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Ultramicro 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, material consumption, low granulation rate, etc. The effect of material balance yield, improving granulation efficiency and reducing leakage

Active Publication Date: 2016-04-20
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 45 μm, of which the particle size is 0.1 μm ~ 10 μm, accounting for more than 20%, and 10 μm ~ 30 μm accounting 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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  • Ultramicro powder trapping device for fluidized bed granulation system
  • Ultramicro powder trapping device for fluidized bed granulation system
  • Ultramicro 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 an ultramicro powder trapping device for a fluidized bed granulation system, which belongs to the technical field of granulation. The ultramicro powder trapping device is such structured that a hole is formed in the top of a spray fluidization chamber; a titanium rod filter is placed in the hole and fixed on the top of the fluidization chamber; the central part of the hole is provided with a nozzle; the other end of the nozzle is connected with a compressed-air pulse-jet cleaning unit; and the bore diameter of the titanium rod filter is 0.1 to 10 [mu]m. The ultramicro powder trapping device realizes effective obstruction of ultramicro powder, reduces run-off of a material and improves balanced yield of the material; the nozzle goes deep into a rod body of the titanium rod filter; and compressed air whisks dust adhered onto the titanium rod filter at fixed time through the nozzle in the rod body of the titanium rod filter, so granulation efficiency of powder is improved.

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 Applications(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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