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Preparation method for structured packing for oil-water separation

A technology for structured packing and oil-water separation, which is applied in separation methods, liquid separation, grease/oily substances/floating matter removal devices, etc. It can solve problems such as increased packing resistance, poor oil-water separation effect, and uneven coverage

Active Publication Date: 2016-03-23
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the irregular shape of the random packing, the resistance of the packing increases, resulting in poor oil-water separation effect. At the same time, if there is sediment during the separation process, the packing will be blocked.
Grid packing and plate corrugated packing are the two most common types of structured packing. Although these two packings can make the fluid flow through the surface more uniformly, they are easy to produce due to the mutual rolling and intersecting of the diversion grooves and the inconsistent orientation. Wall flow and channel flow, the liquid tends to gather in the trough instead of covering the surface of the corrugated plate evenly
This leads to the inability to form effective liquid film and droplets during the oil-water separation process, thus affecting the oil-water separation effect
To sum up, the common problem faced by random packing and structured packing at present is how to improve their self-uniform distribution ability and improve the wall flow effect and other uneven distribution.
In actual use, it is necessary to rely on the liquid distributor to improve the above deficiencies, so as to ensure the separation effect of the packing, but the installation of the liquid distributor will inevitably lead to a significant increase in equipment costs and labor costs

Method used

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  • Preparation method for structured packing for oil-water separation
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Examples

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Effect test

Embodiment 1

[0016] like figure 1 As shown, the present invention includes: cage 1, particle I2, separator 3, particle II4, shaft 5, cover plate 6, fastener 7; cage 1 is fixedly connected to shaft 5; In the upper area of ​​the frame 1, the particles II4 are arranged in an orderly manner in the lower area of ​​the cage 1, and the area where the particles I2 are located and the area where the particles II4 are located are separated into two areas by the partition 3; the cover plate 6 is located on the area where the particles I2 form The surface; the center of the partition 3 and the cover 6 has a through hole, and the shaft 5 passes through the through hole; the fastener 7 is located at the center of the upper surface of the cover 6 and locks the cover 6.

[0017] oil-water mixture along figure 1 In the direction of the arrow, that is, the lower surface of the structured packing used for oil-water separation enters the area where the particle II4 is located. Under the action of the pores f...

Embodiment 2

[0019] oil-water mixture along figure 2 In the direction of the arrow, that is, the shaft 5 of the structured packing used for oil-water separation enters the area where the particles I2 are located. Under the action of the pores formed by the particles I2, the oil-water mixture is atomized and divided into extremely fine liquid filaments and liquid droplets, because the material of particle I2 is a surface-modified material with super-oleophilic and super-hydrophobic properties, which increases the collision probability between the oil phase and particle I2, so that the oil phase in the oil-water mixture can easily flow on the particles The surface of I2 spreads and adheres, and finally coalesces into oil droplets and detaches from the surface of particle I2. However, the water phase in the mixture continues to move toward the outer ring to the area where the particle II4 is due to being repelled, and the water phase or the oil-water mixture that is too late to separate thro...

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PUM

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Abstract

The invention relates to a preparation method for structured packing for oil-water separation. The preparation method is applicable to separators or packed towers and other devices for oil-water two-phase separation by use of structured packing in the fields of petrochemical engineering, water pollution treatment, hydraulic system pollution control and the like. The structured packing comprises a holding frame, particles I, a partition, particles II, a shaft, a covering plate and a fastener. The structured packing has the advantages that through modification on the surfaces of the particles I and the particles II, the particles I have super-oleophylic and super-hydrophobic properties, and the particles II have super-hydrophilic and super-oleophobic properties, so that oil-water two-phase separation can be realized by use of the oil-water two-phase density difference. The preparation method is simple to realize, convenient for processing, wide in application scope and high in oil-water separation efficiency.

Description

technical field [0001] The invention relates to a method for preparing structured packing for oil-water separation, which is suitable for equipment such as separators or packed towers that use structured packing to separate oil-water two phases in the fields of petrochemical industry, water pollution treatment, hydraulic system pollution control and the like. Background technique [0002] Oil-water separation is a technical means to achieve two-phase separation by gravity settling or chemical reaction according to the difference in density or chemical properties of water and oil. Oil purification, oilfield water treatment, sewage treatment, hydraulic oil purification and other processes all involve the separation of oil and water. Packing is the core component of contact mass transfer widely used in the petrochemical field, wastewater treatment field and other multi-phase separation processes. It is currently widely used in packed towers, rotating packed beds and separators ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/40
CPCC02F1/40
Inventor 聂松林纪辉杨凯强白晓蓉
Owner BEIJING UNIV OF TECH
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