Adding acid to ion-exchange membrane cells
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This post was last edited by sunjl1981 on 2013-1-6 at 23:25. Our company is currently experiencing high power consumption in its ion exchange membranes; we are considering adding acid to the brine fed into the cells in order to adjust its pH value. We would like to hear from other professionals regarding their views on adding acid to cell feed brine, as well as the results achieved by their companies in doing so Our company uses DuPont membranes. ， ， -
Our company has never used it before, as we are worried that unstable pH adjustment could affect the performance of the electrolytic cells!
Acid addition to the electrolyzer begins when the current is at a stable full load; depending on the duration of use of the ion exchange membrane, the concentration at the inlet should be less than 0.15 mol/l
Our company uses films from Asahi Glass, and we always add high-purity acid to adjust the pH value
Our company uses DuPont membranes (with a certain membrane pole distance). We use a relatively conservative amount of acid, increasing it gradually; the effect should be better than when no acid is used
Our company uses Asahi Kasei’s ion exchange membranes. We use high-purity acid; without it, the filters in the system get clogged, which results in too high pressure at the anode inlet. When acid is used, many bubbles appear in the sight glass located at the back of the tank, and the pressure drops as well. We gradually increased the amount of acid, reaching a maximum of 400 L/H.