富氢等离子体重油转化体系中自由基诊断研究

项目名称： 富氢等离子体重油转化体系中自由基诊断研究

项目编号： No.51507169

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 电工技术

项目作者： 王瑞雪

作者单位： 中国科学院电工研究所

项目金额： 22万元

中文摘要： 低温等离子体重油加工技术具备低能耗、高效、无污染等特点，可获得高品质的轻质油和乙烯等高附加值气体产物。在该体系中，化学反应主要由自由基主导和调控，定量研究自由基的时空分布特性对于理解反应体系中基本物理化学过程、提高重油的转化率、控制目标产物的选择性和降低成本有着重要意义。本项目拟联合采用发射光谱、双光子激光诱导荧光光谱和光腔衰荡光谱等技术实现CH4等富氢等离子体重油转化体系中H、CH3、CH2、CH等自由基绝对浓度的高时空分辨测量，并获得等离子体物理特性参数。研究不同放电参数、气体流量以及反应时间对等离子体中自由基和基本物理参数的影响，优化产生的自由基浓度，建立等离子体重油加工体系中自由基浓度与反应参数、重油转化产物之间的定量关系。深入了解自由基参与的主要反应途径，讨论富氢等离子体对重油的作用机理，为等离子体技术在炼油领域的应用提供重要参考价值。

中文关键词： 自由基诊断；纳秒脉冲；富氢等离子体；重油转化；甲烷

英文摘要： Heavy oil conversion assisted by low temperature plasma technology offers advantages such as low cost, high efficiency and contamination-free, and results in the production of high quality light oil and high value-added gas products. When heavy oil is exposed to plasma, many of the chemical processes are regulated by the reactive species generated in the multiphase system. The quantitative and spatial-temporal studies of the reactive species are therefore of great importance for understanding the basic physical and chemical processes, and in turn will contribute to improving the conversion efficiency, production selectivity and cost control. In this project, spatial-temporal distribution and quantitative measurement of H, CH3, CH2 and CH radicals and basic plasma parameters will be determined by optical emission spectra (OES), cavity ring-down spectroscopy (CRDS) and two-photon absorption laser-induced fluorescence (TALIF) spectroscopy. Quantitative relationships between the reaction parameters, the free radicals and the conversion products will be studied. Main chemical pathways and the reaction mechanisms involved in the heavy oil conversion process will be analyzed. This research will shed light on further applications of atmospheric pressure non-thermal plasma in the field of petroleum refining.

英文关键词： reactive radical diagnosis;nanosecond pulse;hydrogen rich plasma ;heavy oil converstion;mathane