1, The presence of dust leakage phenomenon Due to the presence of dust leakage phenomenon, a lot of cold air outside will be sucked into dust, dust to make local air temperature fell sharply, analyze water in the air, resulting in condensation. Many causes dust leakage, there are dust case there is leakage phenomenon caused by leakage in the welding fabrication and installation process, there are discharging device Mifengbuyan cause leakage, there exist non-standard pipe during the installation of weld leakage caused by the phenomenon, there are dust and non-standard pipe flange Mifengbuyan cause air leakage and so on. 2, The flue gas moisture content is too high When the moisture content in the flue gas treatment is too high, the supersaturated water analysis, the resulting condensation. This phenomenon in the cement kiln dust dry normal especially prominent, as normal dry cement kiln flue gas conditioning tower commonly used cooling quenching, when the jet of water is too large, resulting in the flue gas will produce condensation water produced when oversaturation. 3, The flue gas temperature is too low When the flue gas scrubber process itself temperature is near or below the dew point temperature will cause condensation. 4, The pulse jet gas temperature is too low Precipitator pulse cleaning process using compressed air, and the compressed air itself relative humidity of 100% saturated air. Because of its greater than atmospheric pressure, in terms of dew point relative to ambient atmospheric pressure to the low dew point, there from the condensation trend. When the compressed air temperature and filter the internal flue gas temperature or less, generally does not produce condensation. But in the winter, especially in northern China in winter temperatures usually minus ten or tens of degrees, the pulse jet of compressed air and dust inside the flue gas temperature difference is too large, compressed air is injected into the bag at the moment temperature will drop sharply, usually in white sprayed mist condensation high-speed airflow, low temperature vents or less within a certain distance to form a low temperature zone. Because the air nozzle in the air is saturated, so the temperature of the gas discharged after the fall will lead the region to analyze the water and cause condensation. In this case condensation is focused on blowing the bag surface pores in the dust bag surface adhesion due to absorption of moisture condensation precipitation bond is generated, and then plug the bag, resulting dust does not work. 5, There is no filter housing measures or poor insulation effect Filter bag house generally use steel structure, and thermal conductivity of steel is large, large temperature difference, the bag house shell will produce condensation when the outside air temperature and filter the internal flue gas temperature is formed. If the filter housing insulation measures are not taken, or while taking a thermal insulation measures, but the results are poor, the bag house condensation inevitable.
