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Continuous centrifugal extraction: solvent extraction is divided into cross-flow extraction and counter-current extraction

With the maturity of centrifugal extraction technology and the increasing demand for automation in the API industry, centrifugal extractors have gradually replaced traditional Gravity extraction equipment has become the main body of extraction equipment, and the centrifugal solvent extraction process formed as the core has also been increasingly widely used.

According to the way of adding the extractant, centrifugal solvent extraction can be divided into cross-flow extraction and counter-current extraction.

Among them, countercurrent extraction is widely used in the separation process of organic phase and aqueous phase due to its high extraction agent utilization rate and low consumption, such as corimycin, penicillin, tocopherol, Ginkgo leaf active ingredients (flavonoids and Terpene lactones, including bilobalide and ginkgolide), tea polyphenols, swainsonine, chlorogenic acid, hydrocortisone, etc.

As a provider of liquid-liquid extraction technology and equipment, Zhengzhou TIEI Extraction’s core product, the new generation CWL-M series centrifugal extractor, has been widely recognized by the market for many years and can meet the needs of continuous counter-current extraction and cross-flow extraction. Compared with traditional extraction equipment, it has irreplaceable and outstanding advantages:

1. Simple and convenient operation: The centrifugal extraction machine can operate intermittently or continuously for continuous production. The operation is simple and convenient, the mixing and separation speed is fast, and the stage retention amount is small;
2. The centrifugal extraction machine has a larger processing capacity and is more energy-saving;
3. The centrifugal extractor uses perfluoropolymer materials, which can withstand corrosion from strong acids (hydrochloric acid, mixed acids, etc.);
4. At the same time, the centrifugal extraction machine has a variety of optional mixing structures, has high separation effect, and can be applied to systems that are easy to emulsify.

Utilizing the characteristics of the centrifugal extractor, which combines powerful mixing and high-speed separation and phase separation in one machine, it is increasingly replacing the manual separation of traditional stirring tanks and sedimentation tanks in the washing, desalting, and impurity removal processes of raw materials. phase method to achieve airtight, fully automatic and continuous production.