Composition and process for removing sulfur dioxide from combust

Details Composition and process for removing sulfur dioxide from combust Composition and process for removing sulfur dioxide from combust

1974-08-26

1976-06-08

Padgett, Benjamin R.

Compositions

Oxidative bleachant, oxidant containing, or generative

Free halogen or oxy-halogen acid type

55 73, 252 95, 423242, C01B 1756, B01D 5334

Patent

active

039621120

ABSTRACT:
A process and composition for removing sulfur dioxide from combustion gases particularly those emitted from the burning of high sulfur coal. The gases are treated with a liquid composition comprising 1 to 10 pounds of ClO.sub.2 per hundred pounds of SO.sub.2 to be treated and from 5 to 40 pounds of detergent per pound of ClO.sub.2. The composition is preferably alkaline, and may be injected as an atomized spray into the stack carrying gases, to preferably produce a stack gas of a pH between 7.0 and 7.5. The composition may also include 0.1 to 40 pounds of alkali per pound of ClO.sub.2 and 0.1 to 20 pounds of ammonia per pound of ClO.sub.2. Additionally, 1 to 30 pounds of an organic solvent per pound of ClO.sub.2 may be added.

REFERENCES:
patent: 1649701 (1927-11-01), Jodeck
patent: 2263948 (1941-11-01), Halvorson et al.
patent: 2338268 (1944-01-01), Stossel et al.
patent: 2481240 (1949-09-01), Rapson et al.
patent: 2900219 (1959-08-01), Waibel
patent: 3143402 (1964-08-01), Hervert et al.
patent: 3172725 (1961-01-01), Rugh
patent: 3389971 (1967-06-01), Alliger
patent: 3560389 (1971-02-01), Hunting
patent: 3574562 (1971-04-01), Kawahata
patent: 3728266 (1973-04-01), Komeda et al.

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