Water-oil separation device

An oil separation and oil recovery technology, applied in separation methods, liquid separation, water conservancy projects, etc., can solve problems such as high failure frequency, complex equipment, and difficulty in recovering oil.

Active Publication Date: 2021-08-20
SEOUL NAT UNIV R&DB FOUND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the oil recovery device as described above has the problems of complicated equipment, high cost or high failure frequency, and difficulty in recovering oil accurately.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0092] Hereinafter, the present invention will be described in more detail through examples. These examples are only for illustrating the present invention, and should not be construed as obvious to those skilled in the art that the scope of the present invention is limited by these examples.

manufacture example

[0093] Production example: Production of rGO / LDPE film

[0094] Low-density polyethylene (LDPE 963, Hanwha Chemical) was added to toluene (Toluene) in an amount of 5% by weight, and then heated at a temperature of 90° C. for 2 hours to dissolve the low-density polyethylene in toluene.

[0095]Graphene oxide (N002-PDE, ANGSTRON MATERIALS) powder was heat-treated at a temperature of 220 °C for 5 hours to obtain reduced graphene oxide (rGO) powder. The reduced graphene oxide powder was added to toluene in an amount of 1 mg / ml, and then subjected to sonication to uniformly disperse it.

[0096] A low-density polyethylene (LDPE) solution and a reduced graphene oxide solution were mixed so that the weight of rGO relative to LDPE became 0, 0.5, 1, 5, and 10% by weight, respectively.

[0097] The mixed solution was slowly poured into methanol to obtain composite particles of particle agglomeration.

[0098] After taking out 1.000 ± 0.010 g of the obtained reduced graphene oxide / low-...

experiment example 1

[0105] Experimental example 1: Measuring the physical properties of rGO / LDPE film

[0106] The physical properties of the rGO / LDPE film produced in the production example were analyzed according to the following items.

[0107] 1-1. Shape of film

[0108] In the above-mentioned manufacturing examples, the profiles of the LDPE film with the rGO content of 0% by weight and the rGO / LDPE film with 1% by weight were compared, and the Figure 8 shown in .

[0109] It was confirmed that the thin film made of only LDPE was a white translucent circular thin film, but the rGO / LDPE composite thin film was a black round thin film.

[0110] 1-2. Floating properties of thin film

[0111] To confirm the flotation properties of rGO / LDPE films, the 1% by weight rGO / LDPE films were added into a beaker with water and oil, then, Figure 9 The position of the film over time (a)->b)->c)) is shown.

[0112] It was confirmed that the rGO / LDPE film did not float on the oil but slowly sank, and wa...

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Abstract

The present invention pertains to a water-oil separation device using the difference in density between water and oil, and more specifically, to a water-oil separation device which can easily and quickly separate oil by using a polymer film floating at the interface between the water and oil. A water-oil separation device according to the present invention easily and quickly collects oil of various viscosities with a simple structure by using differences in density between materials without using a conventional lyophilic / lyophobic film, thus solving the drawbacks of filter-based and adsorption-based methods developed in the past, and enabling quick and effective responses to actual oil spill situations.

Description

technical field [0001] The present invention relates to a water-oil separation device utilizing the difference in density between water and oil, and more particularly, to a device capable of easily and quickly separating oil by utilizing a polymer film floating on the interface between water and oil Water-oil separator. Background technique [0002] Large and small marine oil spills have occurred around the world. Spilled oil and harmful chemicals spread to shore when accidents occur, causing economic and physical damage to people and disrupting marine ecosystems. In order to restore such damage, much expense and manpower are required, and it takes a long time. In order to reduce this damage, rapid and effective disaster prevention is required. [0003] Therefore, when a large number of oil spill accidents occur at sea, the method of spraying emulsifier is usually used to prevent it from spreading to the surroundings. However, the use of an emulsifier has the following p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/032
CPCB01D17/0214C08J5/18Y02A20/204B01D17/0211C08J2323/06C08K3/046C08K3/042C08K3/041C08J3/215C08J3/212C08J2323/12C08J2323/14C08J2355/02C08J2323/18C08J2331/04E02B15/106E02B15/045C08L23/06E02B15/10E02B15/0857C08J2323/00
Inventor 金龙协崔允祯
Owner SEOUL NAT UNIV R&DB FOUND
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