Transport gasifier

Details Transport gasifier Transport gasifier

C - Chemistry, Metallurgy

10

J

C10J 3/46 (2006.01) C10J 3/48 (2006.01) C10J 3/54 (2006.01) C10J 3/56 (2006.01)

Patent

CA 2127394

Abstract of the Disclosure A transport reactor useful for the gasification of carbonaceous substrates and a gasification process are disclosed. The transport gasifier has a combustion zone for burning recirculated char particles with a substoichiometric oxygen supply, a feed injection zone for mixing a carbonaceous feed such as coal with the substoichiometric combustion products, a riser in which the coal is generally adiabatically devolatilized and gasified, a separation zone to disengage entrained particles from riser effluent, a solids holdup zone to receive the particles, and a transfer line for recirculating the particles from the holdup zone to the combustion zone. By introducing a coal feed into a gasification reaction zone downstream of a substoichiometric combustion reaction zone, volatile hydrocarbons contained in the coal can be conserved to increase the heating value of the coal gas produced. Also disclosed is a transport combustor for burning spent solids from the transport gasifier.

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