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Oil-water separation filtering structure and production method thereof

A technology of oil-water separation and filtration structure, which is applied in the direction of separation methods, liquid separation, chemical instruments and methods, etc. It can solve the problems affecting the efficiency of micro-nano emulsified oil-water separation, the combination of different wettability surfaces, and the preparation method requires high-temperature baking and other problems, to achieve the effect of easy operation, excellent pressure resistance and low cost

Inactive Publication Date: 2019-04-30
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention uses the prepared superhydrophilic, underwater superoleophobic copper mesh and superhydrophobic lipophilic copper mesh to achieve oil-water separation, but the preparation method requires high temperature baking, the preparation is relatively complicated, and the separation is only through the special wettability surface The oil-water mixture does not use a combination of different wettability surfaces, so an excessively large copper mesh aperture will greatly affect the separation efficiency of micro-nano-scale emulsified oil-water

Method used

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  • Oil-water separation filtering structure and production method thereof
  • Oil-water separation filtering structure and production method thereof
  • Oil-water separation filtering structure and production method thereof

Examples

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Effect test

Embodiment 1

[0036] A method for preparing an oil-water separation filter structure, comprising the steps of:

[0037] 1) Add silica particles and hexamethyldisilazane into a round-bottomed flask, and after stirring at 80°C for 2 hours, it will be modified into superhydrophobic silica particles; the hydrophobicity in all embodiments of the present invention Particle modification is prepared according to this method.

[0038]2) Take the hydrophilic silica particles with a particle size of 25-50 μm, and take the hydrophobic silicon dioxide particles with a particle size of 25-50 μm modified by hexamethyldisilazane, and mix them in a mass ratio of 8:1 The hydrophilic silica particles and the hydrophobic silica particles are mixed, and after adding ethanol, stir in a stirrer for 5 minutes.

[0039] 3) Fix a sand-type glass column with a pore diameter of 25 μm on an iron stand. Pour the mixed particles prepared in step 1) together with ethanol into the column; let stand to make the hydrophili...

Embodiment 2

[0049] A method for preparing an oil-water separation filter structure, comprising the steps of:

[0050] 1) Mix the hydrophilic sand with a particle size of 200-250 μm and the hydrophobic sand with a particle size of 200-250 μm modified with octadecyldimethylchlorosilane at a mass ratio of 1:99, and add ethanol to the mixer Stir for 5 minutes;

[0051] 2) Install a stainless steel support plate with a hole diameter of 200 μm in the channel of the ceramic tube and fix the ceramic tube on the iron stand. Pour the mixed particles prepared in step 1 together with ethanol into the tube, and let it stand to make the hydrophilic sand and hydrophobic sand settle into an oil-water separation medium layer;

[0052] 3) Hydrophilic sand and hydrophobic sand are deposited on the support plate in the ceramic tube by gravity, that is, the filling of the separation medium is completed, and the height of the separation medium is 10cm.

[0053] figure 2 It is a schematic diagram of the str...

Embodiment 3

[0056] A method for preparing an oil-water separation filter structure, comprising the steps of:

[0057] 1) Mix the hydrophilic ore with a particle size of 30-60 μm and the hydrophobic ore with a particle size of 50-100 μm modified with dodecyltrichlorosilane at a mass ratio of 9:1, add ethanol and stir in a stirrer for 5 minutes ;

[0058] 2) Install a perforated stainless steel support plate with a hole diameter of 60 μm in the copper tube channel and fix it on the iron stand. Pour the mixed ore prepared in step 1 together with ethanol into the tube; let stand to make the mixed ore precipitate into an oil-water separation medium layer;

[0059] 3) Hydrophilic ore and hydrophobic ore are deposited on the support plate of the plastic pipe by gravity, that is, the filling of the separation medium is completed, and the height of the separation medium is 4cm.

[0060] Take 3g of Tween 80 and place it in a beaker, add 500mL of deionized water and 10mL of chloroform, add a magne...

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Abstract

The invention discloses an oil-water separation filtering structure and a production method thereof. The oil-water separation filtering structure comprises a filter device main body, the filter devicemain body is provided with a filtering channel, the filtering channel is provided with a perforated support plate, the perforated support plate of the filtering channel is filled with an oil-water separation medium layer, and the oil-water separation medium layer is a mixture of hydrophilic particles and hydrophobic particles; the hydrophilic particles are one or more of silica, sands, ore and attapulgite; and the hydrophobic particles are one or more of hexamethyldisilazane modified silica, sands, ores and attapulgite. The oil-water separation filtering structure has the advantages of simpleproduction process, environmentally-friendly raw materials, low cost and good recycling efficiency, and allows the separation efficiency of emulsified water in oil to reach up to 99.99% and the oil content in the water separated from the emulsified water in oil to be as low as 5 ppm.

Description

technical field [0001] The invention relates to the technical field of oil-water separation, in particular to an oil-water separation filter structure and a preparation method thereof, belonging to the technical field of chemical engineering and functional materials. Background technique [0002] The separation of emulsified oil-water has always been an important research direction in the field of oil-water separation. At the same time, in industrial production, the discharge of emulsified oily wastewater will cause environmental pollution, especially the pollution of water resources. In the field of fuel oil, the purity of fuel oil has always been one of the important factors affecting the reliability and service life of aircraft, internal combustion engines, ships and other power plants. However, in the traditional oil-water separation technology, there are still many problems in the separation of emulsified oil-water, such as insufficient separation efficiency, high energ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022B01D17/025B01D17/04
CPCB01D17/0202B01D17/0208B01D17/041
Inventor 文秀芳曾新娟杨康铨皮丕辉徐守萍程江
Owner SOUTH CHINA UNIV OF TECH
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