CO2 Extractor Working Principle and CO2 Supercritical Extraction Machine

The CO2 Supercritical Extraction Machine operates based on the principles of supercritical fluid extraction, a technology that combines efficiency and environmental sustainability. Understanding its working principle provides valuable insights into its applications and benefits.

Working Principle of CO2 Supercritical Extraction

• Supercritical State of CO2: Carbon dioxide reaches a supercritical state when subjected to temperatures above 31°C and pressures exceeding 7.3 MPa. In this state, CO2 exhibits properties of both a gas and a liquid, making it an ideal solvent for extraction.
• Extraction Process Steps:
  • Compression: CO2 is pressurized and heated to its supercritical state.
  • Introduction to the Material: The supercritical CO2 is passed through the raw material, dissolving the desired compounds.
  • Separation: The mixture is directed to a separator, where pressure is reduced, and the extracted compounds are isolated.
  • CO2 Recycling: The CO2 is collected and recycled for future use, reducing waste and operational costs.

Advantages of the CO2 Supercritical Extraction Method

• Eco-Friendly Solvent: CO2 is non-toxic and leaves no harmful residues in the extracted product. This makes it suitable for applications in food, cosmetics, and pharmaceuticals.
• High Efficiency: The process selectively targets specific compounds, ensuring high purity and minimal waste. For example:
  • In botanical extractions, purity levels of over 95% are commonly achieved.
• Cost-Effectiveness: Though the initial investment in machinery is high, the operational costs are significantly lower due to CO2 recycling.

Real-World Example

A natural oils company used a CO2 Supercritical Extraction Machine for lavender oil production. Results included:

• A 20% increase in yield compared to traditional methods.
• Elimination of solvent residues, enhancing product quality for health-conscious consumers.

Conclusion

The working principle of the CO2 Supercritical Extraction Machine highlights its versatility, efficiency, and environmental benefits. As industries shift towards sustainable practices, this technology is poised to become a cornerstone of modern extraction methods.

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