diaphragm electrolyzer
Thread Content
This post was last edited by sunjl1981 on 2013-1-6 at 23:54. After a new diaphragm electrolyzer is put into operation, the current rises to 30KA, yet the concentration of the electrolyte is less than 40g/l. Even after adding asbestos slurry and calcium solution, the concentration does not increase – what should be done in such a situation? What are the potential hazards? # ， ， &
The flow rate in the newly grooved tank is very high; adding asbestos slurry and calcium solution isn’t very effective. Asbestos will adhere to the surface of the anode, thereby increasing the tank voltage. The solutions are: either replace the tank, or lower the liquid level to its lowest point for one day, then quickly raise it to its highest point for about seven days before lowering it again to the lowest level. The purpose of lowering the liquid level is to allow full expansion, while raising it to the highest point serves to compress the diaphragm. I have used this method before, and it worked quite well. However, it’s necessary to identify the cause of the high flow rate and take appropriate measures to address the problem at its root. As for the high flow rate, I believe it is caused by the following factors: 1) the ratio of asbestos used and the caustic treatment； 2 Control of vacuum rate during adsorption ； 3 Quality of asbestos fluff ； 4. Viscosity of the bottom slurry and tank cleaning time ； 5. Ambient temperature
Currently, the chlor-alkali industry faces such problems, and discussions remain general; what is needed are specific, effective, and actionable solutions.