石油学报(石油加工) ›› 2017, Vol. 33 ›› Issue (3): 507-514.doi: 10.3969/j.issn.1001-8719.2017.03.015

• 研究报告 • 上一篇    下一篇

干酪根热解过程中的热解特性分析

王擎,张岩,迟铭书   

  1. 东北电力大学 油页岩综合利用教育工程部研究中心,吉林 吉林 132012
  • 收稿日期:2016-05-25 修回日期:2016-12-07 出版日期:2017-05-25 发布日期:2018-02-27
  • 基金资助:

    国家自然科学基金项目(51276034)和长江学者和创新团队发展计划项目(IRT13052)资助

Characteristics Analysis in the Process of Kerogen Pyrolysis

 WANG Qing, ZHANG Yan, CHI Mingshu   

  1.  Engineering Research Center of Oil Shale Comprehensive Utilization, Ministry of Education, Northeast Dianlian University, Jilin 132012, China
  • Received:2016-05-25 Revised:2016-12-07 Online:2017-05-25 Published:2018-02-27
  • Supported by:
     

摘要:  基于热重实验和红外分析技术以及TGMS联用技术,考察了中国吉林桦甸、延吉汪清、山东龙口3个地区的3种油页岩干酪根,在升温速率20℃/min条件下的热解特性、官能团结构的变化以及轻质气体的析出规律。结果表明,干酪根中有机官能团的热解温度范围为350~520℃,其中桦甸干酪根的失重量最大,失重质量分数占总失重质量分数的86%,生油潜力最佳。在热解过程中首先分解的是含氧官能团和脂肪族结构,其次为芳香烃结构,并且活化能最小的先析出。热解过程中轻质气体CnHm、CH4、CO2、CO的析出速率均呈现1个最大的峰值,析出温度集中在400~550℃范围内,并在500℃左右达到最大值,这与热重曲线在该温度范围内有较大峰值相对应,在干酪根有机官能团热解过程中,分段求解的动力学参数符合热解规律。

关键词: 干酪根, 热解, TG-FTIR联用, 反应动力学, 轻质气体

Abstract: Based on analysis of thermogravimetric experiments and infrared technology and TGMS,three kinds of oil shale kerogen from three areas of the Chinese Jilin Huadian,Yanji Wangqing,Shandong Longkou were studied with the heating rate of 20℃/min under the conditions of pyrolysis characteristics,functional structure and light gas evolution law. The results showed that the organic functional groups in the kerogen pyrolysis mainly within the range of 350—520℃,and at this stage the Huadian kerogen of mass loss was the largest. The biggest mass fraction of mass loss accounted for 86% of the total mass loss rate,which had the best genetic potential. In the process of the thermal decomposition,the first decomposition was oxygen containing functional group and aliphatic structure, followed by the aromatic hydrocarbon structure,and the one with the lowest activation energy separated out first. The light gas CnHm,CH4,CO2 and CO showed the biggest peak during the process of thermal decomposition,strong precipitation condition mainly concentrated in the 400-550℃,and peaked at about 500℃,which was corresponding to the larger peak of thermogravimet curve at the same temperature range. In the process of kerogen pyrolysis of organic functional groups,subsection solutions conformed to the law of pyrolysis kinetics parameters. 

Key words: kerogen, pyrolysis, TG-FTIR combined, reaction kinetics, light gas

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