公开(公告)号：US4950462A

公开(公告)日：1990-08-21

申请号：US250168

申请日：1988-09-28

申请人： Genroku Nakao ,  Hiroshi Ishisaka ,  Shigehito Takamoto ,  Yasuyuki Nishimura

发明人： Genroku Nakao ,  Hiroshi Ishisaka ,  Shigehito Takamoto ,  Yasuyuki Nishimura

IPC分类号： B01D53/14 ,  C01B32/40

CPC分类号： C01B31/18 ,  B01D53/14 ,  B01D53/1493

摘要： CO is recovered from a CO-containing gas by contacting a CO-containing gas with a non-aqueous CO-absorbing solution comprising 3 to 6 moles/l of hexametaphosphateamine, 1 to 4 moles/l of cuprous chloride, 0.1 to 1% by weight of water and an organic solvent, thereby absorbing CO into the CO-absorbing solution from the CO-containing gas, and then atomizing the CO-absorbed solution, thereby stripping CO from the CO-absorbed solution and obtaining a CO gas, while recycling the CO-freed absorbing solution to the absorption of CO from the CO-containing gas with remarkable reduction in the corrosion rate on apparatus materials without impairing the CO absorption, and use of a two-fluid, simultaneous atomizing means for atomizing the CO-absorbed solution together with the vapor of the organic solvent can improve the CO stripping rate, and reduce the CO recovery cost.