Suppression of dioxin production in the incineration of waste ma

Details Suppression of dioxin production in the incineration of waste ma Suppression of dioxin production in the incineration of waste ma

1990-07-16

1992-05-19

Favors, Edward G.

Furnaces

Process

Treating fuel constituent or combustion product

110342, 110346, 423232, F23J 1100, F23J 1500

Patent

active

051137720

ABSTRACT:
Formation of toxic polychlorinated dibenzo-p-dioxins and other chlorinated compounds by catalytic reactions on flyash produced in the process of solid waste incineration is a universal phenomenon. By providing inhibitors which adsorb on the flyash prior to catalytic reaction initiation to suppress catalytic reactions on the flyash, in the postcombustion zone of the incinerator, or by spraying the inhibitors on the solid wastes prior to incineration, has resulted in a decrease in dioxins and other chlorinated compounds on the flyash and in the stack emissions. Introduction of inorganic and organic basic compounds on solid waste or between combustion and precipitation regions of the incinerator also decreases acid gases in the stack emissions.

REFERENCES:
patent: 4648331 (1987-03-01), Thelen
patent: 4681045 (1988-12-01), Dvirka
patent: 4726302 (1988-02-01), Hein et al.
patent: 4793270 (1988-12-01), Karasek et al.
patent: 5021229 (1991-06-01), Gullett

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