The bag filter belongs to the dry type dust collector. If the operating temperature is below the dew point, it will condense into liquid water. The liquid water will mix with the dust and cover the surface of the filter screen to form a paste bag, which will block the filter screen of the bag filter. When the air temperature is below minus tens of degrees Celsius, the smoke on the edge of the shell is easily condensed into water droplets. At the same time, the operating temperature of the bag filter must be at least 25K higher than the acid frost point temperature, and the flue gas temperature must always be maintained above 150 ° C to effectively prevent frost formation. Therefore, the insulation layer of the bag filter is very necessary.
The insulation material of the bag filter must meet the insulation performance, ensuring that after insulation (when the ambient temperature is not higher than 25 degrees, the outer surface temperature of the insulation structure does not exceed 50 degrees; when the ambient temperature is higher than 25 degrees, the outer surface temperature of the insulation structure can be 25 degrees higher than the ambient temperature). The insulation structure should be kept intact during its designed service life, and there should be no burning, rotting, peeling or other phenomena during use. The insulation structure should have sufficient mechanical strength and not be damaged under additional loads such as self weight, vibration, wind and snow
