C - Chemistry – Metallurgy – 10 – J
Patent
C - Chemistry, Metallurgy
10
J
48/37
C10J 3/54 (2006.01)
Patent
CA 1085167
Abstract: A process for the conversion of caronaceous materials containing sulphur to an essentially sulphur-free combustible gas by gasification, comprising partially gasifying the carbonaceous material in a first circulating fluid bed by supplying to said zone adjusted flows of the carbonaceous material, finely-divided CaO-containing material and steam, separating soled materials from the flow of gases and solid materials leaving said reaction zone, subjecting an adjusted fraction of the flow of said solid materials to separation of ashes and sulphur purification and then returning the flow to the reaction zone, transferring the rest of the solid materials to a second circulating fluid bed, wherein the solid materials by partial combustion with an ad- justed flow of gases containing molecular oxygen is heated to an overtemperature which is adjusted by controlling the content of oxygen of the gas in such a way that the materials after separation from the reaction gases and recirculation to the first fluid bed covers the heat requirement for the gasification therein. The invention also covers an apparatus for carrying out said process.
247506
Fetherstonhaugh & Co.
Stora Kopparbergs Bergslags Aktiebolag
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