Synergistic effect on thermal behavior during co-pyrolysis of lignocellulosic biomass model components blend with bituminous coal
Synergistic effect on thermal behavior during co-pyrolysis of lignocellulosic biomass model components blend with bituminous coal
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DOI：
10.1016/j.biortech.2014.06.105
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发表时间：
2014-10-01
影响因子：
11.4
通讯作者：
Meng, Haiyu
中科院分区：
文献类型：
--
作者：
Wu, Zhiqiang;Wang, Shuzhong;Meng, Haiyu
作为减少碳足迹的有效途径，研究了木质纤维素生物质与煤的共热化学转化。成功地评价共热解的热行为是预测共热解性能和优化共热解效率的前提。本文采用热重分析仪和Kissinger-Akahira-Sunose法，研究了三种木质纤维素生物质模型组分（纤维素、半纤维素和木质素）与一种中国烟煤混合后的热解和动力学特性。结果表明，模型化合物的加入对烟煤的热行为有不同的增效作用。纤维素对炭产率低于计算值的烟煤热分解表现出正向的协同作用。对于半纤维素和木质素，正、负协同作用与混合比例和温度范围有关。混合物的平均活化能分布表现出非加性。(C) 2014 Elsevier Ltd.版权所有。
Co-thermochemical conversion of lignocellulosic biomass and coal has been investigated as an effective way to reduce the carbon footprint. Successful evaluating on thermal behavior of the co-pyrolysis is prerequisite for predicting performance and optimizing efficiency of this process. In this paper, pyrolysis and kinetics characteristics of three kinds of lignocellulosic biomass model components (cellulose, hemicellulose, and lignin) blended with a kind of Chinese bituminous coal were explored by thermogravimetric analyzer and Kissinger-Akahira-Sunose method. The results indicated that the addition of model compounds had different synergistic effects on thermal behavior of the bituminous coal. The cellulose showed positive synergistic effects on the thermal decomposition of the coal bituminous coal with lower char yield than calculated value. For hemicellulose and lignin, whether positive or negative synergistic was related to the mixed ratio and temperature range. The distribution of the average activation energy values for the mixtures showed nonadditivity performance. (C) 2014 Elsevier Ltd. All rights reserved.