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Key points to be controlled in the selection of dust removal cloth bag

Time : 2023-06-28 Hits : 3

In the bag filter, dust adheres to the outer surface of the filter bag. When the dust gas passes through the dust collector, the dust will be blocked on the surface of the filter bag, and the clean gas enters the filter bag through the filter material. The cage in the filter bag is used to support the filter bag, avoid the collapse of the filter bag, and help to eradicate and redistribute the filter cake. The fabric and planning of the dust removal bag shall be aimed at efficient filtration, easy dust removal and durability. The selection of dust removal cloth bag is very important, which directly affects the dust removal effect. The selection of dust bags is mainly based on the gas temperature, humidity, chemical property of tide, particle size, dust concentration, wind speed, dust removal method, etc. In the process of dust removal, it is generally believed that when the dust is blown to the center of the dust bag, the middle of the dust bag will expand to shrink, and then achieve the effect of removing the dust. In fact, the pulsed air quality is rushed to the dust collection bag, which makes the dust collection bag vibrate rapidly from top to bottom, and the dust collection bag of the dust layer is sensational and the pressure blows. Lcmd large-scale low-pressure long bag pulse dust remover is a dry-type high-efficiency dust remover. It is a dust removal device that uses bag filter elements made of fiber fabric to collect solid particles in dusty gas. The effect principle is that the dust particles will be intercepted when they bypass the filter cloth fiber due to the inertial force effect Fine dust particles are constantly changing the direction of movement by the impact of gas molecules. Since the space between fibers is smaller than the free path of Brownian motion of gas molecules, the dust particles will collide with the fibers and be separated. The working process is related to the weaving method of the filter material, the density of the fiber, the dispersion of the dust, inertia, shielding, gravity, electrostatic effect and other factors as well as the ash removal method. The filter cloth material is the key point of the bag filter. The filter cloth with excellent performance should have excellent corrosion resistance, heat resistance and high mechanical strength in addition to specific density and permeability. Secondly, how to select a compressed air compressor with unsatisfied oil and water capacity to ensure that there is sufficient gas storage capacity when the air bag volume is small. The blow pipe shall be adjusted to the center of the bag, and then firmly fixed. The control equipment shall be flexible and reliable. The adjustable pulse width shall be less than 1oms and the required injection interval. In one stage of the furnace, because the operation resistance was not exhausted, even at 2000Pa, frequent impact was caused, the planning of the air bag was very small, and the pressure could not rise rapidly, resulting in the failure of injection.

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