reflux spirit run

Other discussions for folks new to the wonderful craft of home distilling.

Moderator: Site Moderator

Post Reply
maka
Novice
Posts: 67
Joined: Tue Nov 20, 2012 5:56 pm

reflux spirit run

Post by maka »

So learning to run my Boka

i have a question.

Since foreshots and heads pretty much come out at set temperatures. Can we not hold at those temps while we clear those fractions?
then come to equilibrium and start taking off at high purity. i would think we should be able to hold needle valve wide open and collect everything under a given temp?

i assume this is being done just curious what peoples experience with it is

thanks
User avatar
still_stirrin
Master of Distillation
Posts: 10371
Joined: Tue Mar 18, 2014 7:01 am
Location: where the buffalo roam, and the deer & antelope play

Re: reflux spirit run

Post by still_stirrin »

Try it.

And tell us how it works!

Best of all, tell us how long your run takes....I’m curious what you learn.
ss
My LM/VM & Potstill: My build thread
My Cadco hotplate modification thread: Hotplate Build
My stock pot gin still: stock pot potstill
My 5-grain Bourbon recipe: Special K
User avatar
zed255
Distiller
Posts: 1023
Joined: Thu Jan 05, 2017 7:06 pm
Location: Ontario, Canada

Re: reflux spirit run

Post by zed255 »

Maka, the 'running by temperature' idea has been beaten to death here. The idea looks good on the surface, but distillation does not work that way, so when you try it the effects on still behaviour won't be what you think.
----------
Zed

When the Student is ready, the Master will appear.
If you can't explain it simply, you don't understand it well enough.
maka
Novice
Posts: 67
Joined: Tue Nov 20, 2012 5:56 pm

Re: reflux spirit run

Post by maka »

zed255 wrote:Maka, the 'running by temperature' idea has been beaten to death here. The idea looks good on the surface, but distillation does not work that way, so when you try it the effects on still behaviour won't be what you think.
Understood, thank you
Seanjohn19
Novice
Posts: 80
Joined: Tue Jan 05, 2021 12:20 am

Re: reflux spirit run

Post by Seanjohn19 »

still_stirrin wrote: Fri Jan 29, 2021 6:24 am Try it.

And tell us how it works!

Best of all, tell us how long your run takes....I’m curious what you learn.
ss
Everytime your an ass I will point it out 😃
User avatar
NZChris
Master of Distillation
Posts: 13732
Joined: Tue Apr 23, 2013 2:42 am
Location: New Zealand

Re: reflux spirit run

Post by NZChris »

Even though Kiwistiller's method is really designed for pot stills, it is still the method that I use when running neutrals with my Bokakob.
https://homedistiller.org/forum/viewtopic.php?t=13261
User avatar
Tater
Admin
Posts: 9807
Joined: Mon Oct 25, 2004 9:19 am
Location: occupied south

Re: reflux spirit run

Post by Tater »

Seanjohn19 wrote: Sat Jan 30, 2021 10:57 pm
still_stirrin wrote: Fri Jan 29, 2021 6:24 am Try it.

And tell us how it works!

Best of all, tell us how long your run takes....I’m curious what you learn.
ss
Everytime your an ass I will point it out 😃
No if you have a problem you will let a mod know otherwise Ill remove you from site. That's what the ! is for.
I use a pot still.Sometimes with a thumper
User avatar
Tropic
Novice
Posts: 29
Joined: Thu Nov 23, 2017 10:17 pm
Location: Tropical Queensland, Australia

Re: reflux spirit run

Post by Tropic »

You can't change the temperature the wash boils at but you can change the temperature of the vapour in the column. You can do this by running a coil or other cooling system at the base or mid column that is cooler than the vapour but above the vapour's boiling point. Do this gradually up the column and theoretically you should be able to just collect heads at the top of the column without refluxing there. All the refluxing should be achieved within the column by setting lower and lower temperatures towards the top until just under 78C.
I've been discussing this in another thread and in a few weeks I willI begin work on the next stage.
Post Reply