催化裂化柴油中多环芳烃加氢转化的分子水平表征

发布时间：2019-06-14 09:34

【摘要】：基于GC-FID/MSD对LTAG工艺开工调试过程中的催化裂化柴油及其加氢生成油进行详细的分子组成表征,通过质谱图解析、NIST谱库检索、沸点规律及保留时间文献对照等,结合内标法实现该催化柴油及其加氢生成油中的萘类、菲类和蒽类等多环芳烃以及四氢萘、八氢菲和八氢蒽等环烷基单环芳烃的分子定性和半定量分析。结果表明,催化柴油及其加氢生成油中C0~C3-萘类和C0~C3-菲/蒽类化合物的分布变化可直观反映LTAG技术加氢单元实现了多环芳烃的高效加氢转化,而四氢萘、八氢菲和八氢蒽等环烷基单环芳烃的分布变化则直观体现出LTAG技术加氢单元实现了对多环芳烃加氢转化深度的有效控制,这将利于催化裂解单元多产高辛烷值汽油和轻芳烃产品。
[Abstract]:Based on GC-FID/ MSD, the detailed molecular composition of catalytic cracking diesel oil and its hydroforming oil in the process of the LTAG process was characterized by mass spectrum analysis, NIST spectrum library search, boiling point rule and retention time literature control, etc. The molecular and semi-quantitative analysis of the catalytic diesel oil and its hydro-generating oil, such as the polycyclic aromatic hydrocarbons, such as the tetrahydro-hydrocarbons, the octahydro-phenanthrene and the octahydro-equal-ring-alkyl monocyclic aromatic hydrocarbons, is realized by using the internal standard method. The results show that the distribution of C0 to C3-phenanthroline and C0 to C3-phenanthrene in the catalytic diesel oil and its hydroforming oil can directly reflect the high-efficiency hydroconversion of the polycyclic aromatic hydrocarbons by the hydrogenation unit of the LTAG technology, and the tetrahydro-diesel oil, The change of the distribution of the cycloalkylmonocyclic aromatic hydrocarbons, such as the octahydrophenanthrene and the octahydrofluorocarbon, shows that the hydrogenation unit of the LTAG technology realizes the effective control of the hydroconversion depth of the polycyclic aromatic hydrocarbons, which will be beneficial to the production of high-octane gasoline and light aromatic products in the catalytic cracking unit.
【作者单位】：中国石化石油化工科学研究院;
【基金】：国家重点基础研究发展规划“973”项目(2012CB224801)资助
【分类号】：TE624.4

【相似文献】