Process for the oxidation of hydrogen sulphide dissolved in...

Details Process for the oxidation of hydrogen sulphide dissolved in... Process for the oxidation of hydrogen sulphide dissolved in...

C - Chemistry, Metallurgy

02

F

362/12, 23/84

C02F 1/74 (2006.01) C02F 1/24 (2006.01) C02F 1/72 (2006.01)

Patent

CA 1186484

ABSTRACT OF THE INVENTION Hydrogen sulphide in the waste water from a coal gasification installation is subjected to an oxidising treatment in the presence of the very fine-grain residual coke which, being washed out of the product gas, is sus- pended in the waste water, the residual coke particles thus serving as a catalyst. When using air for the oxidation treatment, with the usual period of treatment, it is possible to achieve virtually quantitative conversion of the hydrogen sulphide to sulphate. If the solid particles are to be removed from the waste water by a flotation step, the flotation operation and the oxidising treatment can be performed simultaneously in a common apparatus.

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