When using glass plate level gauges to measure aromatic media, seal leakage of the glass plate is quite severe; how can this be resolved?
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This post was last edited by tanronghuiws on 2011-2-21 at 15:52. In aromatic extraction units, the glass level gauges in the top reflux tanks of solvent recovery towers often experience leaks, manifested as bubbles inside the gauge (due to negative pressure conditions). Replacing these gauges multiple times and using them for a while does not resolve the problem. Fellow experts, how does your company address the sealing issues with these level gauges?
It is recommended to replace it with differential pressure control or double flanges, which yields good results and ensures safety.
The glass plate level gauge you are using may have rubber-asbestos gasket seals. Aromatics can dissolve and cause leaks. It is recommended to try using a graphite gasket
A graphite gasket should be chosen. It’s probably this issue.
Aromatic compounds have high dissolution and penetration energies; to address this issue, it is sufficient to contact the level gauge manufacturer to have the sealing material replaced.