Oil dripping from the dry gas seal vent pipe of the rich gas compressor
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Is the oil dripping from the dry gas seal vent pipe of the rich gas compressor an indication that the seal is not functioning properly, with oil leaking into the dry gas seal area?
Today, compressors generally use mechanical seals from John Crane; these seals come equipped with a pressure difference monitoring system provided by the manufacturer, which ensures their proper operation. The wear condition of the seal can be monitored based on the pressure difference, and the sealing effect can be maintained by making slight adjustments to the pressure of the sealing medium. You might be referring to the old units of the old equipment. Based on the pressure difference gauge of the oil seal or dry gas seal, the pressure of the dry gas medium can be increased accordingly, or the pressure of the oil seal can be reduced.
We use 2 sets of dry gas seals in rotation; during maintenance, we replace them with good ones while using the old ones for repair. Perhaps the repair company we hired last time wasn’t very skilled
This situation should be repaired promptly to identify the cause
As long as the pipelines are not connected incorrectly, it means oil is being introduced under sealed conditions. Sealing of the oil inlet – in mild cases it causes damage to the seal, while in severe cases it wears down the rotor. It’s best to have the manufacturer come and take a look