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.

公开(公告)号：US20190105601A1

公开(公告)日：2019-04-11

申请号：US15971748

申请日：2018-05-04

Applicant: Chevron U.S.A. Inc.

Inventor： Daniel Chinn ,  Nitesh Bhuwania ,  Shabbir Husain ,  Ronald P. MacDonald ,  Tapan K. Das

IPC: B01D53/14 ,  C10L3/10 ,  E21B43/34

CPC classification number: B01D53/1468 ,  B01D2252/204 ,  B01D2256/24 ,  B01D2257/304 ,  C10L3/103 ,  C10L2290/46 ,  C10L2290/541 ,  C10L2290/548 ,  E21B43/34 ,  E21B43/40

Abstract: Disclosed are systems and methods for producing oil and gas while removing hydrogen sulfide from fluids produced from oil and gas reservoirs and injecting a sour gas stream containing the hydrogen sulfide into an underground formation. Hydrogen sulfide-selective membranes are used to debottleneck known systems and methods by removing hydrogen sulfide from bottlenecked plant process steps including sour gas compression, hydrogen sulfide removal and sour gas injection. Pressure ratio across the membranes can also be manipulated to provide further debottlenecking. Gas-gas eductors are also disclosed for use in leveraging relatively high-pressure streams to boost the pressure of low pressure streams. Oil production is thus increased.