Robust Low-Cost Water-Gas Shift Membrane Reactor for High-Purity Hydrogen Production form Coal-Derived Syngas

Techno-Economic Analysis of Coal-Based Hydrogen and Electricity Cogeneration Processes with CO2 Capture

“…( 12 The mechanical efficiency of pressure changers such as compressors and expanders is 1, while their isentropic efficiency is 0.8-0.85. (16) In the membrane reactor, sweep gas and feed gas flow countercurrently. (17) In the membrane-enhanced WGS reactor, the pressure at the reaction side is 3.7 MPa, while the pressure at the product side varies from 1 to 2 MPa.…”

“…Removal of hydrogen from the reaction side enhances the WGS reaction, which is limited by thermodynamic equilibrium. It is reported that the molar ratio between H 2 O and CO in the reaction side can be as low as 1.6 for a 95% CO conversion at ∼400 °C . The exhaust gas from the reaction side, which is a concentrated CO 2 stream mixed with CO, hydrogen, N 2 , etc., is cooled and liquefied.…”

“…It is reported that the molar ratio between H 2 O and CO in the reaction side can be as low as 1.6 for a 95% CO conversion at ∼400 °C. 16 The exhaust gas from the reaction side, which is a concentrated CO 2 stream mixed with CO, hydrogen, N 2 , etc., is cooled and liquefied. Noncondensable gases are separated and then combusted for heat and power generation.…”