Method for treating by-products from flue gas

Details Method for treating by-products from flue gas Method for treating by-products from flue gas

1985-04-02

1987-05-19

Heller, Gregory A.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

423166, 423242, C01F 1146, C01F 100, C01F 540, C01B 1700

Patent

active

046666940

ABSTRACT:
A dry particulate sulfite-containing material produced in a flue gas desulfurization process is oxidized and agglomerated in a fluidized bed reactor, wherein the material is fluidized in an oxygen-containing gas. The oxygen-containing gas which is supplied to the fluidized bed has a temperature below the agglomeration temperature of said particulate material. Due to the exothermic character of the oxidation, the temperature of the fluidized bed is maintained above the agglomeration temperature of the particulate material. Gas with entrained particles leaving the fluidzed bed are cooled during its passing through the freeboard of the fluidized bed reactor, whereby problems due to sticking of said entrained particles are avoided. At least a part of said entrained particles are recycled to the fluidized bed reactor.
A fluidized bed reactor is provided suitable for performing the combined oxidation and agglomeration.

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patent: 4495163 (1985-01-01), Nguyen
patent: 4544542 (1985-10-01), Angevine et al.
patent: 4595576 (1986-06-01), Andreasen et al.

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