Method for compressing gases containing hydrogen sulfide

A process for compressing a hydrogen-sulfide-comprising gas stream, the process comprising

• (i) compressing the hydrogen-sulfide-comprising gas stream in a compressor,
• (ii) flushing the compressor with a mixture comprising
• a) 10 to 98% by weight of at least one dialkyl polysulfide,
• b) 1.9 to 80% by weight of at least one dialkyl disulfide, and
• c) 0.1 to 10% by weight of at least one amine,
• wherein a sum of dialkyl polysulfides, dialkyl sulfides and amines totals 100% by weight,
• wherein an entry pressure into the compressor is from 700 mbar to 3000 mbar absolute, and an exit pressure from the compressor is from 1000 to 7000 mbar absolute, with the proviso that the entry pressure is lower than the exit pressure, and
• wherein an entry temperature into the compressor is from 10 to 70° C., and an exit temperature from the compressor is from 15 to 200° C., with the proviso that the entry temperature is lower than the exit temperature.