Does anyone currently use a 6 "or 8" in flute

[harley03]

"Does anyone currently use a 6 "or 8" in flute performance that can verify the product flow and the strength, purity at a fixed number plates and how much power 6" or 8" required."

Cheers

[Prairiepiss]

I haven't seen one around here. The rednose rocket is the only one I can think of. And he is no longer on this forum. MR was working on a 6" packed column. But like I said I has not seen any plated columns of that size. Doesn't mean they aren't out there.

[Uisge_a_Ghlinne]

I too am toying with the idea of a 6 inch flute and would be very interested in real world figures. The beast that you are building harley is very impressive although I will probably go down the Stainless steel route as that diameter of copper will require a new mortgage! I first have to learn to TIG weld so it may be some time before I start. I only wish I could source about 1.5m of 6 inch copper but its like gold dust here.

[harley03]

My 8 "and 12" columns are both soldered together in the back with plumbing copper solder same as Plumbers use and it works great nice to work with, requires no flux, etc., just to run the firm it takes BIG Very nozzle and gas .... My columns are rolled out from a large copper plate...

Rolled and soldered together with copper solder in the back, so it is possible theoretically to roll 100cm big columns in this manner if you have a enought large copper plate ...my copper plate is 1,5mm thick for column and plates..

Go to a sheet metal worker or a mechanical workshop and hear how much money they should have to roll a copper plate in the right girth and length to you and get 6 "ferrules and use large hose clamps that you put around the plate over the ferrules when soldering with pure plumbing solder together the rolled plate.
This was my only way to gets this size of columns here in Sweden becouse we dont have so large round copperpipe...

We put all the plates first on a threaded rod in the column, and then we put hose clamps around all plates also ferrules, then it's just to throttle up with the largest gas nozzle as you can get, and then so fine soldered it when the hose clamps was removed and also the hole for the threaded rod was soldered back in the plates ..

Cheers

[Uisge_a_Ghlinne]

I had thought about rolling my own tube but it has its own challenges. How did you find the work? Did you anneal the copper plate a lot before getting the tube shape right? Lots of questions are running through my head just now.

[harley03]

We drove with standard 1.5 mm copper plate and it was no problem to roll it in a winder for it was the cheapest, but it is perhaps simplar with one that has been ignited ...
We also made a depression in the joint so the inside was completely smooth, just like you do when you change a screen edge on a car in order to reduce the consumption of putty ...

Check with beaters and mechanical workshops for this should be easy for them to do, it is in Sweden, anyway ...

While you roll a sheet, so take the proper size ... Bigger is same as faster but you need a lote of more power....if you go for sieve plates..

but buy ferrules BEFORE the judgment is available only in even inches, inches 4.6.8.10.12 what I know.

We have brazed all copper with pure plumbing plumbers solder intended for drinking water pipes ( only 2-4% silver in it) and then no need for acid flux,( it is almoust same colur than pure copper allso) but when we joined copper to ss so we used 100% pure silver solder with flux of each pole and they tines were ridiculously expensive, one-half kg of pure silver cost a fortune ...

And the taste is good with copper for removing sulphides or neutralize them SS seems to reinforce them, so great is the taste difference between these two materials

The color is important fore me becouse a love copper and a relly dont like SS
Because I want it to taste good


Cheers

[mash rookie]

Vapor speed required with perforated plates typically is 15 -18 inches per second. If perforated area is too small or down comers are too small it will run at lower range of vapor speed. If they are too large you will need more to keep them flooded. You will want power enough for 20 inches per second for stacking the plates and speed runs where lower ABV is desired.

So for an eight inch you are talking 16,000 – 22,000 watts or 55,000 – 75,000 BTU's. Six inch, 9000 -12,500 watts or 30,000 – 42,500 BTU's
But... the greater the surface area, the greater the heat loss on the column wall.

I agree that 20 liters an hour is a good expectation.

Mash Rookie

[harley03]

This is what I'm building now!

I have 1.5 mm hole in 4mm square which is about 1400-1440pc on a 8 "plate - 203mm and 28mm rebounds sticking up between 12-14mm and I have 20pc plates high and access to 33 000watt power which is fully adjustable, what do do you think about this combination?
My distans betven eath plate is 12,5-14cm.

My goal is over 96% in strength and so clean you can only get it ..and at least 20 liters per hour.

If one is to be wise after the event, I have the power to drive a 10 "version in the sieve plates .... and my boiler capacity is 500 liters, but next time i build bigger if this working good.. I like to build...

I also agree on and build a 8 "- 203mm whiskey column and it shall be in 4pc sections with a gap of 150- 200mm between the plates and 19pc bubbelcaps from still draggon and also his downcomers, it will be interesting to compare the performance between these two 8" columns.

OLDDOG ! What are you thinking about this, you are the one that is "father" to all flute and what is best for "only" whisky, sieve plates eller bubbelcaps...

Cheers

[mash rookie]

This is what I'm building now!

I have 1.5 mm hole in 4mm square which is about 1400-1440pc on a 8 "plate - 203mm and 28mm rebounds sticking up between 12-14mm and I have 20pc plates high and access to 33 000watt power which is fully adjustable, what do do you think about this combination? That sounds great. You have done your research.

My distans betven eath plate is 12,5-14cm.
The distance sounds correct. It does not need to stay square as diameter increases. Only high enough to avoid entrainment. (Contamination of fraction by splashing plate above)

My goal is over 96% in strength and so clean you can only get it ..and at least 20 liters per hour. I have not run 20 plates. If you can hit azeotrope with a low reflux ratio you should be able to reach that speed. My math shows it will be about 12-15.
Every column diameter has a speed that it wants to run at. Four inch is about 3000ml an hour. plates or packing efficiency will determine ABV at that speed. Currently with my 4"test Column I am hitting 93-94% at 3000 ml / hour. Increasing RR to hit 96.5% reduces speed to 1500 ML hr.

If one is to be wise after the event, I have the power to drive a 10 "version in the sieve plates .... and my boiler capacity is 500 liters, but next time i build bigger if this working good.. I like to build...

I also agree on and build a 8 "- 203mm whiskey column and it shall be in 4pc sections with a gap of 150- 200mm between the plates and 19pc bubbelcaps from still draggon and also his downcomers, it will be interesting to compare the performance between these two 8" columns.

OLDDOG ! What are you thinking about this, you are the one that is "father" to all flute and what is best for "only" whisky, sieve plates eller bubbelcaps...

Cheers