Process for reduction of sulfur dioxide emission from combustion

Details Process for reduction of sulfur dioxide emission from combustion Process for reduction of sulfur dioxide emission from combustion

1995-04-26

1997-04-29

Simmons, David A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

42324306, 423199, C01D 502

Patent

active

056246498

ABSTRACT:
A wet flue gas desulfurization process and system are provided for removing sulfur dioxide from flue gases produced by processing operations of the type carried out in utility and industrial plants. In particular, the desulfurization process utilizes an ammonia-based solution having a free ammonia constituent that reacts with sulfur dioxide to generate an ammonium sulfate solution that can be further reacted to produce potassium sulfate, a valuable fertilizer. A second byproduct of this process is then reacted to regenerate free gaseous ammonia, which can then be recovered for subsequent use in the desulfurization of flue gases.

REFERENCES:
patent: 2233841 (1941-03-01), Lepsae
patent: 3927178 (1975-12-01), Jordan et al.
patent: 4554151 (1985-11-01), Worthington et al.
patent: 5362458 (1994-11-01), Saleem et al.
Handbook of Chemistry & Physics, 1973, 54th Edition, p. B65.

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