Views:5 Author:Site Editor Publish Time: 2020-05-09 Origin:Site
With the development of social science and technology, co2 extraction machine is widely used. What are the advantages of co2 extraction machine?The article mainly introduces the advantages of the co2 extraction machine.
High yield and high quality of co2 extraction machine
The co2 extraction machine is suitable for the separation of thermally sensitive components from biologically active substances.
Co2 extraction machine saves energy
Co2 extraction machine protects the environment
The density of supercritical carbon dioxide is close to that of gas, far less than that of liquid, and its diffusion coefficient is about 100 times greater than that of liquid. Compared with liquid, supercritical fluid has better properties and properties. Therefore, co2 extraction machine can achieve phase equilibrium in a shorter time than the usual liquid-liquid extraction, with a higher extraction rate, and can also improve the purity of the product.
The separation of thermally sensitive substances or physiologically active substances by ordinary distillation method is likely to cause the separation, polymerization, or even coking of thermally sensitive substances, which may destroy the physiologically active substances.Although the method of reduced pressure distillation can be used, the reduction of reduced pressure on temperature is limited, and the separation of high boiling point heat sensitive substances is still very limited.With the co2 extraction machine, although the pressure is relatively high, generally 20MPa ~ 50MPa, it can be operated at a low temperature, generally a little higher than the critical temperature of 31.5℃, not only does not damage the molecular structure, but also can maintain the color, aroma and taste without deterioration.For example, lecithin with egg yolk is widely used in the pharmaceutical and health food industries. The co2 extraction machine can achieve satisfactory results with 55℃ and 38MPa, which not only maintains the biological activity of lecithin, but also improves the extraction yield and product purity.
In co2 extraction machine processes, including extraction and separation, there is often no phase transition process. Even if some processes have phase transition process, the phase transition heat is very small near the critical point. In normal distillation operations, a large amount of heat must be added to the distillation column. If liquid condensation is used, the volume and solvent are separated and concentrated by distillation or evaporation, which also consumes a lot of heat.In contrast, the energy savings of co2 extraction machine are significant.
In recent years, more and more attention has been paid to the research of co2 extraction machine technology. As people become more aware of protection, government agencies in some countries have imposed strict restrictions on the amount of waste released from production.It encourages people to explore production methods that can avoid or reduce environmental pollution, and co2 extraction machine has the possibility of reducing environmental pollution to some extent, and has become a method to protect the environment and deal with waste.
We hope this article has helped you understand the advantages of co2 extraction machine. If you need a co2 extraction machine, please contact us.