Analysis of cyclic combustion of solid fuels

被引：51
|
作者：
GaJewski, Wladyslaw [1 ]
Kijo-Kleczkowska, Agnieszka [1 ]
Leszczynski, Jacek [2 ]
机构：
[1] Czestochowa Tech Univ, Dept Boilers & Thermodynam, PL-42200 Czestochowa, Poland
[2] Czestochowa Tech Univ, Inst Math & Comp Sci, PL-42200 Czestochowa, Poland
来源：
FUEL | 2009年 / 88卷 / 02期
关键词：
Circulating fluidized bed (CFB); Kinetics of combustion reaction; Coal; COAL; FRAGMENTATION;
D O I：
10.1016/j.fuel.2008.07.009
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The cyclic nature of coal particles combustion results from the movement of loose material in the flow contour of the circulating fluidized bed (CFB): the combustion chamber, the cyclone, the downcomer. The experimental results proved that the cyclic change of the oxygen concentration around coal particles, led to the vital change of both mechanism and combustion kinetics. The mathematical model of the process of coal combustion has been scientifically described whose original concept is based on the allowance for cyclic changes of concentrations of oxygen around the char particle. It enables the prognosis for change of the surface and the centre temperatures and a mass loss of the char particles during the cyclic combustion. It allows to appoint mass-rate of combustion of a char particle in the above conditions. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：221 / 234
页数：14
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