Enhancement of fly ash alkalinity with buffers for use in...

Details Enhancement of fly ash alkalinity with buffers for use in... Enhancement of fly ash alkalinity with buffers for use in...

B - Operations, Transporting

01

D

B01D 53/50 (2006.01) B01D 53/14 (2006.01)

Patent

CA 2156785

A method for removing SO2 from a flue gas containing SO2 and fly ash includes channeling the flue gas to a tank. The flue gas is then sprayed with a liquid solution in the tank for creating a slurry in which the fly ash absorbs a quantity of the SO2 from the flue gas. The liquid solution is then buffered with an organic acid having a pH less than 5 for maintaining the slurry at a pH less than 5.

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