Discrete element method modeling of the triboelectric charging of polyethelene particles: Can particle size distribution and segregation reduce the charging?

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F15%3A43900207" target="_blank" >RIV/60461373:22340/15:43900207 - isvavai.cz</a>

Výsledek na webu

<a href="http://iopscience.iop.org/article/10.1088/1742-6596/646/1/012045/meta" target="_blank" >http://iopscience.iop.org/article/10.1088/1742-6596/646/1/012045/meta</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/646/1/012045" target="_blank" >10.1088/1742-6596/646/1/012045</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Discrete element method modeling of the triboelectric charging of polyethelene particles: Can particle size distribution and segregation reduce the charging?

Popis výsledku v původním jazyce

Polyethylene particles of various sizes are present in industrial gas-dispersion reactors and downstream processing units. The contact of the particles with a device wall as well as the mutual particle collisions cause electrons on the particle surface to redistribute in the system. The undesirable triboelectric charging results in several operational problems and safety risks in industrial systems, for example in the fluidized-bed polymerization reactor. We studied the charging of polyethylene particles caused by the particle-particle interactions in gas. Our model employs the Discrete Element Method (DEM) describing the particle dynamics and incorporates the 'Trapped Electron Approach' as the physical basis for the considered charging mechanism. Themodel predicts the particle charge distribution for systems with various particle size distributions and various levels of segregation. Simulation results are in a qualitative agreement with experimental observations of similar particulat

Název v anglickém jazyce

Discrete element method modeling of the triboelectric charging of polyethelene particles: Can particle size distribution and segregation reduce the charging?

Popis výsledku anglicky

Polyethylene particles of various sizes are present in industrial gas-dispersion reactors and downstream processing units. The contact of the particles with a device wall as well as the mutual particle collisions cause electrons on the particle surface to redistribute in the system. The undesirable triboelectric charging results in several operational problems and safety risks in industrial systems, for example in the fluidized-bed polymerization reactor. We studied the charging of polyethylene particles caused by the particle-particle interactions in gas. Our model employs the Discrete Element Method (DEM) describing the particle dynamics and incorporates the 'Trapped Electron Approach' as the physical basis for the considered charging mechanism. Themodel predicts the particle charge distribution for systems with various particle size distributions and various levels of segregation. Simulation results are in a qualitative agreement with experimental observations of similar particulat

Druh

D - Stať ve sborníku

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Journal of Physics

ISBN

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ISSN

1742-6588

e-ISSN

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Počet stran výsledku

4

Strana od-do

1-4

Název nakladatele

IOP Publishing

Místo vydání

Bristol

Místo konání akce

Southampton

Datum konání akce

12. 4. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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