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Device for measuring concentration distribution of single-element or multi-element particle system

A concentration distribution, multivariate technology, applied in the direction of analyzing materials, instruments, etc., can solve the problems such as being susceptible to the pulsation of gas-solid two-phase flow and non-uniform flow field, the contingency of sampling results being enhanced, and the inability to meet the measurement needs. The effect of error, simple structure and low cost

Active Publication Date: 2012-11-07
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

However, due to the small amount of single sampling, and it is easily affected by the pulsation of gas-solid two-phase flow and the uneven flow field, the chance of sampling results is enhanced.
The realization of this design is based on the smooth flow of gas-solid two-phase flow, and it cannot meet the measurement requirements for particles that are not easy to fluidize like biomass

Method used

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  • Device for measuring concentration distribution of single-element or multi-element particle system
  • Device for measuring concentration distribution of single-element or multi-element particle system

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Embodiment Construction

[0022] The present invention provides a device for measuring the concentration distribution of a unit or multi-component particle system in a fluidized bed. The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] The structure of the present invention is as figure 1 As shown, the multi-layer side wall discharge port 8 is evenly arranged on the both side walls of the main body fluidized bed 5; the inner wall of the main body fluidized bed 5 at the side wall discharge port 8 of each layer is respectively provided with guide rail chute 13, and On the guide rail chute 13, the material taking partition plate 12 is respectively installed; the bottom of the main body fluidized bed 5 is divided into a gas pre-distribution chamber 10 by the gas distribution plate 9, and the bottom of the main body fluidized bed 5 is a bottom distribution plate 11; In the pre-distribution chamber 10, the annular gap inlet pip...

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Abstract

The invention belongs to fluidized bed related equipment and in particular relates to a device for measuring concentration distribution of a single-element or multi-element particle system in a fluidized bed. The device is characterized in that multiple layers of side wall discharging holes are uniformly distributed on side walls on two sides of a main fluidized bed; guide rail chutes are respectively formed on an inner wall of the main fluidized bed at each side wall discharging hole, and material-taking separation plates are respectively arranged on the guide rail chutes; a gas pre-distribution chamber is separated on the lower part of the main fluidized bed through a gas distribution plate; the bottom of the main fluidized bed is provided with a bottom distribution plate; annular space air inlet pipes are arranged in the gas pre-distribution chamber and on the bottom distribution plate; a jet air inlet nozzle is arranged on the gas distribution plate; and one end of a jet air inlet pipe is connected with the jet air inlet nozzle, and the other end of the jet air inlet pipe extends out of the bottom distribution plate. By adoption of gradual stratification sampling in a static state, particles on each layer can be totally taken, an error is avoided, and the actual distribution conditions of the particles can be really reflected; and moreover, the device is wide in application range and can be used for researching particle distribution under different operating conditions.

Description

technical field [0001] The invention belongs to related equipment of a fluidized bed, in particular to a device for measuring the concentration distribution of a unit or multi-component particle system in a fluidized bed. Background technique [0002] Due to its good mixing characteristics, high mass transfer, heat transfer efficiency and the ability to handle a large number of particles, the fluidized bed has been widely used in chemical industry, energy, environment and other fields. The axial distribution of solid particles in the fluidized bed has an important influence on the reaction rate, mass transfer and heat transfer between particles. Especially for systems containing biomass particles, the axial concentration distribution of biomass components plays a decisive role in both combustion efficiency and gasification degree. Therefore, it is particularly important to develop a new method that can measure the concentration distribution of solid particles in a fluidized...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/00
Inventor 张锴于邦廷张永生陈宏刚常剑杨勇平
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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