Patent ID: 7708967
Filing Date: 2010-05-04
Classification: B01D,C01B

Abstract:
1. A process for disposal of mercaptans, the process comprising the steps of: (a) contacting a feed gas stream comprising mercaptans with liquid sulphur in a sulphide producing zone at elevated pressure and at a temperature in the range of from 300 to 450° C. to obtain a liquid stream comprising sulphur and sulphide compounds; (b) separating the liquid stream obtained in step (a) into a first liquid phase enriched in liquid sulphur and a second liquid phase enriched in sulphide compounds; (c) passing the second liquid phase to a sulphur dioxide generation zone whereby at least part of the sulphide compounds are combusted at elevated temperature in the presence of an oxygen-containing gas in the sulphur dioxide generation zone using a sulphide burner to which burner an oxygen-containing gas is supplied, whereby at least part of the sulphide compounds is converted to sulphur dioxide to obtain a gas stream comprising sulphur dioxide.