Fluidized bed capable of organizing ultrafine particles to be mixed in orderly manner

A technology of ultra-fine particles and fluidized bed, which is applied in the direction of mixing method, gas/steam and solid mixing, chemical instruments and methods, etc. It can solve the problems of particle back-mixing and unfavorable particle mixing in the bed, and achieve the suppression of particle back-mixing , Improve the uniformity, improve the effect of gas-solid contact efficiency

Inactive Publication Date: 2018-09-28
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although adding auxiliary fluidization measures to the traditional gas-solid fluidized bed can achieve the purpose of improving the fluidization of ultrafine particles to a certain extent, from the perspective of particle mixing, uniform expansion fluidization is not conducive to particle m

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  • Fluidized bed capable of organizing ultrafine particles to be mixed in orderly manner
  • Fluidized bed capable of organizing ultrafine particles to be mixed in orderly manner

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Embodiment Construction

[0022] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0023] figure 1 It is a structural schematic diagram of a fluidized bed mixed with ordered ultrafine particles of the present invention, including an outer cylinder 1, a grid baffle plate 2, a guide tube 3, an air distribution plate 4, a central jet tube 5, etc., and a guide tube 3 Arranged in the middle of the outer cylinder 1, the grid baffle 2 is arranged in the annular area 2 between the draft pipe 3 and the outer cylinder 1, and the air distribution plate 4 is arranged on the draft pipe 3 and the grid baffle 2 Below, the central jet tube 5 is arranged in the middle of the air distribution plate 4 and corresponds to the draft tube 3 .

[0024] The basic idea of ​​the present invention is to use a new type of internal member of ultra-fine particle flui...

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Abstract

The invention discloses a fluidized bed capable of organizing ultrafine particles to be mixed in an orderly manner. The fluidized bed comprises a flow guiding pipe arranged in the middle of an outer cylinder, a grid-type baffle arranged in an annular area located between the flow guiding pipe and the outer cylinder, an air distribution plate arranged under the flow guiding pipe and the grid-type baffle, and a central jet pipe corresponding to the flow guiding pipe and arranged in the middle of the air distribution plate. The fluidized bed disclosed by the invention can organize the ultrafine fluidized bed particles to be mixed in the orderly manner, enhance circulating flow of the particles in the bed, improve gas-solid two-phase contact efficiency, and better improve fluidization of the ultrafine particles; and the fluidized bed has stable operation and is easy to maintain.

Description

technical field [0001] The invention belongs to the technical field of chemical equipment and relates to an ultrafine particle fluidized bed reaction device. Background technique [0002] Ultrafine particles (generally refers to particles with a size less than 10) are widely used in chemical industry, electronics, ceramics, biomedicine and other fields. Due to their high surface viscosity, ultrafine particles often exist in the form of aggregates during synthesis, transportation, and storage. Due to its good gas-solid mixing, high-efficiency heat and mass transfer, and the ability to effectively solve key problems such as the continuous and smooth removal of particles from the reactor, fluidized beds are used more and more in ultrafine particles. Such as coating functional films on the surface of ultrafine particles. However, due to the small particle size of ultrafine particles and the high viscosity between particles, channeling or other poor fluidization conditions ofte...

Claims

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Application Information

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IPC IPC(8): B01J19/24B01F3/06B01F23/30
CPCB01J19/0053B01J19/006B01J19/246B01F23/34B01F23/36B01F23/30
Inventor 邓传杰刘道银陈晓平梁财
Owner SOUTHEAST UNIV
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