Chemistry: electrical and wave energy – Processes and products
Patent
1981-06-22
1983-04-26
Andrews, R. L.
Chemistry: electrical and wave energy
Processes and products
204128, C25B 134
Patent
active
043812309
ABSTRACT:
Methods of membrane regeneration of permselective ion-exchange membranes of a brine electrolysis cell are greatly improved when the cells are fed brine which contains little or no carbon dioxide, carbonate anions or bicarbonate anions during normal electrolysis and when the methods of membrane regeneration are those wherein at least one liquid solution contacts the membrane and the pH of that solution is below that of the pH of the electrolyte in contact with the membrane during normal electrolysis.
REFERENCES:
patent: 3793163 (1974-02-01), Dotson
patent: 3988223 (1976-10-01), Hirozawa
patent: 4038365 (1977-07-01), Patil et al.
patent: 4040919 (1977-08-01), Eng
patent: 4115218 (1978-08-01), Krumpelt
patent: 4116781 (1978-09-01), Dorio et al.
patent: 4155819 (1979-05-01), Carlin
patent: 4176022 (1979-11-01), Darlington
patent: 4202743 (1980-05-01), Oda et al.
patent: 4204921 (1980-05-01), Britton et al.
patent: 4236980 (1980-12-01), Medic et al.
"Effects of Brine Purity on Chlor-Alkali Membrane Cell Performance" Charles J. Molnar and Martin M. Dorio, authors, Presented to The Electrochemical Society Fall Meeting, Oct. 1977, Altanta, GA.
"NAFION.RTM. Membranes Structured for High Efficiency Chlor-Alkali Cells" Charles J. Hora and Daniel E. Maloney, authors, Presented to The Electrochemical Society Fall Meeting, Oct. 1977, Atlanta, GA.
"The Asahi Chemical Membrane Chlor-Alkali Process" Maomi Seko, author, Presented to the Chlorine Institute, Inc. Feb. 9, 1977, New Orleans, LA (p. 5, Table I headings, p. 7, 1st col. and FIG. 10 and Table 3, p. 8).
"The Commercial Use of Membrane Cells in Chlorine/Caustic Plants" Dale R. Pulver, author, Presented at The Chlorine Institute's 21st Plant Manager's Seminar, Feb. 15, 1978, Houston, TX, (pp. 6-1, 6-3, 6-8, 6-10, 6-11, 6-12).
"Sodium Chloride", Reinhold Publishing Corporation, New York, Dale W. Kaufmann, Editor, (1960).
Burney, Jr. Harry S.
Gantt Gary R.
Andrews R. L.
Barrow M. W.
The Dow Chemical Company
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