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Microchannel Separator for Liquid-Liquid Two-Phase Separation

A microchannel separation and phase separation technology, applied in liquid separation, separation methods, chemical instruments and methods, etc., can solve the problems of accelerated droplet coalescence, high cost of microbial culture, limited application scope, etc., to simplify the separation process. , Improve the effect of capture separation and simple operation

Inactive Publication Date: 2015-08-05
SOUTHWEST UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually the separation efficiency is low and cannot be completely separated
(2) The electric demulsification technology is to place the W / O two-phase mixture in the high-voltage electric field (10-20kV) of AC, DC or high-frequency pulses to accelerate the coalescence speed of the droplets and finally achieve demulsification, but there are potential security issues
Disadvantages of this method: on the one hand, the cost of cultivating microorganisms is relatively high, and on the other hand, the growth of microorganisms will be affected by various factors, so its scope of application is limited

Method used

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  • Microchannel Separator for Liquid-Liquid Two-Phase Separation
  • Microchannel Separator for Liquid-Liquid Two-Phase Separation
  • Microchannel Separator for Liquid-Liquid Two-Phase Separation

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Using computer-aided design software to design and draw the internal structure graphics of the microchannel press plate 6, the hollow backing plate 5, the hydrophilic channel plate 4 and the hydrophobic channel plate 3. The microchannel pressure plate 6, the hollow backing plate 5 and the hydrophilic channel plate 4 are carved out by numerical control milling. The materials are stainless steel, 100 μm copper plate and stainless steel respectively. At the same time, they are cleaned with water and acetone to remove surface oil. In addition, the hydrophobic channel plate 3 is a PTFE film obtained by thermoplastic method. according to figure 2 Assembled into a 5×360° microchannel separator, use a peristaltic pump to inject the oil-water two-phase mixture with an oil content of 50% and an average particle size of 12 μm into the microchannel separator, and the two-phase mixture will complete demulsification within a few seconds process to achieve liquid-liquid separation. ...

Embodiment 2

[0035] Using computer-aided design software to design and draw the internal structure graphics of the microchannel press plate 6, the hollow backing plate 5, the hydrophilic channel plate 4 and the hydrophobic channel plate 3. A microchannel press plate 6, a 100 μm hollow backing plate 5, a hydrophilic channel plate 4, and a hydrophobic channel plate 3 are prepared by chemical etching, all of which are made of glass. In addition, the hydrophobic channel plate 3 undergoes an alkylation reaction through the glass surface, so that its hydrophobization. Clean the microchannel press plate 6, the hollow backing plate 5, the hydrophilic channel plate 4 and the hydrophobic channel plate 3 in ethanol and clear water to remove residual chemical corrosive agents on the surface. according to figure 1 Assembled into a 5×360° micro-channel separator, use an air compressor to inject a two-phase mixture with an oil content of 50% and an average particle size of 12 μm into the micro-channel s...

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Abstract

The invention discloses a liquid-liquid two-phase separator, and particularly relates to a micro-channel separator for liquid-liquid two-phase separation. The micro-channel separator for liquid-liquid two-phase separation simplifies the separation process and improves separation efficiency. The micro-channel separator comprises a main body and a micro channel, the main body is formed by overlapping at least one layer of hydrophilic channel plate and at least one layer of hydrophobic channel plate, and the micro channel is in a three-dimensional spiral shape and penetrates through the main body in a spiral mode in the overlapping direction of the main body. The three-dimensional spiral micro channel, the hydrophilic channel plate and the hydrophobic channel plate are adopted, mixed liquid spirally goes forwards along the micro channel and passes through the hydrophilic channel plate and the hydrophobic channel plate continuously, and based on the liquid drop inertia migration mechanism of Dean eddy coupling and the interface interaction of a hydrophilic and hydrophobic surface, collision and coalescence of liquid drops is promoted, final separation of two-phase mixed liquid is achieved, and the capturing and separating effect of the micro channel on small liquid drops under high throughput is improved.

Description

technical field [0001] The invention relates to a liquid-liquid two-phase separator, in particular to a microchannel separator used for liquid-liquid two-phase separation. Background technique [0002] Liquid-liquid two-phase separation occupies an important position in petroleum, chemical, textile, environmental protection, ceramics and other industries, and is an indispensable key unit operation for process assurance, fluid purification, product purification, raw material recovery, and equipment protection. Liquid-liquid two-phase separation is widely used in reaction separation, extraction, petroleum transportation, sewage treatment and many other processes. With the development of modern industry, the liquid-liquid two-phase separation process must face complex separation systems and increasingly stringent requirements for environmental protection, energy consumption and separation efficiency. [0003] Traditional liquid-liquid two-phase separation technology cannot mee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D17/022
Inventor 陈晓赵志刚曹耿潘美英
Owner SOUTHWEST UNIVERSITY FOR NATIONALITIES
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