Method for destroying organohalogen compounds

Details Method for destroying organohalogen compounds Method for destroying organohalogen compounds

1996-06-05

1999-11-02

Langel, Wayne

Hazardous or toxic waste destruction or containment

Containment

Solidification, vitrification, or cementation

588248, 423240R, 423240S, 4232451, B01D 5370

Patent

active

059774274

ABSTRACT:
A process is provided for the destruction of organohalogen compounds, such as methyl chloride, chloroform, carbon tetrachloride, etc., by mixing the organohalogen compounds with a heated carrier gas, such as nitrogen, argon or air, and either steam or water to form a mixture; supplying the mixture to a catalyst, such as titanium oxide/tungsten oxide, to decompose the organohalogen compounds into halogens and hydrogen halides, such as chlorine, hydrochloric acid, fluorine and hydrofluoric acid; conducting the halogen and hydrogen halide contaminated gas through a bent path, created by a baffle that prevents the entry of mist or droplets into the catalyst chamber, into a cooling section where the halogen and hydrogen halide contaminated gas is sprayed with water to cool the gas to a temperature low enough to prevent the formation of dioxines. An alkaline agent, such as sodium hydroxide, can be added to the cooling water to neutralize the halides and hydrogen halides.

REFERENCES:
patent: 3453073 (1969-07-01), Sims
patent: 4983366 (1991-01-01), Deller et al.
patent: 5126117 (1992-06-01), Schumacher et al.
patent: 5151263 (1992-09-01), Okazaki et al.
patent: 5206003 (1993-04-01), Imoto et al.

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