Process for drying calcium chloride generated in high chloride f

Details Process for drying calcium chloride generated in high chloride f Process for drying calcium chloride generated in high chloride f

1980-11-17

1982-03-30

Thomas, Earl C.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

423497, 159 4A, C01B 1700, C01F 526, C01F 1120

Patent

active

043223931

ABSTRACT:
Some flue gas desulfurization processes applied to fuels containing high chloride concentrations are utilizing, or plan to utilize, by-product gypsum from the process stream. The utilization of such a process results in a calcium chloride buildup in the flue gas desulfurization system from fuels or water resource containing significant chlorides which interferes with the absorption and utilization of the lime or limestone reagent.
In this invention, a method is used to convert the calcium chloride to a dry material by utilizing flue gas at elevated temperatures, normally found before an air preheater on steam generators used to produce power or any other conventional large size steam boilers. The monohydrate is produced at temperatures above 350.degree. F. By applying this drying process with a power plant system, energy consumed for this drying operation is very efficient.

REFERENCES:
patent: 1958034 (1934-05-01), Collings
patent: 3386798 (1968-06-01), Bevans et al.
patent: 3826816 (1974-07-01), McCormick
patent: 3929968 (1975-12-01), Taub
patent: 4136998 (1979-01-01), Bussier et al.

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