公开(公告)号：US20230067004A1

公开(公告)日：2023-03-02

申请号：US17759654

申请日：2021-01-26

Applicant: Research Triangle Institute

Inventor： Paul MOBLEY ,  Shaojun James ZHOU ,  Samuel John THOMPSON ,  Jak TANTHANA ,  Aravind Villava Rayer RABINDRAN ,  Marty LAIL

IPC: C02F1/28 ,  B01J20/20 ,  B01J20/28 ,  B01J20/34 ,  B01D53/14

Abstract: A method for reducing the concentration of amines in a wash liquid stream exiting a wash section in an acid gas scrubbing process includes introducing the wash liquid stream exiting the wash section of the acid gas scrubbing process to an adsorbent material, wherein the wash liquid stream has a first concentration of amines. The wash liquid stream having the first concentration of amines is flowed through the adsorbent material, and the adsorbent material retains at least a portion of the amines thereby providing a wash liquid stream having a second, reduced concentration of amines. The wash stream with reduced concentration of amines is recycled back to the wash section to remove amines more effectively from the acid gas being scrubbed. The adsorbent material can be regenerated for reuse. Amine recovered from the regenerated adsorbent material can be recycled to the process for reuse.