Under certain temperature and pressure, methanol and steam undergo methanol cracking reaction and carbon monoxide conversion reaction to generate hydrogen and carbon dioxide with the catalyst. This is a multi-component and multi reaction gas-solid catalytic reaction system, and the chemical equation is as follows:
CH3OH → CO +2H2(1)
H2O+CO → CO2 +H2(2)
CH3OH +H2O → CO2 +3H2(3)
Hydrogen and carbon dioxide produced by reforming reaction are separated by pressure swing adsorption (PSA) to obtain high-purity hydrogen.