| 摘要 |
Processes for enriching acid gases for sulphur plant feeds and for producing a commercially valuable CO2 by-product include a sour gas stream contacting an absorbent in an absorber, and regenerating the absorbent to produce a regenerated absorbent and an acid gas stream. A portion of the acid gas stre am is recycled to produce higher ratios of hydrogen sulphide to carbon dioxide. Multiple absorbers and recycle streams can be used.
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