METHOD OF CONTINUOUS REMOVAL OF HYDROGEN SULPHIDE FROM GAS FLOW Russian patent published in 2014 - IPC B01D53/14 B01D53/52 B01D53/78 B01D53/86 B01D53/96 C01B17/00 

FIELD: chemistry.

SUBSTANCE: method of continuous removal of hydrogen sulphide from a gas flow includes a contact of an initial gaseous raw material, containing hydrogen sulphide with a catalyst, representing a chelated metal, in an absorber, operating under pressure P1, higher than 100 ft/in², with obtaining the first gas flow, which does not contain hydrogen sulphide, and the second flow, containing elemental sulphur and a solution of the chelated metal, removal of the first flow, provision of an oxidation apparatus, operating under pressure P2, where P2>P1+5 ft/in², supply of a part of the second flow into the oxidation apparatus, introduction of an oxygen-containing compressed air flow into the oxidation apparatus in such a way as to realise oxygen diffusion and its contact with the said second flow, and separation of elemental sulphur from the catalyst solution based on the chelated metal in the oxidation apparatus and removal of sulphur from the redox process.

EFFECT: efficient removal of hydrogen sulphide from the gas flows by the redox method under high pressure.

5 cl, 1 dwg