Removal of hydrogen sulfide and organosulfur compounds from a gas feed comprises distributing the dwell time on points between subsequent sections of a scrubbing column to achieve a good conversion

摘要

The dwell time on points between subsequent sections of a scrubbing column is distributed so that a relatively large conversion to hydrogen sulfide (H2S) compared with a local concentration of organic sulfur compounds is achieved. Process for the removal of H2S and organosulfur compounds from a gaseous feed comprises chemically converting a large part of the organosulfur compounds to H2S and scrubbing out the H2S from the feed and the chemical conversion. A physical scrubbing agent is used for scrubbing and a catalytically active additive to the scrubbing agent is used for the chemical conversion. The dwell time on points between subsequent sections of a scrubbing column is distributed so that a relatively large conversion to H2S compared with a local concentration of organic sulfur compounds is achieved. An Independent claim is also included for a scrubbing column having sections with inserts for material exchange and containing dwell time apparatus for chemical conversion between subsequent non-uniform large column sections.