基于科艾定律的燃烧指标的实验研究  

Experimental Study of Combustion Characteristic Index Based on the Kooij Law

作　　者：周英彪[1] 范杜平[1] 段权鹏[1] 傅培舫[1] 

机构地区：[1]煤燃烧国家重点实验室(华中科技大学),湖北省武汉市430074

出　　处：《中国电机工程学报》2008年第2期39-42,共4页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50576025)。~~

摘　　要：运用基于科艾（Kooij）定律而非Arrhenius定律的燃烧特征方程和一种特殊因子（温度平方与升温速率之比乘以燃烧加速度与燃烧速率之比）研究不同升温速率和颗粒尺寸实验条件下的燃烧特性。使用德国的NETZSCH STA 409C热重分析仪进行2组实验——5种不同升温速率（10，20，30，40及50K·min^-1）和5种不同的颗粒尺寸（〈72，72～100100～120，120—180及180-225μm）。实验表明了随着升温速率的增加，温度延迟增加，灰分含量减少，燃尽温度增加：随着颗粒尺寸的减小，挥发分开始析出并燃烧的温度降低，燃烧峰值提高，燃烧峰宽变窄，灰分含量增加。The combustion characteristic with different heating rates and particle sizes was studied using a new combustion characteristic equation based on the Kooij law instead of the Arrhenius law and a special factor （the ratio between temperature square and the heating rate multiplying the ratio between the combustion acceleration and the combustion rate） were developed. Using a NETZSCH STA 409C thermo-balance, three groups of experiments were designed： five different heating rates （10, 20, 30, 40 and 50 K× min^-1） and five different particle sizes （〈72, 72-100 100-120, 120-180 and 180-225 μm）. The experimental results indicate that with the heating rate increasing, the temperature delay increases, the ash content decreases and the burnout temperature increases; with the particle size decreasing, the ignite temperature of the volatile decreases, the combustion peak value increases, the peak width of combustion narrowed and the ash content increases.

关 键 词：燃烧特征方程 热重分析 燃烧指标 升温速率 颗粒尺寸 

分 类 号：TK16[动力工程及工程热物理—热能工程] TK22