These units are necessary for more convenient selection of fractions obtained during the work process.
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The selection unit in the diopter is one of the additional clamp units that allows you to turn your distiller into a full-fledged rectification column. Sold as a complete set or in more economical option- without needle valve, clamp and aftercooler. Specifications: Clamp connection diameter - 1.5" steel - AISI 304 Complete set: Diopter selection unit - 1 piece Clamp - 1 piece Gasket - 1 piece Quick release with internal thread- 2 pcs. Needle tap - 1 pc. Aftercooler - 1 pc. Economy equipment: ..
The selection unit in the diopter is one of the additional clamp units that allows you to turn your distiller into a full-fledged rectification column. Sold both as a complete set and in a more economical version - without a needle valve, clamp and aftercooler.
Technical characteristics: Clamp connection diameter - 2" steel - AISI 304 Complete set: Diopter selection unit - 1 piece Clamp - 1 piece Gasket - 1 piece Quick release with internal thread - 2 pieces Needle valve - 1 piece Aftercooler - 1 piece Economy package: ..
Liquid selection unit. Can be used as a head selection unit for fractional distillation. By adding a sprit cooler to the unit, you will also be able to do a full fractional selection of liquid. The unit has an outlet for a thermometer, which is why it can be used as a mobile drawer for measuring temperature in various parts of the column. Used to work with 2-inch columns.
Thermometer output: through, diameter 6x1mm, it is possible to connect a thermometer or pressure gauge. Liquid outlet tube: Ф6х1mm Characteristics: Connection - 2" clamp .. The steam extraction kit is used to strengthen alcohol vapor during fractional distillation in distillers column type, and allows you to adjust the selection with a ball valve.
By default, the diameter of the outlet is 51mm (2 inches), on request we can make it 38mm (1.5 inches) Contents: - Tee f51mm-f51mm-f38mm - 1 piece -
Ball valve
The head selection unit makes it easy and convenient, compared to the classical method, to select the head fractions during distillation.
To work with the unit you need: 1. Install it in front of the reflux condenser. 2. Shut off the water supply to the main refrigerator or leave a very small stream so that heads can be collected from 2 points. (UOG and main refrigerator) 3. Heat the cube and let the column work for itself for about 20 minutes. 4. Then gradually begin to open the needle valve on the selection unit until droplet selection begins. 5. Select the heads in the column operation mode towards you.
6. After.. The pasteurization tank (CP) is designed to purify alcohol from the head fractions that are formed in distillation column and reflux condenser during the entire rectification process. Installed between the reflux condenser and the packed part of the column.
Connection - 2" clamp Height - 300 mm The CPU is an additional selection device and allows you to select the product at some distance below the top point of the packed part of the distillation column. Preparation for work Install the CPU between the reflux condenser and the upper frame of the rectification column..
Selection unit for 1.5 inch clamp – essential accessory
for rectification, as well as the selection of the head and tail fractions in the distiller. The 1.5-inch glass-type selection unit is designed in such a way that, with a glass inside, the strongest and purest alcohol vapors accumulated, passing through the selection unit itself, settle and exit through a silicone tube connected to the selection unit, from where the purest and strongest product comes out .
Using this device in a column, you can select “heads” and “tails” by adjusting the selection with a needle valve or Hoffmann clamp.
Install the selection unit on the frame, securing it with a clamp. After the selection unit, install an inverted refrigerator that returns the cooled reflux to the column or a powerful reflux condenser (during distillation). Insert a thermometer into the fitting to control the temperature*. Install a needle valve or Hoffmann clamp on the reflux outlet tube through a silicone hose and turn it off completely. Next, start heating the cube (at a temperature on the tank of 60 - 70 degrees, cool the refrigerator as much as possible, directing the flow of water). After the column has warmed up, it needs to work for itself for at least 40 minutes until the temperature stabilizes. Then smoothly open the needle tap, not forgetting to stabilize the temperature, and adjust the selection of heads drop by drop. After selecting the heads, proceed to selecting the body, not allowing the temperature to deviate from the stable temperature by more than 0.2 degrees; with such a deviation, it is necessary to turn off the needle valve until the temperature stabilizes. A constant temperature deviation and the impossibility of stabilizing it at the primary level will inform you about the termination of body selection. For full rectification, it is necessary to equip the device with an aftercooler.
To select goals:
If the reflux condenser on your equipment is at least 200 mm and is equipped with at least 5 tubes, then install the extraction unit in front of the reflux condenser on the frame, securing it with a clamp. Insert a thermometer into the fitting to control the temperature*. Install a needle valve or a Hoffmann clamp on the reflux outlet tube through a silicone hose and turn it off completely. Start heating the cube (cooling the reflux condenser as much as possible, directing the flow of water). After the column has warmed up, let it work for itself for 15-20 minutes, then smoothly open the needle valve and adjust the selection of heads drop by drop, approximately 1 drop per second. After selecting the heads, turn off the tap and proceed to selecting the body according to the classical scheme.
