A fun LM design or am I an idiot?
Posted: Tue Nov 28, 2017 10:53 pm
I’m looking at my first build in the next few months and am thinking along the lines of a liquid management still. I want to achieve azeotrope at a sensible rate but I want to do something a bit fun. Would this work?
From what I can tell, the job of the column head of a liquid management still is to condense the gas into a liquid. Some of this liquid gets tapped off but it is the head’s job to reflux the rest back down the middle of the column into the packing.
Other than that, it seems to be all about looking cool. And in my view, the best looking ones are the glass ones where you can see it work.
I'm thinking of building a 140cm x 7.5cm column with a head that is a 18cm x 18cm glass cylinder vase inverted over an inverted condensing coil sitting on a stainless steel bowl with a hole cut in the middle to go around the top of the column. Since liquid is only formed on the condenser, it will all get collected in the bowl around the column. The product is collected from the bowl via a valved pipe and the rest of the liquid falls down to the middle via tabs around the rim of the top of the column. The vase will be held down via straps going over the top to the edge of the bowl. I’ll need to vent it somewhere – maybe by a little bend in the bowl under the jar.
It should be fairly simple to build, even simpler than a boka. Cut and bend the tabs on the top of the column. Cut a hole out of the centre of the bowl for the column. Cut two holes for the condenser and one for the product pipe. Wrap the condenser (big diameter so should be easy). Braze in the condenser and product pipes to the bowl. Braze the bowl onto the column. Sit the jar on the bowl and strap it down. Make some alcamahol.
From what I can tell, the job of the column head of a liquid management still is to condense the gas into a liquid. Some of this liquid gets tapped off but it is the head’s job to reflux the rest back down the middle of the column into the packing.
Other than that, it seems to be all about looking cool. And in my view, the best looking ones are the glass ones where you can see it work.
I'm thinking of building a 140cm x 7.5cm column with a head that is a 18cm x 18cm glass cylinder vase inverted over an inverted condensing coil sitting on a stainless steel bowl with a hole cut in the middle to go around the top of the column. Since liquid is only formed on the condenser, it will all get collected in the bowl around the column. The product is collected from the bowl via a valved pipe and the rest of the liquid falls down to the middle via tabs around the rim of the top of the column. The vase will be held down via straps going over the top to the edge of the bowl. I’ll need to vent it somewhere – maybe by a little bend in the bowl under the jar.
It should be fairly simple to build, even simpler than a boka. Cut and bend the tabs on the top of the column. Cut a hole out of the centre of the bowl for the column. Cut two holes for the condenser and one for the product pipe. Wrap the condenser (big diameter so should be easy). Braze in the condenser and product pipes to the bowl. Braze the bowl onto the column. Sit the jar on the bowl and strap it down. Make some alcamahol.