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Synergistic effects from co-pyrolysis of low-rank coal and model components of microalgae biomass

机译：低品位煤与微藻生物质模型组分共热解的协同效应

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摘要

Synergistic effects from co-pyrolysis microalgae biomass with low-rank coal were investigated in this work. Model compounds of three main component in microalgae algae (glycine, medium chain triglyceride and starch), spirulina and simulated spirulina were chosen to Shenfu bituminous pyrolysis process. Kinetic parameters were solved through isoconversional method, and scanning electron microscopy with energy dispersive spectroscopy were applied for characterizing the char samples. Results revealed synergistic effects occurred with different forms from co-pyrolysis of microalgae primary compounds and coal. Positive synergistic effects, which were defined as higher volatile yield than calculated value, were found in medium chain triglyceride and coal mixtures at all mass ratio. Whether positive or negative synergistic effects on products yield from glycine or starch blended with coal hinged on the temperature and mixing ratio. Both spirulina and simulated spirulina show optimal performance on volatile yields under 50 wt.% mass ratio. Non-additivity phenomenon was observed on the distribution of average activation energy. Synergistic effects from co-pyrolysis of coal and microalgae biomass may attributes to the integrative action of the three model compounds. (C) 2016 Elsevier Ltd. All rights reserved.
机译：在这项工作中，研究了共热解微藻生物质与低阶煤的协同效应。选择了微藻藻类中的三个主要成分（甘氨酸，中链甘油三酸酯和淀粉），螺旋藻和模拟螺旋藻的模型化合物进行神府沥青热解过程。动力学参数通过等转化方法求解，并用能谱仪进行扫描电子显微镜表征。结果表明，微藻类初级化合物和煤的共热解以不同形式发生了协同作用。在所有质量比的中链甘油三酸酯和煤混合物中都发现了正的协同效应，其定义为挥发度高于计算值。甘氨酸或淀粉与煤混合后对产品产生的正或负协同作用取决于温度和混合比。螺旋藻和模拟螺旋藻在质量比低于50 wt。％时均表现出最佳的挥发性收率。在平均活化能的分布上观察到非可加性现象。煤和微藻生物质共热解的协同效应可能归因于三种模型化合物的整合作用。 （C）2016 Elsevier Ltd.保留所有权利。

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