There is also the most advanced head selection scheme; install the device according to the bottom-up scheme:
– column with packed part
– diopter
– reflux condenser
– selection unit
- upside down refrigerator
With this scheme, only high-boiling fractions will penetrate through a very thin cooling supply to the reflux condenser. The refrigerator will cool them and send them out using our device. The diopter in this circuit is necessary to visualize the returned reflux and control the supply of cooling.
Try both options.
To select tails:
Install the selection unit between the cube and the lower drawer. While the column is operating, set up a drop-by-drop selection - approximately 1-2 drops per 3-5 seconds. Control the selection using a tap or Hoffmann clamp. Tailings sampling can occur throughout the distillation.
For installation, do not forget to purchase an additional clamp and gasket!
The selection unit is made entirely of AISI304 stainless steel. Has a two-way 1.5" clamp connection, an outlet tube for silicone hose diameter 8 mm.
* – The product is not equipped with a thermometer!
Manufacturer: Russia
Say “halva” even a hundred times, and your mouth won’t get any sweeter. This old eastern wisdom gave me the idea that it is better to back up words with deeds, and I did t.s. pilot industrial model of MBRK (modular mash distillation column).
Actually, nothing new, just everything was made in metal, tested in a combat situation, a little analysis was carried out and conclusions were drawn.
So, in order.
1. The first hypostasis is the Brazhnaya column.
The illustration shows what it looks like in real life. A short and completely empty drawer made of stainless pipe outer diameter 38mm. It is made in such a way that there is a 1-inch thread on the bottom, and a flange on top for a 1.5-inch clamp. This way it was more convenient for me to place it on the “fruit-grain” cube for working with steam. Of course, the connecting parts can be any other. A “stick” type dephlegmator with a water utilization capacity of 3 kW is installed on the frame through a clamp connection (after assembly, I drove it on water to wash it and find out the main characteristics). The raw material used was a “bourbon” mash made from corn (hence the steam).
During the first haul, the task was not to drive to maximum power(I always work with steam at a power of about 2 kW, sometimes less), speed primary processing and so acceptable. But, in this case, I adjusted the power characteristics to a copper boiler with steam extraction on the 22nd pipe. The whole process, including acceleration of the steam generator and the cube itself, took about 3 hours. After three hours, the output was approximately 5 liters of 45% CC. Distilled without crushing to complete zero in a stream. The solution, of course, is not so great - what can you do, it’s not sugar for you.
Temperature control was carried out based on the temperature in the cube. The outlet for the thermometer on the defa was plugged.
2. Second hypostasis - Distillation column.
A meter drawer with a 3.5 mm SPN nozzle was added to the system used in the first experiment. The drawer is insulated and placed between the empty drawer and the reflux condenser. It’s not shown in the illustration, but in practice I also “insulated” the lower empty drawer by wrapping it in a towel. Actually, it is completely unnecessary for rectification, but I didn’t want to make a special adapter for the cube and I used this drawer as an adapter. A temperature sensor is installed in the def. Heating was carried out by a heating element through a regulator. The selection of exact modes for the column in this experiment was not the goal, so I settled on almost the first acceptable indicators. When the column was operating on its own, the power supply mode was selected at a level of approximately 1200 W (when higher power was supplied, the column began to vibrate slightly), then the column was stopped and a selection dispenser in head mode was also experimentally selected for it. To do this, a thin needle from a regular syringe was inserted inside the sampling tube (see the main illustration at the beginning of the article, point 5). You can try an insulin syringe, but I didn’t have one on hand and I used the thinnest one from a simple 2 ml syringe. It allowed sampling at a level of 100 ml/hour (later it was replaced by a thicker one with a sampling rate of 130 ml/hour).
When the heads were completely selected (according to organoleptics - “by smell”), the column was stopped again to select the dispenser for the “body selection” mode. Due to the lack of a wide selection of needles, a plug was made from fluoroplastic (a material absolutely inert to our products), in which thin drill a hole has been made. After trying several diameters (the choice was also not very wide), I settled on a jet that provided about 700 ml/hour. After this, he resumed the selection and, controlling the temperature in the reflux condenser and the cube and periodically checking the strength of the selection, he selected the body (and the tails also in this mode - after the end of the body selection, the entire selection of the tails took about an hour, although you can switch to a tube without a plug and select fast).
Head-tails from different experiments in an amount of approximately 8 liters of 70% strength. Received 4.5 liters of product with a strength of 97, approximately 450 ml of heads and about 300 ml of tails. There were so many heads due to the fact that the source initially contained a high content of harmful substances.
