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Solvent extraction method and solvent extraction equipment

An extraction equipment and solvent technology, applied in the field of mass transfer and separation, can solve the problems of lower mass transfer ratio, lower extraction efficiency, and poor absorption of solute by the extractant, so as to improve mass transfer ratio, reduce back-mixing, and reduce volume Effect

Inactive Publication Date: 2021-08-31
YANCHENG TEACHERS UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the prior art, general extraction towers use stirring or pulse input to increase the mixing intensity of liquid and liquid, and generate a larger mass transfer specific surface through the action of external force, thereby enhancing mass transfer, but with energy input, also As a result, the extractant cannot absorb the solute very well, thereby reducing the mass transfer ratio and reducing the extraction efficiency. Therefore, we disclose a solvent extraction method and solvent extraction equipment

Method used

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  • Solvent extraction method and solvent extraction equipment
  • Solvent extraction method and solvent extraction equipment
  • Solvent extraction method and solvent extraction equipment

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Embodiment

[0031] Example: Reference figure 1 , 2 A solvent extraction equipment shown in 3 and 4 includes an extraction tower 1 and a plurality of fixed components. The inner wall of the extraction tower 1 is provided with a plurality of stirring chambers distributed at equal distances, and a plurality of stirring chambers are connected in series to form a tower-shaped structure, The extraction tower 1 can be any base structure in the prior art, such as a metal box

[0032] Sealing cylinders 22 are fixedly installed in the middle parts of the inner walls of the bottoms of the plurality of stirring chambers, and centrifugal impellers 14 are installed on the tops of the plurality of sealing cylinders 22 rotatably. Inside 22, the sealing cylinder 22 ensures that the centrifugal impeller 14 axially enters the liquid smoothly.

[0033] The tops of the plurality of centrifugal impellers 14 are provided with fixing holes, the connecting rods 23 are fixedly installed in the plurality of fixin...

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Abstract

The invention discloses a solvent extraction method and solvent extraction equipment, and relates to the field of mass transfer separation. The solvent extraction equipment comprises an extraction tower and a plurality of fixing assemblies, the inner wall of the extraction tower is provided with a plurality of stirring cavities distributed at equal intervals, the stirring cavities are connected in series to form a tower-shaped structure, a sealing cylinder is fixedly mounted in the middle of the inner wall of the bottom of each stirring cavity, and a centrifugal impeller is rotationally mounted on the outer wall of the top of each sealing cylinder. Through the arrangement of the extraction tower, the centrifugal impellers and stirring plates, a preliminarily mixed solution is sucked into the stirring cavities by the centrifugal impellers, namely, the solution is fed axially and discharged radially, at the moment, the stirring plates on the centrifugal impellers stir and mix the solution, after the stirring cavities are filled with the solution, the solution is fed axially by the centrifugal impellers above, and the work is repeated; and the multiple centrifugal impellers can increase the flow speed of liquid, at the moment, back-mixing cannot be carried out in time due to the fact that the flow speed of the liquid is too high, and the back-mixing degree can be reduced.

Description

technical field [0001] The invention relates to the field of mass transfer and separation, in particular to a solvent extraction method and solvent extraction equipment. Background technique [0002] Solvent extraction is a mass transfer separation method widely used in petrochemical, nuclear industry, medicine, environmental protection and other fields. Its working principle is to add immiscible or partially miscible liquid extractant to the mixed liquid to be separated to form a mixed The liquid-extractant two-phase system utilizes the distribution difference of each component in the mixed liquid in the two phases, so that more of the components in the mixed liquid enter the extraction phase to realize the separation of the mixed liquid. The solvent extraction method has the advantages of continuous operation, fast mass transfer rate, short production cycle, large concentration of solute and high degree of purification when multi-stage extraction is used. [0003] In the ...

Claims

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Application Information

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IPC IPC(8): B01D11/04
CPCB01D11/04B01D11/0446
Inventor 王新红
Owner YANCHENG TEACHERS UNIV
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