Techniques to determine ignition, flame stability and burnout of blended coals in p.f. power station boilers

Su, Shi, Pohl, John H., Holcombe, Don and Hart, J. A. (2001) Techniques to determine ignition, flame stability and burnout of blended coals in p.f. power station boilers. Progress In Energy And Combustion Science, 27 1: 75-98. doi:10.1016/S0360-1285(00)00006-X


Author Su, Shi
Pohl, John H.
Holcombe, Don
Hart, J. A.
Title Techniques to determine ignition, flame stability and burnout of blended coals in p.f. power station boilers
Journal name Progress In Energy And Combustion Science   Check publisher's open access policy
ISSN 0360-1285
Publication date 2001-01
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1016/S0360-1285(00)00006-X
Volume 27
Issue 1
Start page 75
End page 98
Total pages 24
Editor N. A. Chigier
Place of publication Oxford, New York
Publisher Pergamon Press
Collection year 2001
Language eng
Subject C1
290600 Chemical Engineering
660101 Coal-electricity
Abstract The blending of coals has become popular to improve the performance of coals, to meet specifications of power plants and, to reduce the cost of coals, This article reviews the results and provides new information on ignition, flame stability, and carbon burnout studies of blended coals. The reviewed studies were conducted in laboratory-, pilot-, and full-scale facilities. The new information was taken in pilot-scale studies. The results generally show that blending a high-volatile coal with a low-volatile coal or anthracite can improve the ignition, flame stability and burnout of the blends. This paper discusses two general methods to predict the performance of blended coals: (1) experiment; and (2) indices. Laboratory- and pilot-scale tests, at least, provide a relative ranking of the combustion performance of coal/blends in power station boilers. Several indices, volatile matter content, heating value and a maceral index, can be used to predict the relative ranking of ignitability and flame stability of coals and blends. The maceral index, fuel ratio, and vitrinite reflectance can also be used to predict the absolute carbon burnout of coal and blends within limits. (C) 2000 Elsevier Science Ltd. All rights reserved.
Keyword Thermodynamics
Energy & Fuels
Engineering, Chemical
Engineering, Mechanical
Blended Coals
Pulverized Coal Combustion
Ignitability
Flame Stability
Carbon Burnout
Prediction
Indices
Reactive Fusible Inertinite
Pulverized Fuel Combustion
Thermogravimetric Analysis
Oxidation
Q-Index Code C1

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collection: School of Chemical Engineering Publications
 
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Created: Tue, 14 Aug 2007, 16:13:28 EST