3. Hypostasis first (part two) - Brass column. During experiments with rectification, a “jet” was tested, which gave a selection value of around 2.1 l/hour with a selection strength of 94.5%. I did not run the system in this mode for a long time to find out the stability of the indicators, but as you can see, NDRF comes out of such a column quite easily and in acceptable (comparable to BC) quantities.
Observations. Firstly, working with a column is quite simple. I specifically gave more or less detailed description actions with it so that you can at least approximately imagine how approximately this should happen when you first start it. In the future, you will select the appropriate modes and intermediate adjustments will become unnecessary. Secondly, the power of a small aftercooler is quite sufficient for operation in the RK mode and absolutely not enough for the BC mode. More precisely, it cannot cope with reliable cooling when drawing more than 1.5 l/hour. Thirdly, when examining the empty drawer after distilling the grain mash, there were no remains of spent grain or other contaminants in it and the resulting SS was completely transparent, i.e. Such a drawer reliably performs its function of protection against splashing.
Conclusions.
Such a design is, of course, more functional than just a copper cylinder with steam extraction. By completely blocking it in the distillation stages, it can also rectify.
And, of course, it is much more difficult to manufacture. If you have TIG welding, metalworking skills and the proper set of materials and auxiliary tool- It’s quite possible to make an ICBM from stainless steel. However, a similar structure can also be made from copper.
As for the cost part. If we exclude from the calculations the need to have equipment and the skills to work with it, then after the latest increase in the price of copper, the cost of such a stainless steel structure is close to that of a copper one ( copper pipes diameters 35 and more bite hard, as do fittings for them) or lower.
I’ll experiment a little more with this design and switch to inverters; I don’t like the situation with the aftercooler during direct distillation. If anyone wants to purchase this kit (can be modified to suit your needs) for a very reasonable price, please contact us by email [email protected]
I continue to think about the topic optimal design apparatus and invariably come to the conclusion that steam extraction is not universal.
First, let me remind you: both types of selection require the presence of a reflux condenser and the return of part of the condensed reflux (as the condensate of alcohol-containing steam is called) back into the column/cube. Only part of the phlegm is selected, forming the final product. You can read about why and why this is done.
During steam extraction, the steam is partially condensed in the dephlegmator and the condensed part is returned to the column/cube, and the non-condensed part passes further to a special refrigerator-condenser, where it is converted into a product and cooled.
In liquid extraction, all the steam is condensed in a dephlegmator, and then in a special dispenser (often called the “Extraction Unit” or UO) is divided into the part returned to the column/cube and the part taken off, which is taken to the after-cooler (in which the product is simply cooled and no condensation occurs - there is no steam).
Judge for yourself - the steam version of selection requires more attention when setting up at the stages of selection of the head fraction and the transition to selection of the main body. Regardless of the type of heating of the cube, accurate and quick setup difficult, and in some variations simply impossible (discrete heaters, gas, short reflux condensers, etc.). Often it is not possible to adjust the amount of head extraction at all to the required low limit. All this affects the quality of the product and its final yield.
And with liquid sampling everything is much simpler and more convenient. The reflux condenser converts all the steam into reflux, which, after passing through the reflux, is divided into two flows - return and selection. And the magnitude of both flows depends on exactly how much product we want to select. Dosing of the selection is carried out purely mechanically - by the size of the hole through which the product is taken (well, or by the frequency of valve opening when using automation). Once we select the “jet” for the required amount of selection, we forever close the topic of adjusting the selection at one or another level. Adjustment with water is not needed at all - the reflux condenser always works “at full capacity”. Power adjustment comes down to two or three values: “head”, “body” and “tails”, or, more simply, “head” and “body” (when using automatics it is more difficult, well, you don’t have to make these adjustments).
Why am I writing these platitudes? Recently, people have begun to buy BCs (classic ones with steam extraction) and add attachment drawers to them, justifying these additional devices with the desire to obtain a higher-quality product. Of course, the drawer can give good separation and will allow for further strengthening of the product in any case (with a corresponding reduction in productivity). But you need to correctly regulate the amount of return and power so that the drawer works in certain modes and without choke. How to do this in the absence of any means of even visual control at the bookmaker? Only by selecting parameters with inevitable losses in time and product. And what about the selection of the head? You can, of course, greatly dilute the SS (raw alcohol or the product of the first distillation without crushing into fractions; working with mash on packed drawers is already irrational - the process is drawn out over time, long-term boiling of the mash is undesirable) and take the head deeper, but this leads to large losses the final product and still does not provide “full guarantees” of quality.
A distiller with steam extraction is also called a fortified distiller. And you need to approach it with the right expectations - straight from the mash you can get strong moonshine with improved drinking characteristics. But moonshine. Actually, for many and in many cases this is quite enough and you can work on a bookmaker without any additional extras.
