Difference between Rotary Evaporator and Short-Path Distillation
Rotary evaporator and short path distillation are each used to pay attention or extract substances from mixtures. They are very similar however still have some differences between them. Next, let's go through the differences between the rotary evaporator and short path distillation:
1. Different working principles. Rotary evaporator keeps rotating the evaporation flask by electrical, to find a way to enlarge the evaporation area to accelerate the evaporating velocity. Short path distillation decreases the strain inside the distillation equipment, to be able to decrease substance boiling factors. Compared with beneath regular strain, many substances boiling factors might lower 80C-100C beneath pressure 1.3-2.0KPa.
2. Different functions. A rotary evaporator is mainly used to continuously distill volatile solvent under lowered pressure in chemical, industrial, biology medicine, and so forth. Short path distillation is principally used for the separation and extraction of excessive boiling point substances and the compounds which have been thermally decomposed, oxidized, or polymerized without reaching the boiling level at atmospheric distillation.
3. Different parts. The rotary evaporator consists of a rotor, evaporation flask, heating mantle, condensing tubes, and so on. Short path distillation equipment consists of an evaporation flask, vacuum pump, safety, and pressure-measuring half. The glassware in the entire equipment must be made from thick glass. Otherwise, the short path distillation equipment could explode due to the uneven drive on the glassware.
What is Short Path Distillation Used for?
Short path distillation is widely utilized in many fields, for instance, petrochemical business, pharmacy trade, oil production trade, food-processing trade, and different fields.
Therefore, there are such a lot of applications of short path distillation, and they're as follows:
1. In the petrochemical business, the applications are waste oil regeneration, oil deweighting, ammonia, amine, quinoline derivatives, epoxy resin, resinous acid, isocyanate, isobutyl ketone, peroxide, liquid crystal, polyethylene glycol, silicone oil, softener, and so forth. Among these functions, waste oil regeneration is very environment-protecting and energy-saving, because regenerating waste oil merchandise more oil that people can use, which means folks could make full use of waste oil.
2. In pharmacy trade, the applications are amino acid ester, polymer intermediate products, vitamin E, vitamin life, and so forth. Among these applications, vitamin E is extensively utilized in the skincare field and is very popular these days.
3. In the oil manufacturing trade, the purposes are diglycerides, dimer fatty acids, fatty acids, fatty acid derivatives, polyglycerides, acids, wool ester alcohol, and so on.
In the food-processing industry, the applications are monoglyceride, lauric acid, propylene glycol, l-lactic acid, cod liver oil, rice bran oil, wheat germ oil, cinnamon oil, rose oil, and so forth. Among these functions, rose oil is used in skincare fields lots. Cinnamon oil is used in skincare and well-being care lots, especially dispelling wind and dampness, warming and strengthening the spleen and stomach.
