The nature of the dust has a great influence on the technology and design of the dust collector. For some special properties of the dust, effective measures must be taken according to the design experience.

(1) Adhesion and cohesion. Adhesive and cohesive dust enters the hepa air filter dust collector, and the particles will become larger after a little agglomeration. The dust accumulated on the surface of the filter element can continue to be agglomerated during the process of being shaken off. The efficiency of dust removal and filtration The amount of dust in the material is also related to the adhesion and cohesion of the dust. Therefore, when designing dust with very significant adhesion and cohesiveness, or dust with almost no adhesion and cohesion, it must be different according to the type of dust and the purpose.

(2) Particle size. The main influence of particle size distribution on hepa dust collector is resistance loss and wear. Fine dust has a relatively large impact on pressure loss, and coarse dust has a decisive effect on wear, but only particles with high dust concentration and high hardness at the inlet have a relatively large impact.

(3) Particle shape. It is generally believed that needle-like crystal particles and flake-like particles easily block the pores of the filter material and reduce the efficiency of dust removal. The fibrous particles that can agglomerate into flocs are difficult to fall off the surface of the filter material if the filter speed is high. Different filter wind speeds are selected according to the particle shape and characteristics in the design.

(4) The density of particles. The bulk density of dust is related to particle size, cohesion, and adhesion, as well as the resistance loss and filter area of the filter element of the dust collector. The smaller the bulk density, the more difficult it is to clean the dust, and a lower filter wind speed should be selected when designing. In addition, the bulk density of dust is critical to the capacity of the selected dust collector.

(5) Hygroscopic and deliquescent. Dust with strong hygroscopicity and deliquescence, during the operation of the dust collector, it is easy to absorb moisture and solidify on the surface of the filter material, or it will deliquescence and become a thick substance when it meets with water, which will cause difficulty in cleaning dust, increase equipment resistance, and even affect The h14 hepa filter dust collector is operating normally.

(6) Static electricity. Once the easily charged dust generates static electricity on the filter material, it is not easy to fall off. For the very easily charged dust, technical measures such as anti-static filter material must be adopted to avoid explosion caused by sparks caused by static electricity.

(7) Flammability. For combustible dust, although it does not necessarily cause explosions, if sparks appear in the process before the dust collector and can enter the dust collector, explosion-proof measures should be adopted, such as the addition of spark traps and explosion-proof doors.

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