吸附剂中的压力进一步降低，并且富集的初级气体 产物流回收，其中使用二次产物气体f增加吸附剂床中的压力的​​加压阶段 吸附床中的床，并且通过再循环气体和进料气体流进入吸附剂床，在加压阶段进一步加压吸附剂床。 可以使用该方法分离各种气体。 氮气可以从天然气（吸附气体）中除去，二氧化碳（吸附气体）可以从天然气中去除。