H2S is scrubbed (30) from a gas (32) by N-methyl pyrrolidone to form a scrubbed gas (34) and an HzS-rich NMP solution (36). The latter (36) is passed to a stripping zone (40) where it is stripped of H2S with a stripping gas (11) after first being heated to a stripping temperature by indirect heat exchange (in 26) with a combined stream (24,25) of stripped NMP solution (46) recovered from the stripping zone (40) and hot NMP (10) from a solvent extraction operation. Scrubbed gas (34) is used to strip NMP from hydrocarbons in the solvent extraction operation and is then used as the stripping gas (11) in the stripping zone (40).
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