Regenerable flue gas desulfurization system

Details Regenerable flue gas desulfurization system Regenerable flue gas desulfurization system

1991-11-12

1993-11-30

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

42324309, C01B 1700

Patent

active

052662870

ABSTRACT:
A regenerable flue gas desulfurization system whose end product is preferably a commercial quality gypsum (such as for use in wallboard or the like) or other product easily landfilled. Accordingly, sulfur containing flue gas is passed through an absorber where it is sprayed with a solution so as to initiate certain chemical reactions thereby stripping it of sulfur. Any alkali in this sulfur-containing solution is recovered and returned to the absorber with the remainder of this solution being oxidized in an oxidation/recirculation tank. The slurry from this tank may be recycled to a pre-absorber for chlorine removal if desired, otherwise, a portion of this slurry is sent for the recovery of gypsum.

REFERENCES:
patent: 2080779 (1937-05-01), Lessing
patent: 3888968 (1975-06-01), Atsukawa et al.
patent: 3903243 (1975-09-01), Atsukawa et al.

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