essential oil CO2 extraction machine

Over 30+ years of experience. Free 100+ CO2 extraction process. High-terpene full-spectrum fast CO2 extraction of herbal essential oils, no solvent residue.

Essential oil CO2 extraction process is very popular because Supercritical essential oil CO2 extraction machine produces very clean essential oils without solvent residues that can be left behind, at same time it can enhance potency of essential oils and terpenes.

Then why the supercritical CO2 extractor capacity of the past model is only 24L instead of 25L? Here is a small story. In the past China’s pressure vessel regulations, for safety reasons, pressure vessels greater than or equal to 25L need to be tested by the government’s quality management department, and will cost some fees, so users only choose 24L for convenience. .Therefore, China’s supercritical CO2 extraction machine used to have these models: 24L×2, 24L×3, 24L×4.

But now with the policy change, it has been changed to 25L×2, 25L×3, 25L×4.This can be regarded as a workaround between enterprise and government management.

50l supercritical co2 extraction machine
50l supercritical co2 extraction machine
Essential Oil Supercritical CO2 Extraction Machine
Essential Oil Supercritical CO2 Extraction Machine

In fact, the safety of pressure vessels is the most important anyway, and there is no room for sloppy;

BIT is one of the units that formulate China’s supercritical fluid system pressure vessel standards. BIT supercritical CO2 extraction equipment strictly follows from the overall structure to many details at the beginning of the design.

Design in strict accordance with national standards and ASME standards, and strictly control all aspects of material procurement, production, assembly, testing and acceptance to ensure safety.

Volume25 L, 2 setsVolumeⅠ 15 L, Ⅱ 10L
Max Working Pressure450barMax. working pressure Ⅰ 180bar, Ⅱ 10L 160bar
Max. flowrate400 L/h Outlet pressure800 bars
Outlet pressure800 barsMax. flowrate1/4 – 20L L/h
Volume20 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
Installation5500x5000x4000mmAirport /Port of Lading:Shanghai  
Max Working Pressure500-900barBack pressure valvePneumatic control
Fractionating column300par 4-section gradient temperature control
50L supercritical co2 extraction & fractionation machine
P-25DF (50L) supercritical CO2 extraction & fractionation machine

This is a P-25D capsanthin extraction machine equipped with a supercritical CO2 fractionation column.

This P-25DF is used in Thailand to extract capsaicin and chili oil, and it is suitable for the extraction of cannabis/hemp/hash oil, because it can separate most of the useless substances in the fractionation process, such as wax, chlorophyll, etc., saving use cost.

Supercritical CO2 fractionation column is also called supercritical CO2 rectification column in China. The configuration of this machine’s fractionation column is as follows:

Equipped with a water jacket circulating heating system, the temperature can be adjusted. Due to process requirements, a low temperature coil is equipped in the water bath, and the control temperature is less than about 10 ℃ at room temperature.

Material 0Cr18Ni9

Specifications Φ60× 6× 3500 / 30MPa temperature control with four gradients

According to the process requirements, the user can choose the packing with relevant specifications. (With filler 5 × 5mm)

It can be used for supercritical fractionation extraction of cannabis/hemp hash oil, capsaicin and garlic oil

Essential Oil Supercritical CO2 Extraction Machine
6L Essential Oil Supercritical CO2 Extraction Machine

essential oil extraction process

Plant essential oil
CO2 essential oil

Essential oils are extracted from the leaves, flowers, seeds, fruits, roots, bark, resin, wood heart and other parts of plants by steam distillation, cold pressing, liposuction and solvent extraction. They have a high concentration of aroma and Volatile substances.

In addition to the essential oils that can be extracted from a certain part of the plant, some plants can extract essential oils in several parts. For example, bitter orange can extract essential oils from the buds, leaves and fruits of three parts.

Not all plants can produce essential oils, only plants that contain balsam glands can produce essential oils. The distribution of balsam glands in different plants is different, some are on petals, leaves, rhizomes or tree trunks.

Essential oils contain many different ingredients. Some essential oils, such as rose, can be formed by combining more than 250 different molecules.

