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Liquid distributor for inert particle fluidized bed

A technology of liquid distributor and inert particles, which is applied in the direction of chemical instruments and methods, separation methods, spray evaporation, etc., can solve the problems of uneven feeding, clogging of feeding inlet, etc., to prevent clogging of spray outlet and reduce agglomeration , Improve the effect of drying efficiency

Pending Publication Date: 2019-11-12
ZHEJIANG UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of uneven feeding of inert particle fluidized bed and blockage of feed inlet, the present invention proposes a liquid distributor for inert particle fluidized bed

Method used

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  • Liquid distributor for inert particle fluidized bed
  • Liquid distributor for inert particle fluidized bed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The glucose solution of configuration 0.3kg / l, feeding speed is 0.5m / s, under the same operation condition, try to adopt common feeding pipe and liquid distributor designed by the present invention to carry out feeding respectively, wind supply device provides cold wind, electric heating The device heats the hot air to 100°C, and the hot air is blown from the lower part of the inert particle fluidized bed 6 through the distribution plate 8 into the fluidized bed, blowing the inert particles 7 to a fluidized state, and the liquid material enters the distribution pipe 2 from the feed port 1, and the The spray port 3 is spray-coated on the inert particles 7, and the material is blown out after being collided into powder by the inert particles 7 after drying.

[0023] Through observation, it is found that during the feeding process of ordinary feeding pipes, the inert particles 7 will stick together for about 20 minutes, and the rest of the materials cannot be well coated on...

Embodiment 2

[0025] Glucose solutions of different concentrations are configured. Under the same operating conditions, attempts are made to adopt common feed pipes and liquid distributors designed by the present invention to feed, and glucose solutions of different concentrations are used for each experimental operation, and the wind supply device provides cold wind. The electric heater heats the hot air to 100°C, and the hot air is blown from the lower part of the inert particle fluidized bed 6 through the distribution plate 8 into the fluidized bed, blowing the inert particles 7 to a fluidized state, and the liquid material enters the distribution pipe 2 from the feed port 1 , is sprayed and coated on the inert particles 7 from the spray port 3, and the material is blown out after being collided into powder by the inert particles 7 after drying. Standard, observe and analyze the dead bed phenomenon under the condition of what feed concentration, to determine the maximum feed amount of the...

Embodiment 3

[0027] The inert particles 7 in the fluidized bed of Example 1 were respectively sampled and detected multiple times, and the sampling detection found that the material on the inert particles 7 in the common feeding tube feeding experiment had uneven distribution, and in the two samplings There are even cases where 12.3% and 10.9% of the inert particles are hardly covered with materials; and through the inert particles tested by the liquid distributor of the present invention, it is found that 3.7% of the inert particles are not wrapped in materials once. .

[0028] It is found through experiments that, comparatively speaking, the liquid distributor designed in the present invention distributes more evenly than the common feed pipe.

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Abstract

The invention discloses a liquid distributor for an inert particle fluidized bed. The liquid distributor comprises a material inlet pipe and a distribution pipe, wherein one end of the distribution pipe is connected to the material inlet pipe, the other end of the distribution pipe is closed, the distribution pipe has a conical spiral coil pipe type structure, and is uniformly provided with a plurality of spraying ports at intervals, and the diameters of the spraying port are gradually increased from the material inlet end. According to the present invention, the liquid distributor is arrangedon the lower half portion of the inert particle fluidized bed, and is positioned above the inert particles and the distribution plate, and the liquid material enters the distribution pipe through thematerial inlet pipe, and are distributed through the spraying ports, such that the dispersion degree of the liquid material can be effectively increased, the collision efficiency of the inert particles can be improved, the occurrence of caking, wall sticking and other phenomena can be effectively reduced so as to improve the drying efficiency of the inert particle fluidized bed.

Description

technical field [0001] The invention relates to a liquid distributor for an inert particle fluidized bed, which belongs to the technical field of design and manufacture of chemical mass transfer equipment. Background technique [0002] As a drying equipment with simple structure, small footprint and high heat transfer efficiency, inert particle fluidized bed has been widely used in food, medicine, chemical industry and other fields. In the prior art, the feed of inert particle fluidized bed is mostly direct feed, and the liquid material is mostly sprayed in the middle of the fluidized bed without uniform distribution, so that the material is more likely to stick into blocks or stick to the bed wall. Even the dead bed does not give full play to the role of inert particles. As a traditional liquid distributor, the tubular liquid distributor is relatively mature, and the channel provided is relatively large, with many spray points, and it is easy to install and disassemble. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D1/18B01D1/00
CPCB01D1/18B01D1/0064
Inventor 杨阿三李金程榕郑燕萍李琰君贾继宁屠美玲孙勤
Owner ZHEJIANG UNIV OF TECH
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