摘要
实验采用ＴＧ１５１型高压热天平对不同热解压力和热解升温速率下煤焦炉气共热解半焦燃烧反应性进行了考察。主要考察半焦燃烧的特征参数如着火温度（Ｔｉ）、最大燃烧速率峰温（ＴＭ）和燃尽温度（Ｔｆ），最大燃烧速率（ＲＭ）以及燃尽时间（ｔ），通过燃烧特征参数（燃尽时间ｔ）和ＴＧ及ＤＴＧ数据的相关动力学分析（Ｒｆ图）来描述半焦燃烧反应性能。结果表明，热解压力越高，其半焦燃烧反应性越差，在慢速升温情况下尤为明显；热解升温速率越快其半焦燃烧反应性越好，在较高压力下更为明显。先锋褐煤与焦炉气共热解半焦的反应活性与其加氢热解半焦的反应活性相当，但两者均略低于氮气氛下热解半焦的反应性。
The combustion reactivities of Xianfeng lignite chars obtained from copyrolysis with cokeoven gas at different operation conditions were systematically investigated by TG/DTG and its resultant combustion characteristic parameters and Rf curves The results indicated that the comubstion reactivities of the chars are related to pyrolysis processing conditions With the increase of pyrolysis pressure, the chars reactivity gradually decreases, however, the effect of pressure on chars reactivity becomes less remarkable at a higher heating rate At a given pressure the reactivity of chars increases with the rise of heating rate, and this effect was found to be more notable under a higher pressure The reactivities of chars from coal copyrolysis with cokeoven gas are similar to those from hydropyrolysis, but lower than those from pyrolysis under N 2
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
1997年第3期207-212,共6页
Journal of Fuel Chemistry and Technology
基金
日本NEDO资助
山西省自然科学基金
山东省自然科学基金
关键词
煤
热解
半焦
燃烧
焦炉煤气
pyrolysis, cokeoven gas, char, combustion reactivity, TGA
