| 摘要 |
H<SUB>2</SUB>S-containing gases, particularly such gases at elevated pressure, are treated to remove H<SUB>2</SUB>S by reaction in a liquid medium with SO<SUB>2</SUB>, the SO<SUB>2 </SUB>being present in stoichiometric excess with respect to the H<SUB>2</SUB>S. The SO<SUB>2</SUB> is produced by combustion of sulfur, preferably sulfur produced in the reaction between H<SUB>2</SUB>S and SO<SUB>2</SUB>, preferably with oxygen. The process produces a treated gas that is substantially free of both H<SUB>2</SUB>S and SO<SUB>2</SUB>. An acid-gas absorber/stripper system or other system typically found in such processes to raise or concentrate the H<SUB>2</SUB>S level in the gas to be treated, is not needed in operations according to the invention.
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