Filler extraction tower for gradient fractionating separation of large phase ratio system, and extraction method thereof

A technology of fractional separation and extraction tower, which is applied in the direction of liquid solution solvent extraction, etc., and can solve the problem of unsuitable emulsification extraction system

Inactive Publication Date: 2012-10-17
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this device is not suitable for easy emulsification extraction system

Method used

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  • Filler extraction tower for gradient fractionating separation of large phase ratio system, and extraction method thereof

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Experimental program
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Effect test

Embodiment 1

[0065] Such as figure 1 As shown, a packed extraction tower with a gradient fractionation separation of a large phase-easy emulsification system, the middle section of the tower body 18 is composed of four sub-cylinders 20, and the hydrophobic fillers from top to bottom are: silicone rubber, Polytetrafluoroethylene, polyacrylonitrile, phenolic resin, polypropylene, and hydrophilic fillers from top to bottom are: glass powder, ceramic powder, hydrophilic polyurethane foam, stainless steel wire mesh, nickel-titanium alloy wire mesh, extraction system The light phase is nonane, the heavy phase is polyethylene glycol aqueous solution, and the phase volume ratio of the light and heavy two phases countercurrent is 1:100. The light phase is used as the dispersed phase, which flows in from the light phase material inlet 15, and the heavy phase flowing countercurrently downwards in the tower is stirred and mixed in the middle section cylinder 18. During the process of upward flow, the...

Embodiment 2

[0067] Such as figure 1 As shown, a packed extraction tower with a gradient fractionation separation of a large phase-easy emulsification system, the middle section of the tower body 18 is composed of four sub-cylinders 20, and the hydrophobic fillers from top to bottom are: silicone rubber, Polytetrafluoroethylene, polyacrylonitrile, phenolic resin, polypropylene, and hydrophilic fillers from top to bottom are: glass powder, ceramic powder, hydrophilic polyurethane foam, stainless steel wire mesh, nickel-titanium alloy wire mesh, extraction system The light phase is a kerosene solution of 30% by volume of trialkylphosphine oxide, and the heavy phase is an aqueous ammonium sulfate solution of polyethylene glycol with a weight percentage of 20%. The heavy phase is used as the dispersed phase, and it flows in from the heavy phase material inlet 13, and the light phase flowing upwards countercurrently in the tower is stirred and mixed in the middle section cylinder 18. In the pr...

Embodiment 3

[0069] Such as figure 1 As shown, a packed extraction tower with a gradient fractionation separation of a large phase-easy emulsification system, the middle section of the tower body 18 is composed of four sub-cylinders 20, and the hydrophobic fillers from top to bottom are: silicone rubber, Polytetrafluoroethylene, polyacrylonitrile, phenolic resin, polypropylene, and hydrophilic fillers from top to bottom are: glass powder, ceramic powder, hydrophilic polyurethane foam, stainless steel wire mesh, nickel-titanium alloy wire mesh, extraction system The light phase is nonane, the heavy phase is polyethylene glycol aqueous solution containing phenol, nitrophenol, p-nitrophenol, and o-nitrophenol, and the phase volume ratio of light and heavy two-phase countercurrent is 1:50. The light phase is used as the dispersed phase, which flows in from the light phase material inlet 15, and the heavy phase flowing countercurrently downwards in the tower is stirred and mixed in the middle s...

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Abstract

The present invention discloses a filler extraction tower for gradient fractionating separation of a large phase ratio system, and an extraction method thereof. The tower body of the extraction tower is formed by sequentially connecting an upper section cylinder, a middle section cylinder and a lower section cylinder, wherein the middle section cylinder is provided with a double-layer mesh filler layer, the upper filler layer of the double-layer mesh filler layer is a hydrophilic mesh filler layer, and the lower filler layer of the double-layer mesh filler layer is a hydrophobic mesh filler layer. According to the present invention, hydrophilicity and hydrophobicity of the filler layer are gradiently and alternately arranged inside the middle section cylinder from top to bottom along the vertical direction of the tower body, such that repeated gathering and phase forming of the dispersion phase of the easily-emulsified system can be achieved in the a middle section cylinder filler layer so as to accelerate separation rate of the two phases of the easily-emulsified system and improve stage efficiency of the tower body units; the method is particularly suitable for performing rapid clarification phase separation operation on the two phases of the light phase and the weight phase under the condition of the large phase ratio difference or the large flow ratio difference; and with the method, gradient extraction and fractionating separation of the complex system containing a plurality of different hydrophilic components and hydrophobic components can be achieved in the tower.

Description

technical field [0001] The invention belongs to the technical field of extraction and chemical separation, and relates to a large-phase liquid-liquid two-phase continuous extraction device and an extraction method. Specifically, the present invention relates to a packed extraction tower and an extraction method for gradient fractional separation of a large phase system, especially The invention relates to a packed extraction tower and an extraction method for gradient fractionation separation of a large phase-emulsification system. Background technique [0002] Liquid-liquid extraction is an important chemical separation technology. It has the advantages of high separation efficiency, strong material adaptability, low energy consumption, easy operation, and large-scale continuous production. It is widely used in hydrometallurgy, petrochemical industry, new energy , biomedicine, environmental engineering, natural product extraction, new material preparation and other fields a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D11/04
Inventor 黄焜刘会洲
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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