REMOVAL OF CO2 AND/OR H2S AND/OR COS FROM GASES CONTAINING THESE CONSTITUENTS

摘要

In a process for removing CO2 or H2S or both from gases which contain said constituents by washing the gases with an aqueous solution of a scrubbing liquid and subsequently regenerating the scrubbing liquid, the improvement which comprises: using a scrubbing liquid which contains up to 0.8 mole/l of piperazine as an absorption accelerator and at least one solvent of the group of chemical solvents in an amount of 1.5 to 4.5 moles/l, wherein that chemical solvent is selected from the group consisting of aminocarboxylic acids, potassium hydroxide and alkanolamines. The washing process is used for natural gases, coke-oven gases, gases from the gasification of coal and synthesis gases, of any origin.