碱性木质素与油页岩共热解协同作用的TG-FTIR研究
发布时间：2018-12-20 21:44
【摘要】：通过TG-FTIR与动力学方法,研究碱性木质素与油页岩混合共热解的协同作用。实验结果表明:通过二者加权平均理论值与实验实际值对比,发现在热失重过程中仅在高温热解区间有协同作用。热解动力学研究表明:碱性木质素与油页岩可用组合一级反应动力学来描述,混合质量比为8∶2时反应活化能E在高温热解区间最高,为抑制作用;其他混合比的反应活化能E在高温热解区间最低,为促进作用。通过红外光谱的检测,对共热解过程有明显变化的官能团进行分析,共热解过程析出的CH_4、CO、CO_2、H_2O浓度在高温热解区间均有不同程度的增大,混合比为8∶2时,浓度均为最低。
[Abstract]:The co-pyrolysis of alkaline lignin and oil shale was studied by means of TG-FTIR and kinetics. The experimental results show that by comparing the theoretical values of the weighted average and the experimental values, it is found that there is a synergistic effect only in the high temperature pyrolysis region in the process of thermogravimetric loss. The kinetic study of pyrolysis shows that alkaline lignin and oil shale can be described by combined first-order reaction kinetics. When the mixing mass ratio is 8:2, the activation energy E of the reaction is the highest in the high-temperature pyrolysis region, which is the inhibition effect. The reaction activation energy E of the other mixing ratio is the lowest in the high temperature pyrolysis region, which is the promotion effect. The functional groups with obvious changes in the co-pyrolysis process were analyzed by infrared spectroscopy. The concentration of CH_4,CO,CO_2,H_2O precipitated during the co-pyrolysis process increased to some extent in the high temperature pyrolysis region. When the mixing ratio is 8:2, the concentration is the lowest.
【作者单位】： 东北电力大学油页岩综合利用教育部工程研究中心;
【基金】：吉林省重点科技攻关项目(20140204004SF)
【分类号】：TE662;TK6
，
本文编号：2388446
[Abstract]:The co-pyrolysis of alkaline lignin and oil shale was studied by means of TG-FTIR and kinetics. The experimental results show that by comparing the theoretical values of the weighted average and the experimental values, it is found that there is a synergistic effect only in the high temperature pyrolysis region in the process of thermogravimetric loss. The kinetic study of pyrolysis shows that alkaline lignin and oil shale can be described by combined first-order reaction kinetics. When the mixing mass ratio is 8:2, the activation energy E of the reaction is the highest in the high-temperature pyrolysis region, which is the inhibition effect. The reaction activation energy E of the other mixing ratio is the lowest in the high temperature pyrolysis region, which is the promotion effect. The functional groups with obvious changes in the co-pyrolysis process were analyzed by infrared spectroscopy. The concentration of CH_4,CO,CO_2,H_2O precipitated during the co-pyrolysis process increased to some extent in the high temperature pyrolysis region. When the mixing ratio is 8:2, the concentration is the lowest.
【作者单位】： 东北电力大学油页岩综合利用教育部工程研究中心;
【基金】：吉林省重点科技攻关项目(20140204004SF)
【分类号】：TE662;TK6
，
本文编号：2388446
本文链接：https://www.wllwen.com/kejilunwen/shiyounenyuanlunwen/2388446.html
