Pictures of the microstill

The microstill is complete! After publishing the drawings and the bill of material, a few days ago, I assembled the microstill. To be honest, the assembly was faster than expected. It took only 9 hours in total. Now, I cannot wait for the first runs to be completed.

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Bill of Material ver 0.1

All drawings and the bill of material are complete! The individual drawings are linked to the corresponding module at the main page. The complete BoM as per today can be found below. Module Item Description Quantity Unit 1 Electrical Enclosure 200x120x75 mm 1 pcs 1 Cable gland M25 1 pcs 1 Cable gland M16 3 […]

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Quince Eau-de-vie – Recipe of the Month

This ancient fruit tree, with broad and extended leaves, has been cultivated for more than 4000 years. Its large pink and white flowers can reach up to 5 cm and blossom in May. Its yellow and fleshy fruit is very fragrant. The quince fruits reaches maturity at the end of October. Its seeds have long […]

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Recovery Rates

Recent activities focussed on the recovery rates. What percentage of alcohol in the wash will be distilled? As a reference, I found a table in a book by Malle and Schmickl. They were using a pot still. To make the individual runs comparable the vapor temperature was measured. In general at a vapor temperature of […]

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Energy balance

As outlined in the post on process design the microstill recycles the heat. The hot product vapor condenses in the heat exchanger and the wash is preheated. The energy is transferred from the vapor to the fresh wash. No additional coolant is required. The wash serves as coolant. What interested me is the balance between […]

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Documentation updated

Reflecting the latest developments, the block diagram and the PID have been updated. Actually the entire still is now significanly smaller and less complex. There is only need to control one pump and the heater. For reasons outline before, the heat exchanger and a second pump are not required. I also posted an update of […]

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Process Design

Having studied the process in depth, the initial calculations required some adjustments. The basic principles of distillation are outlined somewhere else. I did find the explanaitions by Zymurgy Bob very helpful. If I assume a 10 % wash to be distilled, the wash with start to boil 90 °C. The vapor that is forming will […]

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Quinces Harvest Processed

This year seems perfect for quinces. The trees are loaded with fruits and my harvest was about 30 kg. That was quite something, since last year most quinces started rotting at the trees. This was probably due to the wet September in 2015. For years I am preparing a delicous liquor. Friends and family love […]

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