The vacuum pump fails to achieve the required vacuum level
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We use a crude benzene hydrogenation process; we require vacuum operations during distillation, but our vacuum pumps are unable to achieve the vacuum level required by the process. Could you please analyze the reasons?
Equipment type and model, designed vacuum level, required vacuum level, previous operating conditions, etc. You haven’t said anything at all – how am I supposed to guess? ! !
The model of the vacuum pump, its air intake capacity, and the vacuum level it can achieve are all related to each other. If the vacuum pump is not damaged, then it’s likely a problem with the amount of air entering the vacuum pump in the system.
(1) The vacuum pump is not operating properly； (2) Vacuum system leakage ； (3) Water accumulation in the pipes inside the vacuum system or leaks within the system ； (4) Too much dust accumulation in the vacuum pipeline ； (5) High condensate water temperature ； (6) Low condensate flow rate or clogged condensate nozzle ； (7) Low steam pressure ； (8) Low steam temperature ； (9) Failure of the condensate drainage pump.
Reply to 3# come_now: The vacuum pump was just replaced, and experiments conducted by the manufacturer work fine, but they don’t work when used with me. The true control system has excellent sealing.
1. Improper selection; not suitable for your environment； 2. There are leaks in the inlet pipe system; was it pressure-tested before use? ； 3. Prolonged use of the pump has resulted in an excessive seal gap in the pump.
Guan Jian also involves fluctuations in air intake volume, as well as the temperature and flow rate of the sealing fluid.
If the temperature control of the reflux tank is too high, or if there is a blockage in the liquid-phase pipeline due to low temperature, or if the pressure at the gas-phase outlet pipe is too high, it will also cause problems.
The poster should clarify what type of vacuum pump it is and under what operating conditions it was tested by the manufacturer; these conditions may differ from those in actual use. At the very least, they should provide this information so that everyone can analyze the situation together and learn from it*