摘要
为研究工业锅炉颗粒配煤特性,以鸡西地区的长焰煤和俄罗斯进口煤为试验原料,研究了单质煤及颗粒配煤的挥发分、热值及着火特性。结果表明,18种配煤方案中有13种配煤方案实测挥发分高于计算挥发分,占总配煤方案的72.2%,总体上实测挥发分高于其计算值且具有线性关系,线性相关度R=0.962 3。有15种配煤方案实测热值比计算值低,占总配煤方案的83.33%,只有3种配煤方案的实测热值比计算值高,占总配煤方案的16.67%,总体上实测热值比计算热值小且具有线性关系,线性相关度R=0.966 1。说明在允许的误差范围内,工业锅炉颗粒配煤挥发分和热值可由其计算值来预测。着火温度随燃料比的增大而升高且具有线性关系,线性相关度R=0.901 1,颗粒配煤的燃料比越大,着火越困难。
In order to improve thermal efficiency of industrial boiler,the volatile,calorific value and ignition characteristics of single coal and granular coal blending of long-flame coal from Jixi and import coal from Russia were studied. The results showed that 13 of 18 kinds of coal blending schemes presented higher volatile than calculated value,accounting for 72. 2%. On the whole,the measured volatile was higher than the calculated value and they had a linear relationship,the linear correlation R was 0. 962 3. The measured calorific values of15 coal blending schemes were lower than the calculated values,accounting for 83. 33%. The measured calorific value was smaller than its calculated calorific value and they had a linear relationship. On the whole,the linear correlation R was 0. 966 1. Within the permitted error,volatile and calorific value of granular coal blending in industrial boiler could be predicted by the calculated value. Ignition temperature increased with the increase of fuel ratio and they had linear relationship,the linear correlation R was 0. 901 1. A higher fuel ratio was against ignition.
出处
《洁净煤技术》
CAS
2016年第3期6-10,共5页
Clean Coal Technology
基金
黑龙江省科技攻关计划资助项目(GZ11A402)
黑龙江省应用技术研究与开发计划资助项目(GC13A112)
关键词
颗粒配煤
挥发分
热值
着火特性
granular coal blending
volatile
calorific value
ignition characteristic
