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A TG/DTA study on the effect of coal blending on ignition behaviour

AutorArenillas de la Puente, Ana ; Rubiera González, Fernando ; Arias Rozada, Borja ; Pis Martínez, José Juan ; Faúndez, J.M.; Gordon, A.L.; García, X.A.
Palabras claveTG
DTA
Ignition
Coal blends
Interactive effects
Fecha de publicaciónmay-2004
EditorSpringer
CitaciónJournal of Thermal Analysis and Calorimetry 76(2): 603-614 (2004)
ResumenUnderstanding the ignition behaviour of coal is of utmost importance for the design of boilers and control of the combustion process. In recent years there has been an increasing utilisation of coal blends for combustion, but information on the possible interactive effects during ignition of the individual components is scarce. In this work the ignition behaviour of a series of coal blends, made up from three coals of different rank, sub-bituminous, high volatile and low volatile bituminous, was studied. To this end a thermogravimetric analyser linked to a mass spectrometer for evolved gas analysis was used. Different ignition behaviour was observed for the coals studied; the sub-bituminous and low volatile bituminous coals ignited heterogeneously, while homogeneous ignition occurred for the high volatile bituminous coal. In the case of blends of the low and high volatile bituminous coals, different mechanisms of ignition were observed depending on the blends composition.
Versión del editorhttp://dx.doi.org/10.1023/B:JTAN.0000028039.72613.73
URIhttp://hdl.handle.net/10261/103371
DOI10.1023/B:JTAN.0000028039.72613.73
ISSN1388-6150
E-ISSN1572-8943
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