An adsorption extraction tower
An extraction tower and adsorption technology, which is applied in the field of liquid-liquid extraction and separation, can solve the problems of increased floor area, intensified back-mixing, and reduced back-mixing rate, so as to improve extraction efficiency, reduce equipment cost, and reduce back-mixing rate.
Active Publication Date: 2022-07-12
湖南化工设计院有限公司
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Problems solved by technology
However, traditional extraction towers have the disadvantage of lower extraction efficiency due to back-mixing
Back mixing leads to a decrease in extraction efficiency. In order to obtain a certain product purity and extraction recovery, the industry has to increase the extraction solvent ratio or use multi-stage extraction.
However, the resulting problems are: increasing the extraction solvent ratio leads to an increase in the operating load of the extractant recovery section; the use of multi-stage extraction directly leads to increased equipment investment, increased floor space, and increased operational complexity
This technical solution improves the dispersion and mass transfer effect by setting the turntable, and the high-speed dispersion of the turntable leads to intensified back-mixing, but only by setting the ring partition to reduce the back-mixing rate, and the openings on the ring partition cannot prevent the upper and lower liquids from interacting. String, resulting in the back-mixing of the circulation channel still exists, so that the effect of reducing the back-mixing rate is limited
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[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0023] Refer to the attached Figure 1-3 , this embodiment includes a tower body 1, the tower body 1 is provided with a crushing device for crushing the liquid, and the tower body 1 is sequentially provided with a light phase outlet 11, a heavy phase inlet 12, a light phase inlet 13 and a heavy phase outlet from the top to the bottom. The outlet 14, the column body 1 between the heavy phase inlet 12 and the light phase inlet 13 is vertically spaced in a detachable manner with a plurality of adsorption devices 1 2 for multi-stage extraction of the liquid, and the adsorption device 1 2 includes A plurality of vertically arranged ascending members 21 and descending members 22, the ascending member 21 is provided with a light-phase adsorption layer 211, and the light-phase adsorption layer 211 makes the light phase in the liquid circulate u...
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An adsorption-type extraction tower includes a tower body, a crushing device for crushing liquid is arranged in the tower body, and the tower body is sequentially provided with a light phase outlet, a heavy phase inlet, a light phase inlet and a heavy phase outlet from the top to the bottom. A number of adsorption devices 1 for multi-stage extraction of liquid are distributed vertically in the tower body between the phase inlet and the light phase inlet, and the adsorption device 1 includes a plurality of vertically arranged ascenders and descenders. The upper part is provided with a light phase adsorption layer, and the lower part is provided with a heavy phase adsorption layer. The present invention can perform multi-stage extraction on the liquid through a plurality of adsorption devices provided with the upper part and the lower part, and realizes the separation and unidirectional flow of the extraction light phase and the extraction heavy phase, and reduces the back-mixing rate in the extraction process. Coupled with the high mass transfer of the stirring disk rotation, the extraction efficiency is improved.
Description
technical field [0001] The invention relates to the technical field of liquid-liquid extraction and separation, in particular to an adsorption type extraction tower. Background technique [0002] As an industrial liquid separation equipment, extraction tower has been widely used in chemical, petrochemical, pharmaceutical, metallurgy, nuclear industry, food, environmental protection and other industries because of its unique separation characteristics and separation effect. In order to optimize the extraction performance of extraction towers, different types of extraction towers have been developed in industry, among which sieve tray extraction towers, packed extraction towers, reciprocating sieve tray extraction towers, rotating disc extraction towers, and pulse extraction towers are widely used. However, traditional extraction towers all have the disadvantage that the extraction efficiency is reduced due to back mixing. Back-mixing leads to a decrease in extraction efficie...
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Patent Timeline
Login to View More IPC IPC(8): B01D11/04B01D17/022
CPCB01D11/0426B01D11/04B01D17/0202Y02P10/20
Inventor吴辉
Owner湖南化工设计院有限公司