Be part of our community & join our international next generation forum now!
I am designing my vodka column to cope with a low ceiling (11'9") and came up with what might be a looney idea. I am very interested in any thoughts you all have.
The goal is to be able to charge my 300 gallon still with 270 gallons of all-grain wash and go straight to a neutral 95+ in one run, and in under 12 hours, not counting warm-up.
I would run an 8" SD column on top of my 300gal boiler - 4 bubble plates, then a packed section, then dephlegmator. After dephlem, 180 bend, taper down to 2" TC pipe, and run straight down into the top (the fill port) of a smaller pot/thumper back down at floor level. The thumper will be filled with water sufficient to cover its electric immersion element. The thumper has its own 4" SS wool packed column about 100" tall, dephlem, condenser. The piping between the first dephlem and the thumper would be well-insulated, as would the thumper and packed column sections.
I have a controller that will adjust the 8" dephlem on the big still to maintain a set temp in the vapor above the dephlem (around 175F, but will require experimentation). I'd also maintain the water temp in the thumper at a set temp (somewhere between 173F and 212F, but will require experimentation). The idea is that vapor doesn't condense (or doesn't stay condensed for long) in the thumper, but is fed into the second column with already high ABV, and at a very even and controllable temperature. There would be a lot of experimentation required on how to run it - heat input to big still, output temp of first column, temp of thumper water...
Is this nuts? Do you think the second column has to be 8" as well, I was going to use 4" there because I already have it, but I'm not sure how much it will constrict my output rate.
Any thoughts are appreciated.