METHOD OF PRODUCING POTASSIUM SULPHATE FROM POTASSIUM CHLORIDE AND SULFURIC ACID Russian patent published in 2019 - IPC C01B7/03 C01D5/02

Abstract RU 2708204 C1

FIELD: chemistry.

SUBSTANCE: invention relates to inorganic chemistry. To obtain potassium sulphate and hydrochloric acid, potassium chloride is mixed with water to obtain a suspension which is mixed with recycled sulfuric acid to obtain an acidic mixture K⁺, Cl^-, SO₄^2-. Mixture is treated during crystallization to obtain crystals of potassium sulphate and a vapor phase of hydrochloric acid / water. Hydrochloric acid is separated from the vapor phase of hydrochloric acid / water to obtain a solution of hydrochloric acid.

EFFECT: simple method of production, high efficiency of extracting hydrochloric acid with simultaneous crystallization of potassium sulphate.

10 cl, 6 dwg

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RU 2 708 204 C1

Authors

Bessenet, Sebastien

Le Flammec, Didier

Dates

2019-12-04—Published

2017-09-06—Filed