Sealing issues in chlor-alkali electrolyzers
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How is sealing achieved in chlor-alkali electrolyzers? ? What materials are gaskets generally made of? ? Is the leakage problem a major issue in the chlor-alkali industry? ? Please, someone knowledgeable can answer this
There is a groove frame gasket between the two unit grooves (made of EPDM rubber with PTFE edging). ), and sealing is achieved through extrusion by a hydraulic press. The leakage problem must be taken seriously, especially at the tank frame, the nuts at the cathode outlet of the electrolytic cell, and the level gauge valves. In minor cases, it causes interlocked shutdown; in more severe cases, it leads to fires in the electrolytic cells, cell breakdown, and damage to the ion exchange membrane.
The anode and cathode of the electrolyzer are sealed using gaskets; for most types of electrolyzers, the material of these gaskets is EPDM rubber (Woody electrolyzers use Gore sealing ropes and PTFE gaskets). Asahi Kasei and Beihua Ji use hydraulic presses to achieve a complete seal, while Chlorine Engineering and DD350 employ tie rods to secure the seals. Woody and INOES use individual screw units for sealing. In the event of electrolyte leakage, it is necessary to stop the operation immediately