Oil Filtration

You may have to "wash" the oil with a water mist to remove the finest particulate matter. I have seen processes for making biodiesel in which they spray a fine mist of water over the biodiesel and let the water settle to the bottom of the tank. They draw off the water from the bottom and then heat the oil to dry it. Then it is filtered. This may be useful in your system.

Centrifugal filters will be good option.

we generally use is for the filteration of the removed hydraulic / transmission oils for re-use. This removes any foriegn particles/water particles etc.

This is in use in many of the places.

Kindly check the suitability for size etc.

Probably the oil container does not have proper slope to drain all dirty oil to the filter system. Please check

All foriegn particles are trapped in the paper filter which are inserted ll along the wall of the centrifuse bowl and water is thrown out of the out let pipe/hose.

this is a proven method and it works.

Only, the person should select the right one.

Please provide an estimate of the total quantity and GPM of the oil needing filtered.

Wound cotton filter elements are best for removing rust

check out Frantz Filters. they can filter out stuff the size of ciggarette smoke. Frantz Filters .com

First a few comment on the process.

The process that is carried out at our place

the first step is baking (or rather burning) the pipe lines in oven to de-bond the paint, grease, preservatives etc applied on the pipes and flanges. This improves the life of the acid bath.

Ensure the flow, churning in the acid bath and the bath temperature so that the steel surfaces are properly pickled.

After the DM water cleaning we have a step for neutralising and passivating. Though may not be mandatory, but this is being done at our works.

As far as the removal of the particles are there - why don't you try out magnetic separation (most of the iron particles will be removed by this simple method) and Eletrostatic filtration (kidney loop) or the centrifuge?

Only be careful of the acid built up in the oil, since you are not neutralising the pipe after pickling and incomplete removal of acids in rinsing may result in this.

Great answer sb.

"As far as the removal of the particles are there - why don't you try out magnetic separation (most of the iron particles will be removed by this simple method)" We installed eriez magnets on our drawbench line and they pulled out more scale, oxide and steel shot from our blasters than our VP could believe.

We ended up needing to empty it once a shift for first couple of weeks to deplete the saturated oil and sumps (who changes out oil these days) and got it down to changing every two days.

Sometimes simple is the best answer.

milo

Our experience is same (In fact in our facory machines, in the circulating Lube Oil system, as well as the machines we supply to customers as OEM) we have the magnetic separators invariably in position to collect the wear debris. And it is surprising to find the collections made by them.

And they are simple ones - permanent magnet plugs fixed inside the filter, just allowing the oil to pass over them at low speed.

Sometimes simple is the best answer

very true-

I have seen simple jigs replacing complicated and inefficient machines