화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.32, No.8, 1522-1527, August, 2015
DOI10.1007/s11814-014-0359-x  Export Citation
Hydrogen selectivity and permeance effect on the water gas shift reaction (WGSR) in a membrane reactor
Hankwon Lim†
  • Department of Chemical Systematic Engineering, Catholic University of Daegu, 13-13, Hayang-ro, Hayang-yep, Gyeongsan, Gyeongbuk 712-702, Korea
E-mail:
Simulated results are presented using a reaction rate equation and a one-dimensional reactor model for a water gas shift reaction (WGSR) in a membrane reactor (MR) with a feed stream obtained from coal gasifiers. CO conversion in a MR at 423-573 K was higher than equilibrium conversion at the same temperature. The effect of two important parameters of a membrane, hydrogen selectivity and hydrogen permeance, on MR performance was studied and hydrogen selectivity was favorable for enhanced CO conversion, reduced CO concentration, and enhanced fuel-cell grade hydrogen. Hydrogen permeance was also favorable for CO conversion enhancement in a MR due to an increased driving force between the shell side (retentate) and the tube side (permeate) of a membrane. The criteria of a hydrogen permeance of higher than 8×10.8 mol m.2s.1Pa.1 and a hydrogen selectivity of 100 were suggested to produce a fuel-cell grade hydrogen (CO concentration less than 50 ppm) in the permeate and a concentrated CO2 (more than 90%) in the retentate simultaneously in a MR.
Keywords:Water Gas Shift Reaction (WGSR);Membrane Reactor (MR);Hydrogen Selectivity;Hydrogen Permeance;Numerical Simulation
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