公开(公告)号：US3589104A

公开(公告)日：1971-06-29

申请号：US3589104D

申请日：1969-06-26

申请人： DOW CHEMICAL CO

发明人： PANZARELLA JOHN E

IPC分类号： B01D5/00 ,  B01D8/00 ,  B01D51/10 ,  B01D53/70 ,  B01D19/00

CPC分类号： B01D51/10 ,  B01D5/0003 ,  B01D5/0012 ,  B01D5/009 ,  B01D5/0093 ,  B01D5/0096 ,  B01D8/00 ,  B01D53/70

摘要： An improved method for the recovery of valuable organic compounds and deleterious air polluting chemicals from watercontaining process off-gases which comprises (1) contacting the process off-gases with a cold surface upon which a film of watermiscible liquid is maintained; (2) separating the noncondensible gases from the condensate which forms upon contact of the offgases with the cold wall and the water-miscible liquid; (3) separating the water-miscible liquid, water and condensate one from the other; (4) returning the water-miscible liquid to the first step to form the film on the cold wall and (5) recovering the condensates free of the water-miscible liquid and water.