If you want to take the next step - to also obtain NDRF (under-rectified, i.e. the product is pure and strong, but with traces of the source) or, especially, alcohol, you need to immediately choose a design with liquid selection. It is much easier to immediately buy a dephlegmator-stick for the same money instead of a classic BC (for 38 pipes from 4 thousand rubles, for 51 – from 6 thousand rubles) for a certain power and build an expanded system on its basis.
How to make a distillate selection unit for a distillation column
If you decide to make your own distillation column, you are doing absolutely right. Previously, this mechanism was used only in industrial scale at distilleries. This is due to the fact that the structure occupied several meters in height and was quite voluminous in area. However, progress does not stand still. Gradually, studying the basic mechanisms and processes of rectification, specialists managed to recreate a small copy of the factory sample. A modern distillation column can easily fit in the kitchen of even the smallest apartment, not to mention a garage or a private house. Moreover, the product obtained at the exit of such a device will be no worse than the factory one, and, perhaps, even better. After all, the quality and taste of the drink will depend on you, or rather on the raw materials that you will use to produce homemade alcohol.
Today we will look at how to make one of the parts of a distillation column - a distillate selection unit.
It is not uncommon for people who decide to assemble a distillation column to not have the ability or skills to turn some parts on a lathe. Therefore, we will describe how to make a distillate selection unit at home, using improvised means. For this job you will need the following components:
* Two mandrels with different diameters(you can use bearings of suitable diameter).
* A ball made from a large bearing (if a suitable bearing is not available, any other cone-shaped object can be used).
* Stainless steel plate, up to 1 mm thick.
* Hammer.
* Drill with 7 mm drill bit.
We take the plate from of stainless steel. It needs to be capped. Using a compass, we outline the diameter of our future washer. Draw several circles. We do this in order to be guided by them when adjusting the product. Next, drill a hole in the middle with a diameter of 7 mm. We place the workpiece on the bearing hole so that their center points coincide. On top of this structure we place a large ball, the diameter of which is 15-16 mm. We hit it with a hammer several times. As a result of this, the workpiece will bend, the edges will rise, and the hole will expand. We need to make the edges at an angle that will tend to 90°. To do this, take another bearing (its diameter should be smaller than the first) or a mandrel, place it on top and hit it with a hammer. The mandrel must be taken such that at the end it rests against the ball and the edge of the workpiece at the same time. Thus, it will bead the edge of the sleeve and you will get an almost right angle. Absolutely right angle there is no point in trying.
Next, we cut off the excess metal and file it down. Sew along the markings with 
larger to smaller diameter. As you grind, try the washer on the pipe. In its final form, it must fit into the pipe with interference. The washer should not dangle and, moreover, fall out. Next, we take the pipe that is intended for the column, cut off the sleeve 2 cm with a hacksaw. Cut it straight. In case of unevenness, we smooth it with a file. We use it to remove chamfers. Next, sand the workpiece with sandpaper. We clamp the bushing in a vice and saw the wall on one side. We saw so that the bushing, when compressed, has outside diameter, which would correspond to the internal diameter of the pipe. The sleeve should fit into the pipe with force. Try to make sure that there is no gap at the cut site or 
was minimal. We take the mandrel and, resting against the edges, seat the sleeve into the pipe to the depth we need. Usually this is 25-30 centimeters from the edge of the pipe. Check how tightly the bushing fits. If it’s tight, leave it as is. If there is a gap, it needs to be soldered. To do this, drill 3-4 holes in the pipe in the place where the sleeve is located. The diameter of the holes is 5-6 mm. After that, take the drill twice larger diameter and countersink the edges of the holes. Be careful not to drill through the bushing. We use a heated soldering iron to solder the resulting places, and then check the reliability of the connection. It must be durable and parts must not become loose. Next, you need to install 2 profile bushings (they do not need to be fastened). They will hold on due to the spring properties and tension force. The only condition that must be met in this situation is the fact that during processing the sleeve must obtain the correct circle. After we have assembled and soldered the structure, we drive a support washer on the other side of the pipe. It should be inserted without tension, freely. Next, completely fill the tube with the nozzle.
For those who have access to lathe and skills to work on it, we offer another option for the distillate selection unit of the distillation column. Everything here is much simpler and does not require any special comments. It is necessary to machine the profile bushing so that, as in the embodiment described above,
entered the pipe with tension. We fix it using spot soldering. The resulting product, after you rinse it with warm water, will be ready for use. This is what it looks like this design in finished form:
- Nozzle
- Pipe
- Distillate sampling tube
- Soldering place
- Hole for distillate outlet
- Profile bushing
- Support washer