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:
Jun. 10, 2014
Filed:
May. 28, 2010
Walter Bachleitner, Wels, AT;
Christoph Erdmann, Hofheim, DE;
Joachim Rohovec, Baden Bei Wien, AT;
Andreas Bulan, Langenfled, DE;
Mathias Weis, Leverkusen, DE;
Walter Bachleitner, Wels, AT;
Christoph Erdmann, Hofheim, DE;
Joachim Rohovec, Baden Bei Wien, AT;
Andreas Bulan, Langenfled, DE;
Mathias Weis, Leverkusen, DE;
Messer Group GmbH, Sulzbach, DE;
Bayer Material Science AG, Leverkusen, DE;
Abstract
In a process for chlorine-alkali electrolysis, use is made of an oxygen depletion cathode. The process is run with a high excess of oxygen. The oxygen needed for this is provided for a device of the gas separation, for example a VPSA plant or an air fractionation plant. The large quantities of oxygen produced lead to considerable costs of the process. According to the invention, the oxygen-rich atmosphere remaining after passing through the process is fed back into the device for gas separation as input gas. The device the gas separation is therefore operated with an oxygen-rich input gas and therefore produces a larger quantity of oxygen-rich gas, which in turn is fed to the oxygen depletion cathode. As a result of the circulation of the gas, the economy of the overall process is increased considerably.