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Forced flow type quasi liquid membrane extraction separation and enrichment device and use method thereof

A separation, enrichment, flow-type technology, applied in the direction of liquid solution solvent extraction, etc., to achieve the effect of high selectivity, considerable application prospects, and high enrichment ratio

Active Publication Date: 2019-08-13
HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems existing in the existing (quasi) liquid membrane device and its operation process, the present invention provides a kind of device with high stability, fast mass transfer rate, large enrichment ratio, and convenient extraction and separation operations. The forced-flow quasi-liquid membrane extraction separation and enrichment device and its use method are especially aimed at and solve the requirements of high enrichment ratio (such as more than 1000 times) that are difficult to achieve with general separation techniques, and the small volume (50 mL ~ 10000mL) ) The problem of rapid and one-time extraction of target solute components from the raw material solution

Method used

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  • Forced flow type quasi liquid membrane extraction separation and enrichment device and use method thereof
  • Forced flow type quasi liquid membrane extraction separation and enrichment device and use method thereof
  • Forced flow type quasi liquid membrane extraction separation and enrichment device and use method thereof

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Embodiment 1 and 2

[0049] Examples 1 and 2 - Embodiments of the device according to the invention

[0050] Example 1 see figure 1 : Among them, the raw material phase (1) and the stripping phase (3) are miscible or partially miscible, and the density of the extraction phase (2) is smaller than that of the raw material phase (1) and the stripping phase (3). The extractor (4) is a cylindrical or cuboid reactor; wherein, the top of the reactor has an exhaust port (7) with a valve, a feed port (8) with a valve and a hopper, and an output pipe of the extraction phase (2) There is a discharge port (9) with a valve at the bottom of the reactor; the extraction phase (2) enters from the bottom of the container through the input pipeline, and the extraction phase (2) is blown into the container by a dispersing device, and dispersed in the raw material phase ( 1) Medium contact mass transfer; the extraction phase (2) and the raw material phase (1) are separated due to the density difference, and then the...

Embodiment 2

[0051] Example 2 see figure 2 : Wherein, the difference from Example 1 is that the density of the extraction phase (2) is larger than that of the raw material phase (1) and the stripping phase (3). This makes embodiment 2 produce corresponding structural difference with embodiment 1, see for details figure 2 . Similarly, if the density of the extraction phase (2) is larger than that of the raw material phase (1) and smaller than that of the stripping phase (3), other corresponding transformations need to be carried out: the extractor (4) adopts the structure as in Example 2, and The back extractor (5) adopts the structure as in Example 1, and the extract phase storage tank (6) adopts the structure as in Example 1.

Embodiment 3 and 4

[0052] Embodiment 3 and 4 - utilize the device of the present invention and its using method to carry out the embodiment of separation and enrichment operation

[0053] Use the device described in Example 1 to carry out the separation and enrichment operation, including the following steps: First, the start-up and enrichment process of the device is carried out in sequence according to the steps S1-S4 described in the summary of the invention, and the extraction phase (2) is used in the extractor (4), the circulation flow mode between the stripper (5) and the extract phase storage tank (6). After the set extraction time is reached, the process of static phase separation and liquid drainage is carried out according to steps S5-S7.

[0054] Among them, the purpose of Example 3 is to use the present invention to efficiently enrich low-concentration solute components: the 0.005 mg / L low-concentration Cd in the raw material phase (1) 2+ (The concentration limit of cadmium in II-IV...

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Abstract

The invention relates to a device for efficiently separating and enriching solute components in a raw material phase solution and a use method of the device. The device comprises an extraction device,a re-extraction device, an extraction phase storage tank and an extraction phase forced flowing system, wherein an extraction phase is forced by a pump to circulate and flow among the extraction device, the re-extraction device and the extraction phase storage tank, the solute components of a raw material phase are continuously transferred and enriched to form a re-extraction phase. The separation and enrichment device inherits the advantage of three-phase mass transfer in the traditional liquid membrane extraction process, the stability is more easily controlled, and the high-enrichment-ratio and high-selectivity separation requirement can be met. The separation and enrichment device and the use method thereof are suitable for efficiently separating and enriching low-concentration or high-concentration inorganic or organic solute components (such as ppb-grade Cd2+ and ppm-grade phenol) from the raw material phase. The three-phase mass transfer separation and enrichment technology which has the advantages of being simple in operation, high in stability, high in mass transfer rate, high in enrichment ratio and the like is provided.

Description

technical field [0001] The invention relates to a quasi-liquid membrane extraction, separation and enrichment device with a high enrichment ratio and an application method thereof. Background technique [0002] The traditional methods for separating and enriching target solute components from raw material liquid mainly include extraction, adsorption, membrane separation and other methods. Among them, liquid-liquid extraction includes extraction and stripping processes, and the partition coefficient of solute components between the two phases determines their separation and enrichment capabilities. To increase the distribution coefficient of the extraction (or stripping) process, it is generally necessary to increase the amount of extractant (or stripping agent). In general, extraction agents are more expensive, while stripping agents (such as acids and bases) are cheaper. Liquid membrane extraction technology combines the characteristics of extraction and membrane separati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D11/04
CPCB01D11/04
Inventor 曾乐林王国祥
Owner HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY
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