The investigation of co-combustion characteristics of tobacco stalk and low rank coal using a macro-TGA
The investigation of co-combustion characteristics of tobacco stalk and low rank coal using a macro-TGA
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DOI：
10.1016/j.fuel.2018.09.149
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发表时间：
2019-02-01
期刊：
影响因子：
7.4
通讯作者：
Li, Qinghai
中科院分区：
文献类型：
--
作者：
Cong, Kunlin;Han, Feng;Li, Qinghai
采用自行设计的宏观热重分析仪对烟梗、低阶煤及其共混物的宏观共燃特性进行了研究。研究了烟梗与煤在共燃过程中的相互作用，以及烟梗与煤的比例对共燃过程的影响。结果表明，增加烟梗比例对降低燃尽温度比提高着火温度更有效。与煤（408℃~ 412℃）相比，在不同加热速率下，烟秆的点燃温度（254℃~ 321℃）差异很大。烟梗与煤混合在着火前产生抑制相互作用，随着温度的升高逐渐转化为促进作用。当烟柄质量百分比为70%时，促进作用最为显著。本研究结果可用于了解烟梗/煤的燃烧情况，为烟梗在工业锅炉上的进一步高效应用提供依据。
The macroscopic co-combustion characteristics of tobacco stalk, low rank coal, and their blends were investigated in a custom-designed macro-TGA. The interaction between tobacco stalk and coal during co-combustion, as well as effect of the proportion of the two, were also studied. The results showed that increasing the proportion of tobacco stalk was more effective in reducing the burnout temperature than the ignition temperature. The ignition temperature of the tobacco stalk (254 degrees C to 321 degrees C) varied greatly at different heating rates compared with coal (408 degrees C to 412 degrees C). The mixing of tobacco stalk and coal produced an inhibitory interaction before ignition, and gradually transformed into a promotion with the increase in temperature. The promoting interaction was most significant for the blends with tobacco stalk weight percentage of 70%. The results obtained in this study may be used to the understanding of the combustion of tobacco stalk/coal and also provide a basis for further applying tobacco stalks on industrial boilers with high efficiency.