Supercritical fluid refers to a fluid whose temperature and pressure are above its critical temperature (Tc) and critical pressure (pc), between gas and liquid. Supercritical fluid technology is a new separation technology in modern chemical separation.
Supercritical extraction uses CO2 as the solvent, because the CO2 fluid in the supercritical state has a greater density and dielectric constant, and is more soluble in substances. When the temperature and temperature change, its solubility will suddenly change. Therefore, not only is it The solubility of certain substances is selective, and the separation of the solvent from the extract is easy.
This supercritical CO2 extraction device can be used to extract materials (solid and liquid) at high pressure and suitable temperature under separator replacement conditions, so that the soluble materials can decompose the target products during the extraction and separation process.
The supercritical CO2 extraction device system includes extractor, separator, CO2 high-pressure pump, co-solvent pump, cooling system, heat exchange system, CO2 storage tank, liquid level gauge, purification filter system, flow meter, temperature control system, and safety protection. system etc. All major machinery and auxiliary equipment can meet the requirements of supercritical extraction system and process flow.
Six characteristics of supercritical carbon dioxide extraction machine
- Low critical temperature, suitable for extraction and purification of heat-sensitive compounds.
- It can provide an inert environment to avoid product oxidation and affect the effective content of the extract.
- Non-toxic, non-flammable, safe to use and no pollution to the environment.
- No solvent residue, no nitrates and heavy metal ions.
- Carbon dioxide can be recycled and reused.
- Pressure and temperature can be designed according to requirements.
Conclusion
Supercritical CO2 fluid can be used to separate and extract specific substances from solid media, and can also be used to separate and purify specific components in liquid media. The practical application of supercritical CO2 fluid extraction in production is achieved through safe and reliable extraction devices.