Experimental investigation on the combustion behaviour of pre-dried Greek lignite

Agraniotis, M; Grammelis, P; Papapavlou, C; Kakaras, E

dc.contributor.author	Agraniotis, M	en
dc.contributor.author	Grammelis, P	en
dc.contributor.author	Papapavlou, C	en
dc.contributor.author	Kakaras, E	en
dc.date.accessioned	2014-03-01T01:30:27Z
dc.date.available	2014-03-01T01:30:27Z
dc.date.issued	2009	en
dc.identifier.issn	0378-3820	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19593
dc.subject	Dry lignite	en
dc.subject	Temperature profiles	en
dc.subject	Emissions	en
dc.subject	Deposition	en
dc.subject.classification	Chemistry, Applied	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	FIRED POWER-PLANT	en
dc.subject.other	ASH	en
dc.title	Experimental investigation on the combustion behaviour of pre-dried Greek lignite	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.fuproc.2009.04.015	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.fuproc.2009.04.015	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	The present paper includes the results of the combustion tests with Greek dried lignite performed at a 1 MWth semi industrial scale pulverized coal combustion facility. Scope of the campaign is the investigation of the combustion behaviour of Greek lignite, i.e. temperature fields, ignition, burnout, emissions, as well as slagging and fouling tendency, while firing with varying levels of recirculated flue gas. Dry coal co-firing conditions in a large scale boiler are simulated by adjusting the volume flow of recirculated flue gas. Two test series representing different boiler operation modes are performed. During the first series the maximum flue gas temperature increase, when co-firing dry coal, is determined, while in the second test series the needed load decrease. in order to keep constant furnace outlet temperature in dry coal co-firing conditions is recorded. A detailed measurement set is carried out including temperature profiles, emissions, fuel, fly ash sampling and slagging and fouling investigations through the installation of dedicated deposition probes. The anticipated increase of the furnace temperature profiles by decreasing the inserted recirculated flue gas is confirmed by the experimental results. No clear trend of dry coal co-combustion on the emissions' behaviour is noticed, while dry coal firing appears to have a moderate effect on the deposition behaviour of Greek lignite. These preliminary investigations indicate that no significant operational problems are expected during a potential future demonstration of dry lignite co-firing in a Greek large scale boiler. (C) 2009 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	FUEL PROCESSING TECHNOLOGY	en
dc.identifier.doi	10.1016/j.fuproc.2009.04.015	en
dc.identifier.isi	ISI:000270076500003	en
dc.identifier.volume	90	en
dc.identifier.issue	9	en
dc.identifier.spage	1071	en
dc.identifier.epage	1079	en