FT Technologies – Short Path Distillation
FT Industrial has developed the RM series of Centritherm evaporators specifically for short path distillation (also known as molecular distillation / evaporation). Short path distillation covers a range of applications not possible in traditional evaporation units. Specifically short path distillation requires high temperature and high vacuum operation. This RM series of Centritherms have been designed to meet the requirements of short path or molecular distillation, including a unique internal condensing system.
The FT Industrial Centritherm is a thin-film, single-effect, spinning cone evaporator. It operates under vacuum, offers an exceptionally short residence time (approximately 1 sec over the heating surface) and a very small hold up volume.
All this results in minimal thermal impact on the product, the ability to process viscous products and a high degree of processing flexibility. It is ideal for short runs of different products, especially high value products, as there is minimal product loss at the end of the processing run.
CTRM – Advantages
Very thin film
The Centritherm uses centrifugal force to create a thin film of product on a conical heating surface. The film thickness can be measured in fractions of a millimeter resulting in a rapid transfer of heat energy and hence effective evaporation of the volatile (low boilers) material. The film developed is much thinner and more evenly distributed than traditional wiped film evaporator units.
Short residence time
The use of centrifugal force to evenly distribute a thin film results in residence times on the heating surface of typically less than one second. This is substantially shorter than other forms of thin film evaporators. It compares with residence times in the order of 15 to 20m seconds for vertical wiped film short path evaporators.
Low thermal impact
Due to the very short contact time with the heating surface the thermal impact on heat sensitive products in minimal. Even when working at the relatively high temperatures required to separate some higher boiling compounds the impact on the product is minimised.