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Pulse bag filter

Pulse bag filter

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Filtering area: 18-90 (m2)

Number of filter bags: 24-120 (strips)

[Scope of application]: Suitable for boiler, power plant, desulfurization, cement, chemical and other industries.

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Overview of pulse bag filter

Pulse bag filter is a dry dust filter device. It is suitable for trapping fine, dry, non-fibrous dust. The original ash unloading system was improved, and the new single-machine dust removal unit with simplified equipment structure was improved. The improved equipment has the characteristics of large processing capacity, good purification effect, and convenient operation and maintenance. Compared with the mechanical vibrating roof dust collector, it also has low working noise. , The filter bag has a long service life and no mechanical moving wear parts. It is suitable for the top of various powder storages and used to capture all kinds of fine dry non-fibrous dust. The filter bag is made of woven filter cloth or non-woven felt, and the dust-containing gas is filtered by the filtering effect of the fiber fabric. When the dust-containing gas enters the bag type dust collector, the particles with large and specific gravity are caused by gravity. The action settles down and falls into the ash hopper. When the gas containing finer dust passes through the filter material, the dust is trapped and the gas is purified.

Working principle of pulse bag filter

Dust-containing air enters the middle of the dust collector box from under the dust collector. The coarse particles of dust settle down by their own gravity and fall into the ash bin. Fine dust is adsorbed on the outer wall of the filter bag through various effects and filtered The purified air enters the upper box through the venturi tube and is discharged from the air outlet. The dust adsorbed on the outer wall of the filter bag increases with time, and becomes thicker and thicker, the resistance of the dust collector gradually increases, and the amount of processed gas continues to decrease. The filter type dust removal device includes a bag type dust collector and a particle layer dust collector. The former usually uses a filter bag made of organic fiber or inorganic fiber fabric as the filter layer, while the latter filter layer mostly uses particles of different particle sizes, such as quartz sand, River sand, ceramsite, slag and other components. With the powder repeatedly attached to the outer surface of the filter bag, the powder layer continues to thicken, and the resistance value of the bag filter also increases; the pulse valve diaphragm issues a command, the pulse valve opens when submerged from left to right, and the pressure in the high-pressure air bag is compressed. The air is vented. If there is no dust or it is small enough, mechanical dust removal will stop working. In order to keep the dust collector in an effective working state and keep the pressure loss within a certain range, it is necessary to remove the ash accumulated on the outside of the bag wall.


Technical Parameters

The gas purification method of the low-pressure pulse bag filter is external filtering. Dust-containing gas enters the filtering room of each unit through the diversion tube. Because the vertical distance between the bottom of the filter bag and the upper inlet of the air inlet is sufficient and reasonable, the air flow can be appropriately guided. And natural flow direction distribution, to achieve uniform distribution of air throughout the filter room, the particulate dust in the dust-containing gas is separated by natural sedimentation and directly falls into the ash hopper. The remaining dust is guided by the diversion system and enters the middle box filtering area with the airflow. Adsorbed on the outer surface of the filter bag. The filtered clean gas passes through the filter bag and is discharged through the upper box and the exhaust pipe.
Bag dust collector advantages
高 Dust removal efficiency is high, generally above 99%, and the dust concentration of the gas at the outlet of the dust collector is within tens of mg / m3, which has a higher classification efficiency for fine dust with a submicron particle size.
⑵The range of processing air volume is wide, the small one is only 1min to several m3, and the large one can reach tens of thousands of m3, which can be used for dust removal of flue gas from industrial furnaces and reduce the emission of atmospheric pollutants.
(3) Simple structure and convenient maintenance operation.
⑷On the premise of ensuring the same high dust removal efficiency, the cost is lower than that of the electric dust collector.
⑸ When using high-temperature-resistant filter materials such as glass fiber, polytetrafluoroethylene, and P84, it can operate under high temperature conditions above 200 ° C.
⑹Insensitive to the characteristics of dust, not affected by dust and resistance.
Tips: The specific scheme and equipment application need to be professionally customized according to the actual situation of the user! 24-hour technical consultation hotline 0371-64560789!

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