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. 30, 1995
Filed:
Apr. 26, 1994
Applicant:
Inventor:
Johan Wanngard, Sundsvall, SE;
Assignee:
Eka Nobel AB, Bohus, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25B / ; C25B / ; C25B / ;
U.S. Cl.
CPC ...
204 95 ; 204 94 ; 204 86 ; 204 98 ; 204103 ; 204128 ; 423478 ;
Abstract
The invention relates to a process for electrolytic production of alkali metal chlorate where the demand of pH-adjusting chemicals is largely covered by integrated production of acid and alkali metal hydroxide. The process consists in electrolyzing a partial flow of chlorate electrolyte produced, in a cell provided with a separator, for producing a catholyte containing alkali metal hydroxide and an anolyte containing hydrochloric acid. The catholyte and the anolyte are used in alkalization and acidification in the chlorate process, thus significantly reducing the admission of impurities via externally produced chemicals.