桦甸油页岩热解过程中气体析出特性

发布时间：2018-05-28 15:30

  本文选题：热解 + 气体　； 参考：《化工进展》2017年12期

【摘要】：通过热重-红外-质谱(TG-FTIR-MS)三机联用技术对桦甸油页岩在不同升温速率的条件下进行热解实验,计算了其挥发分气体析出阶段的动力学参数,并对整个热解过程中挥发分气体的析出特性进行了分析,获得了挥发分气体析出的红外三维谱图及CH_4、CO_2、CO、H_2O、CnHm和H_2共6种气体的析出速率随温度变化的规律曲线。其中甲烷作为热解析出的主要气态烃类产物,是多种反应综合作用的结果,故采用分峰拟合的方法对其在升温速率为20℃/min下的析出过程进行分析。结果表明,在300~600℃这一温度区间,甲烷的生成速率曲线可以分为4个峰,代表了4个反应类型,分别计算了其动力学参数,结合桦甸油页岩的结构特性及热解过程中其他气体析出的特性,分析了各个反应甲烷的生成机理。
[Abstract]:The pyrolysis experiments of Huadian oil shale at different heating rates were carried out by means of TG-FTIR-MS3 combined with thermogravimetric infrared mass spectrometry (TG-FTIR-MS), and the kinetic parameters of the volatile gas precipitation stage were calculated. The precipitation characteristics of volatile gases in the whole pyrolysis process were analyzed. The infrared three-dimensional spectra of volatile gases and the curves of the precipitation rates of six gases, CH4CO2CO2CnHm and H2CnHm, as well as the temperature variation of CH4CO2CO2CnHm and H2 were obtained. Methane, as the main gaseous hydrocarbon product, is the result of various reactions. Therefore, the precipitation process of methane at 20 鈩，

本文编号：1947246