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Screw Type Compressor In Vru Of Lpg Storage System


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#1 fallah

fallah

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Posted 24 November 2008 - 12:20 PM

Dear All,
Can everybody, who has a lot of experiences in VRU (vapor recovery unit) of LPG storage system,answer to my below questions:
-May the screw type compressors be suitable for recovery of LPG (mostly propane) vapors would be generated during its storage as BOG (boil off gas)?
-If so,should the compressor be oil-free?
Regards

#2 Art Montemayor

Art Montemayor

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Posted 24 November 2008 - 01:20 PM

Fallah:

Screw compressors are being used quite a lot in VRU units - especially those with capacity controls.

There is no reason to specifiy an oil-free unit - unless you require it for your process. If so, be prepared to accept a marked increase in slippage and an efficiency drop.





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