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How does the supercritical fluid extraction device perform extraction

Supercritical fluid extraction technology is the newest discipline emerging in modern separation, and it is an advanced separation process currently emerging in the world. The so-called supercritical fluid is a fluid whose thermodynamic state is above the critical point (Pc=7.32MPa, Tc=31°C). The critical point is the point where the gas-liquid interface has just disappeared. The supercritical fluid has unique physical and chemical properties. Its density is close to that of liquid, but its diffusion coefficient is large, its viscosity is small, and its dielectric constant is large. It has good dispersion effect and good solubility. Supercritical extraction refers to a certain pressure and suitable temperature in the extraction cylinder. The solvent is in full contact with the material to be extracted, the solute diffuses into the solvent, and the working conditions are changed in the separator to dissolve the dissolved material so as to achieve the purpose of separation.