At present, the widely used dust removal forms at home and abroad are centrifugal dust collector, washing dust collector, bag dust collector and electrostatic dust collector. Everyone is familiar with electrostatic precipitator. But most people don't necessarily understand the advantages and disadvantages of electrostatic precipitator, so let rabbits come along.
superiority
1. The purification efficiency is high. By lengthening the length of electric field, electrostatic precipitator can increase the effective flow area of electric field, improve the control quality of controller, and adjust the flue gas to achieve the required dust removal efficiency, thus improving the dust removal efficiency. For the conventional electrostatic precipitator, the dust removal efficiency is generally higher than 99% in normal operation. It can spread fine dust above 0.0 1 micron. In the design, different operating parameters can be used to meet the required purification efficiency.
2. Low resistance loss, low equipment resistance and low total energy consumption. The total energy consumption of electrostatic precipitator consists of equipment resistance, power supply device, heating device, vibration and auxiliary equipment (ash unloading motor, gasification fan, etc.). ). The resistance loss of electrostatic precipitator is generally 150 ~ 300 Pa, which is about 1/5 of that of bag filter, and its share in total energy consumption is low. Generally need 0. The flue gas volume of 2-0.8 degree electro-treatment1000 m/h h is generally below 20 mm water column. Compared with cyclone dust collector, even considering the power consumption of power supply unit and vibration mechanism, its total power consumption is still small.
3. The flue gas treatment capacity is large. Because the structure of electrostatic precipitator is easy to be modularized, the device can be enlarged. The maximum electric field cross-sectional area of a single electrostatic precipitator has reached 400 square meters.
4. The allowable working temperature is very high. For example, it is best to allow the working temperature of SHWB circuit dust collector to be 250℃, and other types can reach 350~400℃ or higher.
5. Automatic operation control can be completely realized.
disadvantaged
1. The equipment is complex, which requires a high level of equipment scheduling, installation and maintenance management.
2. There is a certain requirement for dust specific resistance, so there is a certain selectivity for dust, which can not make all dust obtain higher purification efficiency.
3. It is greatly influenced by air temperature, temperature and other operating conditions. If the same dust is operated at different temperatures and humidity, the results will be different. Some dust works well at a certain temperature and humidity, but it is almost impossible to use electrostatic precipitator at another temperature and humidity because of the change of dust resistance.
4. The one-time investment is large, and the horizontal electrostatic precipitator covers a large area.
5. In some enterprises, the actual effect can't meet the design requirements.
Ok, so much for the advantages and disadvantages of electrostatic precipitator. Generally speaking, the main advantages of electrostatic precipitator are high purification efficiency, low total energy consumption and large flue gas treatment capacity. The main disadvantage is that the equipment is difficult to install and maintain, and it can't filter all the dust, so it costs a lot of money. I hope you can have a clear understanding of point electrostatic precipitator through the introduction of rabbit.