Negative pressure reactor circulation pump
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I have a gear pump installed to circulate fluid in the reaction vessel. Material feeding works normally at normal pressure or slightly negative pressure, but it stops when the pressure is -0.92 kilograms of negative pressure. What’s the reason?
The device does not have sufficient net positive suction head, resulting in cavitation in the pump
But pumps under the same operating conditions have no problems. Also, this pump has started showing this issue recently; it was working fine before
Is the flow rate the same? Is the temperature of the medium the same? Is the inlet pressure the same, and is the medium identical?
Mm-hmm, our facility has thirty identical production lines
If all the parameters of your installation are the same and the piping layout is identical, then the problem is most likely to lie with the pump itself – for example, whether the valve spring of the pump has failed, if there is any wear, or if the gaps have increased
Suggestions: 1. Check whether the process control of the reactor is normal and whether low-boiling substances are being entrained. 2. Investigate problems with the pump itself. Try replacing it with a device that can perform normal operations using other sets!