Gas-solid separation fluidized bed spatial characteristic research device and characteristic research method

A technology of spatial characteristics and gas distribution device, which is applied in measurement devices, aerodynamic tests, instruments, etc., can solve the problems of quantitative analysis of gas-solid fluidization spatial characteristics, weak research and other problems, and achieves low maintenance costs and operation. Simple, convenient, impactful and credible effects

Active Publication Date: 2021-11-16
CHINA UNIV OF MINING & TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although there are many research methods and methods at present, the research on the spatial characteristics of gas-solid fluidization separation performance and the synergy mechanism between the local bed and the overall system is still relatively weak, and it is still not possible to comprehensively analyze the interaction of multiple influencing factors. The law of action on the spatial characteristics of gas-solid fluidization

Method used

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  • Gas-solid separation fluidized bed spatial characteristic research device and characteristic research method
  • Gas-solid separation fluidized bed spatial characteristic research device and characteristic research method
  • Gas-solid separation fluidized bed spatial characteristic research device and characteristic research method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The method includes the following steps:

[0057] Step 1. Put magnetite powder of 0.15-0.175mm into the fluidized bed, set the height of the static bed to 150mm-250mm, adopt a uniform opening air distribution plate with an overall opening rate of 10%, and turn on the Roots blower 41 , the compressed air enters the air distribution chamber 20 sequentially through the air bag 42, the rotameter 43, and the intake pipe 44, and the compressed air enters the fluidized bed body 10 through the gas distribution device 30 in the air distribution chamber. The pre-air distribution plate used in the test for A1.

[0058] Step 2. In order to characterize the spatial distribution characteristics of solid particles in different positions of the gas-solid separation fluidized bed as much as possible, design representative sampling points to study the distribution characteristics of the mass flow rate of solid particles through three-dimensional sampling of the bed. points such as Fig...

Embodiment 2

[0063] combine figure 1 , to further study the influence mechanism of different factors on the spatial characteristics of the gas-solid separation fluidized bed. In this embodiment, the research on the spatial characteristics of the gas-solid separation fluidized bed using the above-mentioned device includes the following steps:

[0064] Step 1. Put 0.15-0.175mm magnetite powder into the fluidized bed, set the height of the static bed to 200mm, adopt a uniform opening air distribution plate with an overall opening rate of 20%, turn on the Roots blower 41, and compress The air enters the air distribution chamber 20 sequentially through the air bag 42, the rotameter 43, and the air inlet pipe 44. The compressed air first passes through a pre-distribution air distribution chamber, and then enters the fluidized bed body 10 through the gas distribution device 30 in sequence. Three kinds of gas distribution devices are designed according to the experimental requirements. The hole ty...

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Abstract

The invention discloses a gas-solid separation fluidized bed spatial characteristic research device. The device comprises an air supply system and a fluidized bed system, wherein the air supply system is communicated with the fluidized bed system; the fluidized bed system comprises a bed body, an air distribution chamber and a gas distribution device, wherein the gas distribution device comprises an upper-layer air distribution device and three replaceable air pre-distribution plates; air distribution holes are uniformly formed in the upper-layer air distribution device; the three replaceable air pre-distribution plates comprise a first air pre-distribution plate, a second air pre-distribution plate and a third air pre-distribution plate. The invention further discloses a research method for quantifying the spatial characteristics of the gas-solid separation fluidized bed by using the gas-solid separation fluidized bed spatial characteristic research device. The device is scientific and reasonable in design, simple in process, low in operation and maintenance cost and fine and comprehensive in analysis, achieves the quantitative evaluation and analysis of the spatial characteristics of the gas-solid separation fluidized bed, and provides a new thought and reference for research of a gas-solid fluidization complex mechanism.

Description

technical field [0001] The invention relates to the technical field of analysis and measurement of a gas-solid separation system, in particular to a device and method for studying the spatial characteristics of a fluidized bed for gas-solid separation. Background technique [0002] In traditional chemical research, the gas-solid fluidized bed has a variety of space-time structures, and there is a strong coupling of motion characteristics between different scales, including strong coupling of bubbles, aggregation structures, gas-solid flow, and particle-to-particle motion characteristics. It is a typical complex system. Complex energy, mass, and momentum exchanges occur between the gas-solid two phases, between particle phases, and between the particle phase and the bed wall, and these exchanges significantly affect the stability and separation performance of the fluidized environment. The main factors causing bed instability in gas-solid separation fluidized bed are: primar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/06
CPCG01M9/06
Inventor 付艳红王松陈增强赵跃民董良
Owner CHINA UNIV OF MINING & TECH
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