Method of reducing cell liquor header corrosion
AssigneePPG Industries, Inc.
InventorsHugh Cunningham, Carl W. Raetzsch
Life of this patent
Estimating the term…
Abstract
Disclosed is a method of conducting electrolysis where a reagent is fed to a plurality of individual electrolytic cells electrically in series, an electrical current is passed through the cells, and an electrically conductive effluent is recovered from each of the individual cells. The electrically conductive effluent is discharged from each of the individual cells through individual metal outlets corresponding to each cell and collected in a common trough. According to the disclosed method, the electrically conductive effluent in the trough is maintained anodic with respect to all of the metal outlets discharging into the trough.
Claims6
In a method of conducting electrolysis comprising feeding alkali metal chloride brine to a plurality of individual electrolytic cells electrically in series, passing electrical current through said cells, recovering electrolyte effluent from each of said individual cells through individual metal outlets, and collecting the electrolyte effluent from a plurality of said cells in a common trough vertically disposed beneath said individual metal outlets, the improvement which comprises maintaining an electrode in contact with the electrolyte effluent in said trough whereby to maintain said trough and said electrolyte anodic with respect to all of said metal outlets.
In a method of conducting electrolysis in a bipolar electrolyzer having a plurality of individual electrolytic cells mechanically and electrically in series, one of said cells being an anodic end cell, each of said cells having a metallic effluent outlet and a single trough vertically disposed beneath said metal effluent outlets, which method comprises the steps of feeding alkali metal chloride brine to each of said cells, passing an electrical current through said electrolyzer, withdrawing electrolyte effluent through said metal effluent outlets from each of said cells, and collecting said electrolyte effluent from said cell in the single trough, the improvement comprising maintaining an electrode in contact with the electrolyte effluent in said trough whereby to maintain said trough and said electrolyte anodic with respect to said electrolyzer.
Dependencies are inferred from the claim text.