公开(公告)号：US20240350969A1

公开(公告)日：2024-10-24

申请号：US18642583

申请日：2024-04-22

Applicant: Chevron U.S.A. Inc.

Inventor： Nitesh Bhuwania ,  Daniel Chinn ,  Raja Ankush Jadhav ,  Zihan Huang

IPC: B01D53/22 ,  B01D71/06

CPC classification number: B01D53/228 ,  B01D71/06 ,  B01D2256/10 ,  B01D2256/12 ,  B01D2257/504 ,  B01D2258/01

Abstract: A process of preconcentrating CO2 in an exhaust gas stream includes flowing all the exhaust gas stream from an exhaust gas source to a CO2 preconcentration system. Within the CO2 preconcentration system, at least a portion of the exhaust gas stream is fed to a membrane separation module comprising a polymeric membrane that has a perm-selectivity for CO2 over N2 and O2, to produce a CO2 rich exhaust gas. The exhaust gas stream may initially have as low as 400 ppm CO2 and may be preconcentrated to over 8 vol. % CO2, thereby generating a more optimal feed for further treatment processes.