Patent ID: 6210454
Filing Date: 2001-04-03
Classification: B01D,C01B,Y02P

Abstract:
An apparatus for treating a gas containing hydrogen sulphide and sulphur dioxide, comprising a liquid-gas reactor-contactor (2) having a lower portion and an upper portion, means (3) for supplying gas to be treated in communication with said reactor-contactor (2), means for supplying an organic solvent containing a soluble catalyst in communication with said reactor-contactor (2), means (25) for recovering sulphur from the lower portion of said reactor-contactor, means (20) in communication with said reactor-contactor (2) for withdrawing a gaseous stream containing sulphur in vapour form, at least one means (7) for contacting and cooling the gaseous effluent and for providing a three-phase effluent, said at least one means (7) having an inlet in communication with said means (20), means (6, 13) for recycling a cooling solvent, said means (6, 13) being in communication with said inlet of means (7), said at least one means (7) having an outlet (10), means (30) in communication with said outlet (10) for separating said three-phase effluent withdrawn from the at least one contacting and cooling means, so as to separate purified gas from sulphur, said means (30) comprising means (17) for evacuating purified gas, means (15) for extracting sulphur and means (14) for recovering solvent, said means (14) being in communication with the means (6,13) for recycling the cooling solvent, and conduit for effecting said communications, and wherein the means (15) for extracting sulphur are connected to the lower portion of the reactor-contactor.