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I was wondering if it were a good idea to send vapour back from a plated column back into the boiler to then be redistilled over the plates again.
I was thinking at the top of the column you could have a 3-way valve at the top of the column to direct the vapour to the condenser or back into the boiler.
I didn't know if you could then potentially create a more neutral product in a single run, depending on how long you run it for. E.G. I have 8 plates, if I could send it back into the boiler could it potentially run over the 8 plates another 2-3 times meaning it ran over 16-24 plates?
I know you couldn't guarantee all vapour ran over the plates X times, but could the principle work to make a clean product?