Key features:
1、Electric field pre-dust removal can not only reduce the dust load of the filter bag, but also loosen the powder layer on the surface of the filter bag. This is because after the flue gas dust is charged by the corona charge of the front electric field, mutual repulsion is generated due to the copolar charge, so that the formed dust layer has high porosity, good air permeability, and is easy to peel off. In this way, the cleaning frequency can be reduced, the cleaning cycle of the filter bag can be extended, the energy consumption of ash cleaning can be saved, and the service life of the filter bag can be extended.
2、To ensure long-term efficient and stable operation, the dust removal efficiency of the electric bag composite dust collector is not affected by the resistance of coal type, flue gas characteristics and fly ash ratio.
3、Low running resistance, long cleaning cycle time of filter bags, and energy-saving effect. The dust load of the filter bag of the electric bag composite dust collector is small, coupled with the dust charge effect, so the dust layer formed by the bag has little resistance to the airflow, easy to clean ash, and the operating resistance is more than 500Pa lower than that of the conventional bag filter, and the cleaning cycle time is 4-10 times that of the conventional bag filter, which greatly reduces the operating energy consumption of the equipment. The filter bag has a long service life.
Because the ash cleaning cycle of the filter bag is greatly extended, the number of ash cleaning times is reduced, and the filter bag dust has strong air permeability, low resistance, and the strength load of the filter bag is small, thereby prolonging the service life of the filter bag.
4、Low operating and maintenance costs. The electric bag composite dust collector greatly reduces the operation and maintenance costs of the dust collector by appropriately reducing the number of filter bags, extending the service life of the filter bags, reducing the running resistance, and extending the ash cleaning cycle. The electric bag composite dust collector looks more complex because it has two different principles and different structures. However, according to the actual operation situation now, the daily operation management is still relatively simple.
5、The electric bag filter is especially suitable for the dust removal of high concentration of boiler smoke in power plants, and its performance advantages such as low resistance and extended service life of the filter bag are incomparable with conventional bag filters.
6、It is easy to realize the collaborative control of multiple pollutants such as fine particles. Because the working mechanism of the electric bag composite dust collector determines that it is easier to achieve the capture of fine particulate dust PM2.5 and heavy metal mercury than conventional electrostatic precipitator and bag filter.It can realize the co-treatment of fine particulate dust and heavy metal pollutants.
Structural form:
The pre-stage electrostatic precipitator adheres to the dust removal advantages of the first electric field of the electrostatic precipitator, and its dust removal efficiency changes exponentially with the effective area of the plate, which can collect most of the dust in the smoke, and the dust collection efficiency reaches 70-80%, and the fine dust flowing through the electrostatic precipitator area that is not collected is ionized and charged. On the one hand, the dust concentration in the dust removal area of the bag is greatly reduced, and on the other hand, the dust deposited in the filter bag after charging has low resistance characteristics, so as to meet the environmental protection requirements of emission concentration of less than 20mg/Nm³, and improve the efficiency of the overall performance of the dust collector.
Description
Electric bag composite dust collector is a new type of high-efficiency dust collector through the organic combination of electrostatic precipitator and bag filter, which gives full play to the respective dust removal advantages of electrostatic precipitator and bag dust collector, and the combination of the two to produce new performance advantages, making up for the dust removal shortcomings of electrostatic precipitator and bag filter. This composite type sit remover has the advantages of high efficiency, stability, low bag resistance, long life and small footprint.
