Collection of fine adhesive and cohesive dusts with pluse‐jet fabric filers

Schmidt, Eberhard; Löffler, Friedrich

doi:10.1002/ceat.270130155

Cited by 4 publications

(1 citation statement)

References 2 publications

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“…Too coarse particles will cause the formation of unwanted deposits in the ducts and a non-uniform layer, whereas too fine particles could be associated with an inefficient cleaning of the filter media. As for the layer thickness, a minimum of 1 mm is recommended (Schmidt and Löffler, 1990). According to the used material, this protective layer could also be employed for humidity adsorption or as a flame retardant (Schmidt and Pilz, 1996).…”

Section: Introductionmentioning

confidence: 99%

Precoating for improving the cleaning of filter media clogged with metallic nanoparticles

Khirouni

Charvet

Drisket

et al. 2021

Process Safety and Environmental Protection

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Filtration of dust nanoparticles emitted from metallurgical processes is currently problematic, due to a rapid increase of the pressure drop and an inefficient filter cleaning, inducing high maintenance costs. This paper investigates the use of precoating technique to overcome the cleaning difficulties caused by the metallic nanoparticles. It consists of protecting the filter surface with a dust layer composed of micron-sized particles that is easily discharged upon cleaning. In this study, the pulse-jet cleaning of flat filters with and without precoating is evaluated. The aim is to determine the effect of operating conditions on the cleaning efficiency and provide guidelines on the application of precoating. Different precoating materials are tested, to determine whether the material choice is of influence. Experimental results highlighted the increase of the collection efficiency and dust holding capacity using precoating. The cleaning efficiency was significantly improved from 10% without precoating to 90% with precoating. Clogging/unclogging cycles showed that the use of precoating allowed stabilizing the filtration process.

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Section: Introductionmentioning

confidence: 99%

Precoating for improving the cleaning of filter media clogged with metallic nanoparticles

Khirouni

Charvet

Drisket

et al. 2021

Process Safety and Environmental Protection

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Evaluation of the Efficiency of Filtration Processes Using Precoat Materials

2016

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The highly efficient filtration of ultrafine dust emitted by biomass combustion processes with a baghouse filter has been successfully tested in the last years. To protect the filter material from the very small and sticky fine dust particles and to guarantee very high total collection efficiencies (> 99 %) in a long‐term stable process, the use of a precoat is necessary. Tests done in a laboratory and a real‐application plant show that the reuse of precoat materials can lead to significant savings. Considering the influences of different combustion processes, the associated precoat efficiencies could be calculated. With these characteristic ratios, it is possible to evaluate different process settings. Hence, the amount and the cost of the needed precoat could be reduced significantly.

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Entwicklungstendenzen bei der Partikelabtrennung aus Gasen mit filternden Abscheidern

Schmidt

1997

Chemie Ingenieur Technik

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Regenerierbare Oberflachenfilter werden zur Partikelabscheidung aus Gasen in den drei groRen Anwendungsfeldern Emissionsminderung, Produktgewinnung und ProzeSgasreinigung als hocheffiziente Trennapparate eingesetzt. Urn die hervorragenden Abscheideleistungen auch bei Prozessen zu nutzen, die bisher aufgrund ungiinstiger Betriebsbedingungen konkurrierenden Abscheidertypen vorbehalten waren, werden die filternden Abscheider standig weiterentwickelt. Im Rahmen des vorliegenden Beitrages werden solche in die Zukunft hineinreichenden Entwicklungstenden-Zen am Beispiel laufender Arbeiten Developments in Particle Separation from Gases with Filtering Separators und ausgefiihrter Anlagen aus den drei Bereichen ,,Modellierung/ -Cleanable surface filters are used as highly efficient separation devices for Rechnersimulation", ,,Filtermedien-entwicuunga~ und ,,Rohgaskonditionierung" aufgezeigt und diskutiert'removing particles from gases in three major areas of application, viz. reduction of emissions, product recovery, and process gas purification. In order to utilize their excellent separating properties in processes where unfavorable operating conditions mean that competing kinds of separators have hitherto been used, filtering separators are undergoing constant development. This paper presents and discusses future-oriented developments from current work and completed plant in the three areas of 'modelinglcomputer simulation', 'filter medium development', and 'crude gas conditioning'.

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Collection of fine adhesive and cohesive dusts with pluse‐jet fabric filers

Cited by 4 publications

References 2 publications

Precoating for improving the cleaning of filter media clogged with metallic nanoparticles

Precoating for improving the cleaning of filter media clogged with metallic nanoparticles

Evaluation of the Efficiency of Filtration Processes Using Precoat Materials

Entwicklungstendenzen bei der Partikelabtrennung aus Gasen mit filternden Abscheidern

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