DESTILLIERMEISTER JUMBO E7448 Premium-Plus - Model for external steam injection

DESTILLIERMEISTER JUMBO E7448 Premium-Plus - Model 2026 – for external steam supply
Optimised distillation unit for steam distillation to extract essential oils

Essential oils via steam distillation. The DESTILLIERMEISTER E7448-Premium-Plus Model 2026 distillation unit is optimised for the extraction of essential oils. It has a raw material capacity of 48 litres, which can be further increased by 12 litres in this version. Essential oil extracted using steam entrainment distillation is of a particularly high quality, as this process keeps the temperature in the feed vessel below the boiling points of both water and the oils, thereby preserving the essential aromas. In particular, the stainless steel distillation units in the premium models of the DESTILLIERMEISTER E-Series feature a pressure-reducing pre-condenser, ensuring that these stills achieve a particularly high product quality. After the oil-bearing hydrolates have been condensed in the pre-condenser, the downstream high-performance cooler cools the essential oils to the desired temperature.

A steam output of between 9 and 12 kW is required for an optimal energy supply. To achieve this output, a heating capacity of between 23 and 30 kW would be required at an efficiency of 40 per cent. It is difficult to provide this heating capacity via the boiler base alone. For this reason, the boiler in this configuration has also been fitted for steam supply from an external steam generator. This steam generator should supply 15 to 20 kg of saturated steam per hour. This can be either a steam generator or a water boiler with a larger base diameter, from which the steam is fed into Kettle 1 via a flexible hose. To ensure that the efficiency of the fed-in steam is not reduced too significantly, the steam is fed through a diffuser connected to the ball valve.

DESTILLIERMEISTER JUMBO E7448 Premium-Plus - Model 2026:

• Sturdy, thick-walled water/steam boiler made from 18/10 stainless steel with a three-layer thermal base: 25 litres. The boiler has a 3/4‘ or 1’ ball valve for the steam supply. This ball valve is secured with a screw connection, meaning it can be removed. Steam enters the kettle via a diffuser to reduce energy loss during inflow.
• Steam-dynamically optimised plant basket: 12 litres,
• 3 plant basket extensions: 12 litres each
• Spherical hood to reduce drip-back losses,
• Insulated riser pipe to prevent premature condensation,
• Pre-condenser to reduce pressure and temperature, thereby preserving the essential aromas,
• High-performance counter-current cooler,
• Cooling system mounted on a variable stand, allowing the still to be reloaded independently of it.
• Ball valve and diffuser for external gas injection.

Structure

1. Kettle with ball valve and diffuser for steam injection, volume 25 litres. If the kettle is to be heated directly initially, the extra volume mentioned above cannot be utilised within the kettle. The maximum water capacity is then approximately 13 litres. However, the boiler must then be heated to a minimum of 15 kW.
   
2. Lower herb basket with a large opening ratio, 12 litres. For finely chopped herbs, the foldable sieve 18 can be inserted. However, this should be avoided where possible so as not to disrupt the steam dynamics.
   Generally speaking, even finer cuts can be placed in the basket because the herbs interlock with one another. Any plant parts that fall through at the start can be collected and refilled at the top.
   1. Permanently fitted stainless steel analogue thermometer, 0–120 °C, accuracy class 1 – easy to read.or with fine sieve.

1. Plant basket extension without base, 12 litres. Up to 4 such extension units can be used with fresh plant material and 3 extension units with dried plant material. This extension can be assembled using the clamping fasteners 13 to form the 2-stage model E5024-Premium.

1. Second plant basket extension without base, 12 litres.
2. Third plant basket extension without base, 12 litres.

1. Distillation head. The sealed screw nipples are prepared for various possible optional applications (pressure measurement, additional temperature measurement, etc.)
   1. Screw connection for the rising tube (7.), 1”.
   2. Stainless steel analogue thermometer, accuracy 1 degree.
      

1. Insulated rising tube with elbow bend.
   1. Screw nipple for connection to 6.1, 1”.
   2. Screw nipple for the pre-condenser (8.), 3/4”.

1. Pre-condenser for condensing the water vapour–oil mixture. Cooling length at least 120 cm.
   1. Screw connection at 7.2, 3/4”. By turning this thread, the angle of the long leg is adjusted so that it can be connected continuously to the high-performance cooler 9. The support tube 11. is pushed through the cross-sleeve 12. for support and secured with the wing nut.
   2. Double-walled tube comprising a 28 mm outer tube and a 22 mm inner tube. Cooling water flows in counter-current between the two tubes, thereby absorbing heat. Most of the distillation vapour is condensed within the inner tube, thereby reducing its volume.
   3. Cooling water inlet from the cooling water outlet 9.4 of the main cooler via hose 10.
   4. Screw nipple for draining the hot cooler waste water.
   5. Screw nipple for connecting the high-performance cooler (9.), 1/2”.

