Destruction process
AssigneeTioxide Group Services Limited
InventorsJohn R. Moody, Allan P. George, Robert H. Peeling, Stephen M. Jones
Life of this patent
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Abstract
Chemical waste is burned in oxygen using an electric plasma flame to heat a stream of gas which contains at least 70% by weight oxygen. Liquid waste in fine droplet form is introduced into the gas stream via a two-fluid atomizer using a carrier gas also preferably oxygen. The total amount of oxygen present is at least 30% more than required for complete combustion of the liquid waste. The reaction mixture is maintained at a temperature of at least 1450.degree. C. for a time of at least 2 milliseconds prior to cooling rapidly of the reaction products to a temperature below 300.degree. C.
Claims12
A process for the destruction of chemical waste comprising the steps of forming an electric plasma flame by heating a stream of gas by means of an electric discharge, said gas comprising at least 70% by weigh oxygen, introducing the chemical waste in liquid form by means of a two-fluid atomiser into the electric plasma flame, introducing an amount of oxygen into the electric plasma flame to form a reaction mixture of oxygen and chemical waste, the amount of oxygen being sufficient to ensure that the total amount of oxygen in the reaction mixture is at least 30% more than required for complete combustion of the chemical waste, maintaining the reaction mixture at a temperature of at least 1450.degree. for at least 2 milliseconds and subsequently cooling rapidly the reaction mixture to below 300.degree. C.
Dependencies are inferred from the claim text.