Hazardous or toxic waste destruction or containment – Containment – Solidification – vitrification – or cementation
Patent
1997-03-04
1999-03-02
Straub, Gary P.
Hazardous or toxic waste destruction or containment
Containment
Solidification, vitrification, or cementation
423240R, 423240S, 588206, B01D 5338, A62D 300, C01B 700
Patent
active
058773916
ABSTRACT:
A method for treating a gas flow containing organohalogen compounds including the steps of contacting the gas flow with a catalyst at a temperature below 500.degree. C. in the presence of an effective amount of steam, wherein the catalyst contains titania, tungsten oxide, and silica, the Ti and W are present in the range of 20-95 mol % Ti and 5-80 mol % W based on Ti and W, and the amount of silica is in the range of 0.5-15% by weight silica to 100% by weight titania. Accordingly, the organohalogen compound can be decomposed effectively to carbon monoxide, carbon dioxide, and hydrogen halide.
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Arato Toshiaki
Azuhata Shigeru
Ikeda Shinzo
Kanno Shuichi
Kato Akira
Hitachi , Ltd.
Nave Eileen E.
Straub Gary P.
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