Process for selective oxidation of hydrogen sulphide
AssigneeShell Oil Company
InventorsRonald Jan Schoonebeek, Sipke Hidde Wadman
Life of this patent
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Abstract
The present invention provides a process for the selective oxidation of hydrogen sulphide in a hydrogen sulphide-containing hydrocarbon and/or hydrogen feed gas to elemental sulphur in a reaction zone containing a Claus catalyst, comprising the steps of: i) reacting in the reaction zone the hydrogen sulphide in the hydrogen sulphide-containing hydrocarbon and/or hydrogen feed gas with sulphur dioxide at a pressure in the range of from 4 to 200 bar (absolute) and a temperature in the range of from 120 and 160° C., such that the elemental sulphur formed is essentially in liquid form; ii) contacting the catalyst with a reducing atmosphere at elevated temperatures.
Claims12
A process for the selective oxidation of hydrogen sulphide in a hydrogen sulphide-containing feed gas, comprising a hydrocarbon or hydrogen or a combination thereof, to elemental sulphur in a reaction zone containing a Claus catalyst, comprising the steps of:
- i) reacting in the reaction zone the hydrogen sulphide in the hydrogen sulphide-containing feed gas with sulphur dioxide at a pressure in the range of from 4 to 200 bar (absolute) and a temperature in the range of from 120 to 160° C., such that the elemental sulphur formed is essentially in liquid form;
- and the Claus catalyst undergoes sulphation to form an anionic oxide of sulphur on the Claus catalyst to thereby provide a sulphated Claus catalyst, and
- ii) contacting the sulphated Claus catalyst with a reducing atmosphere under conditions so as to effectuate the reduction of the anionic oxide of sulphur.
Dependencies are inferred from the claim text.