Various essential oils are composed of different organic compounds.

These compounds are soluble in alcohols, oils, emulsifiers, ethers and chloroform. The aroma and therapeutic properties of each essential oil are related to the composition and concentration of the constituent essential oil molecules.

The ingredients mainly contain the following categories: alcohols, aldehydes, acids, phenols, esters, ketones and terpenes.

Plant essential oil CO2 extraction machine
Essential oil CO2 extraction machine

Your sense of smell enables you to experience your surroundings in a powerful way. Essential oils are used to stimulate the sense of smell through aromatherapy. They can also be mixed with carrier oils and used directly on the skin or hair.

Distilled from the leaves, flowers, and seeds of plants, there are so many kinds of essential oils. To help you sift through the essential oil shelf, we rounded up a list of oils, along with specific recommendations.

Peppermint, Lavender, Tea tree, Bergamot, Chamomile, Jasmine, Ylang ylang, Eucalyptus,Rose geranium,Patchouli

Plant essential oil co2 extract
CO2 essential oil


It is the most commonly used extraction method. Distillation technology and distillation method determine the quality of essential oils.
The distillation method is very convenient and does not require the use of chemical solvents, so the application is still very common now. Roses, lavender, rosemary, geranium, etc. mostly use this method.


An ancient method for extracting precious floral scents. The oil is used to absorb the aroma molecules, and then the “original essence” is extracted with alcohol. After the alcohol evaporates, the remaining aromatic essential oils are left behind.

Squeezing method (extrusion method)

By cutting, crushing, squeezing and other methods, the plant water and aromatic essential oils are separated from the raw materials to obtain a mixture of water and oil, and then centrifugation, filtration and other methods are used to separate the oil and water to obtain the essential oil.

Solvent extraction

Refine flowers that are delicate and not suitable for high-temperature distillation extraction. Essential oils generally labeled “absolute” on the market. Use alcohol, ether liquid butane and other solvents to repeatedly pour on the plants, and then separate the solvent containing essential oils, and then obtain essential oils by low-temperature distillation, which can replace liposuction. Such as cinnamon, benzoin, etc.;

Ultrasonic extraction

The latest extraction method is applied in countries with advanced technology. It uses high-intensity, high-energy ultrasonic waves to improve the defects of traditional solvent extraction methods, reduce heat loss caused by temperature, and extract more biologically active ingredients, so that the quality of essential oils is good, and the extraction efficiency is also high

Essential oil CO2 extraction machine
Essential oil CO2 extraction machine

Essential oil CO2 extraction process

The whole process is carried out at low temperature, and the essential oil is dissolved from the plant under very high pressure, so the fragrance is not affected by heat.

The principle is: the density of carbon dioxide under high pressure or low temperature is close to that of liquid, while retaining some of the properties of ordinary gas. It is called “supercritical fluid”, which has strong dissolving ability.

Due to the short extraction time, there will be no chemical reaction between the solvent and the flavor. In addition, due to the huge equipment and high cost, it is only used for precious essential oils, and the products are marked with CO2;

The supercritical carbon dioxide extraction method enables the extraction of essential oils at room temperature without using solvents harmful to the human body, and can better protect the natural activity of the product. It is a more advanced “green separation technology”.

How to extract essential oils with CO2
  • Create supercritical CO2 fluid.
  • Alter pressure and temperature, depending on what’s being extracted and the goals of the extraction.
  • Pass the supercritical CO2 through an extractor containing the plant matter itself.
  • A solution forms as a combination of the CO2 and essential oil, terpenes and other plant-based compounds.
  • Pass the new solution through a separator to quickly and easily remove (and recycle!) the supercritical CO2 fluid.
  • Leave the new wax/oil extract out to allow any remaining CO2 to naturally evaporate.
Herbal Essential Oil Supercritical CO2 Extraction Machine
Herbal Essential Oil Supercritical CO2 Extraction Machine
Supercritical CO2 applied to the extraction of rose oil
Supercritical CO2 applied to the extraction of rose oil
Advantages and disadvantages of CO2 essential oil extraction process


  • Safety: CO2 is a common food additive and is used to produce things like carbonated soft drinks.
  • Effectiveness: CO2 has been used as an extraction solvent for years by food companies. It is used to remove caffeine from coffee and as an extraction solvent when producing essential oils.
  • Purity: The essential oil produced are potent and free of chlorophyll with minimal risk of contaminants.


