Numerical investigation Greek lignite/cardoon co-firing in a tangentially fired furnace

Karampinis, E; Nikolopoulos, N; Nikolopoulos, A; Grammelis, P; Kakaras, E

dc.contributor.author	Karampinis, E	en
dc.contributor.author	Nikolopoulos, N	en
dc.contributor.author	Nikolopoulos, A	en
dc.contributor.author	Grammelis, P	en
dc.contributor.author	Kakaras, E	en
dc.date.accessioned	2014-03-01T02:11:32Z
dc.date.available	2014-03-01T02:11:32Z
dc.date.issued	2012	en
dc.identifier.issn	03062619	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29938
dc.subject	Cardoon	en
dc.subject	CFD	en
dc.subject	Co-firing	en
dc.subject	Drag law	en
dc.subject	Lignite	en
dc.subject	Tangentially fired furnace	en
dc.subject.other	Biomass Particle	en
dc.subject.other	Boiler operations	en
dc.subject.other	Cardoon	en
dc.subject.other	Co-firing	en
dc.subject.other	Combustion behavior	en
dc.subject.other	Combustion mechanism	en
dc.subject.other	Devolatilization	en
dc.subject.other	Drag law	en
dc.subject.other	Low qualities	en
dc.subject.other	Non-Spherical	en
dc.subject.other	Northern Greece	en
dc.subject.other	Numerical investigations	en
dc.subject.other	Optimum position	en
dc.subject.other	Particle tracks	en
dc.subject.other	Plant data	en
dc.subject.other	Tangentially fired furnaces	en
dc.subject.other	Tangentially-fired boilers	en
dc.subject.other	Three-dimensional numerical models	en
dc.subject.other	Utility boiler	en
dc.subject.other	Combustion	en
dc.subject.other	Computational fluid dynamics	en
dc.subject.other	Heat treating furnaces	en
dc.subject.other	Lignite	en
dc.subject.other	Pulverized fuel	en
dc.subject.other	Three dimensional	en
dc.subject.other	Biomass	en
dc.subject.other	biomass	en
dc.subject.other	combustion	en
dc.subject.other	computational fluid dynamics	en
dc.subject.other	lignite	en
dc.subject.other	mathematical analysis	en
dc.subject.other	numerical model	en
dc.subject.other	particle size	en
dc.subject.other	temperature effect	en
dc.subject.other	volatilization	en
dc.subject.other	Greece	en
dc.subject.other	Cynara cardunculus	en
dc.title	Numerical investigation Greek lignite/cardoon co-firing in a tangentially fired furnace	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.apenergy.2011.12.032	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.apenergy.2011.12.032	en
heal.publicationDate	2012	en
heal.abstract	The present study presents a three-dimensional numerical model for co-firing lignite and biomass in large-scale utility boilers. The model takes into account the non-spherical form of the biomass particle, which influences the drag coefficient and its devolatilization and combustion mechanisms. Simulations under different co-firing rations and biomass particle sizes are performed for a 300. MWe pulverized-fuel, tangentially fired boiler located in Northern Greece, operating with low quality lignite. Validation of the simulations is performed using plant data for the reference case of lignite combustion. The results obtained, which include temperature and species fields, particle tracks and burnout per burner level and NO.x calculations, provide useful conclusions regarding the maximum allowable biomass particle size and substitution ratio for an efficient boiler operation. In particular, the combustion behavior of particles from different burner levels suggests the optimum positions for dedicated biomass burners. © 2011 Elsevier Ltd.	en
heal.journalName	Applied Energy	en
dc.identifier.doi	10.1016/j.apenergy.2011.12.032	en
dc.identifier.volume	97	en
dc.identifier.spage	514	en
dc.identifier.epage	524	en