Supercritical co2 extraction machine is a kind of extraction equipment and one of our main products.Supercritical extraction technology is an advanced physical separation technology, and it has a wide range of applications, especially in the pharmaceutical industry and food industry.

Supercritical extraction process：
The CO2 in the low-temperature CO2 storage tank is pumped into the condenser by the CO2 transfer pump, and flows into the CO2 storage tank for storage.The liquid CO2 is pressurized to a certain pressure by the CO2 pressurizing pump (according to the production process requirements), and then enters the extraction heater to heat the liquid CO2 to about 50°C (according to the production process requirements), and the CO2 in the supercritical state enters In the extraction kettle with the material already installed, when the supercritical CO2 is extracted in the extraction kettle, the CO2 carrying the extract enters the separation kettle after reaching the set process parameters for separation, and the required products are separated.The gas CO2 enters the circulation pipeline for circulation extraction. The whole process realizes automatic control, which greatly improves the safety of the equipment.

Comparison of Supercritical CO2 Extraction Technology and Traditional Technology：
The supercritical CO2 extraction technology does not use organic solvents, and there is no solvent residue; the traditional solvent method uses a large amount of harmful solvents to extract the oil from the plant. After the oil is obtained, a solvent removal process is required, but no matter how the solvent is removed, it cannot be completely removed;

Supercritical extraction is a physical process, no heavy metals, pesticide residues; heavy metals are insoluble in CO2, pesticides are water-soluble, insoluble in CO2, supercritical method will not carry out heavy metals, pesticides, while the traditional solvent method or pressing method will remove heavy metals , Pesticides are brought out into the oil together;

There are no three wastes; there is no waste gas, waste water or waste residue in the whole process of the supercritical method; while the solvent method uses a large amount of solvents, which are flammable and poisonous, and poses environmental pollution and safety hazards; the squeezing method uses a lot of water, causing waste and waste water discharge;

The extract is highly enriched and has strong selectivity; the supercritical method can adjust the CO2 pressure and temperature to extract the required substances in a targeted manner, while the solvent method is non-selective. The whole process will bring out many unwanted substances, and the later refining process is complicated;

In the pharmaceutical industry, the separated products are required to have high purity and contain no toxic and hazardous substances. However, traditional processes cannot meet these requirements. Supercritical CO2 extraction can achieve no solvent residues in the products.