PROCESS FOR ABSORPTION OF SULFUR COMPOUNDS FROM FLUIDS USING ETHYLENE DIAMINE DERIVATIVES

摘要

A process for removing SO2 from a fluid containing SO2 by employing as an absorbent for the SO2 an admixture of water and a compound represented by Formula I: Formula I wherein each R1, R2 or R3 is independently hydrogen; an alkyl group; a carboxylic acid group; a hydroxyalkyl group; an aldehyde group; an alkyl group containing a carboxylic ester, a carboxylic acid or salt, ether, aldehyde, ketone or sulfoxide group; wherein at least one R1 or R3 is carboxy methyl group and at least one R1 or R3 is hydrogen, preferably at least one R1 is carboxy methyl and at least one R3 is hydrogen. The absorbent solution preferably can be thermally regenerated by heating to remove SO2. 38,273-F