Stainless steel molecular distillation equipment is a kind of equipment which uses the principle of molecular distillation to separate and purify substances:
the nature and principle
- Nature: Stainless steel molecular distillation equipment is usually made of corrosion-resistant, easy-to-clean stainless steel, to ensure the service life of the equipment and health reliability.
- Principle: The equipment uses the distillation process under high vacuum conditions to achieve separation through the difference in the average free range of different material molecules. In the high vacuum environment, the evaporation of the molecular average free range is greater than the distance between the evaporation surface and the condensation surface, so that the components in the liquid are separated according to the different evaporation rate.
the structure and composition
Stainless steel molecular distillation equipment usually includes the following main parts:
- Feeding system: responsible for feeding the material to be separated continuously or in batch into the heating system.
- Heating system: controls the evaporation process of the material in the evaporation chamber.
- Evaporation chamber: where the material is heated and evaporated.
- Condensation chamber: the evaporated molecules are condensed into liquid here.
- Vacuum pump: used to maintain a high vacuum environment in the evaporation chamber and condensation chamber.
In addition, modern stainless steel molecular distillation equipment may also be equipped with gear pumps, continuous collection valves and collection bottles, etc., in order to achieve continuous in and out of the material, to improve efficiency and automation.
working characteristics
- Low distillation temperature: molecular distillation is operated at a temperature far below the boiling point, reducing the risk of heat loss and decomposition reactions.
- Distillation vacuum is high: the equipment can be obtained inside a high degree of vacuum, usually molecular distillation is operated under very low pressure, the material is not easy to oxidise and damage.
- Thin film of distillate: The equipment is designed with a short distance mass transfer path, which enables the vapour to quickly contact with the cold surface on the condenser and condense into a pure product, improving the separation efficiency.
- Material heating time is short: the distance between the heated liquid surface and the condensing surface is less than the average free range of light molecules, the light molecules escaping from the liquid surface almost reach the condensing surface without collision, which reduces the chance of thermal decomposition of the material.
application
Chemical industry
used to separate and purify a variety of chemical raw materials and products.
Pharmaceutical industry
to extract the active ingredients in drugs, to ensure the purity and effect of drugs.
Food industry
extraction of natural flavours and vitamins, etc.
Petroleum industry
refining and purifying various compounds with high boiling point and high viscosity, such as lubricating oil, heavy oil, etc.
Advantages
- Protecting heat-sensitive substances: the operation is carried out at a lower temperature, which can better protect heat-sensitive substances.
- Avoiding oxidation and thermal decomposition: working in a high vacuum environment can effectively avoid oxidation and thermal decomposition, ensuring the quality and purity of the product.
- Corrosion resistance and easy to clean: stainless steel ensures the stability and durability of the equipment.
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