Bag dust collector and electric dust collector are a commonly used industrial dust removal equipment, their main function is to filter out the waste gas, dust and other impurities generated in industrial production, keep the environment clean and workplace health, and protect the health of workers and the normal progress of production. However, there are differences between the two devices in terms of working principle, structural characteristics, scope of application and maintenance, which will be introduced separately below.
First, the working principle
1. The working principle of the bag dust collector
The bag filter is a mechanical equipment that filters the waste gas using the filter material bag. Its main principle is to filter the waste gas through the bag, so that it is blocked on the surface of the bag when it is filtered through the bag, and the purified gas can be discharged. In addition, the bag dust collector can also clean the filter bag by vibration or cleaning aircraft to prevent the bag shell blockage and improve the dust removal efficiency.
2. Working principle of electrostatic precipitator
Electrostatic precipitator is a kind of equipment that uses high voltage electric field to dust the exhaust gas, its main principle is to use the electric field to guide the dust in the air stream to be charged, and by collecting the electric field of the electrode, the charged particles are adsorbed on the electrode, and finally excluded. The dust removal efficiency of the electrostatic precipitator is high, and it can deal with the exhaust gas under special circumstances such as high temperature, high humidity, high corrosion, high load and flammability.
Second, structural characteristics
1. Structural characteristics of bag dust collector
The bag filter is composed of air box, filter bag, ash cleaning system, import and export and electrical control system, etc. The filter bag can be made of cotton felt, polypropylene, ordinary filter paper, chemical fiber materials and other materials, which can be selected according to different workplaces and exhaust gas types, and the number and length of the filter bag can also be adjusted according to the size of the amount of waste gas treated.
2. Structural characteristics of electrostatic precipitator
The main components of the electrostatic precipitator include the shell, electrode, DC high voltage source, dust collector, transmission system and electronic control system, etc. The electrode can be divided into plate, tube, hanging and self-cleaning and other types, suitable for different exhaust gas treatment scenarios, while the electrostatic precipitator can also be based on different working requirements and use of the environment for secondary spraying, pneumatic dust removal and reverse blowing dust removal operations. To improve the efficiency of dust removal.
3. Scope of application
1. The scope of application of bag dust collector
Bag dust collector is widely used in steel, electric power, cement, chemical, coal and other industries of waste gas treatment and environmental protection work.
2. Scope of application of electrostatic precipitator
Electrostatic precipitator is widely used in sintering production, boiler, electric arc furnace, smelting and refining process, cement kiln, underground station and other environmental pollution control, to filter the waste gas generated in the industrial production process efficiently.
Fourth, maintenance
1. Maintenance of bag dust collector
Because practice has proved that the cleaning time should not be too long, otherwise it will accelerate the replacement frequency of the filter cartridge, and avoid causing gray spots and damaging the filter cartridge. In the process of using the bag filter, it is necessary to regularly replace or clean the filter bag to ensure the cleanliness and performance of the filter bag, and it is necessary to carry out daily maintenance and maintenance of the ash cleaning system, vibration engine or aircraft to avoid failures and accidents.
2. Maintenance of electrostatic precipitator
During the use of the electrostatic precipitator, it is necessary to regularly check and maintain various components, including electrodes, dust collectors, control systems, etc., to prevent equipment damage and failure caused by rain, snow, humidity, freezing and other factors. In addition, the electrical circuit, grounding device, power supply stability and other problems of the electrostatic precipitator also need to be regularly tested and maintained to ensure its safety and reliability.