Pressure-bearing issue of coalescer
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I installed a liquid hydrocarbon coalescer. The design institute advised us that when removing the coalescer, it is necessary to depressurize it to atmospheric pressure; I’m not quite sure about this – doesn’t it need to be held under pressure? It’s still a structural issue inside. Brothers in Wanghai, please explain
It’s not that there is no pressure involved; rather, the concern is that changes in conditions such as temperature after prolonged removal might lead to variations in the pressure within the coalescer. Generally, after removing such equipment, people tend to forget to monitor the pressure, which can result in equipment failures!
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Firstly, since the medium is in a liquid state and occupies a small volume, the pressure of the equipment increases significantly under the influence of temperature; therefore, it is necessary to drain the fluid in order to protect the equipment. Second, hydrocarbon coalescers are primarily used for dehydration, in order to prepare them for future use as well as to prevent freezing and condensation
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