The working principle of fractional distillation systems
Heat sensitive products having closer boiling points of the lighter and the heavier fraction are difficult to separate in single stage systems.
The combination of packed fractional distillation columns with thin film or wiped film evaporators as reboilers, improve the separation of such products. The larger number of theoretical stages in the fractional distillation column allows good product yields and purities. The low residence time in the reboiler as well as the low operating pressures avoid thermal degradation of valuable products.
The purification of flavour and fragrances, special nutritional products, Omega-3-fatty acids, heat instable fine chemicals or pharmaceuticals are some application examples for this process solution.
