油页岩热解过程中微量元素迁移及其作用规律

发布时间：2018-06-21 08:56

本文选题：油页岩 + 热解　；参考：《化工学报》2017年10期

【摘要】：利用电感耦合等离子质谱仪(ICP-MS)测定油页岩样品和不同终温下热解半焦中13种金属微量元素的含量,分析这些元素在样品中的含量分布特征及其迁移规律。结果显示:龙口油页岩中富集Ba、Cd,巴里坤油页岩中富集Ba、Cd、Li、V、Sb,且样品中多数微量元素在500℃时挥发性最强。将不同形态的微量元素负载于干酪根上并进行热重分析,根据热重结果计算其动力学,再通过裂解气质联用实验(PY-GC/MS)测定干酪根和浸渍硝酸镍的干酪根热解时烷烃类产物的相对含量,研究微量元素对干酪根热解生烃转化率、热解速率以及产物分布的影响。结果表明:微量元素的盐类可以催化干酪根热解生烃,增大其热解转化率和热解速率,提高轻组分烷烃产率,降低重组分烷烃产率。
[Abstract]:An inductively coupled plasma mass spectrometer (ICP-MS) was used to determine the content of 13 metals in the oil shale samples and the pyrolysis char at different final temperatures. The distribution characteristics and migration rules of these elements in the samples were analyzed. The results showed that the enrichment of Ba, Cd, and the enrichment of Ba, Cd, Li, V, Sb in the oil shale of Longkou oil shale and the samples were also found in the samples. Most trace elements have the strongest volatility at 500 C. The trace elements of different forms are loaded on the kerogen and thermogravimetric analysis is carried out. The kinetics is calculated according to the thermogravimetric results. The relative content of paraffin products is determined by the pyrolysis gas chromatography-mass test (PY-GC/MS), and the trace elements are studied. The effect of elements on the conversion rate of hydrocarbon generation, the rate of pyrolysis and the distribution of products showed that the salts of trace elements could catalyze the pyrolysis of kerogen to produce hydrocarbon, increase the pyrolysis conversion rate and the pyrolysis rate, increase the yield of light component alkanes and reduce the yield of the recombinant paraffin.
【作者单位】：中国石油大学(北京)理学院;
【基金】：国家重点基础研究发展计划项目(2014CB744302) “泰山学者”建设工程专项(ts20120518) 中国石油大学(北京)科研启动基金项目(2462015YJRC002)~~
【分类号】：TE662

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