Chemical plants produce a large amount of chemical organic wastewater when processing finished products. This type of wastewater contains multiple components and a high content of organic matter. This type of wastewater needs to be pre-treated. If it is discharged directly, it will cause harm to the environment and waste resources. Today we will introduce the use of CWL-M centrifugal extractor to extract ethylene glycol from wastewater, extract and recycle it.
Ethylene glycol is a colorless transparent liquid that is miscible with water, ethanol, ether, glycerol, acetone, and N,N-dimethylformamide. It is commonly used as a coating solvent, penetrant, leveling agent, and organic synthesis intermediate. Currently, the method used for the extraction of ethylene glycol is solvent extraction, which uses the centrifugal extractor for operation.
The reason why solvent extraction is used is that this extraction method has high extraction efficiency, high purity and easy operation. The centrifugal extractor is selected as the equipment because centrifugal extraction equipment relies on centrifugal force for mixing and separation. Compared with traditional mixer settlers and extraction towers, centrifugal extractors use motors to drive the drum to rotate at high speed. Two liquids with different densities and immiscible with each other complete mixing and mass transfer under the shear force generated by the rotation of the drum or blades, and are quickly separated under the centrifugal force generated by the high-speed rotation of the drum.
Operation process of extracting ethylene glycol from chemical wastewater
When using the ethylene glycol extraction equipment--centrifugal extractor, the chemical wastewater and the extractant are injected into the centrifugal extractor from different inlets in a certain proportion. With the help of the rotation of the drum, the two phases are quickly mixed and dispersed through the turbine disc and impeller, and the two-phase solution is fully transferred to complete the mixing and mass transfer process. The mixed liquid is then separated from the two phases by the centrifugal force of the drum and discharged from the machine body to achieve the extraction of ethylene glycol.
The CWL-M centrifugal extractor from Zhengzhou Tiei Extraction is used because it has significant advantages in the pretreatment of chemical organic wastewater:
- The CWL-M centrifugal extractor can quickly and efficiently separate ethylene glycol from wastewater, significantly improving the treatment efficiency of wastewater.
- The extractants used in the extraction process are mostly recyclable organic solvents, which reduces pollution to the environment.
- The CWL-M centrifugal extractor has a large processing capacity and low energy consumption, which reduces the cost of wastewater treatment and improves the overall economic benefits.
The above is an introduction to the extraction of ethylene glycol from wastewater using the centrifugal extractor. The centrifugal extractor has shown excellent performance and broad application prospects in the field of ethylene glycol extraction from wastewater. If you also have such a project, you can consult us, and we will provide you with a full range of technical services.
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