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. 12, 1992
Filed:
Jun. 15, 1990
Yu-Min Tsou, Lake Jackson, TX (US);
Roy L Hicks, Lake Jackson, TX (US);
Harry S Burney, Jr, Richwood, TX (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
Methods are disclosed to control reverse current flow in stacks of membrane electrolytic cells during off-line periods. One method includes the introduction of a stripping gas flow to the anolyte solution of the cells during an interruption of normal positive current flow. In another embodiment, reverse current flow is controlled by introducing at least one soluble reducing agent to the anolyte solution during an interruption of normal positive current flow. Also disclosed is a porous sparging apparatus useful in introducing a stripping gas flow to a stack of membrane electrolytic cells.