Chemistry of inorganic compounds – Sulfur or compound thereof – Oxygen containing
Patent
1981-02-03
1983-02-01
Straub, Gary P.
Chemistry of inorganic compounds
Sulfur or compound thereof
Oxygen containing
423181, 423530, 423531, 423552, C01D 1506, C22B 2610, C01B 1774
Patent
active
043715125
ABSTRACT:
Alkali metal sulfates are produced from an aqueous solution containing alkali metal hydrogen sulfate which comprises contacting the aqueous solution of alkali metal hydrogen sulfate with a hydrophilic solvent, the hydrophilic solvent being effective to extract at least a portion of the sulfuric acid formed as the alkali metal hydrogen sulfate is converted to alkali metal sulfate in the solution, together with at least a portion of the water present; permitting the alkali metal sulfate solid to crystallize; and recovering the solid alkali metal sulfate product. The hydrophilic solvent may then be extracted and separated from the sulfuric acid with a hydrophobic solvent and both solvents can be recovered and recycled.
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Drechsel Erhart K.
Sardisco John B.
Pennzoil Company
Straub Gary P.
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