  • Expensive: You can only complete the process with the aid of extremely expensive equipment.
  • Technical Ability: CO2 essential oil extraction is not something that should be attempted by an amateur chemist.
Agarwood essential oil molecular distillation machine
Essential oil molecular distillation machine


Molecular distillation technology uses the difference in the free path of molecular motion of different substances to realize the separation of substances, so that it can realize operations far away from the boiling point. It has the characteristics of low distillation pressure, short heating time, and high degree of separation, which can greatly reduce the separation of high boiling point materials. Cost, excellent protection of the quality of heat-sensitive materials.

Molecular distillation extraction technology has been widely used in the extraction of high-purity substances, and is suitable for the extraction and separation of natural substances. For example, in the extraction of cannabis/hemp/hash oil and agarwood essential oil, molecular distillation extraction technology is used in the final process.

Traditional separation methods such as steam distillation, pressing and extraction have some shortcomings in the processing process. For example, natural active ingredients are easily destroyed, and organic solvents harmful to the human body may remain in the final product.

Essential oil CO2 extraction plant Cost and machine extraction co2 price

Our essential oil extraction equipment price is lower than our peers’, and our extraction equipment is high quality, we have our own manufacturing factory, all products are factory price, there is absolutely no middleman markup, we accept both small batch scale customer and large industrial batch scale wholesale customer, CO2 extraction machines and herb oil extraction machines for sale online.

2100l supercritical co2 extraction machine
Essential oil CO2 extraction machine

Supercritical Fluid Systems

What is SCFE

Supercritical fluid extraction (SFE) is the process of separating one component (the extractant) from another (the matrix) using supercritical fluids as the extracting solvent.

What is supercritical fluid extraction
What is supercritical extraction used for?

What is supercritical CO2 fluid extraction used for? Can supercritical CO2 extraction help you run for president of the United States? Does CO2 extraction remove pesticides? What is supercritical …

What is the most commonly used supercritical fluid extraction?
What is the most commonly used supercritical fluid extraction?

Why is carbon dioxide used as a supercritical fluid? Is supercritical CO2 extraction safe? Is supercritical CO2 corrosive? What can supercritical CO2 extract?What are the advantages and disadvantages …

What are the 3 key points of supercritical CO2 extraction?
What are the 3 key points of supercritical CO2 extraction?

What is the best raw material processing method? What is the best CO2 extraction pressure? What is the best CO2 extraction temperature? What are the best supercritical CO2 extraction parameters?

What are the 3 types of supercritical fluid extraction processes?

Pressure reduction method, variable temperature method and constant temperature and constant pressure adsorption method. The answer has been provided, I guess you will understand it after reading it.

Parts identification drawing of supercritical carbon dioxide extraction machine
What is the principle of supercritical fluid extraction?

What are the advantages of supercritical CO2 extraction?What are the featuress of supercritical CO2 extraction?How does supercritical fluid extraction work?

Entrainer system of supercritical CO2 extraction machine
What is the use of the entrainer for supercritical CO2 extraction?

What is the entrainer of supercritical CO2 extraction? What are the the use method and selection criteria of entrainer (cosolvent)? What should be considered when choosing an entrainer?

Entrainer system of supercritical CO2 extraction machine
What is the multi-stage extraction and separation of supercritical CO2 extraction?

What is the effect of multi-stage extraction of supercritical CO2 extraction ? Why does supercritical extraction require multi-stage separation?

What are the extensions of supercritical fluid extraction technology?
What are the extensions of supercritical fluid extraction technology?

7 kinds of fine separation and extraction technologies combined with supercritical extraction technology have expanded the application range of CO2 extraction.