Wiped-Film Molecular Distillation

Pope Wiped-Film Cannabis Distillation & Extraction Equipment

Scalable from 100 Milliliters/day up to 100 Kilograms/hour

After extraction and winterization and decarboxylation, THC, CBD or Total Cannabinoid in extract is typically in the 60 to 70% purity range.  Starting with these feed percentages, you can expect purity from mid-80s to mid-90s in percentage after two still passes using Pope distillation equipment, depending on starting material quality.  Yet greater distillate purity is possible via re-distillation of distillate.

Pope Wiped-Film Molecular Stills (WFMS) are a special type of short-path, molecular distillation equipment. These are continuous mode systems, as opposed to batch vessel distillation apparatus. The diagram below of the cannabinoid purification distillation process illustrates the means of this technology and shows the flow of the feed material and the separation of component fractions within the equipment. The same purification distillation process can be used for multiple cannabinoid compounds including CBD purification and THC purification.

Feed material is delivered from a feed flask into a cylindrical evaporation section, having heating, on the outside, (either electric resistance or circulating hot fluid jacket type), and a diagonally slotted wiper mechanism forcing liquid around and downward in a thin film on the inside. In the center of the body is a closely positioned internal condenser, providing a short path for vapor molecules traveling from the heated surface to the condenser surface. For cannabinoids, the internal condenser fluid must be kept elevated (~70°C) to prevent high viscosity or freeze up of THC, CBD and related components. During the journey 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 well that captures and separates the distilled liquid (cannabinoid) which flows into a receiver flask. Heavier residue material (Chlorophyll, salts, sugars, heavy wax fractions) does not evaporate and instead travels the length of the still body and flows into a different receiver flask. Because of the optimized Pope design, this all happens within a number of seconds, and under vacuum-lowered temperatures, thus minimizing any possibility of product degradation.

Standard Package

  • Standard 2”, 4” & 6” Canna Still complete packages, consisting of always-stocked Pope standard glass parts, peripheral components and controls.
  • Stainless Steel body substitution kits and liquid pumps available.
  • Built, tested, and shipped within 2-5 weeks after order placement.
  • Feed rates from 0.5 to 5+ liters/hr.
  • The original, USA-made classic WFS units since 1976

Turnkey and Multistage

  • For high throughput, high duty cycle industrial production processing applications.
  • Skid mounted, complete and pretested turnkey WFS systems with PLC driven fully automated control systems including advanced data recording and logging features.
  • Multiple stages provide once-through the system operation, consistent control and fine-tuning optimization of overall process, highest product purity, yield and value.
  • Throughputs from 5 to 100+ liters/hr.
  • Fully engineered, built, and tested in Saukville, WI, USA.