Molecular distillation equipment is a key technology used in industries such as pharmaceutical, essential oil and cannabis distillation. Among the various types of molecular distillation, short-range molecular distillation stands out for its efficiency and scalability.
Key components of short-range molecular distillation
Feed vessel: holds the feed and promotes a controlled flow rate for optimal separation.
Distillation flask: the container where the raw material is initially filled during the distillation process.
Condenser: the component responsible for cooling the vaporized material back to liquid form through heat exchange.
Evaporator: the central element where the feed is heated and evaporated, thus separating the target compound from the mixture.
Vacuum system: generates and maintains the required vacuum to enable efficient distillation at lower temperatures.

Working principle of short-range molecular distillation
Feed loading: The feed is loaded into a distillation flask and sealed.
Vacuum Creation: A vacuum system is activated to create a low-pressure environment within the distillation system. This vacuum helps to lower the boiling point of the target compound and reduces the risk of thermal degradation.
Heating to vaporize: A heating jacket or other heating method is used to heat the raw material inside the distillation flask. As the temperature rises, compounds with lower boiling points evaporate, forming a vapor mixture.
Separation and condensation: The vapor mixture travels from the distillation flask to the short-range evaporator, where it meets the condenser. The condenser rapidly cools the vapors, causing them to condense back into liquid form.
Collection of the distillate: The now purified condensed liquid is collected in a separate container. The distillate usually contains the desired compounds and is characterized by high purity and integrity.
Residue Collection: The unevaporated residue, which may contain impurities or high-boiling point compounds, is retained in the distillation flask and may be further processed or discarded.


Application of short-range molecular distillation
1. Pharmaceutical industry: We use this technology in pharmaceutical production to purify active pharmaceutical ingredients (APIs) and remove impurities, ensuring the production of safe, high-quality drugs.
2. Essential oil extraction: We use short-range molecular distillation to extract essential oils from plants. It separates aromatic compounds while maintaining their flavor and therapeutic properties.
3. Cannabis distillation: The cannabis industry benefits from short-range molecular distillation for the extraction and purification of cannabinoids such as THC and CBD. It enables the production of pure and potent extracts for medical and recreational purposes.
4. We use this distillation technology in the food and beverage industry to extract and refine flavors, fragrances and additives. It ensures the production of quality products with precise control of flavor and aroma.

Factors to Consider When Selecting a Short-Range Molecular Distillation System
1. Quality and durability: Invest in systems made with quality materials to ensure long-term performance and durability.
2. Temperature control capability: look for systems that offer precise temperature control to maintain optimal separation conditions and avoid overheating.
3. Ease of operation and maintenance: Choose a system that is user-friendly and easy to maintain to ensure smooth operation and minimize downtime.
4. Safety features: prioritize systems with comprehensive safety features, including pressure and temperature sensors, emergency shutdown, and proper ventilation.
5. Customer support and warranty: choose a manufacturer that provides reliable customer support and offers a substantial warranty to cover potential problems.
Comparison with other molecular distillation technologies
Short-range distillation differs from scraped film distillation in that it involves a short and direct path between the distillation flask and the condenser. This design minimizes residence time and opportunities for thermal degradation. On the other hand, scraped film distillation utilizes rotating scrapers to form a feed film for efficient separation.
Membrane distillation has similarities to short-range molecular distillation, as both techniques involve the use of short-range and low-pressure environments. However, thin-film distillation typically operates at higher flow rates and relies on a thin layer of feed flowing down the evaporator wall to promote effective heat transfer and separation.
Case studies: real-life applications
Short-range molecular distillation is a versatile and effective technique used to separate and purify compounds in a variety of industries. Its many benefits, including high purity fractions, minimal loss of heat-sensitive compounds, and scalability, make it an invaluable tool for obtaining quality products. With continued advances in equipment design and automation, the future of short-range molecular distillation offers even greater possibilities for refining processes and increasing productivity. The following picture is the short-range molecular distillation customer installation and commissioning site.


Frequently Asked Questions
1. What is the difference between short-range distillation and fractional distillation?
Short-range and fractional distillation are both distillation techniques, but they differ in operation and results. On the other hand, it utilizes fractional columns to achieve separations based on differences in boiling points, allowing for more precise separation of multiple components.
2. How does short-range molecular distillation help the cannabis industry?
Short-range molecular distillation plays a vital role in the cannabis industry by extracting and purifying cannabinoids such as THC and CBD. It removes impurities and unwanted compounds, resulting in a pure and potent cannabis extract for a variety of uses, including medicinal and recreational consumption.
3. Can short-range molecular distillation be used for large-scale production?
Yes. There is the flexibility to handle larger volumes while maintaining the same efficiency and purity achieved in smaller-scale operations.
4. How do you ensure the safety of the distillation process?
To ensure safety during short-range molecular distillation, follow proper chemical handling procedures, maintain good ventilation, and use appropriate personal protective equipment (PPE).
