Leak detection of formaldehyde oxidizer head
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Our plant’s oxidizer has a diameter of 1.3 meters, and the gaskets used are PTFE-asbestos gaskets. Forty-two screws are used to secure them in a uniform manner. Leaks occur every time the unit is started up. We conduct a gas leak test before starting up, but the results are not satisfactory. We have also tried using film reagents and formaldehyde detectors, with little success. The main problem seems to be that the gaskets are compressed unevenly during tightening. Do any of my colleagues have any good solutions?
Using a tetrafluoroethylene tape that’s similar to a rope might be better