| abstract |
Process for the purification of hydrocarbon-containing gas, in which a first small gas stream (3), which consists essentially of hydrocarbon and carbon dioxide, and a second, larger gas stream (4), which is introduced into a Claus plant (27), are introduced essentially consists of hydrogen sulfide, carbon dioxide and small amounts of mercaptan, characterized in that before the absorption and regeneration system (23) operated at a pressure of the feed gas of 20-80 bar abs, another absorption system (21) is switched, which at the same pressure from 20 to 80 bar abs works with a selective solvent and which roughly desulfurizes the feed gas to 100 - 10,000 ppmV H 2 S, a solvent stream (17) laden with hydrogen sulfide being drawn off from this upstream absorption system (21) and a subsequent regeneration (22 ) is supplied that a third gas stream () from the upstream absorption system (21) 2), the roughly desulfurized raw gas is fed to the absorption and regeneration plant (23), and from this absorption and regeneration plant ... |