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Stacked cobweb composite filter paper for separating emulsified water from fuel oil and preparation method of stacked cobweb composite filter paper

A technology of emulsified water and cobwebs, applied in separation methods, chemical instruments and methods, filter paper, etc., can solve the problems of small fuel flux, poor separation performance of emulsified water, and low separation efficiency, and achieve large fuel flux and low thickness , the effect of high separation precision

Active Publication Date: 2017-12-15
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing fuel oil filter paper for emulsified water separation has the problems of low separation efficiency and small fuel flux,

Method used

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  • Stacked cobweb composite filter paper for separating emulsified water from fuel oil and preparation method of stacked cobweb composite filter paper
  • Stacked cobweb composite filter paper for separating emulsified water from fuel oil and preparation method of stacked cobweb composite filter paper

Examples

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Embodiment 1

[0033] A method for preparing a stacked spider web composite filter paper for separating emulsified water in fuel oil, the specific steps are:

[0034] The first step: dissolving lithium chloride in N, N-dimethylformamide solvent, the mass percentage of lithium chloride is 0.5%, so that it is fully dissolved; dissolving polyvinylidene fluoride powder in the above solution , heated in a water bath at 80° C. for 8 hours, and stirred on a magnetic stirrer for 24 hours to form a homogeneous and stable low-viscosity solution, and the mass percentage of the polyvinylidene fluoride was 0.1%. The surface tension of the low-viscosity solution is 20mN / m, the viscosity is 0.1mPa·s, and the conductivity is 0.01mS / cm;

[0035] Step Two: Use figure 1 In the spider web direct injection device shown, the receiving substrate is polyvinylidene fluoride nanofiber-coated paper base, the paper base is hydrophobic modified cellulose fiber filter paper, and the air permeability is 50L m -2 ·s -1 ...

Embodiment 2

[0039] A method for preparing a stacked spider web composite filter paper for separating emulsified water in fuel oil, the specific steps are:

[0040] The first step: dissolving potassium chloride in N,N-dimethylacetamide solvent, the mass percentage of the potassium chloride is 10%, so that it is fully dissolved; dissolving polysulfone particles in the above solution, 70 °C in a water bath for 3 hours, and placed on a magnetic stirrer to stir for 18 hours to form a homogeneous and stable low-viscosity solution. The mass percentage of the polysulfone is 1.2%. The surface tension of the low-viscosity solution is 26mN / m, the viscosity is 96mPa·s, and the conductivity is 5.5mS / cm;

[0041] Step Two: Use figure 1 In the spider web direct injection device shown, the receiving substrate is polyvinylidene fluoride nanofiber-coated paper base, the paper base is hydrophobic modified cellulose fiber / chemical fiber filter paper, and the air permeability of the paper base is 200L m -2 ...

Embodiment 3

[0045] A method for preparing a stacked spider web composite filter paper for separating emulsified water in fuel oil, the specific steps are:

[0046] The first step: dissolving magnesium chloride in the mixed solvent of N,N-dimethylformyl / acetone (m / m=7 / 3), the mass percentage of the magnesium chloride is 9%, so that it is fully dissolved; the poly Styrene particles were dissolved in the above solution, heated in a water bath at 55° C. for 4 hours, and stirred on a magnetic stirrer for 18 hours to form a homogeneous and stable low-viscosity solution. The mass percentage of polystyrene was 0.9%. The surface tension of the low-viscosity solution is 46mN / m, the viscosity is 98mPa·s, and the conductivity is 12mS / cm;

[0047] Step Two: Use figure 1 In the spider web direct injection device shown, the receiving substrate is polystyrene nanofiber-coated paper base, the paper base is hydrophobic modified cellulose fiber / chemical fiber filter paper, and the air permeability is 200L ...

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Abstract

The invention discloses stacked cobweb composite filter paper for separating emulsified water from fuel oil and a preparation method of the stacked cobweb composite filter paper. The stacked cobweb composite filter paper comprises a hydrophobic paper base, a stacked cobweb layer and non-woven fabric which are sequentially stacked from bottom to top, wherein a nanofiber covering layer is arranged on the surface of the hydrophobic paper base, and a pore passage with a micro-nano gradient structure is formed by the non-woven fabric and the stacked cobweb layer. The preparation method comprises steps as follows: a low-viscosity polymer solution is preliminarily atomized with a cobweb direct spraying technology and injected into metal nozzles for secondary atomization, formed small charged droplets are drafted under the action of electric field force in the flying process, a liquid film is formed and subjected to phase separation, a web is formed and finally covers and adheres to the surface of the nanofiber covering layer, and the stacked cobweb layer is formed; the non-woven fabric is composited with filter paper coated with the stacked cobweb layer, and the stacked cobweb composite filter paper is obtained. The stacked cobweb composite filter paper has the characteristics of high oil infiltration speed and high hydrophobic performance, thereby keeping high fuel oil flux while having high emulsified water separation efficiency for water-containing oil products.

Description

technical field [0001] The invention relates to a stacked spider web composite filter paper for separating emulsified water in fuel oil and a preparation method thereof, in particular to a method for separating emulsified water in fuel oil by adopting ultrasonic pre-atomization, electric field secondary atomization technology and bidirectional electric field drafting technology A stacked spider web fuel composite filter paper and a preparation method thereof belong to the technical field of functional micro-nano fiber materials. Background technique [0002] Fuel is easily mixed with water during production, transportation and storage. On the one hand, it will cause incomplete combustion of fuel and produce a large amount of exhaust gas, which will aggravate smog pollution. On the other hand, it will also cause engine rust and even breed microorganisms to block the fuel injector , seriously affecting the normal operation of the engine. The emulsified water in fuel oil has b...

Claims

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Application Information

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IPC IPC(8): D21H27/08D21H27/38D21H23/64B01D39/18C10G33/06B32B5/02B32B27/12B32B23/10B32B3/26B32B33/00
CPCB01D39/18B32B3/266B32B5/02B32B5/022B32B23/10B32B27/12B32B33/00B32B2255/02B32B2255/26B32B2262/04C10G33/06D21H23/64D21H27/08D21H27/38
Inventor 丁彬张继超葛建龙赵兴雷张世超刘丽芳俞建勇
Owner DONGHUA UNIV
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