Patent Number: 6,309,609

Title: Apparatus for treating a gas containing hydrogen sulphide and sulphur dioxide, comprising a step for depleting the recycled solvent in sulphur

Abstract: An apparatus for treating a gas containing hydrogen sulphide and sulphur dioxide comprising a first gas-liquid reactor-contactor (2), means (3) for supplying a gas to be treated and means (5) for supplying an organic solvent, means (25) for recovering sulphur and means (20) for extracting a gaseous effluent containing sulphur in vapour form, the apparatus being characterized in that it comprises a second reactor-contactor (102) connected to the means for extracting the gaseous effluent, means (105) for supplying an organic solvent which is depleted in sulphur connected to the second reactor-contactor, means (120) for recovering a gaseous effluent which has been cleaned of sulphur connected to the second reactor-contactor, means (104) for extracting a liquid phase containing the organic solvent and sulphur connected to the second reactor-contactor, at least one means for depleting at least a portion of the liquid phase in sulphur connected to the means for extracting the liquid phase, comprising at least one means (190) for cooling said phase connected to a means (118) for separating solid sulphur which delivers a solid phase (125) of sulphur at a first end and a liquid phase (121) which is depleted in sulphur at a second end, the second end being connected to means (105) for supplying solvent depleted in sulphur, the apparatus being further characterized in that at least one of the reactor-contactors contains a catalyst.

Inventors: Lecomte; Fabrice (Vincennes, FR), Dezael; Claude (Maisons Laffitte, FR), Viltard; Jean-Charles (Valence, FR)

Assignee: Institut Francais du Petrole

International Classification: B01D 53/48 (20060101); B01D 53/52 (20060101); C01B 17/00 (20060101); C01B 17/05 (20060101); B01D 053/50 (); B01D 053/52 (); B01J 008/00 (); B01J 008/02 ()

Expiration Date: 10/30/2018