Regeneration of spent so.sub.2-so.sub.3 sorbents with...

Details Regeneration of spent so.sub.2-so.sub.3 sorbents with... Regeneration of spent so.sub.2-so.sub.3 sorbents with...

B - Operations, Transporting

01

D

23/348

B01D 53/14 (2006.01) B01D 53/34 (2006.01) B01D 53/50 (2006.01)

Patent

CA 1136384

ABSTRACT OF THE DISCLOSURE A process for desulfurizing an effluent waste gas stream comprising adsorbing sulfur oxides by a cerium oxide sorbent, at a temperature of from 300-700°C in the presence of sufficient oxygen to convert any SO2 in said gas to SO3 and thereafter regenerating the spent cerium oxide sorbent, said process charact- erized in that said spent cerium oxide sorbent is regenerated by contacting said spent cerium oxide sorbent with an H2S containing reducing-regenerating gas comprising from 0.5 to 100.0 volume percent H2S with the balance comprising a non-regenerating gas, at a temperature of from 300-700°C at a convenient flow rate.

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