Precoating for improving the cleaning of filter media clogged with metallic nanoparticles
| Autor: | Denis Bemer, Dominique Thomas, Augustin Charvet, Nassim Khirouni, Alain Ginestet, Clara Drisket |
|---|---|
| Přispěvatelé: | Laboratoire Réactions et Génie des Procédés (LRGP), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Institut National de Recherche et de Sécurité (INRS), CETIAT, Centre Technique des Industries Aérauliques et Thermiques |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Environmental Engineering
Materials science precoating General Chemical Engineering 0211 other engineering and technologies filter media 02 engineering and technology 010501 environmental sciences metallic nanoparticles 01 natural sciences law.invention Clogging [CHIM.GENI]Chemical Sciences/Chemical engineering law Environmental Chemistry [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering Safety Risk Reliability and Quality Metal nanoparticles Filtration 0105 earth and related environmental sciences 021110 strategic defence & security studies Filter media Metallurgy Filter (aquarium) cleaning efficiency |
| Zdroj: | Process Safety and Environmental Protection Process Safety and Environmental Protection, Elsevier, 2021, 147, pp.311-319. ⟨10.1016/j.psep.2020.09.045⟩ |
| ISSN: | 0957-5820 |
| Popis: | International audience; 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect