摘要
采用热重分析仪研究了水焦浆的着火、燃烧特性,并与兖州烟煤水煤浆、贵州无烟煤水煤浆进行了对比;通过TG-DTG法确定燃烧特征温度;采用Flynn-Wall-Ozawa法进行反应动力学分析.结果表明,水焦浆的着火和燃尽温度界于烟煤水煤浆和无烟煤水煤浆之间;随升温速率的升高,各样品的着火、燃尽温度升高,说明燃烧反应向高温区转移;可燃性指数随升温速率升高,表明燃烧特性提高;由动力学分析知,在同一转化率下,水焦浆的活化能低于烟煤水煤浆和无烟煤水煤浆;水焦浆具有着火难,但一旦着火,燃烧反应剧烈的特点.
The ignition and combustion characteristics of petroleum coke water slurry （PCWS） were studied by thermogravimetric apparatus, and its combustibility was compared with that of the coal water slurry （CWS） samples made by Yanzhou bituminite and Guizhou anthracite. The ignition temperature was obtained by TG-DTG method and the reaction kinetics was analyzed with Flynn-Wall-Ozawa method. Results show that the ignition and burnout temperatures of PCWS are larger than Yanzhou bituminite CWS, while smaller than Guizhou anthracite CWS; the ignition and burnout temperatures grow higher as the heating rates become larger, which means the combustion process transfers to a higher-temperature zone; the integration index becomes larger, which indicates the combustibility turns better. The dynamic analysis shows that the activation energy of PCWS is lower than CWS at a certain conversion rate; the PCWS has tempestuously once it is ignited. that of Yanzhou bituminite CWS and the characteristic of being difficult to Guizhou anthracite light while burningtempestuously once it is ignited.
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2008年第10期1795-1800,共6页
Journal of Zhejiang University：Engineering Science
关键词
水焦浆
水煤浆
热重分析
燃烧特性
动力学分析
petroleum coke water slurry （PCWS）
coal water slurry （CWS）
thermogravimetry
combus-tibility
dynamic analysis
