Abstract Co-pyrolysis behavior of kraft lignin (KL) and lignite (LI) was studied by thermogravimetry (TG) combined with on-line photoionization time-of-flight mass spectrometry (PI-TOF-MS) to get insights into the synergetic effect on the total yield and detailed composition of volatile. Significant synergetic effect was observed between KL and LI during co-pyrolysis processes, especially near the temperature with maximum weight loss rate. The interactions of typical co-pyrolysis products were figured out via the real-time and online mass spectrometry and was evaluated by comparing the experimental value with the calculated theoretical value. The results showed that the synergetic effect was beneficial to enhance the production of volatile and decrease the total yield of char. The interaction on typical co-pyrolysis products was further discussed. The result may provide useful guidance for the practical co-conversion of biomass and low-rank coal.

中文翻译：

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木质素和褐煤共热解的在线光电离质谱研究：协同效应的洞察

摘要 通过热重分析 (TG) 结合在线光电离飞行时间质谱 (PI-TOF-MS) 研究了硫酸盐木质素 (KL) 和褐煤 (LI) 的共热解行为，以了解协同效应。关于挥发分的总收率和详细成分。在共热解过程中，KL 和 LI 之间观察到显着的协同效应，尤其是在具有最大失重率的温度附近。典型的共热解产物的相互作用是通过实时和在线质谱法计算出来的，并通过将实验值与计算的理论值进行比较来评估。结果表明，协同作用有利于提高挥发分产量，降低焦炭总收率。进一步讨论了典型共热解产物的相互作用。