水洗油菜秸秆对与烟煤共燃烧热特性及相互作用的潜力。
Potential of water-washing of rape straw on thermal properties and interactions during co-combustion with bituminous coal.
机构信息
Laboratory of Biomass and Bioprocessing Engineering, College of Engineering, China Agricultural University, Beijing 100083, China.
Laboratory of Biomass and Bioprocessing Engineering, College of Engineering, China Agricultural University, Beijing 100083, China.
出版信息
Bioresour Technol. 2017 Jun;234:53-60. doi: 10.1016/j.biortech.2017.03.018. Epub 2017 Mar 7.
The aim of this work was to study the thermal properties and interactions during co-combustion of rape straw (RS) before and after water-washing with bituminous coal. A series of experiments was conducted to investigate the properties and interactions during co-combustion of RS with bituminous coal (at 10, 20, 40 and 60% RS). The feasibility and potential of water-washing as an RS pre-treatment was also explored. Reactivity and the amount of heat released followed a quadratic trend, while changes to the degree of interactions between the fuels conformed to a cosine curve. Water-washing increased the ignition and burn-out temperatures and slightly decreased reactivity. Demineralization negatively affected the previously synergistic co-firing relationship, nevertheless, the amount of heat released increased by 10.28% and the average activation energy (146kJ/mol) was lower than that of the unwashed blend (186kJ/mol). Overall, water-washing of RS could prove a useful pre-treatment before co-combustion with bituminous coal.
本工作旨在研究水洗前后油菜秸秆（RS）与烟煤共燃烧过程中的热特性和相互作用。进行了一系列实验，以研究 RS 与烟煤（在 10、20、40 和 60% RS 下）共燃烧过程中的特性和相互作用。还探索了水洗作为 RS 预处理的可行性和潜力。反应性和释放的热量遵循二次趋势，而燃料之间相互作用程度的变化符合余弦曲线。水洗提高了着火和燃尽温度，略微降低了反应性。除矿物质作用对以前的协同共燃关系产生负面影响，但释放的热量增加了 10.28%，平均活化能（146kJ/mol）低于未水洗混合物（186kJ/mol）。总的来说，水洗 RS 可以证明在与烟煤共燃烧之前是一种有用的预处理方法。
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