Cavitation in centrifugal pumps
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Hello, experts. Recently, the lean amine liquid pump in our combined unit has been experiencing frequent cavitation, with significant vibration at the site. Cleaning the filter didn’t remove many impurities, and there is only one valve between the tower and the pump. A cooling line runs from the tower to the pump inlet to help reduce temperature. We seek help from all experts to resolve this issue. Thank you
I hope without changing the original structure
There is only one valve, where is the elbow?
“Is there a counter-tower line at the pump inlet for cooling?” I wonder if the medium known as “poor amine” is related to temperature changes? Like crystallization, vaporization? ? Density change? ? ? The temperature factor should be checked to ensure it is within the specified range. The physical and chemical properties of poor amine should be checked.
Remove the fine filter screen and change the sealing to double sealing
Has this situation only occurred recently, or has it always been like this?
I’m not sure if it’s the amine liquid pump of the purification unit? Is there a flow meter at the inlet? Is there a minimum return valve on the outlet?
Did it appear only recently? Have the on-site process conditions changed? Is there any change in the net positive suction head of the given device? Under rated operating conditions, the required cavitation head of the pump remains unchanged