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:
Oct. 05, 1976
Filed:
Jun. 17, 1974
Applicant:
Inventors:
Rolf Schafer, Krefeld-uerdingen, DT;
Hans Schifferdecker, Duisburg, DT;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
423240 ; 423234 ; 423473 ;
Abstract
In a process for the dechlorination of gas mixtures containing carbon dioxide and chlorine, wherein in several absorption stages the chlorine is converted with stoichiometric alkali metal hydroxide solution into a carbonate-free alkali metal chloride-alkali metal hypochlorite solution and wherein the required stoichiometric amount of alkali metal hydroxide is introduced countercurrent to the gas stream via the last absorption stage, the improvement which comprises operating the last absorption stage in such a manner that due to free alkali metal hydroxide no alkali metal hydrogen-carbonate is present in said stage.