Molecular Distillation is a type of short-path vacuum distillation, characterized by an extremely low vacuum pressure. It is a special liquid-liquid separation technology, which is different from the traditional distillation by boiling point difference separation principle, but by different substances molecular movement of the average free path difference to achieve separation.
How does it work?
Feed liquid is delivered from the a feed flask into a columniform evaporation section, getting heating, on the outside, (circulating hot fluid jacket type), and a slotted wiper mechanism forcing liquid around and downward in a thin film on the inside. In the center of the body is a wiped film evaporator with internal cooling condenser, providing a short path for vapor molecules traveling from the heated surface to the condenser surface.
During the itinerary downward, lighter (lower boiling point) fractions of the liquid begin to vaporize, move to the internal condenser and condense, falling down as a liquid into a vessel that catches and separates the distilled liquid (cannabinoid). Heavier residue material (CholorophyII, salts, sugars, heavy wax fractions) does not evaporate and instead travels through the still body and flows into a different receiver flask.
Application
Molecular distillation technique has been successfully utilized in many areas, such as foods, flavors, cannabis/hemp, garlic oil, cod liver oil and chemical and pharmaceutical industries.
In the cannabis distillation process it takes advantage of the melting points of cannabinoids. By using molecular separation, you can separate the THC/CBD from the terpenes, lipids, impurities and solvents, leaving you with an odorless and clear golden distillate.