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A device and method for enhancing liquid-liquid extraction

An enhanced liquid and extraction technology, applied in the field of liquid-liquid extraction, can solve the problems of low extraction efficiency, large amount of extraction phase, and large volume, and achieve the effect of high extraction efficiency, small amount of extraction agent, and small volume

Active Publication Date: 2022-03-01
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the shortcomings of existing traditional sieve plate extraction towers, spray extraction towers and other extraction equipment with large volume, low extraction efficiency, and large amount of extraction phase, the present invention provides a device and method for intensifying liquid-liquid extraction. Dispersion and mixing extraction partly strengthens the mixing method to enhance the extraction effect

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  • A device and method for enhancing liquid-liquid extraction
  • A device and method for enhancing liquid-liquid extraction
  • A device and method for enhancing liquid-liquid extraction

Examples

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Effect test

Embodiment 1

[0033] figure 1 It is the device for strengthening liquid-liquid extraction of the present invention, and the device for strengthening liquid-liquid extraction includes injection part 1 and the mixed extraction part 2 that is connected with described injection part 1, and described injection part 1 includes for extracting feedstock The feed tee 11, the feed tee 11 includes a first port 111, a second port 112 and a third port 113, wherein the first port 111 is used for the feed of the extracted phase, and the second port 112 is provided with a The injector 12 is used for compressing and shearing the extraction phase to generate turbulent kinetic energy, which is injected into the feed tee 11 through the injector 12, and is used for initially mixing the extracting phase and the extracted phase; the initially mixed extracting phase and The extracted phase enters the mixed extraction part 2 through the third port 113; the mixed extraction part 2 includes a mixer 21, and the mixer ...

Embodiment 2

[0048] A chemical plant uses extraction tower technology to sweeten liquefied hydrocarbons. The extraction tower is a sieve tray tower with a diameter of 1m and a height of 15m. Alkaline phenomenon. The device and method of Example 1 are used to replace liquefied hydrocarbon sweeteners, wherein the injection part adopts a single injector, the overall length of the mixer in the mixed extraction part is 2m, and the number of mixing stages is 2, using 5 as described in Example 1. Parallel processing of the device, the processing capacity can reach 25m 3 / h.

[0049] After transformation, the output of liquefied hydrocarbon sweetening has increased from 140,000 tons / year to 200,000 tons / year, and the imported mercaptan content is 2000-2500mg / m 3 liquefied hydrocarbons, the mercaptan content in the liquefied hydrocarbons after the original process is 200mg / m 3 , the content of mercaptans in liquefied hydrocarbons is 50 mg / m3 after modification 3 , to meet the treatment requirem...

Embodiment 3

[0051] In this example, the device and method described in Example 1 are used to extract ferric ions in the aqueous solution, wherein the extraction phase is an extractant prepared by mixing diphosphonate and sulfonated kerosene in a ratio of 3:7, and the extracted phase is Aqueous solution of ferric chloride, in which Fe 3+ The concentration was 100 mg / L, and the pH was adjusted to 1.86. The injection part adopts a single injector, the overall length of the mixer in the mixing extraction part is 60mm, the number of mixing stages is 3, and the processing capacity can reach 1m 3 / h.

[0052] Maintain the flow ratio of the extracted phase and the extracted phase at 10:1, investigate the extraction effect under different flow rates of the extracted phase, and measure the residual Fe in water 3+ Concentration evaluates the extraction effect, the results are shown in the table below, with the increase of the flow rate of the extracted phase, the extraction efficiency gradually in...

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Abstract

The invention provides a device for strengthening liquid-liquid extraction, the device comprises a jetting part, a mixed extraction part and a separation part, the jetting part includes a feeding tee for extracting feed, and the feeding tee The first port of the first port is used for the feed of the extracted phase, and the second port is provided with an injector for compressing and shearing the extract phase to generate turbulent kinetic energy jet feed; the mixed extraction part includes a mixer, and the mixer includes A cylindrical mixer shell, the two ends of the mixer shell are provided with an inlet section and an outlet section, and there is a spiral between the inlet section and the outlet section for strengthening the mixing of the extraction phase and the extracted phase and the extraction process section and variable section. The present invention also provides a method for enhancing liquid-liquid extraction using the device. The device and method have the characteristics of small volume, compact structure, high extraction efficiency and small amount of extraction agent, and are especially suitable for chemical, pharmaceutical, biological Liquid-liquid extraction process in other fields.

Description

technical field [0001] The invention belongs to the field of liquid-liquid extraction in chemical industry, pharmacy, biology, etc., and in particular relates to a device and method for strengthening liquid-liquid extraction. Background technique [0002] Liquid-liquid extraction is a unit operation that uses the difference in solubility of substances in solvents to transfer substances from one solvent to another. It has important applications in petrochemical, pharmaceutical, biological and other industrial fields, and in It is also increasingly used in the reprocessing of nuclear fuel for metal extraction and atomic power generation. Traditional extraction devices such as mixing settling tanks, sieve plate extraction towers, spray extraction towers, and rotary disk extraction towers are widely used, but the biggest drawbacks are large floor space and long residence time. In addition, due to the limited separation technology of traditional extraction technology, the liquid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D11/04
CPCB01D11/04
Inventor 杨强李裕东卢浩刘懿谦代品一武世汉
Owner EAST CHINA UNIV OF SCI & TECH