Selective H2S Removal with SulFerox

Presented at 26 September 1991 Conference byD.F. Bowman, Shell International Petroleum Maatschappij
This paper gives an update on the Shell SulFerox Process, a recently commercialised desulphurization process which can be tailored to fit a variety of applications in gas treating. Based on iron redox chemistry, it has features which make it very attractive for selective removal of hydrogen sulphide down to very low levels, particularly for gases containing large amounts of carbon dioxide. For sulphur capacities of 50-100 kg/day and higher, the relatively low operating cost gives it an advantage over fixed-bed or throw-away processes, while for throughputs up to 15 ton sulphur/day, the low capital cost, high turndown capability and easy startup and shutdown makes it an attractive alternative to amine/Claus based processes.
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