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Oil-water separation device and preparation method thereof

A technology for oil-water separation and oil spillage, applied in the direction of separation methods, liquid separation, chemical instruments and methods, etc., can solve the problems of high equipment cost, incomplete separation, and only removal, etc., and achieve simple preparation method and good hydrophobic effect , the effect of short process time

Inactive Publication Date: 2011-09-14
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the cost of gravity separation is relatively low, but it can only remove free water in crude oil, but it can’t do anything for dissolved water and emulsified water
Centrifugal separation can achieve the purpose of separating free water and emulsified water. However, centrifugal equipment is expensive and difficult to maintain. It is currently only used in laboratory analysis
Electrode-separation, when using electric evaporation to treat crude oil emulsion with high water content, will produce electric breakdown and cannot establish the necessary electric field strength between electrodes. It cannot be used alone, and can only be used as a subsequent process of other treatment methods.
Adsorption separation and air flotation separation also have problems such as incomplete separation and high equipment cost.

Method used

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  • Oil-water separation device and preparation method thereof
  • Oil-water separation device and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Put the foamed nickel mesh substrate into ethanol and acetone alternately, ultrasonically clean it three times, and dry it in a blast drying oven.

[0036] 2. Prepare the required hydrofluoric acid / silver nitrate corrosion solution. Hydrofluoric acid and silver nitrate are prepared so that the concentrations are respectively 5.0 mol / L for hydrofluoric acid and 0.02 mol / L for silver nitrate.

[0037] 3. Set the temperature of the water bath to 70°C, tightly combine the metal foam net and the silicon wafer, and immerse it in the heated hydrofluoric acid / silver nitrate solution.

[0038] 4. The metal foam net is corroded in the above solution for 15 minutes, then taken out, rinsed with distilled water and dried.

[0039] 5. Soak the dried device in an ethanol solution of low surface energy substance dodecyl mercaptan for 24 hours, take it out, rinse and dry it with distilled water, and obtain a superhydrophobic / superlipophilic device with oil-water separation function....

Embodiment 2

[0042]1. Put the foamed nickel mesh substrate into ethanol and acetone alternately, ultrasonically clean it three times, and dry it in a blast drying oven.

[0043] 2. Prepare the required hydrofluoric acid / silver nitrate corrosion solution. Take hydrofluoric acid and silver nitrate to prepare the concentrations to be 4.0mol / L hydrofluoric acid and 0.02mol / L silver nitrate respectively.

[0044] 3. Set the temperature of the water bath to 70°C, tightly combine the metal foam net and the silicon wafer, and immerse it in the heated hydrofluoric acid / silver nitrate solution.

[0045] 4. The nickel foam is corroded in the above solution for 15 minutes, then taken out, rinsed with distilled water and dried.

[0046] 5. Soak the device after drying in the ethanol solution of low surface energy substance dodecyl mercaptan for 24 hours, take it out, rinse and dry it with distilled water. A superhydrophobic / superlipophilic device with oil-water separation function is obtained.

[00...

Embodiment 3

[0049] 1. Put the foamed nickel mesh substrate into ethanol and acetone alternately, ultrasonically clean it three times, and dry it in a blast drying oven.

[0050] 2. Prepare the required hydrofluoric acid / silver nitrate corrosion solution. Get 40% hydrofluoric acid and silver nitrate to prepare the concentration to be 4.6mol / L hydrofluoric acid and 0.05mol / L silver nitrate respectively.

[0051] 3. Set the temperature of the water bath to 70°C, tightly combine the metal foam net and the silicon wafer, and immerse it in the heated hydrofluoric acid / silver nitrate solution.

[0052] 4. The nickel foam is corroded in the above solution for 10 minutes, then taken out, rinsed with distilled water and dried.

[0053] 5. Soak the device after drying in the ethanol solution of low surface energy substances for 24 hours, take it out, rinse and dry it with distilled water. A superhydrophobic / superlipophilic device with oil-water separation function is obtained.

[0054] The same e...

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Abstract

The invention discloses an oil-water separation device and a preparation method thereof, and belongs to the technical field of chemical process devices. The preparation method comprises the following steps of: alternately putting a foam metal mesh substrate into ethanol and acetone, ultrasonically cleaning, and drying; preparing the required hydrofluoric acid / silver nitrate corrosive liquid; closely combining the foam metal mesh and a silicon chip, immersing in the heated hydrofluoric acid / silver nitrate corrosive liquid, corroding for 5 to 20 minutes, taking out, washing with distilled water, and drying; and soaking the dried device in ethanol solution of a low-surface-energy substance, taking out, washing with distilled water and drying. The device with multiple functions of adsorbing overflowed oil, an oil skimmer and separating oil and water consists of the metal mesh substrate and nano metal silver particles deposited on the surface of the metal mesh substrate, and has the surface modified by the low-surface-energy substance. The device has superhydrophobic / super-oleophilic effect, can be self-cleaned, can bear high temperature of at least 120DEG C, and can collect leaked oil at high temperature. The preparation method is simple, the flow time is short, and the efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of chemical process devices, and mainly relates to a multifunctional oil-water separation device and a preparation method. The device simultaneously has the functions of an oil boom, oil spill adsorption, an oil skimmer and oil-water separation. Background technique [0002] The rapid development of modern society has aggravated the resource and energy problems faced by human beings. At present, the reserves of oil and other traditional consumable energy sources continue to decline, and oil prices rise, all of which are affecting human daily life and social activities all the time. For this reason, people have gradually strengthened the exploitation and utilization of offshore oil resources, which has caused serious problems of frequent oil spill accidents during the mining process; Accidents caused by oil spills in China have aroused widespread concern. In addition, in the process of chemical production a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022
Inventor 石峰成梦娇高永锋
Owner BEIJING UNIV OF CHEM TECH
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