| 摘要 |
A two-stage process for regenerating sulfuric acid laden activated carbon by contacting at a temperature below about 350 DEG F. the activated carbon with hydrogen sulfide in an amount of at least 3:1 mole ratio of hydrogen sulfide to adsorbed sulfuric acid whereby the sulfuric acid is reduced to elemental sulfur which remains adsorbed on the activated carbon. The sulfur is then removed from the activated carbon in a second stage by contacting with a sulfur-reducing gas, such as hydrogen to produce a sufficient amount of hydrogen sulfide for use in the first step and the remaining sulfur is recovered.
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