Process for production of low btu gas

Details Process for production of low btu gas Process for production of low btu gas

C - Chemistry, Metallurgy

10

J

48/23

C10J 3/00 (2006.01) C10J 3/57 (2006.01)

Patent

CA 1060652

PROCESS FOR PRODUCTION OF LOW BTU GAS ABSTRACT OF THE DISCLOSURE A process for partial oxidation and complete gasification of a carbonaceous material to produce a combustible gas containing a substantial proportion of carbon monoxide, by introducing the carbonaceous material and air as a preferred source of oxygen into a molten salt containing an alkali metal carbonate and preferably also an alkali metal sulfide, the system being operated preferably above atmospheric pressure, up to about 20 atmospheres. The air is employed in a proportion to provide less than about 60% of the amount of oxygen stoichiometrically required for complete oxida- tion of the carbonaceous material. Sulfur and ash introduced with the fuel are retained in the molten salt. The gaseous effluent, containing a weight ratio of carbon monoxide to carbon dioxide substantially greater than 1, is a low BTU gas. This gas can be reacted or combusted outside the molten salt in a second reaction zone, such as a conventional boiler, to recover the heat value of such gaseous effluent.

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