CAJ | 학술논문

利用热重（TG）-傅里叶变换红外光谱（FTIR）联用对生物柴油的热解及气体产物的释放特性进行了研究，并通过非预置模型法的Vyazovkin算法和Avrami理论计算了生物柴油热解的活化能和反应级数等动力学参数。生物柴油在554～773K区间存在失重率约为87.59%的失重阶段，伴随的热解气体产物主要包括CO2、H2O、CH4和其他有机化合物，其中主要气相产物析出规律一致，但浓度存在差异。随着升温速率的提高，生物柴油的热解向高温区移动。同时，生物柴油的热解呈现多段特性，在不同转化率区间，动力学参数变化较大，活化能为100.48～151.14kJ/mol，反应级数为1.21～1.24。
이용열중（TG）-부리협변환홍외광보（FTIR）련용대생물시유적열해급기체산물적석방특성진행료연구，병통과비예치모형법적Vyazovkin산법화Avrami이론계산료생물시유열해적활화능화반응급수등동역학삼수。생물시유재554～773K구간존재실중솔약위87.59%적실중계단，반수적열해기체산물주요포괄CO2、H2O、CH4화기타유궤화합물，기중주요기상산물석출규률일치，단농도존재차이。수착승온속솔적제고，생물시유적열해향고온구이동。동시，생물시유적열해정현다단특성，재불동전화솔구간，동역학삼수변화교대，활화능위100.48～151.14kJ/mol，반응급수위1.21～1.24。
The pyrolysis characteristic of biodiesel was investigated by the thermogravimetric coupled with the Fourier transform infrared spectroscopy,where the composition of the released gas was also determined. Further,the model free approach of the Vyazovkin method and the Avrami theory were used to calculate the activation energy and the reaction order,respectively. The mass loss segment existed from 554K to 773K during the biodiesel pyrolysis process and the accompanied mass loss percentage was about 87.59%. During the pyrolysis,the gas released mainly included CO2、H2O、CH4 and other organic compounds. The main gases showed consistent regularity but with different density. Meanwhile,as temperature heating rate increased,the decomposition process was shifted to the higher temperature zone. Calculations of the kinetic parameters demonstrated the multistage and the complicated characteristics of the biodiesel pyrolysis,where the variation for the activation energy was from 100.48kJ/mol to 151.14kJ/mol and for the reaction order was from 1.21 to 1.24.