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Hydrogen gas production

A conventional hydrogen plant design consist of the following steps; feed pre-treatment, steam reforming, CO shift conversion (HT shift and LT shift), CO2 removal and methanation. This hydrogen generation process is generally found in conventional refineries which either have no other source of hydrogen (such as the effluent from a catalytic reformer) or need a fixed amount of supplemental hydrogen. In order to reduce plant energy input and to employ a simpler design (e.g., easier to operate with less maintenance cost), plants have recently been built employing PSA recovery (pressure swing adsorption). The step generally employed in this type of plant are as follows; feed pre-treatment, steam reforming, CO conversion (HT shift), and PSA (molecular sieves). When methanol is used as feedstock, the process steps only consist of methanol reforming and PSA recovery. Süd-Chemie supplies all catalysts required for hydrogen production.