Patent ID: 6368566
Filing Date: 2002-04-09
Classification: B01D,F23G,F23J

Abstract:
A method of treating a flue gas, comprising the steps of:(a) obtaining from a combustion of organic substances and synthetic materials a flue gas containing carbon monoxide, nitrogen oxides, hydrocarbons and dioxins; (b) passing the flue gas obtained in step (a) through a flue gas pipe and in a catalytic reaction zone containing catalysts at least for removal of the nitrogen oxides, removing harmful components from said flue gas including carbon monoxide, nitrogen oxides and dioxins, to produce a flue gas at a temperature above 400Â° C. susceptible to de novo synthesis of dioxins on cooling; (c) then passing the flue gas at said temperature above 400Â° C. through a previously cooled regenerative heat exchanger constituting a dioxin converter and disposed along said pipe downstream of said reaction zone to cool the flue gas to a temperature below 400Â° C. without de novo synthesis of dioxin; and (d) releasing the flue gas cooled in step (c) into the environment.