Concentration
Liquid ethanol or aqueous extract is concentrated by evaporation of water or ethanol. The concentrated botanical extract can be used as the final product form — dense/soft extract — or transferred to the spray dryer unit for powder production. All evaporators comply with ATEX directive and can work with water or ethanolic extracts.
Concentrated botanical extract
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Dense / soft extract
Concentrated botanical extract is obtained, which can be the final form of the product (dense/soft extract).
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Spray dryer unit
If the final form of the product is powder the concentrated extract is transferred to the spray dryer unit.
Falling film vacuum evaporator
Falling film vacuum evaporator – a solution dedicated for continuous evaporation under reduced pressure.
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The source of energy necessary for the evaporation of water is steam which is also under reduced pressure. Thus, the heating medium supplying the installation has a temperature of 45-65°C (water vapor pressure 0.1-0.25 atmospheric pressure). By using an energy source with such a low temperature, we are sure that all thermolabile active substances will be preserved
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Water evaporation capacity ~1500 kg/h
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The density sensor on both the product and the condensate continuously provides information about the evaporation streams (especially handy during evaporation of ethanolic extracts)
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Possibility of concentration at a pressure below 100 mbar, resulting in the fact that the temperature of the evaporated extract does not exceed 40 °C
Conical vacuum evaporator
Conical vacuum evaporator – batch type evaporator.
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Equipped with a low-speed scraper type agitator, it allows the evaporation of water/ethanol from high viscosity extracts
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02.
Possibility of evaporation at a pressure of 50-150 mbar abs
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03.
Water evaporation capacity ~200 kg/h
Two-effect vacuum evaporator
Two-effect vacuum evaporator – the second stage of evaporator use vapors for the first stage to supply the energy necessary for phase change. This approach minimizes the energy necessary to evaporate water/ethanol from the extract.
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01.
Possibility of evaporation at a pressure of 150-250 mbar
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02.
Water evaporation capacity ~650 kg/h
Pilot scale vacuum evaporator
Pilot scale vacuum evaporator – batch type, equipped with a scraper stirrer
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Possibility of evaporation at a pressure of 100-150 mbar
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Water evaporation capacity ~80 kg/h
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