The higher the moisture in the flue gas of the thermal power plant, the more obvious the increase in the ash accumulation of the suction fan blades. This situation occurs when the boiler heating surface leaks, or the water film type dust collector has insufficient water spray pressure, poor atomization, and flue gas with water. The flow rate of the flue gas in the suction fan has a significant effect on the formation of ash accumulation in the blade. As the flow rate of the flue gas increases, the impact force and separation effect of the gas flow increase, the flue gas changes direction in the impeller, and the dust particles are separated from the flue gas flow rate, hitting the blade and adhering thereto.
The working environment of the suction fan of the thermal power plant is poor. Changzhou vacuum pump has many factors affecting the ash accumulation of the blade, so it is impossible to reduce or avoid the accumulation of ash by only taking a single measure. Most of the power plant boilers are equipped with double suction fans to enhance the operation and management of the suction fans, keep the operating conditions stable, rationally adjust the operating state of the suction fans, and reduce the throttling losses.
Strengthen maintenance management and improve the quality of maintenance. Ensure that the clearance between the impeller and the fan casing is within the required range, especially to adjust the clearance at the inlet of the fan to reduce the disturbance of the smoke flow. Adjust the exhaust temperature of the boiler in time to avoid the exhaust gas temperature falling below the dew point. With the water film type dust collector system, it is necessary to strengthen the maintenance of the throat atomizing device, ensure the atomization effect, keep the pressure of the atomized water stable, and improve the dust removal efficiency. Prevent the leakage of the heated surface and reduce the smoke and water.
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