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french fry oil as kiln fuel - ben's mention of a cleaning method...

updated wed 4 aug 04


pdp1@EARTHLINK.NET on mon 2 aug 04

Hi Ben. a very nice idea you mention...I will remember
it...thank you!

I see the situation as having two (2) logistical
challanges -

One, the 'cleaning' or to some degree purifying the Oil...

Two, having a Burner adapted to run on it effeciently.

I think both of those considerations may be answered easily
and well, by ideas such as the one you mention, and, by
other experiment.

Very effecient Burners adapted to run on disuded cooking
Oils are avaialable, as too, are the plans to make them if
one likes.

I would all is looking very promising...!

Best wishes,

el ve

----- Original Message -----
From: "Ben Shelton"

> I did see a mention about a really cool settling method.
> In a LARGE tank you can use a supply of air bubble to
settle out sediment.
> The set up was like this.
> At the end of an air hose the site author used a bench
grinder wheel (with
> the center hole plugged) built into a small housing. This
wheel/housing was
> hooked up to a compressed air line and the air was forced
through the
> porous wheel into the bottom of the oil container. The
result is a million
> tiny bubbles. These bubbles take away part of the bouyancy
of the oil and
> allow the sediment to settle out faster. Cool huh?
> I also saw that you can mix water in with your oil,
agitate well, settle,
> then decant the oil (it will separate out into a layer,
you know, oil and
> water dont mix). If you mix with water and add the
bubbleator is should
> really speed up the whole settling process.
> Food for thought.
> I don't have any good info on filters. I assume that a
large paper cone
> would work if the paper is the right type.
> Great discussion, Ben

Ben Shelton on tue 3 aug 04

I have been reading up and there is a yahoo group called


that will be of interest to those following this thread. Most of those
folks are using standard oil fired furnace burners and running them on
biodeisel. The big stumbling blocks for an efficient, reliable burn are (as

1. Oil supply
2. cleaning the oil
3. Oil viscosity and flash point at the burner orifice.

Seems that after cleaning the oil it needs to be preheated before going to
the orifice because it doesn't burn clean unless hot. Most are using air
pressure nozzles to atomize oil that has come from a pre heater tank and
forced air to supply the furnace combustion system. OH, they usually have a
continuous high voltage spark system for ignition.

right now my plans are to try and throw something to gether as a shop
heater to test the design and maybe make a kiln burner based on the reults.

If I have any success I'll post it here.