Experimental investigation of particle deposition in filter media during filtration cycles with regeneration by pulse jet cleaning

摘要

The objective of this study was to experimentally evaluate the influence of particle deposition on gas filtration with pulse jet cleaning. Filtration experiments were performed using dolomitic limestone particles, with polyester and polypropylene filter media. A total of 100 filtration tests were performed with a surface velocity of 4 cm/s. The stipulated maximum pressure drop was 1000 Pa, the pulse time was 200 ms, and the pulse pressure was 200 kPa. After 100 filtration cycles, the polyester filter presented higher cleaning efficiency, higher collection efficiency, lower particle retention, higher permeability, lower residual pressure drop, and lower mass retained after reverse air pulse cleaning, compared to the polypropylene filter. The results confirmed that the polyester filter presented excellent operational performance when pulse jet cleaning was used. Furthermore, surface filtration was more pronounced for the polyester filter, due to lower deposition of particles inside the filter. (C) 2019 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.