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A Liquid-Liquid Separation Method Based on the Differential Force Field of Fiber Bundle Solid Surface

A solid surface, fiber bundle technology, applied in separation methods, immiscible liquid separation, liquid separation, etc., can solve problems such as device blockage, and achieve the effect of increasing the separation area and increasing the separation effect.

Active Publication Date: 2020-07-28
WUHAN INSTITUTE OF TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process only uses the hydrophilic surface of the fiber to coalesce the water phase. In the actual application process, especially in the process of dehydration and desalination of crude oil, it is easy to cause blockage of the device.

Method used

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  • A Liquid-Liquid Separation Method Based on the Differential Force Field of Fiber Bundle Solid Surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Fiber bundle A is made of copper fiber bundle, which is mixed with NaOH and K 2 S 2 o 8 After soaking in the solution, a uniform needle-shaped copper hydroxide film is formed on the surface of Cu, and then soaked in ethanol solution of n-dodecyl mercaptan to obtain copper fiber bundles with superhydrophobicity and superlipophilicity. The contact angle between copper fiber bundle and water is 151°.

[0031] For fiber bundle B, choose stainless steel fiber bundles, and coat the surface with a thermosetting resin solution. After the solvent evaporates, spray silicon carbide powder on the surface, and heat and cure to form a silicon carbide hydrophilic and oleophobic surface coating.

[0032] According to the technical principle and scheme of this patent, the fiber bundles A and B after surface modification are figure 1 The relative arrangement allows the oil-water mixture to pass between the fiber bundles A and B. Due to the difference in the surface force field of the ...

Embodiment 2

[0034] Fiber bundle A uses copper fiber bundles, etches them with 4mol / L nitric acid solution for 4min, and then soaks them in cetyl mercaptan with a concentration of 1mmol / L for 1hr to make superhydrophobic and superoleophilic copper The contact angle between the net and the copper fiber bundle and water is kept above 150°.

[0035] For fiber bundle B, select stainless steel fiber bundles, and coat the surface with a thermosetting resin solution. After the solvent evaporates, spray silicon dioxide powder on the surface, heat and cure to form a silicon dioxide hydrophilic and oleophobic surface coating.

[0036] According to the technical principle and scheme of this patent, the fiber bundles A and B after surface modification are figure 1 The relative arrangement allows the oil-water mixture to pass between the fiber bundles A and B. Due to the difference in the surface force field of the surface of A and B to the oil and water, different adhesion forces are generated, and th...

Embodiment 3

[0038] Fiber bundle A is made of stainless steel fiber bundles, and a layer of vertically arranged carbon nanotubes is deposited on the stainless steel by thermal chemical vapor deposition. Since the carbon nanotubes themselves are hydrophobic, they have superhydrophobicity.

[0039] For fiber bundle B, ABS resin fiber bundles are selected, and the surface is sprayed with polyvinylpyrrolidone solution to form a hydrophilic and oleophobic surface coating.

[0040] According to the technical principle and scheme of this patent, the fiber bundles A and B after surface modification are figure 1 The relative arrangement allows the oil-water mixture to pass between the fiber bundles A and B. Due to the difference in the surface force field of the surface of A and B to the oil and water, different adhesion forces are generated, and the liquid that passes through is collected and rested to achieve oil-water separation.

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Abstract

The invention discloses a liquid-liquid separation method constructed by force field differences on the solid surfaces of fiber bundles. The liquid-liquid separation method comprises the following steps: a to-be-separated oil-water mixed liquid flows through an interval between the fiber bundle A and the fiber bundle B, wherein the surfaces of the fiber bundle A and the fiber bundle B respectivelyhave lipophilic hydrophobicity and hydrophilic lipophobicity; different adhesive forces are generated by means of surface force field differences of the fiber bundle A and the fiber bundle B for theoil-water mixture; the passed liquid is collected and kept still to realize oil and water separation. The separation method disclosed by the invention not only comprises the processes of coalescence and separation of dispersed phases, but also comprises processes of coalescence and separation of continuous phases, thereby shortening the separation time, improving the separation effect and having good effects in the oil and water separation process, the demulsification process and the extraction process.

Description

technical field [0001] The invention specifically relates to a liquid-liquid separation method constructed by the difference of the force field on the solid surface of the fiber bundle. Background technique [0002] All kinds of physical and chemical changes in the process of material preparation and use are gradually carried out from the surface of the material to the inside of the material, and the progress of these processes depends on the surface structure and properties of the material. The volume of various materials that people usually encounter and use is limited, that is, the surface of the material is always exposed to the medium in contact with it. A series of physical and chemical reactions occur on the contacting interface more or less quickly. The root cause of the surface phenomenon is that the particle arrangement on the surface of the material is different from that inside the material, and the surface of the material is in a high-energy state. [0003] Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D17/04
CPCB01D17/047
Inventor 袁军陈雪马晓梦程健张富青
Owner WUHAN INSTITUTE OF TECHNOLOGY