Methods for controlling vacuum level in PID diagrams
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Dear everyone: The system operates under negative pressure; the gases coming out of the reactor are condensed in a condenser and then sent to a receiving tank. The negative pressure interface is located on this receiving tank. The issue now is how to control the vacuum level inside the reactor. In the design, an adjustable valve was installed on the pipe leading from the condenser to the receiving tank, and this valve is linked to the pressure inside the reactor. By adjusting the opening degree of this valve, it is possible to control the vacuum level inside the reactor. Is this approach feasible?
Air can be introduced by connecting a pipe to the receiving tank and installing a control valve; if the process does not allow the introduction of air, nitrogen can be used instead.
I don’t think there’s anything wrong with the design done by the design institute, right? What does LZ think is not right? The adjustment method proposed for the 2nd floor allows adjustment only in one direction: when the vacuum level is too high, a little air or nitrogen can be added to reduce it. However, this increases the load on the vacuum pump, which I don’t think is appropriate.
The condensing effect of the condenser here is very important; otherwise, it will carry away the material.
Adding nitrogen to the pipeline leading out of the receiving tank can help regulate the vacuum level; moreover, a control valve can be installed on the steam pipeline to control the steam flow and thereby regulate the vacuum level
I think what the original poster said about the design done by the design institute is correct – the vacuum level is adjusted by modifying the diameter of the vacuum pipes; our company has many examples of doing this