PD or Centrifugal, which pump should be used for Oil Road Tanker unloading?
PD or Centrifugal, which pump should be used for Oil Road Tanker unloading?
(OP)
I have to select the type of pump to be used for ASL (Arabian Super Light Crude) road tanker unloading station. Viscosity of ASL is 1.5 to 2.2 cP and vapor pressure is high and at 50 degree C it is 92.3 kPa. Our company standard is to use rotary screw pump for similar application. However, we are facing problem in one of our project (still under commissioning) where screw pump used. Can i use centrifugal pump for this service? What are the problem may face if i select centrifugal pump instead PD?





RE: PD or Centrifugal, which pump should be used for Oil Road Tanker unloading?
However most centrifugals don't like running on a mixture of liquid and gas, like you might get at the end of the unloading operation.
Hence for unloading you might need either a can type pump or place your pump in a pit below the road tanker.
If you can it might be a lot easier to simply gravity feed into a buried tank and then pump out from there in more controlled conditions? Doesn't have to be the same size as the tanker, but simply act as a buffer between the tanker and the pump and then use a submerged pump (vertical shaft) inside the tank and have pump stop on LL liquid level. Just an idea.
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RE: PD or Centrifugal, which pump should be used for Oil Road Tanker unloading?
RE: PD or Centrifugal, which pump should be used for Oil Road Tanker unloading?
That would be a sliding-vane pump such as those produced by Blackmer or IDEX.
Please respect us ...... Tell us of your final decision and the reasons for it
http://www.corken.com/sliding_vane_technology
http://www.psgdover.com/assets/blackmer/MC/atk3533...
MJCronin
Sr. Process Engineer
RE: PD or Centrifugal, which pump should be used for Oil Road Tanker unloading?
RE: PD or Centrifugal, which pump should be used for Oil Road Tanker unloading?
RE: PD or Centrifugal, which pump should be used for Oil Road Tanker unloading?
Getting the last 5% out of the tanker can take some time so this would allow you to control flow based on a minimum level of say 2m in your oversized down pipe.
Flow switches are notoriously inaccurate, especially when a mixture of liquid and gas is coming through.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: PD or Centrifugal, which pump should be used for Oil Road Tanker unloading?