The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 1981
Filed:
Aug. 06, 1979
John B Sardisco, Shreveport, LA (US);
Erhart K Drechsel, Houston, TX (US);
Pennzoil Company, Houston, TX (US);
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.