METHOD OF REMOVING THE CARBON DIOXIDE AND/OR HYDROGEN SULPHIDE AND/OR COS FROM THE GASES CONTAINING THE SAID SUBSTANCES

摘要

An aqueous solution containing from 0.81 to 1.3 moles of piperazine per liter is used as a washing agent for removing impurities such as H2S, CO2 and COS from gases. Piperazine can also be used, in amounts of up to 0.8 mole per liter, together with physical or chemical solvents, to accelerate the absorption of H2S, CO2 and COS. The washing process is used for natural gases, coke-oven gases, gases from the gasification of coal and synthesis gases, of any origin.