公开(公告)号：US06475265B1

公开(公告)日：2002-11-05

申请号：US09176336

申请日：1998-10-22

Applicant: Mohamed Safdar Allie Baksh ,  Atanas Serbezov ,  Frank Notaro ,  Frederick Wells Leavitt

Inventor： Mohamed Safdar Allie Baksh ,  Atanas Serbezov ,  Frank Notaro ,  Frederick Wells Leavitt

IPC: B01D53047

CPC classification number: C01B13/0259 ,  B01D53/047 ,  B01D2253/102 ,  B01D2253/108 ,  B01D2256/12 ,  B01D2256/18 ,  B01D2257/102 ,  B01D2257/104 ,  B01D2257/11 ,  B01D2257/504 ,  B01D2257/80 ,  B01D2259/40003 ,  B01D2259/40052 ,  B01D2259/40075 ,  B01D2259/40079 ,  B01D2259/40081 ,  B01D2259/402 ,  B01D2259/41 ,  B01D2259/4146 ,  C01B2210/0046 ,  C01B2210/0051 ,  C01B2210/0062 ,  Y02C10/08 ,  Y02P20/152

Abstract: The present invention is a two stage PSA process for producing high purity oxygen from a feed air stream. Water, carbon dioxide and nitrogen are removed in a first stage. An oxygen selective adsorbent is used to adsorb oxygen in the second stage. High purity oxygen product is recovered during regeneration of the second stage. Importantly, the high purity of the oxygen product is achieved without inclusion of an oxygen rinse step in the process cycle. The high purity oxygen product is obtained by collecting the middle cut of the second stage effluent stream during regeneration.

Abstract translation: 本发明是一种用于从进料空气流中生产高纯氧的两阶段PSA方法。 在第一阶段除去水，二氧化碳和氮气。 氧选择性吸附剂用于在第二阶段吸附氧气。 在第二阶段的再生期间回收高纯度氧产物。 重要的是，氧气产物的高纯度是在工艺循环中不包含氧漂洗步骤的。 通过在再生期间收集第二阶段流出物流的中间馏分来获得高纯度氧产物。