How can atmospheric-pressure vessels be prevented from being evacuated in a negative-pressure system!
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Dear experts, good day. Our installation currently has a desolventization tower system. The feed to the tower comes from a pressure-rated storage tank, entering the middle part of the tower via a gear pump; below the tower, it passes through a 0.5-meter U-bend before reaching the desolventization vessel. A DN200 pipe above the desolventization vessel leads to the middle and lower sections of the tower. The volatilized solvents enter the tower for recovery, while the condensate from the tower goes to its top. What measures can be taken to prevent the feed pipes and the return tank from being emptied? Thank you!
Do I need to install a breathing valve? Hehe......
The feed pipe and return tank are evacuated as a result of the combination of vacuum level, flow rate, and your condensation efficiency. You need to prevent yourself from being emptied as much as possible; certainly, the speed of reflux must be slightly higher than the speed at which material flows away, and losses also need to be compensated for. In that case, isn’t the speed of reflux closely related to the control of condensation efficiency and vacuum level?
OP, it would be better to draw a flowchart; that will make the analysis more intuitive!