Factors affecting dust removal effect
The dust removal effect of the dust collector is related to many factors, such as the temperature and flow rate of the flue gas, as well as the sealing state of the dust collector and the distance between the dust collecting plates.
2.1 The temperature of the flue gas
The temperature of the flue gas is too high, the initial voltage of the corona, the electric field temperature of the surface of the corona pole when the halo is on, and the spark discharge voltage are all reduced, which affects the dust removal efficiency. The temperature of the flue gas is too low, it is easy to cause the insulation parts to climb due to condensation; the metal parts are corroded, and the flue gas discharged from the coal-fired power generation contains SO2, which is more serious; the dust agglomeration in the ash bucket affects the platoon Ash, the factory has been ash for a long time due to ash, so that the dust collecting plate and corona wire are buried in the ash, and the dust collecting plate is burned, broken, and the corona wire is blown.
2.2 Flue gas flow rate
The flow rate of excessively high flue gas should not be too high, because it takes a certain time for the dust to deposit on the island dust collecting pole after being charged in the electric field. If the wind speed of the flue gas is too high, the nuclear power dust will not be settled and will be carried out by the air flow, and the flue gas If the flow rate is too high, the dust deposited on the dust collecting plate will be caused to fly twice, especially when the ash is rusted.
2.3 board spacing
When the working voltage and the spacing and radius of the corona line are the same, increasing the spacing of the plates will affect the distribution of the ionic current generated in the vicinity of the corona line and increase the potential difference on the surface area, which will result in a decrease in the electric field strength in the outer region of the corona. , affecting the efficiency of dust removal.