Pulse-jet filtration: An effective way to control industrial pollution Part I: Theory, selection and design of pulse-jet filter

Emission of Fine Particles and Ageing Behavior of PTFE Finished Filter Media during Industrial Pollution Control

“…It may be added that emission of particle mainly take place at the time of cleaning of media when high pressure purge air acted upon the fabric for its regeneration. During pulsing pore get enlarged for very short time, in such case direct penetration becomes prominent besides seepage of particles through filter media (Mukhopadhyay, 2009). Higher the number of small particles in the upstream, penetration of particles by direct penetration and seepage is expected to be higher leading to higher emission at downstream.…”

“…Efficiency and pressure drop are relatively unaffected by large changes in inlet dust loadings for continuously cleaned filters. Over past two decades, fabric filter embedded with pulse-jet filtration (Mukhopadhyay, 2009;Mukhopadhyay, 2010) has become the most preferred choice providing sound technical and commercially attractive solutions in controlling industrial pollution.…”

“…Report suggest that the use of composite nonwoven materials with membrane/coating, and nonwoven layered fabrics with finer denier fibres or even nano fibres at the upstream side of fabric are useful for controlling finer particles (Mukhopadhyay, 2009). Besides research orientation towards achieving very high efficiency for small particulates, there are extensive efforts for improving the performance of filter bag in terms of reduced energy requirement, longer bag life etc.…”

Composite nonwovens in filters: applications

“…Membrane fi lters may offer numerous advantages, including: hazardous contaminants is required, or where unique advantages (such as cake release) may be offered by interaction with a membrane surface. As an example, hybrid technology which combines electrostatic charges with fabric fi ltration offers improved effi ciency when utilizing membrane fabrics with lower air to cloth ratios, thanks to the substantial reduction in the burden of particulates on the fabric fi lter (Mukhopadhyay, 2009). In a study by Fritsky (2013) based on particulate emissions at a municipal solid waste combustion facility, the performance of GORE-TEX® membrane (PTFE)/ TEFLON® B fi berglass fabric fi lter bags was assessed.…”

Vantagens do precoating em Filtros de Mangas

“…Tal ECP é capaz de filtrar grandes volumes de ar de forma relativamente econômica. Além, da excelente [3] eficiência na retenção de partículas em extensa faixa granulométrica [4] , capturando até mesmo as mais finas (menores do que 2,5 micrômetros). A Fig.…”