公开(公告)号：US4914218A

公开(公告)日：1990-04-03

申请号：US313580

申请日：1989-02-17

申请人： Ravi Kumar ,  Wilbur C. Kratz ,  David L. Rarig ,  David E. Guro ,  William P. Schmidt

发明人： Ravi Kumar ,  Wilbur C. Kratz ,  David L. Rarig ,  David E. Guro ,  William P. Schmidt

IPC分类号： B01D53/047

CPC分类号： B01D53/0476 ,  B01D2253/108 ,  B01D2256/16 ,  B01D2256/20 ,  B01D2256/22 ,  B01D2256/24 ,  B01D2257/102 ,  B01D2257/406 ,  B01D2257/502 ,  B01D2257/504 ,  B01D2257/7025 ,  B01D2259/40001 ,  B01D2259/40015 ,  B01D2259/40016 ,  B01D2259/4003 ,  B01D2259/40032 ,  B01D2259/40037 ,  B01D2259/40041 ,  B01D2259/40052 ,  B01D2259/40066 ,  B01D2259/40067 ,  B01D2259/40069 ,  B01D2259/40073 ,  B01D2259/40075 ,  B01D2259/404 ,  Y02C10/08 ,  Y02C20/20

摘要： An improved pressure swing adsorption process is disclosed for the recovery of two individual components from a multicomponent gas mixture. The process utilizes a first group of adsorbent beds selective for the secondary component product and a second group of beds selective for tertiary impurities in the mixture. The gas mixture is passed through the first and second beds in series and high purity primary component product is discharged from the second beds. The secondary component product is recovered by desorption from the first beds. Product recovery is improved by recycling depressurization gas from the first beds and by several novel pressure equalization steps. The process can be used to recover high-purity hydrogen and carbon dioxide from a gas mixture containing these components along with minor amounts of methane, carbon monoxide, and nitrogen.

公开(公告)号：US5073356A

公开(公告)日：1991-12-17

申请号：US586359

申请日：1990-09-20

申请人： David E. Guro ,  Ravi Kumar ,  David M. Nicholas ,  Gary S. Roth

发明人： David E. Guro ,  Ravi Kumar ,  David M. Nicholas ,  Gary S. Roth

IPC分类号： B01D53/04 ,  B01D53/22 ,  C01B3/50 ,  C01B3/56 ,  C01B32/40

CPC分类号： C01B31/18 ,  C01B3/501 ,  C01B3/56 ,  C01B2203/0405 ,  C01B2203/043 ,  C01B2203/0465 ,  C01B2203/047 ,  C01B2203/0475 ,  C01B2203/048 ,  Y02C10/08 ,  Y02P20/125

摘要： The present invention is an integrated process for the adsorptive recovery of a high purity carbon monoxide product from a gas mixture containing hydrogen, carbon monoxide, carbon dioxide, methane, and nitrogen, with the potential additional recovery of a hydrogen-rich stream and the recycle of the resulting gas mixture to a reformation reaction to produce the gas mixture with a more favorable carbon monoxide and hydrogen product slate. Separate carbon dioxide recovery can be performed. Hydrogen recovery can be either by adsorptive or by membrane technology. The process achieves high recoveries at reduced capital cost and at reduced product cost.

公开(公告)号：US4846851A

公开(公告)日：1989-07-11

申请号：US113787

申请日：1987-10-27

申请人： David E. Guro ,  Joseph P. Bushinsky ,  David M. Nicholas

发明人： David E. Guro ,  Joseph P. Bushinsky ,  David M. Nicholas

IPC分类号： C01B3/02

CPC分类号： C01B3/025

摘要： Crude ammonia synthesis gas is obtained by primary steam reforming of a hydrocarbon gas mixture rich in methane, such as natural gas, followed by secondary reforming of the primary reformate with added air and shift conversion of the contained CO to CO.sub.2. The shift conversion product is first freed of contained CO.sub.2 by selective absorption in a novel PSA unit having an integrated B section for removal of remaining impurities such as carbon monoxide and methane, thereby providing as product a gas stream comprised of hydrogen and nitrogen in approximate 3:1 molar ratio accompanied by a small amount or argon derived from the air stream used in the secondary reforming step. Alternative embodiments are disclosed for removal of CO from the gas stream, before its entry into the NH.sub.3 conversion operation; any residual CO that might have slipped thorugh the absorbent bed of the B section is converted to CH.sub.4.

摘要翻译： 原氨合成气是通过对富含甲烷的烃类气体混合物如天然气进行一次蒸汽重整，然后通过添加空气二次重整初级重整产物并将所含CO转化为CO 2而获得的。 转移产物首先通过选择性吸收在具有整合的B部分的新型PSA单元中除去含有CO 2，以除去诸如一氧化碳和甲烷的剩余杂质，从而提供由氢和氮组成的气流约3 ：1摩尔比率伴有少量或来自二次重整步骤中使用的空气流的氩。 公开了用于在进入NH 3转化操作之前从气流中除去CO的替代实施方案; 任何残留的CO可能已经滑倒了B部分的吸收床被转换成CH4。