Re: Frac /reflux still designs
- Well, as we all know a reflux still can be built with open top and in
fact it needs to be open to atmosphere. Some designs use a cap on top
of the column with ventilation hole to cover inefficient top
condenser or just for good looks.
In this case we can use the cap for our advantage. We'll make a top
cap and for ventilation we have a simple ball valve (or similar) that
can be closed when necessary. With the cap in place, ventilation
closed, reflux condenser bypassed and product valve fully open the VM
still becomes a simple potstill with increased amount of internal
reflux due to packed column. Very good gear for making whiskey, rum
and brandies. You can either remove the packing or adjust the cut ABV
to somewhat higher level when using this rig as a potstill.
Note, having both valves in the system closed simultaneously is
dangerous and can lead to overpressure in the boiler.
--- In email@example.com, "needragonn" <needragonn@...>
> Can you explain what at "topcap ventilation valve" is?
> ie. How it works/benefits?
> Also do you have plans?
> --- In firstname.lastname@example.org, "abbababbaccc"
> <abbababbaccc@> wrote:
> > A VM still with oversized product condenser and topcap
> > valve gives better results in both categories.
> > Cheers, Riku