Scrubbing system yielding high concentration of hydrogen sulfide

摘要: In a system for the separation of sour gases especially hydrogen sulfide and carbon dioxide from raw gaseous mixture e.g., hydrogen-containing in order to form purified mixture, comprising scrubbing first stage with physical liquid methanol having higher absorbability than dioxide, withdrawing stream loaded regenerating (a) phase containing sulfide, (b) regenerated liquid, improvement said second capable absorbing additional H2 S, CO2 -depleted an S enrichment column; subjecting resultant stage, preferably rectification, bottoms overhead rich irrespective whether has very low concentration.