Adsorption process for the separation of gaseous mixtures,申请号US19770764508-传众专利搜索

Adsorption process for the separation of gaseous mixtures

申请公布号：US4299596(A)

申请号：US19770764508

申请日期：1977.02.01

申请公布日期：1981.11.10

申请人：

LINDE AKTIENGESELLSCHAFT

发明人：BENKMANN, CHRISTIAN

分类号：B01D53/04;B01D53/047;C01B3/56;(IPC1-7):B01D53/04

主分类号：B01D53/04

摘要：For the separation of gaseous mixtures: (a) passing a feed gas containing components A and B successively through two adsorption beds selected for component A to evolve an adsorption front of component A proximate the outflow end of the first adsorption bed, discharging an A-free product gas from the second adsorption bed, then interrupting the passing of the feed gas; (b) lowering the pressure of both adsorption beds in the adsorption direction so that proportions of unadsorbed component A are withdrawn from said first adsorption bed, and said proportions from the first adsorption bed are adsorbed in the second adsorption bed, and withdrawing an A-free gas from the second adsorption bed; (c) at the pressure of step (b), conducting a further gaseous mixture in the adsorption direction through both adsorption beds, the partial pressure of component A in said further gaseous mixture being equal to or higher than in the feed gas, interrupting the feeding of said further gaseous mixture before the breakthrough of component A through the second adsorption bed, and withdrawing an A-free gas from said second adsorption bed; (d) disconnecting both adsorption beds from one another; expanding the first adsorption bed loaded with component A to recover component A; expanding the second adsorption bed, partially loaded with component A countercurrently to the adsorption process and passing a purge gas countercurrently through the expanded second adsorption bed to desorb component A; and (e) reconnecting both adsorption beds and repeating step (a).