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

A concentration distribution and multivariate technology, which is applied in the direction of analyzing materials and instruments, can solve the problems of being easily affected by gas-solid two-phase flow pulsation and uneven flow field, increasing the randomness of sampling results, and failing to meet measurement requirements, so as to avoid Error, simple structure, cheap cost effect

Active Publication Date: 2014-07-23
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 a multi-element particle system in a fluidized bed. The present invention will be further described below with reference to the drawings and specific embodiments.

[0023] The structure of the present invention is as figure 1 As shown, the multi-layer side wall discharge ports 8 are evenly arranged on the two side walls of the main fluidized bed 5; the inner wall of the main fluidized bed 5 at the side wall discharge ports 8 of each layer is respectively provided with guide rails 13 and Install the take-off partition plate 12 on the guide chute 13; the lower part of the main fluidized bed 5 is divided into the gas pre-distribution chamber 10 by the gas distribution plate 9, and the bottom of the main fluidized bed 5 is the bottom distribution plate 11; In the pre-distribution chamber 10, the bottom distribution plate 11 is provided with an annulus inlet pipe 2, and a jet inlet ...

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

Claims

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Application Information

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Patent Type & Authority Patents(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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