80 bag dust collector dust collection equipment melting environmental protection purification system

80 bag dust collector dust collection equipment melting environmental protection purification system

The selection of a single machine bag filter is a key factor in determining the effectiveness of dust control. Improper selection may lead to insufficient dust removal efficiency, frequent equipment failures, and soaring operating costs ——A certain foundry once chose ordinary polyester filter bags due to neglecting the sulfur-containing characteristics of dust. Corrosion and perforation occurred in just three months, and the service life was only extended after replacing the special filter materials3 Year. Therefore, it is necessary to systematically carry out selection work based on the actual situation of the production line, to ensure that the single machine bag filter is accurately matched with production needs.

The step is to comprehensively analyze the characteristics of dust, which is the selection of a single machine bag filter “Dao Password Lock”The characteristics of dust mainly include particle size, concentration, temperature, humidity, corrosiveness, flammability, etc., each of which directly affects equipment configuration. In terms of dust particle size, the particle size is smaller than5μmFine dust should be selectedPTFECoated filter material, which0.3μmThe filtering accuracy can efficiently capture fine dust; For coarse dust with larger particle size, ordinary polyester filter material can be used to reduce costs. In terms of dust concentration, the inlet dust concentration exceeds100g/m³It is necessary to install a pre dust collector before the single machine bag filter to avoid excessive dust accumulation in the filter bag in a short period of time; When the concentration is low, standard models can be directly selected. Temperature is the core basis for selecting filter media: ambient temperature dust (＜120℃）Suitable for polyester filter media; Medium temperature dust（120-260℃）Suitable for aramid filter media; High temperature dust (>)260℃）It is necessary to use fiberglass composite filter material, and in some scenarios, basalt fiber filter material may even be required. In terms of humidity and viscosity, the moisture content exceeds60%Dust with strong viscosity can easily cause the filter bag to become stuck. Therefore, it is necessary to use laminated filter media and combine it with offline dust cleaning mode. At the same time, insulation devices should be installed at the equipment inlet to prevent condensation. Corrosive dust (such as sulfur-containing and chlorine containing dust) should be treated with corrosion-resistant filter media, such asPTFEFilter material and perform anti-corrosion treatment on the box body (such as lining glue, spraying). Flammable dust (such as coal powder and aluminum powder) requires the use of explosion-proof single machine bag dust collectors, equipped with explosion-proof motors, anti-static filter bags, and pressure relief devices to prevent dust explosions.

The second step is to accurately calculate the key parameters, which is the core to ensure the performance of the single machine bag filter meets the standard. The core parameters include processing air volume and filtering area, both of which directly determine the processing capacity of the equipment. The calculation of air volume processing needs to be based on the actual exhaust volume of the production line, combined with process fluctuations and reserved10%-15%Excess capacity to avoid dust spillage due to insufficient air flow. There are usually two calculation methods: one is to calculate based on the size of the suction hood and wind speed of the dust generating equipment（Q=3600×S×v，SFor the area of the suction hood,vFor inspiratory wind speed); Secondly, based on the estimation of process output, for example, the amount of dust generated at the top of a cement warehouse can be calculated based on the amount of material processed per hour1.2-1.5Calculate multiple times. The filtration area is calculated based on the processing air volume and filtration air speed, and the formula isA=Q/(60v)Among themAFor the filtering area (㎡),QTo handle air volume（m³/h），vTo filter wind speed（m/min）. The filtering wind speed needs to be strictly controlled according to the characteristics of the dust: the wind speed for non viscous dust at room temperature can be set to1.0-1.2m/minThe wind speed of viscous or fine dust should be reduced to0.6-0.8m/minExcessively high will accelerate the wear and blockage of filter bags, while excessively low will result in excessive equipment volume and increase investment costs. To handle air volume8000m³/hFilter wind speed1.0m/minFor example, the required filtering area is8000/(60×1.0)≈133㎡, based on which the corresponding specifications of single machine bag filter model can be selected (such asDMC-120Type, with a filtration area of approximately130㎡）。

80 bag dust collector dust collection equipment melting environmental protection purification system