METHOD FOR HYDROGEN PREPARATION FROM HYDROCARBON AND ORGANIC RAW MATERIALS Russian patent published in 2009 - IPC C01B3/38 C01B3/56 

FIELD: chemistry.

SUBSTANCE: invention refers to the field of chemistry, namely to the methods for hydrogen preparation from hydrocarbon and/or organic raw materials. The method for hydrogen preparation includes periodic interchange of the following stages: a) hydrogen preparation by mixing the raw materials vapours with water vapour and pass of the obtained mixture through at least one mixed fixed bed consisting of particles of the catalyst for vapour hydrocarbon conversion and particles of carbon dioxide chemisorbent and b) periodic chemisorbent regeneration at elevated temperature in the flow of regenerating gas with removal of desorbing carbon dioxide in the regenerating gas flow. In the stage of chemisorbent regeneration the regenerating gas is the mix of the air with ignitable substance capable of catalytic oxidising with air oxygen liberating the heat to the catalyst particles. The temperature of the regenerating gas flow at the input to the layer of catalyst and chemisorbent particles is maintained lower than the onset temperature of the catalytic oxidising of the ignitable substance, and the flow regenerating gas is passed through the bed of catalyst particles and chemisorbent in the direction contrary to the direction of the flow of starting materials vapours fed together with water vapour. The starting materials are either light gaseous paraffins (particularly methane) as well as mixtures thereof (particularly natural gas) or light alcohols (particularly methanol or ethanol); the ignitable substance is either starting materials vapours or hydrogen.

EFFECT: invention allows hydrogen obtaining with minimal admixtures of carbon oxides.

7 cl, 1 dwg, 1 ex