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1. High-performance counter-flow cooler for cooling the pre-condensed hydrolate, extended to a length of approx. 6 m,
   1. withscrew connection for connection 8.5, 1/2".
   2. Double-walled tube, outer jacket tube 22 mm external diameter and inner core with 15 mm external diameter.
   3. Cooling water supply, 1/2”
   4. Cooling water outlet, 1/2".
   5. Distillate outlet.

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1. Hose for connecting 8.3 to 9.4 for the cooling water supply to the pre-condenser.

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1. Support tube for holding up the final cooler (see 9.).​​​​​​​
2. Cross-couplings for erecting the system using 11.
   1. 2 cross-couplings for connecting the support tube 11 to 2 points on the main cooler 9.​​​​​​​

1. 6 clamping fasteners with stainless steel straps for securing a system with 2 plant baskets.
   
2. 2 x 6 extensions for operating the system with 3 or 4 plant containers.

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1. 8 turnbuckles for bundling the aroma baskets.

1. Load-bearing tripod for secure assembly of the system. The cooler system must be self-supporting without the kettle.
   1. Legs; these can also be screwed securely to the floor. However, no fixing parts are supplied for this purpose.
   2. Adjustment lever for spreading the legs.
   3. Pipe sleeve.
   4. Adjustment lever for height adjustment.
   5. Height tube for extending or retracting within the pipe sleeve.
   6. Adjustment wheel for rotating or moving the lever tube 16.7.
   7. Lever tube.
   8. Adjustment lever for the sleeve width. The pre-condenser is attached to this sleeve.
   9. Small tools tray.

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1. Wheeled base with lockable castors for rolling the still system out when refilling the distillate.

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1. Foldable sieve with fine perforations, for use when distilling finely chopped plants. Please note, however, the restriction described under point 2. When in use, this sieve is unfolded and placed in the lower plant basket (see above).

Further notes

Stability when refilling the unit

This unit is optimised so that the base of the plant basket does not interfere with the steam dynamics and the pressure loss caused by the reduction in cross-sectional area leading to the cooler is minimised. The plant basket extensions are designed without a base to prevent any condensate loss when the plant capacity is increased. This prevents a rise in pressure within the boiler and the resulting steam superheating, which would lead to the destruction of heat-sensitive essential aromas. This has been achieved through the high permeability of the first basket base and the pre-condensation of the oil-laden steam in the pre-condenser. The steam is fed into the pre-condenser with only a slight reduction in cross-sectional area and is cooled for steam condensation, so that the actual high-capacity cooler is fed mainly with hot, condensed hydrolate. Consequently, the main cooler no longer causes any pressure loss.
Our own investigations using a test plant optimised in this way have shown that the differential pressure relative to the ambient atmosphere in the unfilled plant is less than 10 pascals, whereas prior to optimisation it was over 1,000 pascals. This represents a significant improvement, and the technical conditions for steam distillation are now optimal.
When loading the system with plants, care should be taken to ensure they are only loosely packed. Under no circumstances should the plants be compacted, as this can disrupt the steam dynamics. The ideal filling level of the plant baskets should be determined experimentally. With sufficient steam flow rate using fresh plants, it has been found that 4 to 5 basket units are ideal.

To seal between the individual pots, fit the supplied profile gaskets onto the pot rims so that the short lip is positioned on the outside of the pot rim. Place the plant baskets on top, ensuring they are level. To allow the steam dynamics to develop sufficiently during direct heating, the water boiler should initially be filled with no more than 15 litres of water. This water is sufficient for at least 3 distillations of up to half an hour each.
The Premium-Plus Model 2022 is already fitted with a 1-inch inlet tap and features an internal diffuser steam inlet device to direct externally generated steam into the boiler with minimal loss of efficiency.

Furthermore, it is recommended that the plant containers – or at least the helmet – be insulated, as oil is lost through condensation due to cooling. Insulation largely prevents this. If an external steam supply is used, the kettle should also be insulated. In the simplest case, insulation can be achieved by wrapping the kettle in thermal blankets.

Note:

This still may also be used legally by private individuals in Germany, provided it is not used to produce alcohol. However, it must be registered, as the boiler has a capacity of more than 2 litres.

GPSR notes and manufacturer’s specifications