Reduction of sulfur dioxide with recycled coal

Details Reduction of sulfur dioxide with recycled coal Reduction of sulfur dioxide with recycled coal

C - Chemistry, Metallurgy

01

B

23/337

C01B 17/04 (2006.01)

Patent

CA 1173217

REDUCTION OF SULFUR DIOXIDE WITH RECYCLED COAL ABSTRACT OF THE DISCLOSURE Disclosed is a process wherein, steam and a SO2-containing off-gas are introduced into a reactor containing a mixture of fresh and recycled coal, with the temperature of the reactor being maintained at a level sufficient to reduce the sulfur dioxide to elemental sulfur. While the amount of recycled coal, as 2 percentage of the total coal fed to the reactor, can vary widely, preferably from 30% to 90% of the coal fed to the reactor is recycled. More preferably, from 50% to 80% of the coal mixture is recycled coal.

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