Brief introduction
Molecular distillation is a high-vacuum precision separation technology that efficiently purifies high-boiling-point and heat-sensitive substances by controlling the mean free path of vapor molecules. The device features a multi-stage distillation design (two-stage or three-stage), with core components including a wiped-film evaporator and a short-path distillation system, ensuring high separation efficiency and product purity. It is ideal for high-end purification applications in industries such as food, chemicals, and pharmaceuticals.
advantages
Low-temperature separation protects heat-sensitive substances
Under high vacuum conditions, boiling points are significantly reduced, preventing thermal degradation of sensitive components such as vitamins and essential oils.
01
High separation efficiency with broad applicability
Separation is achieved through differences in molecular motion, enabling the processing of substances with similar boiling points or azeotropes (e.g., DHA purification from fish oil) with higher precision than traditional distillation.
02
Short residence time and high purity
The thin-film evaporation process ensures material exposure time is less than one minute, minimizing decomposition and achieving fraction purity exceeding 95% (e.g., β-carotene).
03
Flexible operation and strong adaptability
Adjustable parameters such as vacuum level and temperature make it suitable for high-viscosity materials (e.g., resins) and support continuous production.
04
Environmentally friendly and low pollution
No chemical reagents are required, eliminating solvent residues and meeting stringent food and pharmaceutical industry standards.
05
Model of molecular distillation device
Note
1) The capacity varies depending on the materials;
2) The material of our SPD is stainless steel, but we can also provide glass material.
Workflow
1
Raw materials are delivered via a feed pump. High-viscosity materials undergo preheating to reduce viscosity and enhance flowability.
2
A rotating wiper evenly spreads the material into a micron-thin film, while the heating system rapidly vaporizes target components.
3
Under a high vacuum (<5 Pa), vaporized molecules directly condense on the condenser. Light components are collected, while heavy components flow to the bottom.
4
Secondary or tertiary distillation stages can be added as needed to further improve product purity.
5
Each fraction is automatically separated and collected, enabling continuous production.
6
The system also supports automated post-distillation cleaning.
Applications
Fine Chemicals
Separation of high-molecular-weight compounds (e.g., polyglycerol esters, silicone oil) and purification of pharmaceutical intermediates (e.g., vitamin E, DHA/EPA from fish oil).
Food Industry
Removal of free fatty acids and off-flavor compounds from edible oils; extraction of natural pigments (e.g., β-carotene).
Cosmetics & Fragrances
Purification of natural fragrances (e.g., rose essential oil); elimination of solvent residues.
Petrochemical Industry
Separation of lubricant components from heavy oils; recovery of base oils from waste lubricants.
our factory
Packing
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