CAJ | 학술논문

对花生壳在升温速率分别为5℃/min、10℃/min、15℃/min和20℃/min的条件下进行热重实验，采用Freeman-Carroll、 Kissinger、 Flynn-Wall-Ozawa和Friedman四种热分析方法，研究花生壳的热行为及其热分解的动力学参数。研究表明，花生壳非等温热解过程可分为失水干燥、快速热解和缓慢分解三个阶段，其中第二阶段是整个过程的主要部分，析出大量挥发分造成明显失重，随着升温速率的增加，最大热解速度提高，对应的峰值温度升高，热滞后现象加重，热解各阶段向高温侧移动。其热解阶段的反应动力学方程为： dα/dt＝4.92×1014[exp（-170.70×103/RT）]（1-α）2.04。
대화생각재승온속솔분별위5℃/min、10℃/min、15℃/min화20℃/min적조건하진행열중실험，채용Freeman-Carroll、 Kissinger、 Flynn-Wall-Ozawa화Friedman사충열분석방법，연구화생각적열행위급기열분해적동역학삼수。연구표명，화생각비등온열해과정가분위실수간조、쾌속열해화완만분해삼개계단，기중제이계단시정개과정적주요부분，석출대량휘발분조성명현실중，수착승온속솔적증가，최대열해속도제고，대응적봉치온도승고，열체후현상가중，열해각계단향고온측이동。기열해계단적반응동역학방정위： dα/dt＝4.92×1014[exp（-170.70×103/RT）]（1-α）2.04。
The thermal behavior and kinetic parameters of the decomposition of peanut hull in a temperature -programmed mode at different heating rate of 5, 10, 15 and 20 ℃/min were investigated based on Freeman -Carroll, Kissinger, Flynn-Wall-Ozawa and Friedman methods by TG.The results showed that the non -isothermal pyrolysis process of peanut hull included three distinct stages of dehydration , fast-pyrolysis and residue slow decomposition.The second stage in which a huge amount of released volatile components caused the distinct weight loss of peanut hull played a main role in the whole process.With the increase of heating rate , the maximum decomposition rate and its corresponding temperatures of peanut hull increased.The TG curve shift to higher temperatures due to the aggravating hermal lag.The kinetic equation of thermol decomposition of peanut hull was expressed as:dα/dt=4.92 ×1014 [exp(-170.70 ×103/RT)](1-α)2.04.