Centrifugal extraction machine in the application of the phenolic resin extraction of phenol wastewater
In the process of phenolic resin production, need to add ingredients of phenol, later also need to use water vapor flux into the phenolic resin with excessive phenol purification products, this creates a lot of wastewater containing phenol.
Phenolic waste water is mainly of phenol aqueous solution, waste water of the overall low calorific value, difficult to use the method of burning treatment, waste treatment is difficult.
Through the study of this kind of wastewater, found that high concentrations of phenol wastewater treatment using solvent extraction effect is best.
extraction. cwl - using days
M series centrifugal extraction machine, choose suitable extractant, the feed solution pH adjustment is 2, water-oil volume ratio of 1:1, phenol content is 44049 mg/L, extraction separation.
First two phase solution according to certain proportion into the drum and the mixing zone, formed between the shell of the rotating drum with, through the turbine disc and the impeller to make two phase mixing and dispersing quickly, two phase solution fully mass transfer, mixing and mass transfer process.
mixed liquid under the action of vortex disk into the rotary drum, in under the action of centrifugal force, after the complete separation of the two phase solution through their weir plate into the collection chamber and the tube was closed to derivation, respectively, to complete the two phase separation process.
In the process of extraction of different extraction environment will influence on the extraction effect.
a, compared to the impact on the extraction rate of
in the process of extraction, is a very important parameter, compared the extraction effects significantly.
With the increase of compared, single-stage centrifugal extraction rate increases, but the best extraction than 3:1 single-stage extraction.
2, the influence of the reuse of extraction agent on the extraction rate of
extraction agent of repeated utilization ratio is an important factor to determine the costs of extraction process, is also a high concentration of waste water containing phenol extraction phenolics process feasibility of any one of the important indicators.
Extraction process not only can cause a variety of impurities in the extractant concentration, it will also have the use of the extraction agent, and therefore difficult to realize the permanent use extraction agent.
In practice, as extraction agent increased number of repeated use, in order to ensure the higher extraction rate, dealing with the extracting agent added properly.
the place on put together is narrated, the reasonable material system and the correct extraction equipment can successful recovery of high concentration of phenol wastewater containing phenol phenolic resin production, realize resource recycling of phenols, effectively reduce the content of phenol in wastewater, reduce the pressure of subsequent processing.
related extraction equipment figure:
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