Full Reflux ?

Reflux still design and discussion

Full Reflux ?

Postby prawnz » Fri Dec 01, 2017 2:35 pm

Quick question for the wise if anyone is about at the moment .

How long should I hold at full reflux ?

Its been there for about 25 min now and is holding nicely , so the column is well hot , the RC cooling is going at about 1 lt per minute and the head of the column is steady at 25c .

I'm thinking an hour if it will hold there ?

Cheers Al
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equipment: SS Super Reflux with home made 2in 800mm packed extension with RC coil built in .

Re: Full Reflux ?

Postby EziTasting » Fri Dec 01, 2017 2:44 pm

When you read the post in the Newbies section, it mentions to do it for an hour.

I do it for an hour - not because I know any better or that I am a trusting fool, just had no justification to do it any shorter!

There are a number of people here that do it for less, I've read one person did or does it only for 30 mins ... but again, no justification as to why (I am guessing they think its OK and it saves them time)...

The purpose of reflux is to separate the different alcohols by repeated evaporation and condensing, the more volatile will end up higher in the column than the less volatile... as a mixture, the different alcohols DON'T evaporate off as they do when a single alcohol (chemistry - how they react together).

So, logically, the longer you leave it in reflux, the clearer the separation... just keep in mind that they can "smear" in the parrot, so you might have to drain the parrot each different layer ... if you wanted perfect separation!
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Re: Full Reflux ?

Postby prawnz » Fri Dec 01, 2017 3:01 pm

Cheers Eazy , was kinda what I was thinking , just wanted to hear someone else say it . :handgestures-thumbupleft: :handgestures-thumbupleft:

No parrot here unfortunately just a glass tube that I fill up every now and the for curiosity sake .
prawnz
 
Posts: 361
Joined: Mon May 23, 2016 1:44 pm
Location: The Wild West
equipment: SS Super Reflux with home made 2in 800mm packed extension with RC coil built in .

Re: Full Reflux ?

Postby EziTasting » Fri Dec 01, 2017 3:18 pm

prawnz wrote:Cheers Eazy , was kinda what I was thinking , just wanted to hear someone else say it . :handgestures-thumbupleft: :handgestures-thumbupleft:

No parrot here unfortunately just a glass tube that I fill up every now and the for curiosity sake .

:handgestures-thumbupleft: all good.

Someone else will chime in perhaps with more information
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Re: Full Reflux ?

Postby Huntsman96 » Fri Dec 01, 2017 5:54 pm

I reckon you hit it head on Ezi. On all the boka runs I tried to do an hour of stacking and on those where i did 30 minutes i found i got more smearing of heads and hearts.
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Re: Full Reflux ?

Postby prawnz » Fri Dec 01, 2017 6:04 pm

Yep , did an hour and I can already pick the heads to hearts cut I reckon .

I'm a bit over 5 hours into this run , slowest I've ever done by far . Keeping notes for the first time ever to .

I'll post them here incase anyone is running a similar still .
prawnz
 
Posts: 361
Joined: Mon May 23, 2016 1:44 pm
Location: The Wild West
equipment: SS Super Reflux with home made 2in 800mm packed extension with RC coil built in .

Re: Full Reflux ?

Postby EziTasting » Fri Dec 01, 2017 8:03 pm

Nice work! :handgestures-thumbupleft:
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