In high-end manufacturing fields such as fine chemicals, pharmaceuticals, agrochemicals, and new materials, product purity directly determines its value and market competitiveness. Inorganic salts, residual catalysts, and acidic or alkaline impurities remaining in the reaction system are like “grains of sand” hidden in a refined product, severely affecting both quality and yield. How to efficiently and thoroughly remove these impurities and achieve deep purification has become a common challenge across the industry.
Traditional water washing desalination methods, such as intermittent operation in stirred tanks and static mixers, generally suffer from low efficiency, high energy consumption, incomplete separation, frequent emulsion formation, and large space requirements. Today, an innovative piece of equipment based on liquid–liquid extraction technology—the Zhengzhou Tiei Extraction CWL-M Series Centrifugal Extractor—is delivering a disruptive transformation to purification processes in fine chemical production with its exceptional performance.
Technical Core: High-Efficiency Countercurrent Centrifugal Extraction
The CWL-M centrifugal extractor leverages centrifugal force to achieve a revolutionary upgrade in both mixing–mass transfer and phase separation.
- High-Efficiency Mixing and Mass Transfer:
The organic feed phase and the washing water are rapidly sheared and dispersed into extremely fine droplets by the high-speed rotating drum and impellers. The interfacial contact area between the two phases increases exponentially, delivering a mass-transfer efficiency far superior to mechanical stirring. This ensures the aqueous phase can fully “capture” and dissolve fluoride salts from the organic phase. - Powerful Centrifugal Separation:
Under a strong centrifugal field, the mixed liquid is rapidly and clearly separated into light and heavy phases according to density differences. This process takes only a few seconds, eliminating the time and gravity dependence of conventional settling, effectively preventing emulsification, and ensuring that the discharged organic phase is clear and extremely low in salt content.
Its core workflow is as follows:
1.Continuous Feeding
The organic phase (feed liquid) containing impurities (such as salts) and the washing water (aqueous phase) are continuously pumped into the centrifugal extractor through their respective inlets.
2.High-Efficiency Mixing
Inside the high-speed rotating drum, the two liquid phases are intensely sheared and collided within a very short time, achieving thorough mixing and mass transfer. The aqueous phase “captures” the inorganic salts and other water-soluble impurities dissolved in the organic phase.
3.Rapid Centrifugal Separation
Under a powerful centrifugal field, the mixed liquid is quickly and cleanly separated due to the density difference between the two phases. The heavy phase is thrown toward the outer edge of the drum, while the light phase concentrates at the center.
4.Countercurrent Discharge
The separated light and heavy phases flow through different channels and are continuously discharged from different outlets, completing a full extraction and washing process. Depending on purity requirements, multi-stage countercurrent extraction can be easily implemented to maximize washing-water utilization and enhance desalination efficiency.
The entire process is completed instantly in a sealed environment, truly achieving fully continuous “feeding–mixing–separation–discharge” operation.
Why Choose the CWL-M Centrifugal Extractor
- Accuracy Guaranteed:
The strong centrifugal separation force ensures complete separation of the organic and aqueous phases, eliminating phase entrainment. This is the key to maintaining the salt content in the discharged organic phase at just a few ppm - Significant Efficiency Boost:
With continuous feeding and continuous discharge, processing capacity can be flexibly adjusted according to model specifications. It easily supports production expansion, and capacity is no longer a bottleneck. - Cost Savings:
The equipment is compact and occupies minimal floor space. Compared with multiple stirred tanks, it offers clear advantages in both capital investment and operating costs. Additionally, its high washing efficiency reduces the consumption of wash water. - Safe and Reliable:
Fully sealed operation makes it suitable for volatile and flammable organic solvents, ensuring both safety and environmental compliance.
Email: sales@tieiextraction.com
Whatsapp: +86 19069612820
