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Reductive Pyrolysis for the Destruction of Chloromethane: A Reaction Pathway Model Based on Thermodynamic and Thermokinetic Considerations

by Varadarajan Ravindran,
Massoud Pirbazari,
Badri N. Badriyha,
Sidney W. Benson,



Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water

Abstract:

Among various thermal technologies available for the destruction chlorinated hydrocarbons, incineration, catalytic hydrogenation, and pyrolysis are important. Pyrolysis employed under reductive conditions constituted by methane or hydro gen can have certain inherent advantages over other incineration and catalytic hydrogenation processes. This paper discusses the application of a reductive pyrolysis technology for the ultimate destruction of chlorinated hydrocarbons ex emplified by chloromethane. The results of continuous flow reactor studies show that 100% destruction efficiency is achievable for chioromethane using a reactor residence time of less than 2 seconds. The reaction products essentially consist of non-halogenated organics and hydrogen chloride. A destruction pathway model is proposed based on thermodynamic and thermokinetic considerations. This model provides the means for predicting possible reaction products.

Subject Headings: Heat treatment | Non-renewable energy | Hydrogen | Hydrocarbons | Chlorine | Water treatment | Thermodynamics

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