Wiped Film Molecular Distillation Equipment: Low Thermal Degradation for CBD Oil Purification

1. Ideal separation solution for high-boiling-point, thermally sensitive, and oxidizable materials: Molecular distillation operates at temperatures well below the material’s boiling point with ultra-short material residence times.

2. Effective removal of unwanted substances: It efficiently eliminates organic solvents, odors, and other impurities from liquids, making it highly effective for decolorizing liquids post-solvent extraction.

3. Targeted separation and multi-stage processing: Molecular distillation selectively evaporates target products to remove impurities, and can separate two or more substances simultaneously through multi-stage fractionation.

4. Physical separation process: The fractionation process is entirely physical, providing exceptional protection against contamination and degradation for the separated materials.

5. Low distillation temperature: Molecular distillation operates at temperatures significantly below the boiling point of materials, enabling separation as long as a temperature differential exists—a core distinction from conventional distillation methods.

6. Short material heating duration: The distance between the heated liquid surface and cooled condensation surface is shorter than the mean free path of light molecules, allowing light molecules to reach the condensation surface with minimal collisions. Material residence time at distillation temperatures ranges from seconds to tens of seconds, significantly reducing the risk of thermal decomposition.

7. High distillation vacuum: Molecular distillation systems maintain extremely low internal pressure, creating a high-vacuum environment that prevents oxidative degradation of materials.

8. No boiling or bubbling: Molecular distillation relies on surface free evaporation of the liquid layer. Performed under low pressure with no dissolved air in the liquid, the process avoids boiling and bubbling entirely.

9. Non-toxic, residue-free operation: The process produces pure, safe end products without toxicity, harm, or pollution. It features simple operation with minimal equipment and can separate materials that are difficult to process via conventional distillation.

10. Low energy consumption: Molecular distillation systems have minimal total heat loss, and their unique structural design creates extremely low internal pressure, resulting in far less internal resistance than conventional distillation setups to significantly reduce energy usage.

11. Higher equipment cost: Molecular distillation systems require precise manufacturing to maintain high vacuum levels, including strict material sealing standards and optimized spacing between evaporation and condensation surfaces, leading to higher production costs.

Advantages:

When applied in industrial settings, molecular distillation technology offers clear advantages over conventional distillation, as evidenced by its key characteristics:

Application:

Molecular distillation is used industrially for purification of oils. It is also used to enrich borage oil in γ-linolenic acid (GLA) and also to recover tocopherols from deodorizer distillate of soybean oil (DDSO).

Typical Applications

Fine Chemicals

Separation of nitric acid from organic high boiling liquids

Separation of butane (butyne) diol from high boiling liquids

Recovery of methanol from high boiling liquids

Recovery of xylenol (dimethylphenol) from a purification solution

Removal of hexane from PP and PE waxes

Drying of salt via the evaporation of water and solvent

Separation of phenol from bituminous coal pitch

Distillation of starting products for the production of insecticides

Separation of byproducts in the production of synthetic fibers

Polymers

Distillation of TDI, HDI and MDI (isocyanates)

Final removal of toluene from epoxy resin

Separation of THF from polymers

Distillation of trimethylpropane from high boiling liquids

Recovery of solvents from synthetic resin production

Lactic Acid, starch and sugar

Upgrading and distillation of lactic acid

Upgrading of tartaric acid derivatives

Concentration of sweetening agents

Concentration of modified starch

Pharmaceuticals

Concentration of active ingredient solutions

Distillation of pharmaceutical substances

Upgrading of substances for artificial feeding

Oleochemicals, Fatty Acids,Biodiesel

Separation of dioxin from surfactants

Removal of free fatty acids from mon, di and triglycerides

Distillation of monoglycerides

Distillation of fatty acids from tall oil

Distillation of fatty acid methyl esters

Separation of residual glycerine from residues in biodiesel production (glycerine dryer)

Miscellaneous

Drying of industrial sludge

Drying&pre-concentration of municipal sewage sludge

Drying of hydroxide sludge

Drying of inorganic salt solutions

Drying of preliminary and intermediate products from chemical industry

Drying of suspensions, pastes and moist solids into powder

Drying of lubricants for forging industry