Process for the oxidation of hydrogen sulphide dissolved in the

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

1983-03-18

1984-10-23

Wyse, Thomas

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210763, 210765, 210916, C02F 172

Patent

active

044787251

ABSTRACT:
Hydrogen sulphide in the waste water from a coal gasification installation is subjected to an oxidizing treatment in the presence of the very fine-grain residual coke which, being washed out of the product gas, is suspended 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 oxidizing treatment can be performed simultaneously in a common apparatus.

REFERENCES:
patent: 3186942 (1965-06-01), Benger
patent: 3817862 (1974-06-01), Hoke
patent: 4264451 (1981-03-01), Pope et al.

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