Chemistry of inorganic compounds – Sulfur or compound thereof – Oxygen containing
Patent
1984-04-19
1986-05-13
Straub, Gary P.
Chemistry of inorganic compounds
Sulfur or compound thereof
Oxygen containing
423482, 423520, C01D 1506, C01B 701
Patent
active
045885737
ABSTRACT:
Potassium chloride and sulfuric acid are reacted in a recycled aqueous solution in the stoichiometric ratio required for potassium sulfate production. Hydrogen chloride produced by the reaction of the potassium chloride and sulfuric acid is evaporated in admixture with water or in anhdrous form. The resulting solution is cooled to crystallize a potassium sulfate salt, preferably potassium bisulfate. The potassium sulfate salt is separated from the mother liquor and the mother liquor is recycled to the reaction step. The potassium sulfate salt is dissolved in an aqueous solution and sequentially decomposed to produce potassium sulfate and a mother liquor rich in sulfuric acid. The mother liquor rich in sulfuric acid is concentrated and recycled to the reaction step.
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Magdics Alex
Stain Donald B.
Worthington Ralph E.
Prodeco, Inc.
Straub Gary P.
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