About: Comparison of the mathematical model of pulverized coal burnout with results gained from experimental tests on drop tube

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	In connection with construction of new supercritical power plants which burn pulverized lignite coal it was started the research of kinetic parameters of coal reserves in Czech Republic. Experimental facility and methodology of pulverized coal termokinetic properties determination with use of mathematical modelling is described in the paper. Thermokinetic properties as a mean for better understanding the nature of combustion process can be determined by experiment using the Drop Tube Test Facility (DTTF) described further in the text. DTTF provides conditions occurring in pulverized coal fired boiler by emulated oxygen concentration, temperature and velocity of reaction gas. The DTTF presented in the paper was build recently at the Energy Research Center. Experimental data acquired from DTTF are planned to be used in mathematical modelling using the code Fluent. The paper describes in detail main differences between used Fluent models of particles combustible fraction and reaction rate. Program Fluent can define different mathematical models of volatile evolution (devolatilization model) and char combustion (surface combustion model) to simulate coal combustion. The single kinetic rate devolatilization model assumes that the rate of devolatilization is first-order and the kinetic/diffusion- limited rate model assumes that the surface reaction rate is determined either by kinetics or by a diffusion rate. Temperature field and distribution of species mass fraction is evaluated for comparing with experimental tests. Results from adjusted mathematical model should provide closer information about combustion process in real operation. In connection with construction of new supercritical power plants which burn pulverized lignite coal it was started the research of kinetic parameters of coal reserves in Czech Republic. Experimental facility and methodology of pulverized coal termokinetic properties determination with use of mathematical modelling is described in the paper. Thermokinetic properties as a mean for better understanding the nature of combustion process can be determined by experiment using the Drop Tube Test Facility (DTTF) described further in the text. DTTF provides conditions occurring in pulverized coal fired boiler by emulated oxygen concentration, temperature and velocity of reaction gas. The DTTF presented in the paper was build recently at the Energy Research Center. Experimental data acquired from DTTF are planned to be used in mathematical modelling using the code Fluent. The paper describes in detail main differences between used Fluent models of particles combustible fraction and reaction rate. Program Fluent can define different mathematical models of volatile evolution (devolatilization model) and char combustion (surface combustion model) to simulate coal combustion. The single kinetic rate devolatilization model assumes that the rate of devolatilization is first-order and the kinetic/diffusion- limited rate model assumes that the surface reaction rate is determined either by kinetics or by a diffusion rate. Temperature field and distribution of species mass fraction is evaluated for comparing with experimental tests. Results from adjusted mathematical model should provide closer information about combustion process in real operation. (en)
Title	Comparison of the mathematical model of pulverized coal burnout with results gained from experimental tests on drop tube Comparison of the mathematical model of pulverized coal burnout with results gained from experimental tests on drop tube (en)
skos:prefLabel	Comparison of the mathematical model of pulverized coal burnout with results gained from experimental tests on drop tube Comparison of the mathematical model of pulverized coal burnout with results gained from experimental tests on drop tube (en)
skos:notation	RIV/61989100:27230/11:86087595!RIV14-GA0-27230___
http://linked.open...avai/predkladatel	Fakulta strojní
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GA105/08/1414)
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Bojko, Marian
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoká škola báňská - Technická univerzita Ostrava / Fakulta strojní
http://linked.open...dnocenehoVysledku	191270
http://linked.open...ai/riv/idVysledku	RIV/61989100:27230/11:86087595
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Volatile evolution; Surface combustion; Supercritical power plant; Oxygen concentrations; Experimental facilities; Experimental datum; Energy research centers; Combustion pro-cess (en)
http://linked.open.../riv/klicoveSlovo	Combustion pro-cess Energy research centers Experimental datum Experimental facilities Oxygen concentrations Supercritical power plant Surface combustion Volatile evolution
http://linked.open...ontrolniKodProRIV	[2C4B1FECB5F9]
http://linked.open...v/mistoKonaniAkce	Istanbul
http://linked.open...i/riv/mistoVydani	Pittsburgh
http://linked.open...i/riv/nazevZdroje	27th Annual International Pittsburgh Coal Conference 2010, PCC 2010. Volume 2
http://linked.open...in/vavai/riv/obor	BK
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Mathematical modelling of coal spontaneous in coal stockpiles and dumps
http://linked.open...UplatneniVysledku	2011
http://linked.open...iv/tvurceVysledku	Bojko, Marian Paluska, Radim
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2010-10-11 (xsd:date)
number of pages	8 (xsd:int)
http://purl.org/ne...btex#hasPublisher	University of Pittsburgh
https://schema.org/isbn	978-1-61782-321-3
http://localhost/t...ganizacniJednotka	27230

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