Bag filter can be installed with cold air valve at high temperature. This cold air valve is mainly used to prevent some high temperature flue gas from entering the filter. It has the function of conditioning. One end is connected with a high-temperature pipeline, and the other end is connected with the atmosphere. Therefore, before using the bag filter, it is best to install these devices, so that the function of the filter can be well developed. It won't damage the dust collector, because the high temperature is unacceptable. Some low-temperature flue gas can be mixed properly. If the gas temperature in the dust collector is different, the best way is to mix some low-temperature gas into the high-temperature flue gas first, so that the gases can be mixed and the temperature in the dust collector will not be so high.
In the bag filter, the air box pulse bag filter adopts the design of spraying before flowing, that is, the air flow enters from the upper box of the filter and is discharged from the clean air header of the lower box. Its flow direction is consistent with the direction of pulse blowing and the direction of dust falling into the ash hopper after cleaning, and the purified air does not pass through the throat of the ejector, which greatly reduces the resistance of the dust collector, reduces the load of the fan, saves power consumption and is beneficial to dust settlement.