Liquid-liquid extractorIt is a commonly used laboratory instrument that is mainly used to extract substances from one liquid phase to another. The instrument enables the separation and purification of substances by mixing two different liquids to transfer the target substance from one liquid to the other. The liquid-liquid extractor has the advantages of easy operation, fast and efficient, and good repeatability, so it has been widely used in chemical, biological, pharmaceutical and other fields.
1. The working principle of the liquid-liquid extractor.
The liquid-liquid extractor usually consists of a mixer, a phase splitter, a stirrer and a circulation system. It works by adding two liquids in different proportions to the mixer, and by stirring and mixing the two liquids are in full contact, so as to achieve the transfer of the target substance. The mixed liquid flows into the phase splitter, and the two liquids are separated by the action of the phase splitter to realize the separation and purification of the substance. The separated liquid can be re-entered into the circulation system for multiple extractions to improve the separation effect.
2. Classification of liquid-liquid extractor.
According to different classification criteria, liquid-liquid extractors can be divided into many types. According to the mode of operation, it can be divided into intermittent type and continuous type;According to the separation method, it can be divided into centrifugal type, gravity type and filter type. Among them, batch liquid-liquid extractors are the most commonly used, which are easy to operate and control, and are suitable for laboratory and small-scale production. Continuous liquid-liquid extractors are suitable for large-scale and continuous production.
3. Application range of liquid-liquid extractor.
Liquid-liquid extractors have a wide range of applications in many fields. In the field of chemistry, it can be used for the separation and purification of organic substances, such as aromatics, olefins, alcohols, etc.;In the biological field, it can be used for the isolation and purification of biological samples, such as proteins, enzymes, nucleic acids, etc.;In the pharmaceutical field, it can be used for the extraction and separation of drugs, such as natural medicines, synthetic drugs, etc. In addition, the liquid-liquid extractor can also be used in environmental protection, food, cosmetics and other fields.
Fourth, the advantages and disadvantages of the liquid-liquid extractor.
The liquid-liquid extractor has a variety of advantages, such as easy operation, good separation effect, and automation. At the same time, it also has some disadvantages, such as it is not suitable for some high-viscosity liquids or liquids with high solid particle content, and it also has certain limitations for some unstable or easily oxidized substances. Therefore, when using a liquid-liquid extractor, it is necessary to select the appropriate operating conditions and methods according to the actual situation.
Fifth, the future development trend.
With the continuous development and progress of science and technology, the liquid-liquid extractor is also constantly updated, and will develop in the direction of intelligence, automation, efficiency and environmental protection in the future. At the same time, with the continuous expansion of application fields, the function and performance of the liquid-liquid extractor will be continuously improved and improved. In the future, the liquid-liquid extractor will play a more important role in many fields, providing more convenient and efficient technical support for scientific research and industrial production.