METHOD OF PRODUCTION OF HYDROGEN-CONTAINING GAS AND REGENERATION OF ABSORBENT USED IN THIS METHOD Russian patent published in 2007 - IPC C01B3/38 B01J20/04 B01J20/34 B01D53/96 

FIELD: production of hydrogen-containing gas suitable for supply of low-temperature fuel cells in self-contained small-sized electric generators.

SUBSTANCE: hydrogen-containing gas is produced on fixed layer containing the mixture of catalyst of steam conversion of hydrocarbons and regenerated carbon dioxide absorbent including the following stages performed in cyclic succession: A) reaction of steam conversion by passing the gaseous mixture of hydrocarbons and steam through said layer; B) regeneration of carbon dioxide absorbent by passing the regenerating agent through the said layer in direction opposite to direction of delivery of reagents at stage (A). At stage (A), said layer has area at temperature above 700C and area at temperature from 550C to 700C which are so located that reagent are first brought in contact with hotter area of layer and then which area of lower temperature. Regeneration of carbon dioxide absorbent used in production of hydrogen-containing gas is performed by passing the gaseous regenerating agent at content of oxygen no less than 5 vol-% through the said layer. Simultaneously, hydrogen-containing gas at content of hydrogen no less than 40 vol-% is introduced into various areas of the said layer; hydrogen-containing gas goes into exothermic reaction with oxygen of regenerating agent, thus generating the heat for regeneration of absorbent. Proposed method makes it possible to produce hydrogen from hydrocarbon fuel of purity of 98% at content of CO and CO₂ lesser than 100 ppm.

EFFECT: facilitated procedure; enhanced efficiency.

8 dwg, 1 ex