Chi, T. and Zhang, H. and Yan, Y. and Zhou, H. and Zheng, H. (2010) Investigation into the Ignition Behaviours of Pulverized Coals and Coal Blends in a Drop Tube Furnace using Flame Monitoring Techniques. Fuel, 89 (3). pp. 743-751. ISSN 0016-2361.
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This paper presents experimental investigations into the ignition behaviors of pulverized coals and coal blends in a drop tube furnace using a flame monitoring system. Seven different ranks of coals and coal blends of different mixing proportion were tested. Characteristic parameters including relative ignition temperature, maximum ignition points, oscillation frequency, fluctuation ratio and combustion dynamic energy were determined from the flame monitoring system. The ignition behaviours of the coals are established by combining the parameters. Results demonstrate that the parameters are suitable for distinguishing ignition behaviors from homogeneous, hetero-homogeneous to heterogeneous in the ignition section of a drop tube furnace. The ignition behaviors of a coal blend are found to have similar characteristics as the coal of higher volatile matter in the blend and depend on its proportion in the blend. The results from this study are used to predict the operation of a coal fired power plant in terms of fuel selection, fuel blending, and flame stability.
|Uncontrolled keywords:||Drop tube furnace, flame monitoring, ignition behavior|
|Subjects:||T Technology > TA Engineering (General). Civil engineering (General) > TA166 Instrumentation|
|Divisions:||Faculties > Science Technology and Medical Studies > School of Engineering and Digital Arts > Instrumentation, Control and Embedded Systems|
|Depositing User:||J. Harries|
|Date Deposited:||29 Jun 2011 13:09|
|Last Modified:||02 Dec 2011 12:52|
|Resource URI:||http://kar.kent.ac.uk/id/eprint/23447 (The current URI for this page, for reference purposes)|
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