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After a lot of reading here and elsewhere as well as a few offline discussions, here is my 1st stab at how i can fairly quickly develop a proof of concept for a continuous stripper.
My objectives are to develop a low cost proof of concept largely utilising existing equipment to learn more on building and operating a continuous stripper as I am considering one for our upcoming distillery. I am looking to get 30-40% low wines out which will be loaded into a spirit still for a batch run to produce the final product.
I am a big fan of the kiss principle, eg keep the feed rate constant at a known temp, thereby allowing only a single control variable. You will note no wash preheaters again that's part of the proof of concept / Kiss which can be added later once I have some basics locked in.
For the POC, the wash heater will be my old boiler, the steam generator will be my existing keg boiler. The PID control loops are on my brewery control panel. I will need to make the wash heater return pipe, the steam generator waste overflow pipe as well as the sections for the wash injection and bottom temp monitoring.
The diagram only shows a packed section below the wash input as a 10% input has a vapour of 55%. Further plates above the input is likely to drive up the output ABV which is not what I want. i can always add plates or more packing below the input if I find I'm loosing alcohol out the bottom of the column.
My end goal is learn from this POC to develop a system to be able to process 2000l of 7-10% wash to produce around 500l of 30-40% low wines in 7 hours. i envisage that system would have wash preheaters, as well as a more instantaneous wash heater (a rims tube ?) and have a different steam source such as the one @TheMechWarrior has detailed previously. However at the moment I'm trying to put together the concept cheaply to learn.
I look forward to hearing your comments and suggestions eg anticipated throughput as I will be running a 4" column with a 6kW element in the steam generator.