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Passive spiral micro-structural mixing unit and application thereof

一种混合装置、微结构的技术，应用在混合机、流态混合器、运输和包装等方向，能够解决不利混合、会贴壁流动等问题，达到优化混合效果、广阔应用前景的效果

Active Publication Date: 2013-03-20
INST OF PROCESS ENG CHINESE ACAD OF SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technology of the present invention solves the problem: Overcoming the problem of the prior art that the light and heavy phases are gradually stratified after the centrifugal force is introduced, and the heavy phase will flow against the wall, which is not conducive to mixing, and provides a passive spiral microstructure mixing device and its application. The device improves the adverse effect of the layering effect caused by the centrifugal force on the mixing process of the spiral channel, and enhances the fluid mixing effect through the built-in baffle and the adjustment of the inlet angle.

Method used

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Examples

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Effect test

Embodiment 1-6

[0026] In Examples 1-6, the Villermaux-Dushman rapid parallel competitive reaction was used as a model system to investigate the difference in the micro-mixing effect of micro-mixing devices with different sampling angles. The concentration of each substance in the model system is: Liquid A: KI 1.16×10 -3 mol / L, KIO 3 2.23×10 -3 mol / L,H 3 BO 3 1.818×10 -2 mol / L, liquid B: NaOH 9.09×10 -2 mol / L,H 2 SO 4 0.024mol / L; the flow rate of the two liquid phases is 0.27mL / min, using a UV spectrophotometer Concentration is measured, and then the separation factor is calculated, and the results are published in Table 1:

[0027] Table 1

[0028]

Embodiment 7

[0034] At room temperature, 2.5mol / L Na 2 SO 4 with BaCl 2The solution was injected into the spiral microstructure mixing device with vertical baffles through two inlet pipes at an equal flow rate of 5mL / min for mixing. The samples collected at the outlet of the device were washed with ethanol solution and placed in an oven at 100°C. dried for 24 hours to obtain d 43 100 nm barium sulfate particles.

Embodiment 8

[0036] At room temperature, 1mol / L Na 2 SO 4 with BaCl 2 The solution was injected into the spiral microstructure mixing device with vertical baffles from two inlet pipes at an equal flow rate of 1 mL / min for mixing. The samples collected at the outlet of the device were washed with ethanol solution and placed in an oven at 100 °C. dried for 24 hours to obtain d 43 500 nm barium sulfate particles.

[0037] It can be shown from the above examples and comparative examples that the spiral micro-mixing device proposed by the present invention has a higher micro-mixing effect compared with the prior art, and it has a better synthesis effect in the synthesis of barium sulfate nanoparticles.

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Abstract

The invention provides a passive spiral micro-structural mixing unit and application of the same in synthesis of a nanometer barium sulfate particle. The mixing unit is composed of a sample introduction pipe, a liquid storage chamber, a mixing channel, a buffer chamber and a sampling pipe, wherein the mixing channel, a core part for fluid mixing, is processed into a spiral structure with a hydrophobic material, and deflection baffles are uniformly arranged on the surface of an interior wall. The deflection baffles comprises front-tilting ones, vertical ones and back-tilting ones. The design of the deflection baffles is beneficial for generation of local secondary flow in the mixing unit, which strengthens fluid mixing. The mixing unit provided by the invention is applicable to a fast-reaction process which costs far less time in reaction than in mixing or a reaction-deposition process and has wide application prospects in considerable mixed reaction fields like medicine and chemical engineering.

Description

technical field [0001] The invention relates to a built-in baffle plate type spiral microstructure mixing device, especially a high-efficiency mixing and reaction device suitable for rapid mixing and reaction between fluids in biomedicine, energy and chemical processes—a passive spiral microstructure mixing device. Structural mixing devices and applications. Background technique [0002] Mixing generally refers to the unit operation of dispersing two or more different materials to achieve a certain degree of uniformity through mechanical or fluid flow methods. The mixing process is often accompanied by volume reduction or expansion, as well as the diffusion of substances between phases. The mixing process can be divided into macroscopic mixing, mesoscopic mixing and microscopic mixing according to different research scales. Among them, macroscopic mixing describes the circulation, dispersion and mixing process of materials in the whole reactor, mesoscopic mixing determines...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F13/00C01F11/46
CPCC01P2004/62C01P2004/64C01F11/462Y10S977/773B01F25/4316B01F25/431971B01F25/4331B01F33/30
Inventor 杨超王曦陈杰雍玉梅毛在砂程景才冯鑫张伟鹏
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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