I finally have all this together and am ready for a test run.
Here are the 3 main components,
LP gas boiler,
The boiler will be outside and the tank and still will be inside for safety.
This heats up water that will circulate through the tank that has the mash.
I am able to get a clean 40 - 50% ethanol mixture made from waste beer for about $ 1.70 / gallon locally.
That is going to save a lot of time and effort as compared to fermenting it myself.
I got the 75k btu boiler off Craigs list for $ 250.00
100 gallon Mash tank,
I made a 1" thick aluminum cap that bolts down tight on top of the tank.
You can see the red PEX tubing lines that go between the boiler and the tank.
There is 150' + of the same PEX tubing coiled inside the tank that will transfer heat to the mash.
It takes 173 * to boil off Ethanol.
I got two of these tanks from a farm supply for $ 100. each. They are a low grade stainless.
The Ethanol steam comes in the base of the still and rises up though a bubbler section about 7" deep that is packed with copper pot scrubbers and then up though 600 + marbles to get to the upper section that has a 1/4" copper condenser coil. The Ethanol drains off the 1/2" copper tube from the upper section. This should make 95 - 96% Ethanol.
The principal is that as the steam rises up though the column water vapor collects on the marbles and falls back to the bottom where it drains off.
I made this a year ago and it has been a conversation piece up to this point.
I have about $ 350. into materials for the still.
This has been a fun project.
Stay tuned for a video hopefully next week.