 Rank: Junior Member Groups: Registered
Joined: 12/10/2010(UTC)
Posts: 70
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Need input on this one, it I were to convert the new column I just built to a dual purpose reflux, where would be the best level to install the pass through tubing? A, B, C, or D levels or some where else? Sparky attached the following image(s):  Stainless Still02A.jpg (93kb) downloaded 3 time(s).You cannot view/download attachments. Try to login or register.
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 Rank: Senior Member Groups: Registered, Moderator
Joined: 7/25/2009(UTC)
Posts: 2,209
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"Why not just look at he pictures of the brewhaus stills for a location.   "
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Rank: Senior Member Groups: Registered
Joined: 12/10/2009(UTC)
Posts: 519
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"Get your reflux crossovers as high as you can.
This will allow for better vapor stacking or more specifically better fractioning.
Cooling to low on your column will not allow the alcohols with lower boiling points to stack at the top of your column as efficiently. This can make for smearing.
A dephlegmator styled condencer that was capable off 100% reflux just below your take off lateral would be awsome."
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Rank: Advanced Member Groups: Registered
Joined: 8/17/2008(UTC)
Posts: 424
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Sparky, Here's what I'd do. Instead of drilling & placing tubes I'd use a double coiled copper tube with copper pot scrubbers stuffed in the center. Inlet & outlet could just pass through the rubber plug in the top. You can find a bunch of info on these coils over at homedistillers.org The boka-bob boys use these
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Rank: Junior Member Groups: Registered
Joined: 12/10/2010(UTC)
Posts: 70
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What I was thinking about was putting a fitting in the side where I could put a single cooling probe in the column when I wanted to use a reflux process and take it out when i'm not. If i'm running chilled water wouldn't a single probe be enough for the reflux action?
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Rank: Advanced Member Groups: Registered
Joined: 8/17/2008(UTC)
Posts: 424
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Maybe, but even with a lot of packing I'd wonder about the thermal dispersion from only a single tube. Still think a coil dropped down the top w/packing in the center would be a good solution that would require no fab, other than tube bending. If you weren't happy with the performance then you've not made any changes to your column and can easily try another method.
Besides, with an insert-able coil you could have long feed lines & try out the various depths you marked on your picture
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Rank: Junior Member Groups: Registered
Joined: 12/10/2010(UTC)
Posts: 70
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I am going to have to do some figuring on the coil, I like that idea though. It is going to be very tight quarter to get it in.
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Rank: Advanced Member Groups: Registered
Joined: 8/17/2008(UTC)
Posts: 424
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look over on homedistillers.org especially the bokabob designs. It has a drop in coil & I've seen posts on how to bend the coils properly
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