Re: Still with stripper
- View Source--- In Distillers@yahoogroups.com, "random9988" <mugg@h...> wrote:
> --- In Distillers@yahoogroups.com, "abbababbaccc"like
> <abbababbaccc@y...> wrote:
> > The second column is actually pretty straightforward, but I'd
> > to know a bit more about the operation. First of all how muchI think the concentration of head components in a mash is around 1%
> > do you get from one run?
> I try to keep it at 10:1 at least, so 10 drops of product and one
> drop of head. I'm not sure how concentrated you can have without
> getting some in the product. Have to check that further. The longer
> the stripper is the higher the concentration can be, the more power
> you give column 2 the higher the concentration of heads can be. It
> seems to do okay even at 30:1 but I need to make more runs to be
> sure of that. I don't use a valve at the top, I use a pipe with
> passive air cooling, check the pictures, so it a little bit
> difficult to adjust.
of total alcohol. I couldn't find exact figures but 1% seems to be
close assumption. I have been able to concentrate heads into 100ml
from 4 liters of total, so 30:1 will propably work quite well.
>You don't need a bottle, just make the LM collector large enough. I
> >Do you need to remove them at all or could
> > you just let them buzz at the top of the column?
> That's what you do in a way but I suppose you mean without removing
> any, I think you need to remove some continuously or have a buffer
> at the top to make that work. An interesting approach would be to
> have a small bottle at the top the act as a buffer. All reflux from
> c2 enter the bottle first and overflow from that returns to the
> still. When the run is over, empty the bottle. Or make a head that
> keeps a lot of reflux at the top and empty it at the end of the run.
think 1 dl should be plenty. Just empty it after the run is finished.
> >Isn't there aSo you direct some flow back to the boiler, not the lower part (can
> > danger of overfilling column 2 if you withdraw the product slower
> > than you feed the second column (I guess this is one reason why
> > need the buffer)?
> Check the pictures again, you can't overfill c2 because some of the
> reflux is fed to the boiler, the remaining comes out as product. If
> you feed it faster, the same amount of reflux will go to the boiler
> as before, and you get more product. The valve act like a power
> controller. taking a certain amount of reflux and feed that to the
> reboiler, overflow is product.
be thought as a boiler) of the second column? A small hole at the
lower part of column 2 could propably be used as overflow protection.
What am aiming towards is to equlibrate the column 2 at the start to
really concentrate all the heads. May not be necessary though.
> >You mentioned that the second column couldn't copetry
> > with high concentration of heads without the buffer, what exactly
> > happened? Did you get heads out from the product pipe? Did you
> > to equilibrate the second column?where
> I made sure that there where alcohol in c2 to begin with so it
> warm and ready for feed. When I fed it with product from c1 theproduct
> product from c2 still contained some heads. I can't turn off
> in c2 completely and let it equilibrate for some time, If I woulddo
> that c2 will get more and more alcohol and the power will rise morea
> and more. But if you use a buffer at the top of c2.. then you have
> different situation.. now you got me thinking.Yup, you could eliminate the buffer bottle and make the system really
nice and compact. Large LM reservoir at the top of C2.
> About the ARC head, as I said there are no tails, but apparently
> can't feed the boiler with just about anything. I tried to distilYeah, I'll have to think this further as well. The rum taste is
> some molasses mash to vodka, and it was okay until the end, then I
> got rum taste anyway. So keep to good mash for vodka. Good length
> and packing is essential. As you have probably seen some some
> Swedish fellows and I are trying to develop the idea a bit further.
> Maybe it's possible to achieve simple operation with one column
> only, we'll see
propably caused by some leftover sugar in the mash getting burned by
the heating element.
> > I guess I'll just have to build one sooner or later, I just wantalways
> > understand this more thoroughly before I start tearing down my
> > current rigs for spare parts :)
> Yep it would be interesting to get data from more people. You
> seems to make some interesting changes to the setup so I'm lookingThanks for your kind words. I was thinking along the lines of ~500-
> forward to hear about the future designs. Don't forget that you can
> use only one condenser insted if you feed the vapour from c2 back
> to c1. Not sure but that could be an better design even though it
> increases height some.
1000W, 2 * 40mm columns, elimination of buffer bottle, condenser made
of convector pipes and so on. I'll try to post a sketch when I got it
> Using a stripper to remove heads is not my invention, it's
> done in the industry for many years but I guess I'm probably one ofIIRC the idea was discussed ~two years ago, but you sure get the
> the first to build a home version.
credit for pioneering this approach for homedistillers.