METHOD OF SOLID FUEL GASIFICATION COMBINED WITH GAS SWEETENING AND GASIFICATION SYSTEM Russian patent published in 2011 - IPC C10J3/00 C10K1/26 C10K1/30 

FIELD: oil and gas production.

SUBSTANCE: invention concerns a gasification method which consists of three stages: the gasification and pyrolysis stage (a pyrolysis and gasification phase, the first stage) in a gasifier furnace 10, coal firing for producing a decarbonated active chemical agent (a coal firing phase, the second stage) in a firing furnace 20, and gasified gas sweetening (a gasified gas sweetening phase, the third stage) in a gas sweetening furnace 30. Because of heat passage by means of a heat-transfer fluid and chemical reaction consistency in the various phases with the chemical agent to be added, in the gasification furnace 10, low or medium temperature (773-1073°K) required for gasification and promoting CO₂ absorption is set independently, while in the gasified gas sweetening furnace 30, high temperature (1073°K or more) required for gas sweetening is set. Also, the invention refers to a solid fuel gasification system.

EFFECT: in the method and system offered in the present invention, function of CO₂ absorption from gas promoted by chemical agent to accelerate the gasification reaction is combined with a function of a resin reforming catalyst in the gasified gas produced by the gasification reaction that makes possible to prepared pure produced gas by high-efficiency gasification.

10 cl, 1 tbl, 9 dwg