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Removal of trace amounts of water from lube oil

Removal of trace amounts of water from lube oil

Removal of trace amounts of water from lube oil

(OP)
We are trying to start a lube recycling program at one of our plants.  We use a Mobil oil product Pegasus-701.  The oil we are concerned about has been collected from the catch drains from our older compressor units (which tend to leak the oil faster than they can wear it out).  We have lab tested the refiltered lube oil to determine the viscosity and TAN of the recycled stock.  The only problem is the trace amounts of water (generally rain water collected in the catch basins, fresh water) intrained in the filtered oil.  2 to 5% by volume.  We are considering a heating tank (220F plus) to boil or steam the water out of the recycled oil  but, this seems like a lot of trouble for every barrel of oil recycled.  Does any one know of a better method to remove this water content?  Maybe a manufactured filter of some type which would catch the water to separate?  Possibly a centrifuge separator?

RE: Removal of trace amounts of water from lube oil


I've heard that air stripping may help.

RE: Removal of trace amounts of water from lube oil

(OP)
I am not familar with the process of "air stripping", please advise or describe this method.

Thanks,

jlb1104

RE: Removal of trace amounts of water from lube oil


Sorry for the delay. Heat the oil and bubble air, better bubble nitrogen to avoid oxidation of the oil. The partial pressure of the water would suffice to evaporate it.

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