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

updated wed 4 aug 04


pdp1@EARTHLINK.NET on tue 3 aug 04


Hi Ben,

Along which lines, see also...

My own thoughts for initial experiment, were to employ some
conventional cheapie 'spray-gun' as is intended for spraying
'paint', so see various things about how it does in a little
mock-furnace I would build up of stacked brick...then to
fabricate an improved version out of appropriate materials,
to continue on with.

Pre-heating the Oil, as say in a plenum which may be
electrically warmed, then to be switched over to being
warmed by some take-off form the furnace itself, or warmed
how-ever-so, and or
thinning it in some well as having well
filtered it
in some way of course, to assure no particles are present as
could clog the oriface of the burner jet...etc...

Now, as compressed Air is needed for this sort of Burner, I
had in mind to have a good reserve of Air in various tanks
( a dozen or so old Water Heater cores say, ) at maybe
150-160 psi...maybe say five or six hundred gallons of Air
in reserve at that pressure, and, running the burner at say
15 lbs or so, from a regulator of course, would give me some
room to coast if there was a power outtage. The Compressor
would run as it sees fit to do to retain the pressure at 150
kick-in, and say 165 shut-off.

Whether there is any need for hi-voltage ingiters or not, I
do not know...I would think that for my own set-up, when
first starting it up, I would have a simple Wood fire to
pre-warm the whole furnace and get the flues drawing and so
on...which Wood fire would also ingite the atomised Oil once
it is introduced in a fine spray, and that if I had some
sort of things in the flame's proximity which would glow hot
from the ambient temperatures, a small soft-brick chamber or
something say, the flame ought not have any troubles
re-igniteing should it have hic-cupped a moment, which it
should not do anyway...

I would likely have some sort of simple sensor as would trip
a battery-powered solenoid and cease the supply of Oil and
Air to the burner, in the event the temperature were to
conspicuously drop from a flame-out...just so if something
did take a dump while I were out on an errand or something,
I would not come home to puddles Oil filling up the
Stove-Furnace or what...

I would intend my experiments to culminate first, in a
heating Stove-Furnace, and then, in learning with that, to
make a Kiln as would achieve the temperatures I would be
after ( ^11).

The large Air reserve, and a battery-powered solenoid or the
like to run a safety shut-off, is important to me as I know
from experience here and elsewhere, that I may not allways
rely on uninterupted electricity-service.

In fact, given my druthers, were I so be situated somewhere
as had prevailing breezes, I would like to allow all my
lighting to be some effecient low voltage run from a large
bank of Batteries who are kept charged from a small
Windmill. Or if some prevailing Steam were handy, then some
polite little underwater Turbine...And rely as little as
possible, if at all ultimately, on the power-companies and
their greedy heartless cheating rip-off ways.

Too, along broader lines, a Diesel Generator is not
improbable in this scenario...or maybe some old Diesel
Marine or
Stationary Engine hooked up to a Generator would be fine
with me and more fun to look at...and the overall occasions
of my needing Sixty-Cycle one-ten or two-twenty ( 115, and
240, I guess now-a-days) are such that I could (then) get
bye allright not being on the grid at all, or being on it as
minimally as possible.

A few hours a couple times a week generally is all I need
for running the things I generally need to run for the Shop
and all...

Thanks for the fun here on this...

el ve

----- Original Message -----
From: "Ben Shelton"
> I have been reading up and there is a yahoo group called
> altfuelfurnace
> 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
> mentioned)
> 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.
> Ben