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:
Feb. 21, 1978
Filed:
Feb. 22, 1977
Applicant:
Inventors:
W Howard Rapson, Scarborough, CA;
Maurice C Fredette, Mississauga, CA;
Norman W Meyers, Islington, CA;
Assignee:
Erco Industries Limited, Islington, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ; C01D / ; C01B / ; C01B / ;
U.S. Cl.
CPC ...
423478 ; 423481 ; 423499 ; 423500 ; 423507 ; 423596 ; 4236 / ;
Abstract
Chlorine dioxide is produced in a continuous process by reaction of sodium chlorate and hydrochloric acid. The reaction medium is maintained at its boiling point under subatmospheric pressure and the resulting steam is used to dilute the chlorine dioxide and chlorine and remove the same from the reaction zone. Sodium chloride is deposited from the reaction medium in the reaction zone. The mole ratio of chlorate to chloride in the reaction medium, and the temperature of the reaction medium are controlled within narrow limits to provide high efficiency of production of chlorine dioxide.