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Explain the auxiliary function of the fume sucker selection k

  • auxiliary function of the fume sucker is mainly composed of gravity settling chamber, high temperature flue gas cutting valve, water-cooled multi-pipe cyclone dust collector, water-cooled multi-pipe cooler, thermocouple, separate chamber reverse blowing bag dust collector, air regulating valve, induced draft fan, dust pumping pipe and chimney and desulfurization system. After the dust removal equipment, dust emission ≤50mg/Nm3, SO2 meets the emission standard. The structure and pulse valve are reformed to solve the problems of open placement and low pressure of compressed air source. Pulse dust collector adopts the technology of split chamber air stop and pulse jet dust removal, which overcomes the disadvantages of conventional pulse dust collector and split chamber reverse dust collector. It has good dust removal rate, low emission concentration, small air leakage rate, less energy consumption, less steel consumption, less land area, stable operation and good economic benefits. Suitable for metallurgy, building materials, cement, machinery, chemical, electric power, light industry dust gas purification and material recovery.

    Next, explain the auxiliary function of the fume sucker selection knowledge:

    First, mainly according to the user needs to dust the size of the amount, and site conditions to decide, this dust collector equipment is simple in structure, convenient in operation and maintenance.

    Two, with the accumulation of dust on the surface of the filter material, the speed and resistance of the dust collector are increased correspondingly. When the pressure difference between the two sides of the filter material is very large, some of the fine dust particles have been attached to the filter material are squeezed in the past, so that the speed of the dust collector is reduced.

    Three, filter material used for a period of time, due to screening, collision, retention, diffusion, electrostatic and other effects, the surface of the bag accumulated a layer of dust, this layer of dust is called the first layer, in the process of movement after this, the first layer became the main filter layer of the filter material, relying on the role of the first layer, large mesh filter material can also obtain a better filtration rate.

    Four, the dust collector resistance is too high will make the dust removal system air volume decreased significantly. Therefore, after the resistance of the dust collector reaches the value, the dust should be cleaned in time. Do not destroy the initial layer when cleaning, so as not to decrease the rate.

    auxiliary function of the fume sucker. Auxiliary function of the fume sucker has the following elements:

    First, pulse dust remover technology. Ash removal using medium gas, the pressure is adjustable. The medium gas used for dust removal should be water-free, oil-free, and nitrogen is recommended. After the dust collector stops running, it should continue to blow the dust back for two cycles to avoid the formation of caking and paste the bag with the moisture in the air and the dust on the surface of the bag.

    2. The flue gas temperature directly affects the smoke discharge effect of cupola dust collector. When the flue gas temperature of the spark collector is higher than 130℃, the emergency air mixing valve in front of the cupola dust collector will often be opened, the air pumping rate at the end of the air pipe will sharply decrease, and the exhaust effect will decline. When the flue gas temperature into the dust collector is more than 130℃, the dust bag shrinkage deformation, so that the operation resistance increases, if the flue gas temperature exceeds the softening temperature point of the dust bag filter material, resulting in the dust bag burned or failure.

    Third, under the premise of smelting process, increase the fixed point inspection and regular repair of equipment. Increase the regular training of equipment personnel, regular spot inspection and regular maintenance management of equipment, arrange weekly maintenance, and timely replacement of damaged parts, cupola dust removal system normal operation, discharge standards.

    Four, the quality of dust removal filter material directly affects the emission concentration of soot. Cupola smoke is characterized by light, fine, large dispersion and poor fluidity, which is easy to cause paste bag. Therefore, it is recommended to choose good water resistance, moisture is not combined with cloth bag, non-stick dust, dust, water settling ash bin, filter fiber fracture strength is greater than 24kg/cm transverse, longitudinal greater than 14kg/cm.

    auxiliary function of the fume sucker filter bags are arranged in a straight line. Each row of filter bags is equipped with a pulse valve to control the pulse cleaning of compressed air. The action of the pulse valve is controlled by a program controller. When cleaning, the cleaning controller gives instructions to release 0.5-0.7MPa compressed air at the moment of operation of the pulse valve. The compressed air rushes into the filter bag through the small hole on the blowpipe facing the filter bag. When it rushes into the filter bag, it induces a secondary air flow several times the compressed air, so as to generate an instantaneous shock wave and propagate down the entire length of the filter. Using this mechanism, the dust that accumulates outside the filter bag falls from the filter bag, and the clumped dust falls into the hopper. The duration of the pulse can be adjusted to suit the various characteristics of different dusts.

    auxiliary function of the fume sucker