1. Overview
Supercritical extraction technology is the latest subject of modern chemical separation technology, and it is an advanced separation process that has emerged in the world. Supercritical extraction means that under a certain pressure and suitable temperature, in the extraction cylinder, the solvent is fully contacted with the extract, the solute diffuses into the solvent, and then changes the working conditions in the separator to separate the dissolved substances to achieve the purpose of separation.
Supercritical extraction has the following characteristics:
1, the extraction temperature is low, the product will not be decomposed.
2, the precise control of temperature and pressure, can achieve selective extraction.
3. There is no solvent residue in the product.
4, the solvent can be recycled.
5. No environmental pollution.
Supercritical fluid extraction technology to CO2 as a solvent, its advantages:
1. The supercritical state of CO2 is easy to realize.
2, non-toxic pollution of food and medicine.
3, there is the role of preventing bacterial activity.
4, not easy to burn, good chemical stability.
5, low price, good economy.
1. Application of supercritical fluid extraction technology
1. Pharmaceutical industry (extraction of effective ingredients of traditional Chinese medicine, concentration and refining of pharmaceutical raw materials, concentration and refining of lipid mixtures, removal of organic solvents)
2, food and fermentation industry (the separation of bacterial products; extraction of flavors and fragrances; extraction of animal and plant fat and fat soluble ingredients; extraction of plant alkaloids; extraction of edible pigments; deodorization, decolorization, deacidification, and removal of organic solvents; removal of harmful and toxic substances.)
3. Cosmetics industry (extraction of essential oils and spices; refining of essential oils and spices.)
4. Petroleum industry (de-leaching of petroleum residual oil; regeneration of lubricating oil; core washing oil;)
5. Chemical industry (separation of hydrocarbons; separation of organic synthesis raw materials; separation of azeotropic mixtures; recovery of reaction raw materials.)
6. Environmental protection industry (removal of harmful heavy metal ions in raw materials, soil and radioactive wastewater; precision cleaning.)

Specifications, models and technical parameters of the main components of the 3. device
1. Main technical parameters