There is a lot of bubbling in the sight glass of the top-product pipeline in the reduced-pressure distillation
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It is a vacuum distillation tower with a vacuum level of -0.095 MPa; the flow rate is controlled by overflow from the reflux tank at the top. A sight glass is installed on the overflow pipe, and a large amount of bubbling is observed inside it. I would like to ask everyone what could be the cause of this bubbling? 2082
There are leakage points or low-boiling-point substances entering
First, there are gaps in the system. Secondly, there are low-boiling-point substances in the system; the pressure is -0.095 MPa, resulting in a high vacuum level, and these low-boiling-point substances vaporize again after passing through the condenser.
No explanation needed – there’s a leak at the sight glass
The material enters the tank from the bottom of the receiving tank; 3–4 KPa of nitrogen is introduced into the tank to create a nitrogen seal, and the vacuum extraction point is located at a vertical distance of more than 10 meters from the discharge control valve