Tower type extraction device, tower extraction process method and application

A technology of extraction equipment and process method, which is applied in chemical instruments and methods, extraction water/sewage treatment, liquid solution solvent extraction, etc., can solve the problems of low flux of extraction tower, etc. The effect of increased flooding speed

Inactive Publication Date: 2016-06-15
上海颐润科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0017] The purpose of the present invention is to provide a tower extraction equipment and tower extraction process and application, mainly to solve the problem of low extraction tower flux in the prior art

Method used

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  • Tower type extraction device, tower extraction process method and application
  • Tower type extraction device, tower extraction process method and application
  • Tower type extraction device, tower extraction process method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] In the vibrating sieve plate extraction tower with an inner diameter of φ50mm, the sieve plate has a sieve hole diameter of φ6mm, an opening ratio of 48%, a plate spacing of 35mm, a gap of 0.2mm between the plate and the column, an amplitude of 9mm, and a vibration frequency of 100 times / minute. TBP-kerosene (TBP mass fraction 80%) is used as the dispersed phase, brine is used as the continuous phase, and the lithium ion is extracted by using this equipment. The tower body is made of glass, and the main shaft and sieve plate in the tower body are the two-phase dispersed contact materials described in the present invention. Since the continuous phase is the water phase and the dispersed phase is the organic phase, the main shaft and sieve plate materials in the tower are selected from ethylene vinyl alcohol copolymer (EVAL) materials with strong hydrophilic properties. When the vibrating sieve tray extraction tower is started up, the continuous phase is firstly filled i...

Embodiment 2

[0049] The packed extraction tower with an inner diameter of φ50mm is filled with φ10 Raschig ring packing, and the specific surface area is a p =352m 2 / m 3 , porosity ε=0.616. Tower material selects glass, the brine after the continuous phase flotation of boric acid, the dispersed phase is the mixed solvent of 2-ethylhexanol and kerosene (volume ratio is 1:1), the concentration of boron in the brine is 8g / L (in B 2 o 3 ), the boron in the brine is extracted by using a packed tower using 2-ethylhexanol as an extractant. Raschig ring packing choose PP material and EVAL material. When the continuous phase chooses the water phase as the continuous phase, choose a hydrophilic material, that is, the EVAL material is the Raschig ring filler; when the continuous phase is the organic phase, choose the lipophilic material, that is, the PP material is the Raschig ring filler. High fluxes can be achieved due to the good wetting properties of both materials to the corresponding cont...

Embodiment 3

[0053] In the vibrating sieve plate extraction tower with an inner diameter of φ50mm, the sieve plate has a sieve hole diameter of φ3mm, an opening rate of 48%, a plate spacing of 50mm, a gap of 0.2mm between the plate and the column, an amplitude of 9mm, and a vibration frequency of 150 times / min. Methyltrioctylammonium chloride-o-dichlorobenzene (mass fraction of o-dichlorobenzene 80%) is used as the organic phase, lithium chloride lithium hydroxide solution is the water phase, and this equipment is used to extract the lithium 7 element. The material of the tower body is glass. The continuous phase is an organic phase, and the dispersed phase is an aqueous phase. In this system, the aqueous phase is the light phase with a lithium concentration of 3.5 mol / L, and the organic phase is the heavy phase. The water phase is injected into the tower from the lower part of the tower through the peristaltic pump, and rises by the buoyancy force; the organic phase is injected from the...

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Abstract

The invention discloses a tower type extraction device, a tower extraction process method and an application. The tower extraction process method comprises the steps: according to a selected extraction system, determining that an organic phase or an aqueous phase entering the tower is used as a continuous phase or a dispersed phase; when the organic phase entering the tower is the continuous phase and the aqueous phase is the dispersed phase, a two-phase dispersed contact material in the tower is selected from an oleophylic material; and when the aqueous phase entering the tower is the continuous phase and the organic phase is the dispersed phase, the two-phase dispersed contact material in the tower is selected from a hydrophilic material. In the process method, according to the property of the continuous phase in the extraction process, a material has good affinity with the continuous phase is used as the two-phase dispersed contact material, so the two-phase dispersed contact material is infiltrated by the continuous phase preferentially, and the dispersed phase cannot be coagulated and aggregated in the two-phase dispersed contact material. Therefore, the retention amount of the dispersed phase in the tower can be reduced accordingly, the two-phase reverse flow resistance is decreased, the flooding velocity is increased, and thus the tower flux is also increased.

Description

technical field [0001] The invention belongs to the technical field of extraction in chemical industry separation, and in particular relates to a tower-type extraction equipment, a tower extraction process and its application. Background technique [0002] Solvent extraction is widely used in industry to separate the desired substances. The principle of the solvent extraction method is to mix the extractant, diluent, and solvent evenly as the organic phase, and mix the organic phase and the water phase with each other. The two phases are separated by density difference. Since the appropriate extraction agent and extraction equipment can be selected according to the separation object and requirements, the solvent extraction method has strong operability, high selectivity, obvious separation effect, easy realization of large-scale production, controllable cost, simple and convenient operation, etc. advantage. Because of these many advantages of solvent extraction, solvent e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D11/04C02F1/26C01D15/00C01D17/00
CPCB01D11/04C01D15/00C01D17/00C02F1/26
Inventor 何涛张冉宋健峰邢利欣殷勇王周为赵宝龙李雪梅田苗苗刘仁啸陈颖肖婷婷窦鹏佳金桐辉黄涛
Owner 上海颐润科技有限公司
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