Experimental Study on Structure and Performance of Dedusting Filter Material Modified by Reducing Graphene Oxide Spraying

With the continuous improvement of social requirements for air quality, industrial dedusting standards are becoming more and more stringent. Bag dust collector is one of the most commonly used and fastest technological dedusting equipment in industrial dedusting places.The filter bag is the core part of the bag filter, and the post-treatment of the filter bag is a common method to improve the performance of the bag filter.In this paper, air spraying method was used to post-treat four kinds of commonly used bag filter bags: polyimide fiber, polyphenylene sulfide fiber, glass fiber needle felt and flumex high temperature needle felt. The structural parameters and performance parameters of four new composites after post-treatment were compared and analyzed.The results showed that a layer of reduced graphene oxide coating was formed on the surface of the modified filter bag. After comprehensive comparative analysis, the reduction effect of graphene oxide composite with polyphenylene sulfide fiber (PPS) is the best. Under the filtration velocity of 0.8m/s, the filtration efficiency of PM1.0, PM2.5 and PM10 increased by 7.3%, 7.6% and 8.2%, respectively. The fiber porosity decreased from 98.36% to 98.18%. The resistance is basically unchanged, and the influence of resistance does not need to be considered when it is used. This study provides a reference for the post-treatment method of the filter bag of the dust collector