| 摘要 |
<p>For the simultaneous absorption and oxidation of hydrogen sulfide, gaseous mixtures substantially free of molecular oxygen are scrubbed in a first stage with an aqueous, alkaline scrubbing agent containing pentavalent vanadium as the oxidizing medium. The hydrogen sulfide is absorbed by the scrubbing agent and oxidized to elemental sulfur with reduction of pentavalent vanadium to tetravalent vanadium. The thus-reduced scrubbing agent is then regenerated in a separate second stage in the presence of an amine promoter by reoxidation of the tetravalent vanadium with molecular oxygen, and reused.</p> |
