Supercritical fluid extraction Machine is a technology that uses supercritical fluid as a solvent to extract and separate substances.
Supercritical fluid is a high-density fluid above the critical temperature and critical pressure. It is neither a gas nor a liquid, and its properties are between those of a gas and a liquid, and it is characterized by having solvent properties.
When the fluid is in a supercritical state, its density is close to that of a liquid, and changes significantly with changes in fluid pressure and temperature, while the solubility of the solute in the supercritical fluid increases with the increase in the density of the supercritical fluid. Supercritical extraction is carried out using this property of supercritical fluid.
The basic principle of supercritical fluid extraction is to dissolve the required chemical components with a supercritical fluid under conditions above the critical temperature and critical pressure, and then reduce the pressure of the fluid solution or increase the temperature of the fluid solution, so that the solute dissolved in the supercritical fluid precipitates due to its reduced density and reduced solubility, thereby achieving the extraction of specific solutes.
Seven Application Advantages Of Supercritical Co2 Extraction Machine
- Low critical temperature: suitable for the extraction and purification of heat-sensitive compounds.
- Inert environment: Provide an oxygen-free environment to avoid product oxidation and do not affect the effective ingredients of the extract.
- Fast extraction speed: Non-toxic, non-flammable, safe to use, and no pollution to the environment.
- No solvent residue: No nitrates and heavy metal ions, ensuring the purity of the extract.
- Accurate dissolution ability: By adjusting the operating pressure, temperature, flow rate and other parameters of CO2, the target product can be accurately dissolved.
- Environmental protection and energy saving: The solvent can be recycled, does not produce three wastes, and is environmentally friendly.
- Wide applicability: Widely used in biology, pharmaceuticals, food and other fields.
Conclusion
Supercritical CO2 fluid extraction process is a new separation technology in modern chemical separation. It has the characteristics of fast mass transfer rate, strong penetration ability, high extraction efficiency and low operating temperature. This technology has been widely used in medicine, food, chemical and other industries.