TY - JOUR
T1 - Catalyst-free ceramic-carbonate dual-phase membrane reactors for high-temperature water gas shift
T2 - A simulation study
AU - Lin, Jerry Y.S.
AU - Meng, Lie
AU - Ovalle-Encinia, Oscar
N1 - Publisher Copyright:
© 2021 American Chemical Society. All rights reserved.
PY - 2021/3/10
Y1 - 2021/3/10
N2 - Water gas shift (WGS) reaction enhanced by a membrane reactor technology has emerged as a high-efficiency alternative to conventional fixed-bed reactors in integrated gasification combined cycle (IGCC) plants for the electrical power generation with carbon dioxide capture. Herein, the WGS performance of a catalyst-free membrane reactor made of a CO2- permeable ceramic-carbonate dual-phase (CCDP) membrane for converting coal gasification syngas to H2 with CO2capture is studied using a one-dimensional and nonisothermal mathematical model coupled with a CO2permeation equation. The catalyst-free CCDP membrane reactor offers significantly enhanced WGS performance at high reaction pressures than a fixed-bed reactor. At 30 atm and 900°C, WGS conducted in the single-stage, catalyst-free CCDP membrane reactor features a CO conversion >95%, a pure (100%) CO2flow at the permeate side with ultrahigh CO2capture ratio (>98%), and a retentate stream consisting of 100% recovered H2 at a H2 purity >90%. Due to a strong shift in thermodynamic equilibrium and the unique membrane characteristics, the CCDP membrane reactor achieves a superior performance in WGS, which will trigger innovation in catalytic membrane reactors and increase the competitiveness of a membrane reactor technology-based IGCC process with CO2capture.
AB - Water gas shift (WGS) reaction enhanced by a membrane reactor technology has emerged as a high-efficiency alternative to conventional fixed-bed reactors in integrated gasification combined cycle (IGCC) plants for the electrical power generation with carbon dioxide capture. Herein, the WGS performance of a catalyst-free membrane reactor made of a CO2- permeable ceramic-carbonate dual-phase (CCDP) membrane for converting coal gasification syngas to H2 with CO2capture is studied using a one-dimensional and nonisothermal mathematical model coupled with a CO2permeation equation. The catalyst-free CCDP membrane reactor offers significantly enhanced WGS performance at high reaction pressures than a fixed-bed reactor. At 30 atm and 900°C, WGS conducted in the single-stage, catalyst-free CCDP membrane reactor features a CO conversion >95%, a pure (100%) CO2flow at the permeate side with ultrahigh CO2capture ratio (>98%), and a retentate stream consisting of 100% recovered H2 at a H2 purity >90%. Due to a strong shift in thermodynamic equilibrium and the unique membrane characteristics, the CCDP membrane reactor achieves a superior performance in WGS, which will trigger innovation in catalytic membrane reactors and increase the competitiveness of a membrane reactor technology-based IGCC process with CO2capture.
UR - http://www.scopus.com/inward/record.url?scp=85103499797&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85103499797&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.1c00541
DO - 10.1021/acs.iecr.1c00541
M3 - Article
AN - SCOPUS:85103499797
SN - 0888-5885
VL - 60
SP - 3581
EP - 3588
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 9
ER -