Pump Vs Blowcase
Pump Vs Blowcase
(OP)
Hello,
For a separator liquid outlet, what are the pros and cons by using a pump against a blowcase? Speciacally, will this choice affect the slug capacity required for the separator? Thanks.
For a separator liquid outlet, what are the pros and cons by using a pump against a blowcase? Speciacally, will this choice affect the slug capacity required for the separator? Thanks.





RE: Pump Vs Blowcase
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"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Pump Vs Blowcase
That unless the OP is talking about a hydro-cyclone.
RE: Pump Vs Blowcase
Best Regards
Qalander(Chem)
RE: Pump Vs Blowcase
**********************
"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Pump Vs Blowcase
There are literally millions of these beasts in use in the world (it is becoming very common for wellhead compressors to have them on the suction scrubber) and they work very well providing you have a source of high pressure gas.
One mistake I see a lot of packagers make is that the equalizing line (to dump the power gas pressure back to the primary vessel) is often too small. Some packagers don't put valves on this line at all and allow the leakage through the 1/8 inch tubing to eventually return the blowcase to service. I evaluated one system that had 10 bbl/day capacity with the small line and 500 bbl/day with a 1-inch line and a control valve.
Back to the OP, Pumps have packing glands to leak, rotating (or oscillating) parts to break, and have a limited number of start/stop cycles before failure. Blowcases have none of these problems. Basically if I (1) have a source of gas at high enough pressure; and (2) have a reasonable place to exhaust the power gas at the end of the cycle (e.g., if you are trying to get liquids out of a flare stack knockout drum, the exhaust gas might have to go to the flare stack) then I will always prefer a blowcase at low pressures.
David Simpson, PE
MuleShoe Engineering
www.muleshoe-eng.com
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RE: Pump Vs Blowcase
**********************
"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Pump Vs Blowcase
David
RE: Pump Vs Blowcase
RE: Pump Vs Blowcase
This has been definitely a Learning update indeed!
Best Regards
Qalander(Chem)