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50L×2 Supercritical CO2 Fluid Extraction Equipment

100L supercritical CO2 extractor

Medium-sized supercritical CO2 extractor, each batch of 25LBS dried and crushed plant materials (such as cannabis, ginger, lavender, etc.), is a good machine for extracting essential oils (such as CBD oil, agarwood essential oil and curcumin/turmeric essential oil).

Features of 100L essential oil supercritical CO2 extraction equipment

  • High flow rate, flow rate up to 9.75kg per minute.
  • Single container capacity: 50L, number of vessels: 2
  • The extraction time is short, processing 300-360 pounds per day.
  • The two sets of extraction vessels are designed to operate, and there is no downtime between operations.
  • CO2 is continuously circulated in a closed circuit for fluid recirculation. The standard CO2 recovery system saves production costs.
  • Three separators can easily separate light and heavy components.
  • Low maintenance cost, piston seal can be replaced quickly
  • Extraction, 5G information channel, remote work, compatible with mobile interface
  • Graphic control panel, facing the future, networked production, remote control,
  • Run log record export to optimize production process
  • Database interface, production process customization
  • Friendly man-machine interface, simple operation and setting.

50L×2 supercritical CO2 extraction equipment configuration

Volume50 L, 2 setsVolumeⅠ 27 L, Ⅱ 17L
Max Working Pressure400barMax. working pressure Ⅰ 200bar, Ⅱ 180bar
Outlet pressure400 barOutlet pressure400 bars
Max. flowrate600L/hMax. flowrate20L/h
Volume100 LParameters controlPLC / PC-based software with recipe for automation
Working pressure85 bar Screen/Datalogging7 inches/Included
Power/CO23 phase/Food grade ≥99.5%HS code:8479200000
Installation5800×5000×4200mmAirport /Port of Lading:Shanghai  
Max Working Pressure500-800barBack pressure valvePneumatic control
Fractionating column300par 4-section gradient temperature control

CO2 extraction of natural plant essential oil

Advantages of essential oil supercritical CO2 fluid extraction

Low extraction temperature

The supercritical CO2 extraction method requires a low temperature, the reaction temperature is generally 35~55℃, and the entire reaction process is carried out under the CO2 gas envelope, which can effectively prevent the oxidation and escape of heat-sensitive components;
Therefore, the effective ingredients can be better preserved without being destroyed or secondary biochemical. Moreover, for substances with high boiling point, low volatility, and easily decomposed when heated, the extraction temperature is much lower than its boiling point, so the extraction effect is better.

No chemical solvent residue

Since no organic solvent is used for extraction during the extraction process, the final extract has no chemical solvent residues, which prevents the residue from harming the human body and damage to the environment, and ensures the pure naturalness of the extract.

Simple separation

When the supercritical CO2 extraction method is used to extract substances, the extraction and separation are combined. When the CO2 fluid saturated with the extract enters the separator, the CO2 fluid and the extract are quickly separated into gas and liquid under the influence of pressure drop or temperature change. Two-phase, not only greatly improves the efficiency of extraction, but also consumes relatively less energy, reducing production costs.

Safe and reliable

CO2 is inactive in nature and will not chemically react with the extract during the extraction process. CO2 is a non-flammable gas, odorless, odorless, non-toxic, and very safe.

Low production cost

Because the CO2 production process is mature and the preparation is relatively simple, the price of CO2 gas is relatively cheap, and the purity is high, and it can be recycled in production, which greatly reduces the production cost.

Simple process and fast extraction speed

In the extraction process, both pressure and temperature can become parameters for adjusting the extraction process, and the purpose of extraction can be achieved by changing the two parameters of temperature and pressure. When the pressure is fixed, the material can be separated by changing the temperature; on the contrary, by fixing the temperature, the extract can be separated by reducing the pressure. Therefore, the extraction process is simple and the extraction speed is faster.

Because supercritical CO2 extraction technology has many advantages as above, it has been widely used in the extraction of active ingredients of some natural products in recent years.

Case of supercritical CO2 extraction of herbal essential oil

Plant essential oils are unique aromatic substances extracted from plants. They are volatile at room temperature, have a low boiling point, and are small molecules that are easily absorbed by the human body and have certain health and beauty functions.

Some examples of CO2 extraction of plant essential oils from BIT are listed below

Supercritical CO2 extraction of essential oils

The conventional steam distillation is easy to cause the essential oils to volatilize or oxidize. In recent years, supercritical CO2 has been successfully used to extract essential oils from a variety of spice plants. The product has high purity and pure fragrance.

Supercritical CO2 extraction of cumin essential oil

Using cumin, a characteristic spice crop in Xinjiang, China, as raw material, the optimal extraction conditions for cumin essential oil were determined by orthogonal experiments: extraction pressure 30MPa, extraction temperature 40℃, extraction 3h.

The final extraction yield of cumin essential oil is 3.46%, which is higher than the traditional Soxhlet extraction method, and the product has more stable properties, higher purity, and does not contain fatty acids and other non-polar substances;

Supercritical CO2 extraction of burdock essential oil

The volatile oil was extracted from the burdock root by supercritical CO2 extraction method. The similarities and differences between the organic solvent extraction method and the supercritical CO2 extraction method were compared. The obtained essential oils were analyzed by liquid chromatography. Product yield and essential oil quality are significantly better than organic solvent extraction method;

Supercritical CO2 extraction of peppermint oil

The supercritical CO2 extraction method of peppermint oil, compared with the traditional steam distillation method, the supercritical CO2 method greatly improves the yield of peppermint oil and the content of menthol, and the natural fragrance and color of peppermint are better retained, but this method is subject to extraction The pressure has a great influence. As the extraction pressure increases from 10MPa to 15MPa and then to 20Mpa, the color of the product changes from a reddish brown oil to a dark green oil to a dark green paste. It may be that some interfering impurities are also extracted. Therefore, special attention should be paid to the pressure.

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