Abstract The interactions of corncob volatiles and lignite in the process of rapid co-pyrolysis and the effects on their product distributions and properties were examined for the efficient co-utilization of biomass and lignite. A novel two-stage, three-tube reactor was used to do co-pyrolysis experiments, which allowed the verification of interactions occurred only between corncob volatile and lignite. Raw corncob and its demineralized sample were employed for studying the different interactions of organic radical fragments and AAEMs in corncob volatiles on lignite. It was found that the interactions resulted in the decreased liquid yields but increased gas yields, and varied oxidative reactivity of lignite char by changing its chemical structure. There exist different effects on product distribution and property for organic radical fragments and AAEMs in corncob volatiles. The former could promote the interaction of nascent char-volatiles and accelerate the stabilization of radical fragments, the latter mainly catalyzed the decomposition reaction of corncob matrix below 700 °C, while mainly volatilized and catalyzed the reactions between volatiles in gaseous phase when the temperature was above 700 °C.

中文翻译：

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快速共热解过程中玉米芯挥发物与褐煤相互作用对其产物的影响

摘要 研究了玉米芯挥发物和褐煤在快速共热解过程中的相互作用及其对产物分布和性质的影响，以实现生物质和褐煤的有效共利用。一种新型的两级三管反应器用于进行共热解实验，可以验证仅在玉米芯挥发物和褐煤之间发生相互作用。使用生玉米芯及其脱矿质样品研究褐煤上玉米芯挥发物中有机自由基碎片和 AAEM 的不同相互作用。发现相互作用导致液体产率降低但气体产率增加，并且通过改变褐煤炭的化学结构改变其氧化反应性。玉米芯挥发物中的有机自由基碎片和AAEM对产物分布和性质存在不同的影响。前者能促进新生炭挥发物的相互作用，加速自由基碎片的稳定，后者在700℃以下主要催化玉米芯基体的分解反应，而在700℃以下主要挥发和催化气相挥发物之间的反应。 700℃以上。