Stainless Steel Wiped-Film Molecular Distillation Machine

The AV-F220S is a pilot-to-production scale wiped-film molecular distillation system engineered for high-purity separation of heat-sensitive and high-boiling-point compounds. Operating under deep vacuum (<10 Pa), it achieves gentle evaporation at low temperatures with residence times of only a few seconds — making it ideal for essential oil purification, CBD/hemp distillation, flavor and fragrance concentration, and pharmaceutical intermediate recovery. Built with 304/316L stainless steel and a PTFE-sealed vacuum path, the unit delivers consistent, scalable performance from pilot trials to light production. With a 220 mm inner diameter evaporator and a processing capacity up to 15 L/h, the AV-F220S is the ideal choice for medium-scale processing.

Key Features & Advantages

• 304/316L stainless steel construction — corrosion-resistant, durable, and GMP-compatible.
• PTFE sealing system maintains ultra-high vacuum integrity (<10 Pa) for low-temperature operation.
• Wiped-film (short-path) design minimizes thermal exposure; typical residence time is only a few seconds.
• Fully automated operation with auto-feed and auto-collection for continuous, unattended runs.
• High-torque 120 W drive motor with variable speed up to 450 rpm ensures uniform thin-film formation.
• Large 0.50 m² evaporation area delivers processing capacity up to 15 L/h for medium-scale production.
• Modular, plug-and-play configuration — easily scaled up to larger series for commercial production.
• Integrated cold trap and cooling unit protect the vacuum system and improve recovery rates.
• Optional external condenser and customized packages available for specific process requirements.

Structure Diagram

• The AV-F220S consists of a feed vessel, a motorized wiper assembly inside a heated evaporator column, an internal condenser, light and heavy fraction receivers, a cold trap, and a vacuum pump station. All wetted parts are made of 304 or 316L stainless steel for maximum chemical compatibility.
• Structural Schematic

Working Principle

Molecular distillation — also known as short-path distillation — exploits the difference in mean free path of molecules under high vacuum. In the AV-F220S, feed material enters the top of the heated evaporator cylinder. A rotating wiper blade spreads the material into a thin, turbulent film on the inner wall. Under vacuum levels below 10 Pa, the distance between the heated evaporator surface and the internal condenser is shorter than the mean free path of the target molecules. Light-boiling molecules evaporate, travel across the gap, and condense on the cooled surface; heavy-boiling molecules and non-volatile residues flow downward and are collected separately. This process occurs at significantly lower temperatures than conventional distillation, preserving product quality and yield.

Molecular Distillation Principle

Technical Specifications

Applications

• The AV-F220S wiped-film molecular distillation unit is widely used across industries that require gentle, high-efficiency thermal separation:
• Essential Oil & Botanical Extraction — purification of terpenes, flavonoids, and active compounds from plant material.
• Hemp & CBD Distillation — THC remediation and broad-/full-spectrum cannabinoid isolation under precise vacuum control.
• Food, Flavor & Fragrance — concentration of delicate aromas, natural extracts, and edible oils without thermal degradation.
• Pharmaceutical & Fine Chemicals — separation of high-boiling-point intermediates, AP Is, and sensitive organic compounds.
• Petrochemical & Polymer Recycling — recovery of monomers, solvents, and valuable additives from process streams.
• Cosmetics & Perfumery — refining fragrance oils, absolutes, and cosmetic base materials to premium purity grades.

Typical Application Scenarios

• For more information, custom configurations, or a quotation, please contact our sales team. We offer turn-key solutions including vacuum pumps, heating/cooling circulators, and full automation packages.