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A superfine powder trapping device for fluidized bed granulation system

A fluidized bed granulation and ultra-fine powder technology, applied in the direction of powder suspension granulation, special binder granulation, etc., can solve the problems of low granulation efficiency, large material loss, low granulation rate, etc. Improve granulation efficiency, improve material balance yield, and reduce leakage

Active Publication Date: 2018-02-09
ZHONGSHAN ZHONGZHI PHARMA GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the rise of modern ultrafine pulverization technology, the overall particle size of raw and auxiliary materials after ultrafine pulverization is mostly less than 45µm, of which the particle size is 0.1µm-10µm accounting for more than 20%, and 10µm-30µm accounts for 60%. As mentioned above, for this kind of raw material powder after micronization treatment, because its particle size is too small, if a conventional dust collection device is used for granulation, the powder is easily entrained by the air flow, and the solid powder carried by the exhaust gas will pass through. The pore size of the dust-proof bag is discharged, resulting in large material loss, low granulation efficiency, low granulation rate, material consumption, energy consumption, and labor consumption, which affect the performance and practical application of the final product of ultrafine powder. Therefore, it is necessary to improve the existing There is a dust collection device in the one-step granulation system, so that it can realize efficient granulation of micronized powder

Method used

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  • A superfine powder trapping device for fluidized bed granulation system
  • A superfine powder trapping device for fluidized bed granulation system
  • A superfine powder trapping device for fluidized bed granulation system

Examples

Experimental program
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Effect test

Embodiment 1

[0021] A dust collection device, which has a hole 2 on the top of the spray fluidization chamber, a titanium rod filter 1 is placed on the hole 2 and fixed to the top of the fluidization chamber, and a nozzle 3 is arranged in the center of the hole 2, The other end of the nozzle 3 is connected to a compressed air pulse blowback device 4 .

[0022] In this embodiment, the rod body 11 of the titanium rod filter 1 is hollow and contains an external thread end 12, the external thread end of the titanium rod filter 1 matches the internal thread 5 on the hole 2, The titanium rod filter 1 is thus connected to the hole 2 . In particular, the nozzle 3 goes deep into the rod body of the titanium rod filter 1 .

[0023] During the one-step granulation process, the titanium rod filter 1 is fixed on the top of the fluidization chamber, and the compressed air pulse blowback device 4 is turned on at the same time. The titanium rod filter 1 can effectively block the dust carried by the waste...

Embodiment 2

[0025] As a further improvement to Example 1, the powder collection device in this embodiment further includes a partition 6 vertically fixed on the top of the fluidized bed, and the partition 6 evenly divides the nozzles 3 at the top of the fluidized chamber.

[0026] In the one-step granulation process, the titanium rod filter 1 is fixed on the top of the fluidization chamber, and the compressed air pulse blowback device 4 is turned on at the same time. The titanium rod filter 1 can effectively block the dust carried by the waste air, and the partition 6 will be positioned at the fluidization chamber. The nozzles on the top of the chemical chamber are evenly separated, and the compressed air passes through the nozzles located inside the rod body of the titanium rod filter 1 to periodically blow back the titanium rod filters 1 on both sides, further reducing the dust adhesion on the titanium rod filter 1 and improving the powder body pelleting efficiency.

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Abstract

The invention relates to the technical field of one-step granulation, and specifically discloses an ultrafine powder trapping device used in a fluidized bed granulation system. The filter is placed on the hole and fixed to the top of the fluidization chamber. There is a nozzle in the center of the hole, and the other end of the nozzle is connected to a compressed air pulse blowback device. The titanium rod filter has a pore size of 0.1-10 µm, which can Realize the effective barrier of ultra-fine dust, reduce the material leakage, and improve the material balance yield; the nozzle penetrates into the rod body of the titanium rod filter, and the compressed air passes through the nozzle located inside the rod body of the titanium rod filter. The dust accumulated on the titanium rod filter is dusted off, thereby improving the granulation efficiency of the powder.

Description

technical field [0001] The invention relates to the technical field of one-step granulation, and more specifically relates to an ultrafine powder collection device used in a fluidized bed granulation system. Background technique [0002] Fluidized bed granulation, also known as boiling granulation, refers to the use of airflow to suspend the powder material in a boiling state, and then spray the binder to make the powder granulate, and finally obtain dry granules. Granulation and drying are completed at the same time, so it is also called one-step granulation. [0003] One-step granulation system is generally composed of dust collection system, spray fluidization chamber, raw material container, control system and other parts. The traditional dust collection system generally consists of a dust-proof bag and a bag vibrator. The dust-proof bag is used to collect the solid powder carried in the exhaust gas, and the bag vibrator dusts the solid powder back for granulation throu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J2/16B01J2/28
Inventor 成金乐刘海陈勇军黄志明罗石坚徐吉银唐琳
Owner ZHONGSHAN ZHONGZHI PHARMA GRP
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