Process of treating potassium chloride brine by evaporation and

Details Process of treating potassium chloride brine by evaporation and Process of treating potassium chloride brine by evaporation and

1980-05-22

1981-06-30

Yudkoff, Norman

Concentrating evaporators

Processes

Involving waste liquid

159 17VS, 159 45, 23302R, 23303, 423184, B01D 126

Patent

active

042761174

ABSTRACT:
Disclosed is an improved method of producing potassium chloride by concentrating a brine thereof with respect to potassium chloride by multiple stage evaporation conducted at progressively higher temperatures, thereby precipitating other salts and thereafter cooling the brine in multiple stage crystallizers operated at progressively lower temperatures, thereby precipitating potassium chloride crystals. The improvement comprises cooling the brine in hotter crystallizer utilizing streams to or between cooler evaporators whereby in addition heat is provided to the evaporator stream.

REFERENCES:
patent: 1944548 (1934-01-01), Ebner
patent: 2448191 (1948-08-01), Pike
patent: 3202487 (1965-08-01), Domning
patent: 3365278 (1968-01-01), Kelly et al.
patent: 3366419 (1968-01-01), Pasternak et al.
patent: 3433603 (1969-03-01), Jeffery
patent: 3704101 (1972-11-01), Kelly
patent: 3918916 (1975-11-01), Garrett

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