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Investigation of the Reaction Behavior of Albizia gummifera Wood under Steam Gasification with Varied Partial Pressures and Gasification Temperatures

机译:不同分压和气化温度下蒸汽气化白花槐木材的反应行为研究

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摘要

The astronomical increase in global energy demand makes locating energy sources other than fossil fuels worthwhile. The use of tropical biomass wood waste as a renewable energy source was investigated in this study. The thermal conversion analysis of Albizia gummifera (ayinre) was carried out in a thermobalance reactor via steam gasification under varying temperature (700 to 1000 °C) and steam partial pressure (0.020 to 0.050 MPa). The experimental data was evaluated using three gas-solid reaction models. The modified volume reaction model (mVRM) gave the overall highest coefficient of determination (0.9993) and thereby the best conversion prediction. The observed char activation constant rates (from paired reaction conditions) indicated, on average, an increase in reactivity as the parameters increased. The results showed that the activation energy of the mVRM gave the lowest value (32.54 kJ/mol) compared with those of the shrinking core model (SCM) and the volume reaction model (VRM) (49.29 and 49.89 kJ/mol, respectively).
机译:全球能源需求的天文数字的增长使得寻找化石燃料以外的能源变得物有所值。在这项研究中,对使用热带生物质木材废料作为可再生能源进行了研究。在热平衡反应器中,通过在变化的温度(700至1000℃)和蒸汽分压(0.020至0.050 MPa)下进行气化,在热天平反应器中进行木香(ayinre)的热转化分析。使用三种气固反应模型评估了实验数据。改进的体积反应模型(mVRM)给出了总体最高的测定系数(0.9993),从而提供了最佳的转化预测。观察到的焦炭活化常数速率(来自成对的反应条件)平均表明,随着参数的增加,反应性也增加。结果表明,与收缩核模型(SCM)和体积反应模型(VRM)(分别为49.29和49.89 kJ / mol)相比,mVRM的活化能最低(32.54 kJ / mol)。

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