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Oil-water separation pipe with hydrophobic and oleophylic surface and preparation method and application thereof

A technology of oil-water separation, hydrophobic and lipophilic, which is applied in separation methods, immiscible liquid separation, liquid separation, etc. It can solve the problems of inability to efficiently and quickly treat emulsified oily wastewater, fewer separation cycles, and continuous separation. Low cost, low price, low cost effect

Active Publication Date: 2021-01-15
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This measure mainly utilizes bacterial cells to demulsify, but has the defects of low efficiency and long period.
In addition, the current membrane separation technology is often used for emulsion separation containing surfactants, literature Environ Sci Technol2005, 39 (19), 7684-7691, Angewandte Chemie-International Edition 2014, 53 (3), 856-860 and Acs Appl Mater Inter 2018, 10(18), 16183-16192 all adopt the membrane separation method, but the membrane separation method has the problems that the membrane is easy to foul and cannot be separated continuously
All in all, the traditional separation methods, especially in the separation of surface-active oil-water emulsions, have poor performance, fewer separation cycles, high energy consumption, secondary pollution, etc., and cannot efficiently and quickly treat emulsified oily wastewater.

Method used

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  • Oil-water separation pipe with hydrophobic and oleophylic surface and preparation method and application thereof
  • Oil-water separation pipe with hydrophobic and oleophylic surface and preparation method and application thereof
  • Oil-water separation pipe with hydrophobic and oleophylic surface and preparation method and application thereof

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Effect test

Embodiment 1

[0058] (1) Mix the PDMS pre-polymerization solution and the initiator Dow Corning 184 at a mass ratio of 10:1, discharge the air bubbles, pour it into an empty groove of 10cm*6cm*1cm, put it in an oven, and cure it at 80°C for 4 hours to obtain PDMS flakes;

[0059] (2) with CO 2 A type laser punches holes on the PDMS sheet obtained in step (1), the laser power is set to 80%, and repeats twice; the diameter of a single laser spot is set to 0.3 millimeters, and the distance between the laser spots is 0.6 millimeters, which are staggered along the long axis Cloth, long axis 80 millimeters, short axis 19 millimeters arrayed tapered hole matrix; made polydimethylsiloxane template with arrayed tapered holes;

[0060] (3) Preparation of epoxy resin glue: select commercially available epoxy resin glue, for example, Kangda New Material Company, including A and B two tubes, A tube is epoxy resin, B tube is curing agent; A tube, B tube Mix the glue evenly with a mass ratio of 1:1.

...

Embodiment 2

[0068] (1) Mix the PDMS pre-polymerization solution and the initiator Dow Corning 184 at a mass ratio of 10:1, discharge the air bubbles, pour it into an empty groove of 10cm*6cm*1cm, put it in an oven, and cure it at 80°C for 4 hours to obtain PDMS flakes;

[0069] (2) with CO 2 A type laser punches holes on the PDMS sheet obtained in step (1), the laser power is set to 60%, and repeats twice; the diameter of a single laser spot is set to 0.3 millimeters, and the distance between the laser spots is 1.5 millimeters, which are staggered along the long axis Cloth, long axis 80 millimeters, short axis 19 millimeters arrayed tapered hole matrix; made polydimethylsiloxane template with arrayed tapered holes;

[0070] (3) Preparation of epoxy resin glue: select commercially available epoxy resin glue, for example, Kangda New Material Company, including A and B two tubes, A tube is epoxy resin, B tube is curing agent; A tube, B tube Mix the glue evenly with a mass ratio of 1:1.

...

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Abstract

The invention discloses an oil-water separation pipe with a hydrophobic and oleophylic surface and a preparation method and application thereof. The oil-water separation pipe comprises a metal net substrate, a conical array constructed on the metal net substrate and made of epoxy resin and copper-containing nanorods wrapping the surface of the conical array, the conical height of the conical arrayranges from micron to millimeter, the distance between every two adjacent cones ranges from microns to millimeters, and the surface of the oil-water separation pipe is hydrophobic. The oil-water separation pipe material with the hydrophobic and oleophylic surface does not contain toxic and harmful substances, and is environmentally friendly, easy to clean, capable of being repeatedly used and good in stability. When emulsion separation of surfactant-containing oily wastewater is carried out, the method has the advantages of good emulsion separation effect on surfactant-coated micron-sized oildrops, high separation speed, high oil-water separation efficiency, continuous separation, low cost, low energy consumption, no need of adding other chemical reagents and the like.

Description

technical field [0001] The invention relates to the technical field of functional materials, more specifically, to an oil-water separation tube with a hydrophobic and lipophilic surface, a preparation method and application thereof. Background technique [0002] With the improvement of environmental protection requirements, the treatment of oily wastewater has been paid more and more attention. The annual discharge of oily wastewater in my country is as high as hundreds of millions of tons. The direct discharge of untreated oil-water emulsion will not only have a fatal impact on the environment and human health, but also cause a large amount of petroleum resources. waste and economic loss. Therefore, the problem of oil-water separation in oil-water emulsion has become one of the problems that need to be solved urgently in our country. Due to its small size and high stability, the oil-water emulsion has become a major difficulty in oil-water separation, and a large amount of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022
CPCB01D17/02
Inventor 王兵李衎江雷
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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