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Wheel disk type liquid-liquid extraction tower

An extraction tower and disc-type technology, applied in the field of liquid-liquid extraction tower, can solve the problems of easy clogging holes, industrial application restrictions, complex process flow, etc., achieve convenient operation and maintenance, fast mass transfer speed, and improve extraction efficiency Effect

Inactive Publication Date: 2014-12-24
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Luo Guangsheng and others studied the influence of the size of dispersed phase droplets on the extraction process by using the microporous dispersion method, and proposed a multi-stage countercurrent micro-extraction system (CN 102059001A). The extraction system has high separation efficiency, but the process is relatively complicated , especially when the feed liquid contains solid impurities, it is easy to block the holes, and the industrial application is limited

Method used

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  • Wheel disk type liquid-liquid extraction tower
  • Wheel disk type liquid-liquid extraction tower
  • Wheel disk type liquid-liquid extraction tower

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In this embodiment, the structure of the disc type liquid-liquid extraction tower is as follows figure 1 , figure 2 shown, including the first clarification stage L 2 , extraction section L 1 , the second clarification section L 3 , power unit 1 and main shaft 2, extraction section L 1 , the first clarification section L 2 and the second clarification section L 3 The shells are all cylindrical, the extraction section is located between the first clarification section and the second clarification section, the power unit 1 is a speed-regulating motor, the upper end of the main shaft is connected with the power output shaft of the speed-regulating motor, and the lower end Through the first clarification section L 2 into the extraction section L 1 Inner cavity, installed in the extraction section L 1 On the support seat 9 provided at the bottom; the first clarification section L 2 The side wall of the housing is provided with a feed liquid inlet 12 and an extract...

Embodiment 2

[0032] In this embodiment, the wheel-type liquid-liquid extraction tower with the structure described in Example 1 is used to extract wet-process phosphoric acid. 16. The combination of raffinate storage tank 17 and two pumps 18 is as follows Image 6 As shown, from the first clarification section L of the extraction tower 2 The feed liquid inlet 12 introduces the feed liquid, from the second clarification section L of the extraction tower 3 The extraction agent inlet 10 introduces the extraction agent, from the first clarification section L of the extraction tower 2 The extraction solution outlet 3 discharges the extraction solution, from the second clarification section L of the extraction tower 3 The raffinate outlet 11 discharges the raffinate.

[0033] In this embodiment, the mass concentration of phosphoric acid in the phosphoric acid feed liquid is 55%, and a mixture of tributyl phosphate and aviation kerosene is used as the extraction agent. The volume ratio of trib...

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Abstract

The invention relates to a wheel disk type liquid-liquid extraction tower, which comprises a first clarification section, an extraction section, a second clarification section, a powder device and a main shaft. The extraction section is positioned between the first clarification section and the second clarification section. The upper end of the main shaft is connected with a power output shaft of the power device. The lower end of the main shaft penetrates through the first clarification section, extends into a cavity of the extraction section, and is installed on a support seat arranged on the bottom of the extraction section. The extraction section comprises at least two extraction chambers, wherein a housing of the extraction section and two annular horizontal separation plates arranged on the inner wall of the housing close to form the extraction chambers, and a wheel disk is arranged inside each extraction chamber, and is arranged on the main shaft. The housing wall of the first clarification section is provided with a material liquid inlet and an extraction liquid outlet. The housing wall of the second clarification section is provided with an extraction agent inlet and an extraction residue liquid outlet.

Description

technical field [0001] The invention belongs to the technical field of mass transfer and separation equipment in the chemical industry, and relates to a liquid-liquid extraction tower. Background technique [0002] Extraction is an important method for separating liquid mixtures, and it is widely used in many fields such as chemical industry, petrochemical industry, hydrometallurgy, atomic energy industry, biopharmaceutical and food industry. In the extraction operation, there are many factors that affect the mass transfer process, among which the contact area of ​​the two phases is the first element. Expanded by mass area. The traditional extraction technology mainly breaks one phase into droplet groups dispersed and suspended in another continuous phase through mechanical stirring and shearing force, and the feed liquid often has relatively high viscosity and high surface tension. The speed of droplet polymerization is very fast, the energy consumption required for liqui...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D11/04
Inventor 叶世超祝杰辛扬扬李军钟本和
Owner SICHUAN UNIV