Chlorine dioxide production using mixed hydrochloric and sulfuri

Details Chlorine dioxide production using mixed hydrochloric and sulfuri Chlorine dioxide production using mixed hydrochloric and sulfuri

1981-11-02

1983-07-12

Hearn, Brian E.

Chemistry of inorganic compounds

Halogen or compound thereof

Chlorine dioxide

423486, 423522, 422161, 422200, 422211, C01B 1102, C01B 701, C01B 1774

Patent

active

043930352

ABSTRACT:
A chlorine dioxide generating process is described wherein chlorine formed with the chlorine dioxide is used to form acid reactant for the chlorine dioxide generating process by reaction with sulphur dioxide and water. The substantial evaporation of the water which would otherwise result from the exothermic nature of the reaction is prevented by controlling the temperature of the water during the reaction. In one embodiment, the temperature control is achieved by effecting the reaction in a cooled falling film absorber having integral cooling passages and to which liquid water is fed to form the falling film. In another embodiment, the reaction is effected in a packed tower with a substantial proportion of the product acid being recycled through an external heat exchanger and diluted with water.

REFERENCES:
patent: 3347628 (1967-10-01), Sepall
patent: 4086329 (1978-04-01), Cowley
patent: 4105751 (1978-08-01), Caillol

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