Re: [Distillers] First run part two
- On Tue, 04 Jun 2002 13:08:24 -0000
"npaisnel" <npaisnel@...> wrote:
N> Too see the boiler vapour temp and top temp in the head sitting so
N> stable all day, while producing 96% spirit, and then to watch as the
N> boiler temp rose up to about 98 deg C followed about 25 mins later by
N> the top temp rising to 81 deg C and the immediate change in smell and
N> percentage was simply amazing. That it all works exactly as theory
N> predicts, and to see it happening so clearly is stunning.
I am happy to see that it worked very well for you. Some are not as
lucky to have their stills run as smooth.
N> Pictures have been posted this morning at
N> Created using MS Home Publisher 2000, probably the worst and most
N> cumbersome, slow and utterly crap piece of software I can honestly
N> say I have come across. I should have gone home got my laptop and
N> done it on my own machine.
I tried to view the page today, but the only thing I was greeted with
was an error from one web browser (Mozilla) stating that there was an
undefined error on the page. I then opened is up in Netscape (4.75) and
I was only met with some graphics that look like they should be buttons
(but they were not) and two pictures of your workshop. The page was a
mile long with nothing except for what I had noted.
Rev. David M. Cunningham
- If your browser does not like the pages
get direct pics
replace ** with 01 thru 00
replace 8 with 1 to 10 or so
to get direct to the pics without the XS HTML created by Microsoft
some are relevant, others not
Great photos of your setup. Sure is a tall one !
> Total output was giving 250ml per min, I ran the system to the end atWell, 96% is as good as anyone can get - great result. At 250 mL/min with
> 25ml per minute,
> How do the figures mentioned above, in relation to still output and
> alcohol recovered, compare with theoretical results? IE how good is
> the system
6kW thats about a reflux ratio of 2 (eg you return 2mL for every 1mL you
keep). Thats fantastic - most people need RR=4 or more, and many run at
RR=10. Your advantage is the use of the 2m column - letting you keep the
high purity, but take it off at such a quick rate. At the end, 25mL/min is
RR=20, which for mortal (eg < 2kW) stills, is too slow to consider. But
your huge heat input handles it well, letting you stretch it right out to
Great to see that 67mm diameter handles the 6kW well - its the same ratio
that I used : 1800W/1.5", scaled up. Good to know that that rule-of-thumb
> possible misunderstanding TonyAhh ... thats why it took 11 hours.
> The total output of the still with valve fully open is 250ml per min,
> and i ran the system all the way through at an output of 25ml per
> min. Once i set the valve i left it through out at the same setting.
>I have a wee calculator at http://homedistiller.org/dtw.htm#use_fract which
> What i was wondering was if 250ml/min total output was too low for a
> 6kW input. The reason i ask is that i think I get some loses of
> distilate as it drops out of the 'funnel' below the cooling coil and
> into the collecting cup inside the still head. I may need to lower
> the initial 'funnel ' lower into the collecting cup.
does the maths.
For 6kW at 96% you'd be expecting more like 490 mL/min. I wonder if
you're losing a lot to the uninsulated walls of the column - condensing on
them before it gets all the way up. See if things change by insulating the
Next run, try a bit faster. That height & kW, I'd expect you to be able to
at least collect at 80-100 mL/min
> Next advance now i know the sizing works is to build it out of dairy
> stainless tubing, and a boiler from a jam making factory that I
> recently acquired.