Dichloroethane is a commonly used organic solvent, a colorless transparent liquid with a pungent odor similar to ether, insoluble in water, soluble in ethanol and ether. Using dichloroethane to extract the organic phase is a commonly used extraction process in solvent extraction. For example, the reaction liquid obtained after the continuous reaction stage is an alkaline aqueous phase system, which contains the product, sodium chloride, water, etc., and can be extracted with dichloroethane to achieve the purpose of extracting the product into dichloroethane.
Zhengzhou Tiei Extraction CWL-M centrifugal extractor is a highly efficient liquid liquid extraction and separation equipment. Different from the intermittent extraction in the traditional reactor, it is a new type of extraction and separation equipment with continuous mixing and rapid separation. It can quickly realize the continuous production process of chemical industry such as liquid-liquid extraction, mixed mass transfer, reaction, organic phase washing and liquid-liquid two-phase separation. The reaction liquid and dichloroethane are respectively injected into the centrifugal extractor according to a certain ratio. Through the high-speed rotation of the drum, the two phases are quickly mixed and mass transferred to complete the mixing and mass transfer process. The mixed liquid is then separated by the centrifugal force of the drum, and the extracted solvent dichloroethane and the extracted reaction liquid flow out from their respective outlets to complete the two-phase extraction and separation process.
Dichloroethane Three-stage Countercurrent Extraction Process
The extraction process of dichloroethane: dichloroethane enters the centrifugal extractor from the first-stage inlet, flows into the dichloroethane inlet of the second-stage centrifugal extractor, is mixed and separated with the extraction aqueous phase in the second-stage centrifugal extractor, flows into the third-stage dichloroethane inlet from the second-stage centrifugal extractor outlet, is mixed and separated with the extraction aqueous phase, and is discharged from the dichloroethane outlet of the third-stage centrifugal extractor, completing the entire extraction process.
The extracted aqueous phase enters the centrifugal extractor from the third stage and is separated from dichloroethane under the centrifugal force of the centrifugal extractor. The separated aqueous phase flows directly into the second-stage centrifugal extractor through a pipeline for a second extraction. Similarly, the aqueous phase and dichloroethane are separated under the centrifugal force. The separated aqueous phase flows into the first centrifugal extractor through a pipeline and is discharged from the aqueous phase outlet to complete the extraction process.
Using the CWL-M centrifugal extractor, dichloroethane can effectively extract the product from the aqueous phase, which can realize liquid-liquid extraction and separation in industrial continuous production processes.
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