What kind of pump is suitable for unloading liquefied petroleum gas?
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Currently, liquefied petroleum gas is unloaded mainly using compressors; to increase the unloading capacity, pumps are being considered for use. Dear sea friends, please discuss which pump would be better
Cage pumps can be considered; magnet pump options are also good at the moment.
It is best to use pumps with a lower net positive suction head, such as sac pumps. Secondly, those with better sealing performance are preferable, such as magnetic drive pumps
For unloading, magnetic pumps are recommended. Many manufacturers these days use self-priming pumps together with protectors for unloading, but this method is not very effective and does not ensure complete unloading. Injecting nitrogen in combination with a magnetic pump yields better results for unloading
Why not consider a sliding vane pump?
Can a sliding vane pump prevent the problem of not being able to pump fluid?
A compressor will do; it’s slow, but it’s safe. If liquefied gas contains water, pumping it can cause freezing. It’s difficult to handle
Pumps are used to address the issue of slow unloading
Sliding vane pumps have a certain self-priming capacity, and there are pump models designed specifically for liquefied gas. I’ve done the calculations based on specific operating conditions, but I’m not very familiar with those related calculations. I just see that this type of pump is used quite often for loading and unloading vehicles, and users report good results from it.
It is best to use a combination of a diaphragm pump and a compressor
You can try cartridge pumps or magnetic pumps; shielded pumps have too high requirements for gasification. . .