Process for removing gaseous sulfur compounds and sulfur...

Details Process for removing gaseous sulfur compounds and sulfur... Process for removing gaseous sulfur compounds and sulfur...

B - Operations, Transporting

01

D

23/348

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

Patent

CA 1289336

Abstract The invention relates to a process for removing sulfur dioxide from the flue gases of a furnace. In a manner deviating from prior known methods, in addition to a sulfur-containing material (4) to be burned and an oxygen-bearing gas (5), a pulverous calcium or magnesium hydroxide (6) is fed, in excess proportion to the sulfur dioxide gas produced in the combustion chamber, into the combus- tion chamber of the furnace (1), and water (9) or steam is sprayed separately into the thus obtained calcium oxide bearing or magne- sium oxide bearing flue gases (8) in a stage (2) separate from the combustion chamber. Alternatively and preferably the pulverous hydroxide (6) can be fed directly into the flue gases which leave the furnace (1), either in the flue gas conduit (7) or in a reactor (2) subsequent to it, where the hydroxide is activated by means of water (9) or steam.

494920

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