A NEW COMBUSTION CHARACTERISTIC EQUATION BASED ON KOOIJ EQUATION: HEATING RATE, PARTICLE SIZE AND ATMOSPHERE
A new combustion characteristic equation based on the Kooij (Koov) equation instead of the Arrhenius equation and a special factor (the ratio of temperature squared to the heating rate multiplying the ratio of the combustion acceleration to the combustion rate) has been developed in the paper. A Chinese coal (Shenhua) has been processed using ball mills and divided into five fractions (<72, 72-100 100-120, 120-180 and 180-225 um) and analyzed using a NETZSCH STA 409C Thermo-Balance Analyzer. Three groups of experiments are designed: five different heating rates (10, 20, 30, 40 and 50K.min-1); five different particle sizes (as above) and five different atmospheres (O2, 2O2+8CO2, 3O2+7CO2, 2O2+8N2 and 3O2+7N2). The results show that the conventional equation based on the Arrhenius equation is the special case of the new one, and the factor is capable of expressing lots of burning profiles of fuels.
new combustion characteristic equation Kooij equation thermal gravimetry
Yingbiao ZHOU Duping FAN
State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology Wuhan, Hubei 430074, China
国际会议
第六届煤燃烧国际会议(The 6th International Symposium on Coal Combustion)
武汉
英文
52-59
2007-12-01（万方平台首次上网日期，不代表论文的发表时间）