Method for removing sulfur oxides from combusting gases in wet,

Details Method for removing sulfur oxides from combusting gases in wet, Method for removing sulfur oxides from combusting gases in wet,

1988-12-06

1991-02-19

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

423243, 423244, C01B 1700, B01J 800

Patent

active

049942468

ABSTRACT:
A method is provided for improving the reliability, SO.sub.2 removal and thiosulfate utilization in a wet lime/limestone flue gas desulfurization process by contacting the combustion gases in the presence of the wet lime or limestone with thiosulfate and an organic polyacid chelating agent.

REFERENCES:
patent: 3644087 (1972-02-01), Urban
patent: 4044101 (1977-08-01), Hisamatsu et al.
patent: 4061743 (1977-12-01), Senyo et al.
Moser, et al. "Control & Reduction of Gypsum Scale in Wet Lime/Limestone FGD Systems by Addition of Thiosulfate: Summary of Field Experiences", Abstract.
Rochelle, G. T. et al., "Thiosulfate Additives for Lime/Limestone Scrubbing", Abstract, 10th Symp. on Flue Gas Desulfurization, Atlanta, Ga., (11/86).
Rochelle, G. T. et al., "Thiosulfate as an Oxidation Inhibitor in Flue Gas Desulfurization Processes: A Review of R & D Results", Abstract, 9th Symp. on FGD (May 1985).

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