| 摘要 |
Elemental sulfur is recovered from acid gas containing hydrogen sulfide (H2S). Such H2S may be produced from any conventional source such as an amine desulfurization plant. The acid gas and the H2S therein is contacted with oxygen (O2) or the oxygen in air in a stoichiometric amount such that one-third, by weight, of the flowing H2S is oxidized (the H2S is measured and the O2 thereby controlled). Oxidation takes place thus: H2S+3/2 O2->SO2+H2O The sulfur dioxide (SO2) indicated in the equation above is then further reacted in a conventional Claus process sulfur recovery plant with the balance of the H2S. That is, due to the fact that only the said one-third of the H2S is oxidized, there is a two-thirds remainder of the same and it is this two-thirds remainder which is referred to above as the "balance." This balance is converted to elemental sulfur (S) in the following manner: 2H2S+SO2->3S+2H2O
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