公开(公告)号：EP2709746A1

公开(公告)日：2014-03-26

申请号：EP12719735.8

申请日：2012-05-10

申请人： TOTAL RAFFINAGE CHIMIE

发明人： RIFFLART, Sébastien ,  ALMEIDA PEIXOTO RIBEIRO, Ana, Mafalda ,  GODINHO DE FARIA DOS SANTOS, Joao Carlos ,  EGIDIO RODRIGUES, Alirio

IPC分类号： B01D53/047

CPC分类号： B01D53/047 ,  B01D2256/16 ,  B01D2256/22 ,  B01D2257/108 ,  B01D2257/504 ,  B01D2259/40033 ,  B01D2259/40064 ,  B01D2259/404 ,  B01D2259/4062 ,  Y02C10/08

摘要： The invention is drawn to a cyclic pressure swing adsorption (PSA) process to recover an off-gas stream at high pressure with low energy consumption. Each cycle of said process comprises a blowdown phase consisting in lowering the pressure in an adsorbent bed from P high to P low , wherein said blowdown phase is divided into several partial blowdown phases, wherein the gas streams discharged during the partial blowdown phases are introduced into respective discharge tanks.