Apparatus for mixing and reacting at least tow fluids

A fluid and equipment technology that is applied in the field of small-scale or micro-mixing operations and can solve problems such as large structures and high pressure loss

Inactive Publication Date: 2004-10-13
UOP LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this configuration is that the narrow channels must be long enough to achieve complete, intimate mixing
This requires a large structure and causes higher pressure losses

Method used

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  • Apparatus for mixing and reacting at least tow fluids
  • Apparatus for mixing and reacting at least tow fluids
  • Apparatus for mixing and reacting at least tow fluids

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0074] Components comprising stacked plates were fabricated from glass and static mixers using the swirl mixing principle as already described to see if helical flow was formed under different conditions. Water and air are injected into the mixing chamber in tangential and radial directions, respectively, relative to the mixing chamber. Use a high-speed camera with digital graphics processing to see if the helical flow of the flowing liquid is formed. This can easily be determined from observing the path of the air bubbles in the water flow. The experimental results are summarized in Table 1.

[0075]

[0076] From these results, it can be seen that the desired helical flow is obtained when the liquid / gas kinetic energy ratio is 0.66 or higher. A lower limit of 0.5 is estimated for the kinetic energy ratio of fluids flowing in the tangential / radial direction. It should be noted that the much higher throughput of fluid flowing in the tangential direction can preven...

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PUM

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Abstract

A novel apparatus for mixing and reacting at least two fluids is disclosed. Excellent mixing and superior pressure drop characteristics are achieved in a device comprising at least two supply channels to feed a mixing chamber and create a vortex. The alignment of the supply channels is such that fluids are introduced into the chamber at both tangential and radial directions. In the case of gas / liquid mixing, particularly advantageous is the injection of the liquid stream tangentially and the gas stream radially. Reaction of the fluids can take place within the mixing chamber or in a separate reactor in fluid communication with the mixing chamber outlet. The mixer / reactor apparatus is especially useful for reactions where rapid diffusion is critical.

Description

background of the invention [0001] The present invention relates to a novel device for mixing and reacting at least two fluids. The apparatus comprises a mixing chamber, at least two conduits for injecting fluid into the chamber in tangential and radial directions, and a mixing chamber outlet for discharging a mixed fluid stream. A reaction zone may be integrated in the mixing chamber or separate therefrom. [0002] When mixing at least two fluids, the aim to be achieved is to obtain as uniform a distribution as possible. Use w.Ehrfeld, V.Hessel, H.Lwe in Wiley-VCH published in 2000 " microreactor, the new technology of modern chemistry " (Microreactors, New Technology for Modern Chemistry) the static mixer of page 41-85 is advantageous. For liquids, known static mixers achieve mixing times between a few milliseconds and 1 second by producing alternating adjacent fluid layers with a thickness in the order of microns. The higher diffusion constant of the gas makes it mix e...

Claims

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Application Information

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IPC IPC(8): B01F15/02B01F5/00B01F5/04B01F5/06B01F13/00B01J19/00B01J19/24
CPCB01F13/0094B01J2219/2493B01J19/0093B01J2219/00889B01J19/249B01J2219/00835B01F2005/002B01J2219/00783B01F5/0604B01J2219/00873B01J2219/2453B01J2219/247B01F5/064B01F5/04B01F13/0066B01J2219/00891B01J2219/2488B01J2219/2474B01F13/0064B01J2219/2456B01F2025/9122B01F2025/914B01F25/30B01F25/422B01F25/432B01F33/3017B01F33/3012B01F33/304B01F33/00
Inventor K·M·旺当布舍S·阿布多V·赫塞尔H·洛伊S·哈尔特
Owner UOP LLC
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