Sulfur dioxide removal from gas streams using hydroxyalkyl...

Details Sulfur dioxide removal from gas streams using hydroxyalkyl... Sulfur dioxide removal from gas streams using hydroxyalkyl...

B - Operations, Transporting

01

D

23/350

B01D 53/34 (2006.01) B01D 53/14 (2006.01) B01D 53/50 (2006.01) C01B 17/60 (2006.01) C07D 241/08 (2006.01)

Patent

CA 1303333

ABSTRACT A method of removing SO2 from a gas stream containing the same by absorbing the SO2 in an aqueous solution containing a 4-(2-hydroxyalkyl)-2-piperazinone compound or an alkyl or aryl substituted derivative thereof. These compounds provide an absorbent solutions that are less subject to loss during the regeneration step and yet effectively remove the SO2 from the gas stream without interference from other associated gases.

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