摘要
对稻壳生物油在空气气氛下进行了热重分析,并计算得到生物油的挥发、降解和残炭燃烧的活化能分别为63.11 kJ/mol、81.01 kJ/mol和161.29 kJ/mol。在自砌的小型工业窑炉上开展了生物油燃烧实验,研究了生物油的点火工艺和燃烧污染物的排放规律。通过调整喷雾速度和喷嘴结构,在炉膛预热并使用明火点火源的情况下,生物油可以顺利点火。生物油燃烧容易生成CO,提高过量空气系数能有效地控制CO的生成,但同时会生成更多的NOx。在生物油中添加甲醇和乙醇助剂后,点火容易,燃烧温度提高,尾气中CO和NOx含量都一定程度的下降。
The thermogravimetric analysis of the rice husk bio-oil under the air atmosphere was performed. The activation energies for the volatilization, decomposition and char combustion of bio-oil are obtained to be 63.11 kJ/mol, 81.01 kJ/mol and 161.29 kJ/mol, respectively. The experiments for the bio-oil combustion were carried out in a small kiln to focus on the ignition and pollutant emission characteristics. With the modification of the nozzle and the adjustment of the spray velocity, the bio-oil can be ignited successfully by using a pilot flame to preheat the kiln chamber. Bio-oil combustion has the tendency to form CO, which can be effectively reduced with a higher excess air ratio, but the formation of NOx will be increased. By adding methanol or ethanol into bio-oil, the ignition of bio-oil becomes easy, the temperature of combustion is increased, and the formation of CO and NOx is decreased.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2008年第5期577-582,共6页
Journal of Fuel Chemistry and Technology
基金
国家自然科学基金(50576091)
国家重点基础研究发展规划(973计划,2007CB210203)
中国科学院方向性项目(KGCX2-YW-306-4)
关键词
生物油
热重分析
燃烧
窑炉
污染物
bio-oil
thermogravimetric analysis
combustion
kiln
pollutant emission
