公开(公告)号：US20230277973A1

公开(公告)日：2023-09-07

申请号：US17801941

申请日：2020-07-17

Applicant: Commonwealth Scientific and Industrial Research Organisation

Inventor： Colin D. Wood ,  Matthew B. Myers ,  Cameron White

IPC: B01D53/02 ,  B01J20/26 ,  B01J20/28 ,  B01J20/34 ,  C08G73/02

CPC classification number: B01D53/02 ,  B01J20/262 ,  B01J20/264 ,  B01J20/267 ,  B01J20/3466 ,  B01J20/28047 ,  C08G73/0206 ,  B01D2253/202 ,  B01D2257/504 ,  C08G2210/00

Abstract: The present application is directed to processes for removing carbon dioxide (CO2) from low CO2 concentration gaseous streams. The process comprises contacting the gaseous stream with a hydrogel for absorbing at least some CO2 from the gaseous stream. The hydrogel comprises a cross-linked hydrophilic polymer comprising a hydrophilic polymer cross-linked with a cross-linking agent. Processes for preparing the hydrogel, types of hydrogels, using the hydrogel to remove CO2 from gaseous streams, and regenerating the hydrogel to recover absorbed CO2 from the hydrogel are also disclosed.