초록 ▼

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 ab

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.

대표청구항 ▼

In a process for removing CO2, H2S or both as constituents from gases 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 (a) from about 0.05 to 0.8 mole/l of

In a process for removing CO2, H2S or both as constituents from gases 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 (a) from about 0.05 to 0.8 mole/l of piperazine as an absorption accelerator and (b) from about 1.5 to 4.5 moles/l of methyldiethanolamine, and carrying out the washing of the gases with the scrubbing liquid at temperatures of from about 40°C. upward.