Gaseous generator system for preparing chlorine dioxide

Details Gaseous generator system for preparing chlorine dioxide Gaseous generator system for preparing chlorine dioxide

1989-05-02

1991-04-09

Lewis, Michael L.

Chemistry of inorganic compounds

Halogen or compound thereof

Chlorine dioxide

C01B 1102

Patent

active

050063260

ABSTRACT:
Provided is a process for preparing a gaseous stream of chlorine dioxide. The process comprises first providing an aqueous stream of chlorine dioxide. The chlorine dioxide stream can be provided, for example, by reacting an alkali metal chlorite such as sodium chlorite with an alkali metal hypochlorite such as sodium hypochlorite and an inorganic acid such as hydrochloric acid, or by reacting chlorine gas and an alkali metal chlorite such as sodium chlorite. The resulting aqueous stream is then contacted in countercurrent fashion with a stream of inert gas or air, resulting in chlorine dioxide being stripped from the aqueous stream. A chlorine dioxide containing gaseous stream is then recovered, which is suitable for further use. The process thereby safely and efficiently generates a gaseous stream of chlorine dioxide for subsequent use.

REFERENCES:
patent: 3123521 (1964-03-01), Wentworth et al.
Chemical Abstracts, 90:154270h, "Aqueous Chlorine Dioxide Solutions", Lehmann, W., 1/04/79.

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