Coke desulphurization

Details Coke desulphurization Coke desulphurization

C - Chemistry, Metallurgy

10

L

196/11

C10L 9/08 (2006.01) C10B 39/02 (2006.01) C10L 9/00 (2006.01)

Patent

CA 1126185

Case 3736 TITLE: COKE DESULPHURIZATION Abstract of the Disclosure Coke is desulphurized by sequentially heating the coke to desulphurization temperatures, and maintaining the coke at desulphurization temperatures to effect desulphuriza- tion thereof, the coke reaching a temperature of at least 1000°C (preferably at least 1100°C and, most preferably at least 1200°C) during desulphurization. Cooling and all or a portion of the heating is effected by direct counter- current contact with a gas, with the heat released from the coke during cooling being recuperated by the gas and employed to provide most of the heating to bring the coke to desulphurization temperature. The coke and/or the gas are heated between the cooling and heating steps to maintain the gas at a temperature below that of the coke dur- ing cooling and at a temperature above that of the coke during heating. The gas for the cooling and heating is a recycle gas, recovered from the direct contact heating to the direct contact cooling.

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