Difficult issues regarding pressure relief devices
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The oil transfer line in the vacuum distillation tower vibrates violently and makes a loud noise. What is the reason? Who has encountered such a phenomenon? This phenomenon is most likely to occur during the breakdown of the vacuum after the vacuum pump stops operating. Please ask an expert to answer.
How to break the vacuum? Fill with nitrogen? Personally, I think this phenomenon might be similar to the water hammer effect in steam lines
The pressure-reduction oil transfer line shouldn’t vibrate violently; according to the description, the vibration seems quite strong. Does the vacuum break occur during normal shutdown or emergency shutdown?
Check the supports in all areas to see if they are appropriate~~ Also, is there enough pipe compensation? ~~
The description is not specific enough – does vibration occur during normal operation as well, or only when the vacuum is disrupted?
It is likely that the support is insufficient; as the temperature of the oil transfer line rises from room temperature to 380 degrees, it will \"grow\" along with the tower. If the upward support compensation is not adequate, the oil transfer line will end up hanging in the air. As for the louder noise when breaking the vacuum, is it because the pressure changes too quickly?
It’s probably because the vacuum is being removed too quickly!
I just stopped the vacuum pump; nothing else was done. The sound that occurs as the vacuum gradually dissipates, from 98 to 80 KP. If the bottom liquid level is full, will there be a sound when it exceeds the inlet of the oil transfer line?