THERMAL SCIENCE

International Scientific Journal

CRITERIA SELECTION FOR THE ASSESSMENT OF SERBIAN LIGNITES TENDENCY TO FORM DEPOSITS ON POWER BOILERS HEAT TRANSFER SURFACES

ABSTRACT
Based on investigations of ash deposit formation, semi-empirical indicators for slagging and fouling, based on ash chemical composition and its fusion temperature, have been determined. These criteria-indicators, in suggested limits, describe the coals on which they are based (North-American and British) well. However, the experience in the thermal power production sector of Serbia shows that their literal application to domestic coals does not produce satisfactory results. This contribution provides an analysis of applicability and the choice of criteria that are suitable for Serbian coals. The focus of the contribution is on coal slagging indicators, since slagging has much heavier consequences on heat transfer inside the steam boiler, and on boiler operation as a whole. The basis for the analysis of chosen criteria comprises of the results of investigations of four coal fields - Kostolac, Kolubara, Kosovo (Serbia), and Ugljevik (Bosnia and Herzegovina).
KEYWORDS
PAPER SUBMITTED: 2009-04-06
PAPER REVISED: 2009-10-13
PAPER ACCEPTED: 2009-10-17
DOI REFERENCE: https://doi.org/10.2298/TSCI0904061M
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2009, VOLUME 13, ISSUE 4, PAGES [61 - 78]
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© 2019 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence