Process for the removal of SO2 from flue gases

摘要

A process is described for the removal of SO2 from hot flue gases (produced from the combustion of carbon-containing fuels) by means of scrubbing using a solvent having a physical action. After uptake of the SO2, the solvent is regenerated and returned to the scrubbing stage. In order to overcome disadvantages of known solvents, such as hydrolysis and high energy consumption, for example as is the case with dimethylformamide, it is proposed to use a solvent comprising over 50% tetraethylene glycol dimethyl ether for the scrubbing.