High Pressure Piston Pump

Question

High Pressure Piston Pump

PeterKSanders (Chemical)

(OP)

13 Apr 23 13:29

Hello, I have a high pressure piston pump that will run LNG at 310 barg and -150°C with an inlet pressure of 7 barg. I was told that at slow speeds it would cavitate. I don't see why slow speeds would cause cavitation as slowing a normal pump down is one of the ways we solve cavitation in other pumps. Any insight would be greatly appreciated.

Compositepro (Chemical) · Answer 1 · 2023-04-13 17:18:03

Heat leakage through the insulation becomes a problem causing boiling of the LNG at lower flow rates.

georgeverghese (Chemical) · Answer 2 · 2023-04-13 23:52:32

In general, piston pumps have high acceleration head requirements and depend on good pulsation suppression on the suction (and discharge) side to work well.
I would selecting a good triplex (at least) plunger for LNG if it is operating close to bubble point. Minimise dependence on pulsation attenuation with pulsation dampeners.

LittleInch (Petroleum) · Answer 3 · 2023-04-14 06:19:29

Doesn't seem right but would need more information. Also you need to go back to the source of this information and challenge them to explain

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

Come Join Us!

Posting Guidelines

High Pressure Piston Pump