Treatment for flue gas desulfurization absorption liquid |
|||||||
| 申请号 | JP8900786 | 申请日 | 1986-04-17 | 公开(公告)号 | JPS62244427A | 公开(公告)日 | 1987-10-24 |
| 申请人 | Kureha Chem Ind Co Ltd; | 发明人 | AOKI HARUO; KUDO YOSHIHIKO; | ||||
| 摘要 | PURPOSE: To separate and remove Cl - contained in gypsum saturated liquid while preventing deposition of gypsum by subjecting gypsum saturated liquid to clarifying treatment and thereafter introducing it into an electrodialysis device consisting of a cation exchange membrane and a monovalent anionic permselective membrane. CONSTITUTION: An electrodialysis device is constituted of an intermediate chamber M partitioned by monovalent anionic permselective membranes A 1 , A 2 , a concentration chamber C partitioned by A 2 and a cation exchange membrane K and desalting chambers D partitioned by K and A 1 . Gypsum saturated liquid is introduced into the desalting chamber D through a line 1 and Cl - contained in the liquid is passed through the membranes A 1 , A 2 and collected in the concentration chamber C. In this case, SO 4 2- is partially passed through the membrane A 1 but is not passed through the membrane A 2 and cation is passed through the membrane K and transferred to the concentration chamber C but is not passed through the membrane A 2 and therefore the deposition of gypsum is prevented. Treated liquid is discharged through a line 5 and recirculated and Cl - concentrated liquid is discharged through a line 3 and treated as waste water. COPYRIGHT: (C)1987,JPO&Japio |
||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
QQ群二维码
意见反馈
意见反馈