In fields such as chemical engineering and pharmaceuticals, the rapid and efficient separation of toluene and hydrochloric acid solution has always been a critical step. Traditional separation methods, such as static settling, suffer from major drawbacks including bulky equipment, low separation efficiency, easy emulsification, and high solvent residue. Today, a highly efficient and energy-saving solution is being widely adopted — the solvent extraction method combined with the centrifugal extractor. This technological approach has completely revolutionized the liquid–liquid extraction and separation process.

The CWL-M centrifugal extractor, independently developed by Zhengzhou Tiei Extraction Technology Co., Ltd., is a new, fast, and highly efficient liquid–liquid extraction and separation equipment. It fundamentally differs in working principle from traditional extraction equipment such as mixer-settler and extraction column. The centrifugal extractor uses the motor-driven drum to achieve high-speed rotation; under the shear force generated by the rotation of the drum or impeller, two immiscible liquids of different densities are mixed and undergo mass transfer. Then, under the centrifugal force produced by high-speed rotation, the two phases are rapidly separated.

Extraction and Separation of Toluene and Hydrochloric Acid Solution

Mixed mass transfer
The toluene and hydrochloric acid mixture to be treated, along with an appropriate amount of extractant (selected according to the process requirements), is fed into the CWL-M centrifugal extractor.

Centrifugal separation
Under a centrifugal force thousands of times greater than gravity, the two liquid phases are rapidly sheared and mixed, achieving efficient mass transfer, and are then quickly separated.

Phase separation
The two liquid phases with different densities — typically the purified toluene phase and the hydrochloric acid phase containing impurities — are clearly discharged through separate channels inside the extractor, completing the separation process.

Continuous Operation
The entire process is carried out continuously in a closed system, allowing for automated control and greatly improving processing efficiency.

Core Advantages of the CWL-M Centrifugal Extractor

  1. High Efficiency and Speed
    Centrifugal force replaces gravity, allowing the separation process to be completed within seconds. It handles large processing volumes and far outperforms traditional methods.
  2. Thorough Separation
    The powerful centrifugal force effectively eliminates emulsification, achieving complete phase separation with high product purity and minimal solvent entrainment losses.
  3. Compact Footprint
    With a compact structural design, the equipment occupies only a fraction of the space required by conventional extraction columns, greatly saving plant space.
  4. Safety and Environmental Protection
    The fully enclosed operation effectively prevents the leakage of volatile organic compounds such as toluene, ensuring production safety and improving the working environment.
  5. High Degree of Automation
    It easily enables continuous and automated operation, ensuring stable product quality while reducing labor costs and operator workload.

The CWL-M centrifugal extractor from Zhengzhou Tiei Extraction, with its outstanding performance, has brought a revolutionary upgrade to the extraction and separation process of toluene and hydrochloric acid solution. It is not only a key piece of equipment for improving product quality and yield, but also a smart choice for enterprises seeking energy conservation, reduced consumption, and green production.
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