| 摘要 |
A plant includes a vacuum stripper ( 118 ) that receives a lean hydrogen sulfide-containing physical solvent ( 32 ) and in which substantially hydrogen sulfide-free stripping gas ( 51,52 ) is provided by at least one of a high-pressure flash vessel ( 110 ) and a medium pressure flash vessel ( 112 ). Contemplated configurations advantageously extend the range of use for physical solvents to treat sour gas comprising carbon dioxide and hydrogen sulfide, and can be used to meet most pipeline specification of 4 ppm hydrogen sulfide.
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