Process for controlling acid gas emissions in power plant flue g

Details Process for controlling acid gas emissions in power plant flue g Process for controlling acid gas emissions in power plant flue g

1990-09-17

1991-10-22

Favors, Edward G.

Furnaces

Process

Treating fuel constituent or combustion product

110344, 423235, 423239, 423244, F23J 1100, F23J 1500

Patent

active

050585142

ABSTRACT:
An in-furnace sorbent slurry injection process for the simultaneous control of SO.sub.2 and NO.sub.x from power plant flue gases is described. An aqueous slurry of limestone or dolomite-doped limestone and a nitrogenous progenitor compound is injected into the furnace at temperatures ranging between 900.degree. C. and 1350.degree. C. Under optimized operating conditions, with urea selected as the nitrogenous progenitor, about 80% of the SO.sub.2 and 90% of the NO.sub.x are simultaneously removed.

REFERENCES:
patent: 4325924 (1982-04-01), Arand et al.
patent: 4555996 (1985-12-01), Torbov et al.
patent: 4851201 (1989-07-01), Heap et al.

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