Experimental study on dust loading resistance characteristics of air filter cotton
In order to study the resistance characteristics of composite air filter cotton,taking the three-layer composite air fil-ter cotton as the main research object,the influence of dust loading rate on its resistance change was systematically studied through experiments,and it was compared with the filter paper.The results show that under the same filtering wind velocity,the lower the dust loading mass concentration,the faster the rising speed of filter cotton resistance.The lower the grade of air filter cotton,the greater the influence of dust loading mass concentration on its resistance growth,and the faster the normalized resistance increases with the dust loading mass per unit area.The filtering wind velocity has the influence on the growth of normalized resistance of filter cotton,the higher the filtering wind velocity,the slower the growth of normalized resistance,but it has little effect on the filter cotton with higher efficiency.Under the same dust loading conditions,compared to filter paper,the normalized resistance of filter cotton increases more slowly.Based on the experiment,the resistance growth characteristic equation of three-layer composite air filter cotton was obtained.The research results can provide reference for its service life prediction.
resistanceair filter cottondust loading ratefiltering wind velocitydust loading mass concentration
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