Removal of potassium chloride from solvents

Details Removal of potassium chloride from solvents Removal of potassium chloride from solvents

1990-02-09

1991-02-19

Russel, Jeffrey E.

Chemistry of inorganic compounds

Halogen or compound thereof

Binary compound containing metal

423181, 203 14, C01D 314, C07C 5144

Patent

active

049942522

ABSTRACT:
Finely divided potassium chloride is removed from mixtures with polar, aprotic solvents, such as N-methyl-2-pyrrolidinone, by combining the mixture with sufficient water to dissolve a significant portion, but not all of the potassium chloride present, removing the added water by distillation, and subsequently separating the larger crystals of the salt that form by filtration or centrifugation. The amount of water employed is in the same general range as the amount of polar, aprotic solvent present.

REFERENCES:
patent: 3894035 (1975-07-01), Domenico
patent: 3923822 (1975-12-01), Domenico
patent: 4050994 (1977-09-01), Anshus
patent: 4542221 (1985-09-01), Jones
patent: 4713231 (1987-12-01), Campbell et al.
patent: 4746744 (1988-05-01), Wilson et al.
patent: 4793936 (1988-12-01), Lefrancois et al.

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