A web search finds this:
https://en.wikipedia.org/wiki/Denatured_alcohol
which helps my understanding of what that is.
I've always called it denatured alcohol.

A couple thoughts.

First, that heater creates heat that has to go some
where. Could be nice in the winter, when you are
heating already to keep your self and shop warm.
Not sure if the cost of the electric is less than
the cost of the fluid.

Second, the flux and debris will accumulate in the
pressure cooker. Nice to line that with aluminum
foil, or a pie pan from Dollar Tree, so you can
lift the foil / pan out and discard. Rather than
junk the entire cooker.

Alcohol vapors are flammable. Know that, and work
with whatever safety is needed.

With that boiling / condensing temp, room air and
a fan might be well enough to condense the vapors.
Condensor off a dehumidifier might be enough, or
use the evaporator out of an old frost free refrig.

I used to find auto dry gas for 50 cents for 12 ounces,
now and again. That could work for your process. I have
a bunch of bottles of drygas, that I don't use. The
gov't makes the auto fuel guys put in 10% ethanol, so
it's like having a bottle of drygas in every gallon
of fuel. Using auto drygas might be cheaper and less
labor intensive than recycling the denatured, and
have to scrape out your cooker.

I'm curious to hear how this all works out. Please
be kind enough to write again.

Vote for my guy, and shoot my favorite type of gun,
also, please.



..
Christopher A. Young
Learn about Jesus
www.lds.org
..

On 9/9/2013 4:22 AM, Scromlette wrote:
It's got some minor metal work involved, but unfortunately no guns or
politics.....

I use quite a bit of methylated spirits to clean electronic PCBs as part
of a cottage business I run. The solvent becomes laden with dissolved
rosin flux & has to be discarded so I've been thinking about distilling
it for reuse. It's costing me 3 or 4 dollars per litre.


I was toying with the idea of electrically heating an old pressure
cooker vented through either a copper coil or an old refrigerator heat
exchanger. I'm not sure if draping wet cloth on the heat exchanger would
be sufficient cooling.

I think the BP of the methylated spirits is ~ 82 Celsius (180F).
Has anyone any experience doing this sort of thing (moonshine perhaps?)

Will it be worth the effort?