Are there any ion membrane units that had been out of production for about two years and have now resumed operation? Please discuss the key points and precautions for pre-production maintenance.
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Are there any ion-exchange membrane units that had been shut down for about two years and have now resumed production? Please discuss the key points and precautions for pre-production maintenance, as well as the measures to address any problems that arise after production resumes Thank you!
It should be the same as starting up a new device: overall leak testing, individual unit testing, and partial integrated testing. It seems the ion membrane needs to be replaced entirely.
It’s been two years since production stopped. Could anyone share some experiences on how to maintain the ion-exchange membranes?
That is, first talk about how your family has protected the ion membrane over these past two years.
1. After the electrolyzer is shut down, the cell is washed; the ion membrane is removed from the electrolyzer and placed in the equilibrium solution tank. The anode and cathode systems were all cleaned with pure water and drained; after changing to the membrane electrode spacing, the cathode was also cleaned with pure water and drained ； 2. The three chelating resin towers have undergone regeneration and pickling, followed by a second water wash; they are now left to stand and wait.
Zaozhuang Zhongke Chemistry Co., Ltd. Our factory was shut down for over two years, from late June 2014 to late November 2016. The ion membrane (DuPont 2030) and electrolyzer (Chlorine Engineering) were treated previously. Production has been resumed for a year now, and at present the cell voltage and electrical efficiency are within normal ranges. To be honest, we’re quite proud; at that time, not even the manufacturers had any data or systematic approaches in this area! !
It’s inconvenient to place it in an alkali solution balance tank; it’s difficult to control the temperature when it’s cold, and even electric heating elements cannot ensure even heating. Over a long period of time, it’s also prone to contamination. After being washed, if the electrolyzer is left exposed to air for a long time, the electrodes will corrode and the coating will peel off. The humidity must be maintained! As for resin! ! Have you considered preserving the temperature inside the tower? What to do when it’s below 0 degrees? ?
I am from Zaozhuang Zhongke Chemical Co., Ltd