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High-efficiency industrial cyclone separator: A CFD study
Department of Machines and Apparatus for Chemical and Silicate Production, Belarusian State Technological University, Minsk, Belarus.
Institute of Particle Process Engineering, University of Kaiserslautern, Kaiserslautern, Germany.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0001-9789-6293
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0002-1033-0244
2020 (English)In: Powder Technology, ISSN 0032-5910, E-ISSN 1873-328X, Vol. 364, p. 943-953Article in journal (Refereed) Published
Abstract [en]

The flow within an industrial scroll-inlet high-efficiency cyclone separator has been studied using RSM and LES simulations. Of particular interest is the effect of the gas outlet configuration, i.e. outlet scroll and radial bend, on the flow pattern, pressure drop and cyclone efficiency. A surprising phenomenon is that the inner vortex splits into two vortices for the cyclone with a conventional outlet pipe while if the cyclone is equipped with an outlet scroll or radial bend there is no split. The outlet scroll and radial bend increase the pressure losses by 5.1% and 6.4%, respectively. These installations, moreover, significantly destabilize the pressure losses and the amplitude of instantaneous pressure drop oscillations increases from 0.65% to 16.2% and 33.96%, respectively. The investigated outlet scroll and radial bend have practically no effects on the cyclone efficiency since the flow in the main separation zone is not affected by the gas outlet configuration.

Place, publisher, year, edition, pages
Elsevier, 2020. Vol. 364, p. 943-953
Keywords [en]
Cyclone separator, Computational fluid dynamics, Vortex breakdown, Pressure drop, Collection efficiency
National Category
Fluid Mechanics and Acoustics
Research subject
Fluid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-76944DOI: 10.1016/j.powtec.2019.10.064ISI: 000528218100083Scopus ID: 2-s2.0-85075881002OAI: oai:DiVA.org:ltu-76944DiVA, id: diva2:1374017
Note

Validerad;2020;Nivå 2;2020-04-09 (alebob)

Available from: 2019-11-28 Created: 2019-11-28 Last updated: 2020-05-14Bibliographically approved

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Andersson, Anders GustavLundström, Tord Staffan

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