Removing Water from Oil

More the surface area of the sock material, there can be hindrance to the surface of the oil adsorbent face of the chemical.

Based on the solid particle size of the chemical you are using, mosquito net[cotton or nylon] can be tried. Oil repellent and water absorbency finished sock material is another factor to consider, otherwise, the sock can absorb oil and pose handling problem.

How about trying steel wire mesh screens with a suitable configuration?

I will check the micron size and c what I can do but, it is an alternative.. thanks..

Why not just put your oil/water mixture in a container with a small valve on the bottom?

Once they separate, open valve to remove water.

Motor Oil and water when mixed really good do not seem to settle out very well...

here is the link for the product...

biodiesel.coorga.com/quik.html

they have a type of filter system but, I am not too excited about it as the plans are a little evasive...

By that link it gives you the mesh required (35) in the 'build your own tower' instructions.

You could make a tower or use a "sock" of that mesh.

So far as motor oil go's; it generally has a detergent to 'suspend' condensation, which is generally boiled off in 'longer trips'. If the oil has gone "white" you may have a head gasket problem or a cracked head.

If you are doing this as a 'recyclers' - you need to know what effect detergents might have on the absorbent.

Applying some vacuum and some heat, is another way of dewatering - without excessive energy of 100⁰C and loss of lighter fractions in some oils.

34.5

How about heating it and releasing the water as steam?

you know that old phrase oil and water dont mix. the water is already going to

be fairly easy to get at,how about using a spongy material for the purpose of

dunking in the solution and then placing it in the oil/water mixture,hoping the

reusable chemical will also be water smart and be clean enough to dunk again.ds

The only materiel that will absorb water in oil is "silica gel", since you mention a sock to contain the absorbant I assume you are talking about small volumnes 40 Gal.

Silica gel can be laundered in the sock and redried in an oven at 300 degrees F scattered on a thin steel plate.

Donot attempt to use any other silica, crystalline silicas love oil and will absorb only oil, hope you have good oil filters.

several oil filters in a circuit will usually remove water and other contaminants.

Silica gel can be bought with a trace of Cobaltous Nitrate which colours it blue when dry and pink when wet. You can check then when it is dried out after being in the oven. For a sock, try muslin or cheese-cloth, sewn into a bag. Both will absorb oil but don't worry about it.

I have used water absorbing filters for a number of years. Sorry don't have a site but many hydraulic filter manufactures have these spin on units. They are not generally reusable but cost effective.

These people make a 'sock' that goes into a tank to remove water. Don't know if it's reuseable.

We deal with water in oil every day. To remove water depends on several factors. What is the water content of the used oil and what water content do you need to get to in % or ppm level. Since we operate a commercial facility processing some 65,000 USG per day, we simply use a jacketed vessel under a mild vacuum about 150 Torr at about 90C and with agitation. We follow this with the degassing step so 100% of water is removed. Other methods are available but since the author did not state any volume figure, hard to advise him on some filter system or chemical. Hope this helps.

This sounds great except could I ask you to put it into English for me. Unfortunately I lack the formal education that enables me to understand all of those descriptive words that you were using.. Also when you say under a vacuum how is that accomplished. I really appreciate the assistance not trying to give you a hard time.. thanks again..

Ric, I think you are pulling my leg a little with your reply. You already said in one of you posts that used oil and water do not separate very well. This is true if you are looking to get a very low water content. We use the settling method in our 35K USG waste oil storage tanks. But often we need to process the waste oil before we can achieve maximum separation by specific gravity alone, therefore we need to heat the waste oil to remove 100% of the water. Since liquids have a known boiling point at atmosphere pressure, we use a vacuum pump to lower the pressure in the vessel which lowers the boiling point of the water, which allows to to extract the remaining water faster and efficiently. Since I really don't know what you want to accomplish, I can't help much aside from explaining how a commercial facility deals with water content in used oil.

Given not grasping post 7, or 13, or what you have said, I don't think Rick should be encouraged to play with vacuums and hot oil.

Hi 34.5. Is that the ambient temperature where u live? Thanks for the reply and I agree with you completely. sometimes I wonder why i even try to help someone in the forum when we don't really get much useful information to work with. I think one can presume that anyone dealing with a sizeable volume of waste oil would not be seeking help in this forum. I will probably get a few off-subject rating but that won't bother me very much.

We are a small facility and just beginning to get started.. After U gave me that explanation it confirmed what I thought that I heard. Not being an engineer the theory side gives me a little trouble. On the other hand I was a hard hat diver for years and used to have deep theory discussions with engineers over how to fix something but, could never get them to come and look at the project for some reason.