The BDC has a variety of distillation and evaporation technology at its disposal. This ranges from a standard packed column to a single-stage thin-film evaporator and a multi-stage thin-film spinning cone column. This allows the BDC to process a wide range of materials including heat-sensitive natural products found in high-value biomass streams. All the systems operate under vacuum, with the lowest achievable vacuum ranging from 10 – 70 mbar depending upon the system in operation.
Currently the BDC operate:
Flavourtech Centritherm (50 kg/h) – ATEX rated short path distillation
This short-path evaporator operates on a single spinning cone to create a thin film of only 0.1 mm thick. With a residence time of approximately 1 second across the heating surface this makes this particularly suited for the concentration of heat-sensitive, valuable and viscous products. It offers an exceptionally short residence time, less thermal impact and much greater processing flexibility than traditional rising or falling film evaporators.
The Centritherm is known to commercially process a variety of heat-sensitive materials (such as oleoresins, blue-green algae, beetroot, carrot or blueberry) in the production of natural dyes and the concentration of natural juices.
To date, the BDC has used the Centritherm to modify the odour of a natural product by removing the highly volatile malodourous compounds.
Flavourtech spinning cone (1000 kg/h) – ATEX rated multi-stage distillation column
Belonging to the same class of mass transfer devices such as packed-, plate- and bubble-cap columns, the spinning cone uses gentle mechanical forces to enhance liquid-gas contact by using centrifugal forces to create a thin liquid film. The design of the spinning cone enables it to process a range of materials including highly viscous liquids.
The spinning cone column is widely used in the food, beverage and cosmetic industry for aroma or flavour management in products such as coffee, juice and body creams. In some wine industries it is used to remove high levels of alcohol where the wines produced can reach over 15 %.
If you would like to learn more about our distillation columns, please speak to Mark.