Global excess capacity of lubricating oil and high-value added utilization of naphthenic-based heavy oil concerns have attracted tremendous attention. Enhancing the highly efficient transformation for polycyclic aromatic hydrocarbons (PAHs) rich in naphthenic-based vacuum gas oil to light olefins and aromatics could be a promising solution through systematic process integration. Four naphthenic-based heavy oil processing schemes, hydrotreating, hydrocracking, hydro-upgrading and deep catalytic cracking, and a novel deep hydrogenation coupled with the two stage risers of maximizing propylene process (DHTMP), are brought up. The process simulation and models are established for the processing schemes to gain detailed mass balance and energy consumption results. The operating parameters are optimized for the purpose of maximizing light olefins and aromatics. The economic and life cycle environmental assessment are conducted to determine the superiority of DHTMP process over other schemes. The DHTMP process realized full recovery and utilization of low-value light cycle oil and efficient transformation of PAHs to light olefins and aromatics. Moreover, the DHTMP process shows great performance from the techno-economic and life cycle environment aspect. The results in this study have great guiding significance to the process intensification of PAHs in vacuum gas oil converting to light olefins and aromatics products efficiently.

全球润滑油的过剩产能以及基于环烷烃的重油的高附加值利用问题引起了极大的关注。通过系统化的工艺集成，增强将富含环烷基真空瓦斯油的多环芳烃（PAH）高效转化为轻质烯烃和芳烃的方法可能是一个有前途的解决方案。提出了四种以环烷烃为基础的重油加工方案，即加氢处理，加氢裂化，加氢提质和深度催化裂化，以及一种新型的深度加氢，并结合了使丙烯工艺最大化的两级立管（DHTMP）。建立处理方案的过程仿真和模型，以获得详细的质量平衡和能耗结果。为了最大化轻质烯烃和芳烃的目的，优化了操作参数。进行了经济和生命周期环境评估，以确定DHTMP工艺相对于其他方案的优越性。DHTMP工艺实现了低价值轻循环油的充分回收和利用，以及PAHs高效转化为轻质烯烃和芳烃的能力。此外，从技术经济和生命周期环境方面来看，DHTMP过程显示出了出色的性能。本研究结果对真空瓦斯油中PAHs有效转化为轻质烯烃和芳烃产品具有重要的指导意义。DHTMP工艺实现了低价值轻循环油的充分回收和利用，以及PAHs高效转化为轻质烯烃和芳烃的能力。此外，从技术经济和生命周期环境方面来看，DHTMP过程显示出了出色的性能。本研究结果对真空瓦斯油中PAHs有效转化为轻质烯烃和芳烃产品具有重要的指导意义。DHTMP工艺实现了低价值轻循环油的充分回收和利用，以及PAHs高效转化为轻质烯烃和芳烃的能力。此外，从技术经济和生命周期环境方面来看，DHTMP过程显示出了出色的性能。本研究结果对真空瓦斯油中PAHs有效转化为轻质烯烃和芳烃产品具有重要的指导意义。