Stabilized sorbent for flue gas desulfurization

Details Stabilized sorbent for flue gas desulfurization Stabilized sorbent for flue gas desulfurization

B - Operations, Transporting

01

D

23/348

B01D 53/34 (2006.01) B01D 53/02 (2006.01) C01B 17/60 (2006.01)

Patent

CA 1072722

ABSTRACT A cyclic process for removing SOx from a gaseous mixture containing SOx, oxygen and at least 2.0 mol % water vapor comprising conducting a plurality of desulfurization/regeneration cycles, each cycle comprising (i) contacting said gaseous mixture with a solid sorbent contained in a reaction zone at desulfurizing conditions to remove SOx from the gaseous mixture and (ii) subsequently regenerating said sorbent at regeneration conditions in the absence of said gaseous mixture, said sorbent comprising a carrier comprising at least about 70 mol % alumina combined with copper oxide and a stabilizing amount of magnesium oxide, the capacity of said sorbent after more than 600 cycles being at least equal to the initial capacity of said sorbent times the quantity (number of cycles)-0.02. The addition of magnesium oxide to the SOx sorbent leads to long term activity maintenance benefits.

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