Hydrogen production by steam reforming of methanol

In the methanol catalytic hydrogen production process, the technologies with application prospects are mainly hydrogen production by steam reforming of methanol, hydrogen production by partial oxidation of methanol, and hydrogen production by methanol decomposition.

①　Hydrogen production by steam reforming of methanol

CH3OH + H2O —→ CO2 + 3H2

△H0298= +40.5kJ/mol

The feedstock methanol and desalted water are preheated and vaporized,superheated to the reaction temperature, and then catalytically reformed into hydrogen and carbon dioxide mixture through catalyst bed.After heat exchange, cooling, condensation, and water washing, the mixed gas is sent to a separation device (such as a PSA system) for separation, and finally the product hydrogen with high purity is obtained.At present, the Cu-ZnO/Al2O3 catalyst is mainly used in industry, which has the advantages of low reaction temperature, high reactivity, and high hydrogen selectivity.