A Microstructure Mixer for High Viscous Fluid Mixing

A technology of microstructure mixer and fluid mixing, applied in the direction of fluid mixer, mixer, chemical instruments and methods, etc., can solve problems such as limiting mixing effect

Active Publication Date: 2020-07-07
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, more mature micro-mixers include interdigitated micro-mixers, Corning heart-shaped mixers, segmentation-polymerization micro-mixers, micro-mesh dispersion mixers, etc. Although these micro-mixers have been realized in many applications High-efficiency mixing of liquid-liquid and gas-liquid, but it is difficult to achieve good results for high-viscosity fluids (>50mPas). The main reason is that the fluids in these micro-mixers need to pass through micron-scale micropores or microchannels. The high flow resistance in these channels limits the mixing effect

Method used

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  • A Microstructure Mixer for High Viscous Fluid Mixing
  • A Microstructure Mixer for High Viscous Fluid Mixing
  • A Microstructure Mixer for High Viscous Fluid Mixing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Use the glycerin aqueous solution (viscosity=100mPas) that contains rhodamine B as mixing medium, contain 1 width 5mm in the micro mixer, the mixing channel of height 1mm, the mixing channel both sides contain 1 group of width 0.4mm, the microgroove of length 10mm, The glycerin solution flow rate that enters from feed inlet (6) is 20mL / min, the glycerol solution flow rate that enters from main feed inlet (7) is 10mL / min, and measurement obtains mixing factor=0.95, and the maximum flow resistance of mixer is 0.1MPa.

Embodiment 2

[0022] Use the glycerol aqueous solution (viscosity=100mPas) that contains rhodamine B as mixing medium, contain 10 width 1mm in the micro mixer, the mixing channel of height 1mm, the mixing channel both sides contain 1 group of width 0.2mm, the microgroove of length 4mm, The glycerin solution flow rate that enters from feed inlet (6) is 100mL / min, the glycerol solution flow rate that enters from main feed inlet (7) is 50mL / min, and measurement obtains mixing factor=0.93, and the maximum flow resistance of mixer is 0.3MPa.

Embodiment 3

[0024] Use the polyvinyl alcohol aqueous solution (viscosity=500mPas) that contains Rhodamine B as the mixing medium, contain 1 width 20mm, the mixing channel of height 4mm in the micro-mixer, there are 2 groups of microgrooves with width 1mm and length 30mm on both sides of the mixing channel , the flow rate of the polyvinyl alcohol solution entering from the feed port (6) is 50mL / min, the flow rate of the polyvinyl alcohol solution entering from the main feed port (7) is 5mL / min, the measurement results in a mixing factor=0.90, and the mixer has the highest Flow resistance 0.1MPa.

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Abstract

The invention belongs to the technical field of chemistry and chemical engineering, and discloses a microstructure mixer for mixing high-viscosity fluids. It includes a micro-dispersion structural part, a mixing channel, a main distribution chamber, a side distribution chamber, a mixed product collection chamber, a side feed port, a main feed port and an outlet, wherein: (1) the micro-dispersion structural part is arranged in the mixing channel The upper and lower sides are plate-type mechanical parts containing longitudinal micro-grooves, the micro-grooves in the upper micro-dispersion part and the micro-grooves in the lower micro-dispersion part are arranged in parallel and alternately, and do not overlap in the vertical direction; (2) the micro-grooves The upper and lower sides of the dispersion structure part are respectively connected to the fluid side distribution chamber, and the side distribution chamber is connected to the side feed port; (3) the main feed port, the main distribution chamber, the mixing channel, the mixed product collection chamber and the outlet are connected in series. The micro mixer is suitable for liquid-liquid mixing process with viscosity <500mPa·s.

Description

technical field [0001] The invention belongs to the technical field of chemistry and chemical engineering, and in particular relates to a microstructure mixer for mixing high-viscosity fluids. Background technique [0002] Mixing process is the basic operation process of chemical industry, which is common in chemical process. In continuous reaction and separation systems, passive mixing equipment has the characteristics of simple operation and low energy consumption, and is widely used. However, the internal mixing scale of traditional static mixing devices is generally at the millimeter level, so the mixing efficiency is often relatively low. In recent years, the advent of microstructured mixers (micromixers) has enabled efficient static mixing processes. The micro-structure mixer mainly adopts the basic principle of micro-scale mixing. It disperses or divides two fluids into micron-scale fluid micro-clusters through a micro-dispersion structure, and then completes the mi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F13/00B01F5/06
CPCB01F25/4233B01F25/40B01F33/301B01F33/30
Inventor 王凯骆广生
Owner TSINGHUA UNIV
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