Desulphurizing char

Details Desulphurizing char Desulphurizing char

C - Chemistry, Metallurgy

10

L

196/4.5

C10L 9/02 (2006.01)

Patent

CA 1056751

ABSTRACT Char, especially coal char, is desulphurized by first washing the char with an acid. e.g. an aquoous mineral acid, to react with and leach out inorganic compounds in the char, whereafter the acid-washed char is treated with a gas comprising hydrogen. The gas may contain sulphur-bearing gases without adverse effects on the desulphurization of the acid-washed char, so that it is feasible repeatedly to recycle the gas. - 1 -

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