Rotary dryer baghouse design considerations

First, bag filter cleaning and rapping is not timely. When the bag filter cleaning is not timely phenomenon occurs, not only will increase the resistance of the filter bag, and because of fouling factors affecting dust collection effect. We typically consider two cleaning methods in the design, one rotary dryer fan when the air bag and stop the wind through the open bag and shake the dust from the bag surface and sink down ; the second is in the precipitator rapping leave enough artificial cleaning aisle to shutdown workers into the precipitator rapping clean or replace the bag. And some manufacturers of rotary dryer uses fiberglass bags as the bag, this bag fiberglass ventilation is very good, if the use of mechanical rapping or anti-hair form, there will be cleaning bag over the net phenomenon, so when start collecting tend to have short-term pollution, because the bag attached to the surface of the powder from the filtration, fines would be discharged into the atmosphere through the bag. Therefore, we try not to use the bag as a fiberglass filter bag. Second, we must pay attention to rotary dryer system leakage and dust of a closed system is intact. If rotary dryer air leakage and leakage dust closed system seriously, it will affect the quality of the wind rotary dryer, resulting in the combustion chamber difficult to operate, difficult material drying, and because of cold air into the exhaust fans lead the temperature drops, condensation phenomenon, affecting dust collection effect. Dust seal leakage can cause bad produce dust and gas to escape and pollute the environment. In dealing with the case of gas leakage of dust collection, you can set the seal material and facilities in a steady flow sent ash discharge device, so as to solve leakage problems. Third, air lock box design rotary dryer to be reasonable. Lock bellows design is often uses the principle of material sealed to the design, the level of material level is key to the design, we can use the level control instrument to control the level of material level. Fourth, rotary dryer baghouse insulation. Rotary dryer exhaust humidity, high temperature, dew point temperature with the air temperature and the exhaust gas temperature increased, if improper insulation can easily cause condensation paste bag, seriously affect the dust collection effect. We should give full consideration in the design of insulation measures, and any fan can use asbestos powder duct insulation, thick walls and take the bag filter chamber top measures.