The NMP in the reaction solution is extracted with chloroform by the solvent extraction method, and the extraction equipment can be a centrifugal extractor. Select the extractant chloroform, determine the phase ratio of the two phases, then inject chloroform into the centrifugal extractor from the heavy phase inlet, inject NMP solution into the equipment from the light phase inlet and start the first stage countercurrent extraction. In this process, the light and heavy phases are first mixed in the mixing zone and the chloroform extraction of NMP is completed. Then the mixed phase enters the high-speed separation zone and the two phases are quickly separated. After that, the light and heavy phases are respectively subjected to the second and third stage countercurrent extraction in the subsequent centrifuge. The entire extraction process of chloroform for NMP is finally completed through the three-stage countercurrent extraction. The solvent extraction process has the advantages of obvious extraction effect, fast separation speed, and high extraction efficiency.
Solvent Chloroform Extracts NMP from the Reaction Solution
1.Process purpose: chloroform extracts NMP
2.Material properties: organic phase-chloroform, aqueous phase-NMP, reaction solution (pH=10)
3.Equipment material: stainless steel
4.Extraction principle: By utilizing the different solubility of NMP in water and chloroform, the NMP in the aqueous phase is transferred to the chloroform phase to complete the extraction and separation of NMP.
5.Centrifugal extraction principle: The centrifugal extractor uses a motor to drive the drum to rotate at high speed. Two liquids with different densities and immiscible with each other complete mixed mass transfer under the action of shear force generated by the rotation of the drum or blades, and are quickly separated under the action of centrifugal force generated by the high-speed rotation of the drum.
6.Extraction method: three-stage countercurrent extraction
Technical Advantages of Tiei Extraction CWL-M Centrifugal Extractor
- The extraction system occupies a small area and has a large processing capacity.
- The extraction system is a closed circulation system with a good operating environment.
- The equipment has low power consumption (the power of CWL350-M is 2.2Kw), which can reduce production costs.
- The equipment can achieve continuous operation, greatly reducing manpower investment.
- The loss of chloroform is small, saving investment in subsequent work sections.
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Email: sales@tieiextraction.com
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