Chemistry of inorganic compounds – Halogen or compound thereof – Hydrogen halide
Patent
1979-08-06
1981-05-19
Thomas, Earl C.
Chemistry of inorganic compounds
Halogen or compound thereof
Hydrogen halide
423341, 423483, 423499, 423551, C01B 703
Patent
active
042684927
ABSTRACT:
Alkali metal fluosilicate is used as an intermediate reactant in a process for the production of hydrochloric acid and an alkali metal sulfate from sulfuric acid and an alkali metal chloride. The process includes the reaction of alkali metal fluosilicate with sulfuric acid to produce alkali metal sulfate and H.sub.2 SiF.sub.6, the latter being reacted with alkali metal chloride to produce HCl and alkali metal fluosilicate. The resulting hydrochloric acid may be converted to anhydrous hydrogen chloride. A continuous process for the production of hydrochloric acid and of alkali metal sulfate such as potassium sulfate from an alkali metal fluosilicate material is also disclosed.
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Drechsel Erhart K.
Sardisco John B.
Pennzoil Company
Thomas Earl C.
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