公开(公告)号：US20230182075A1

公开(公告)日：2023-06-15

申请号：US17848863

申请日：2022-06-24

Applicant: Zhejiang University

Inventor： Mengxiang FANG ,  Yuwei WANG ,  Zhixiang XIA ,  Tao WANG ,  Qinhui WANG ,  Zhongyang LUO

IPC: B01D53/96 ,  B01D61/44 ,  B01D61/50

CPC classification number: B01D53/965 ,  B01D61/445 ,  B01D61/50 ,  B01D2313/243 ,  B01D2313/50 ,  B01D2311/04 ,  B01D2311/08 ,  B01D2317/022 ,  B01D2311/2649 ,  B01D2317/08 ,  B01D2257/504 ,  B01D2252/204

Abstract: A two-stage electrodialysis system and a method for recovering waste CO2-lean amine solvent are provided. The system includes an amine solution pretreatment filtering system, a C-A homogeneous membrane electrodialysis device, a BP-A bipolar membrane electrodialysis system, and a CO2 recovery and capture system. The C-A homogeneous membrane electrodialysis system includes a material chamber, a C-A homogeneous membrane electrodialysis device, a concentrated HSSs waste solution chamber, an electrode solution chamber, and corresponding pipelines and peristaltic pumps. The BP-A bipolar membrane electrodialysis system includes a secondary feed chamber, a BP-A bipolar membrane electrodialysis device, an acid liquor chamber, an electrode solution chamber, and corresponding pipelines and peristaltic pumps. The waste CO2-lean amine solvent enters the material chamber after passing through the amine solution pretreatment filtering system. The concentrated HSSs waste solution chamber is connected to the secondary feed chamber by a buffer tank.