Gasification of carbonaceous solids

Details Gasification of carbonaceous solids Gasification of carbonaceous solids

C - Chemistry, Metallurgy

10

J

48/37, 48/8

C10J 3/48 (2006.01) C10J 3/12 (2006.01) C10J 3/54 (2006.01)

Patent

CA 1095245

ABSTRACT OF THE DISCLOSURE GASIFICATION OF CARBONACEOUS SOLIDS Disclosed is a process and apparatus for the continuous gasification of carbonaceous solids, such as coal, coke, peat, etc. The process involves the downward flow of a fluidized solid particulate heat-transfer material through a vertical vessel countercurrent to the upward flow of a reactive fluidization gas. Subdivided carbonaceous solids are introduced into a central portion of the vessel and substantially flow downwardly through the vessel and react with the upflowing fluidization gas. The vessel is divided into at least three zones: an upper zone, an intermediate zone, and a lower zone. In the lower zone the fluidization gas is heated by the downflowing solid heat transfer material. In the intermediate zone, the carbonaceous solids react with the fluidization gas forming a product combustible gas and transferring heat to the heat transfer material. In the upper zone, the downflowing heat-transfer material is heated by the upflowing fluidization gas.

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