直馏柴油加氢改质多产乙烯原料的技术开发和工业应用

为了调整产品结构、降低柴汽比、增加蒸汽裂解制乙烯原料（简称乙烯原料）的多样性，从而提高经济效益，中国石化石油化工科学研究院（简称石科院）开发了直馏柴油多产乙烯原料的加氢改质技术。中试研究结果表明，以直馏柴油为原料，采用石科院自主研发的专用催化剂，能够生产高链烷烃含量的柴油产品，可作为优质的乙烯原料。工业应用结果表明，采用该技术能够长周期稳定生产链烷烃质量分数55%以上的柴油产品作为优质乙烯原料，为炼油企业调整产品结构、向化工转型提供了技术支撑。

DEVELOPMENT AND INDUSTRIAL APPLICATION OF STRAIGHT-RUN DIESEL HYDROUPGRADING TO MAXIMIZE STEAM CRACKING FEEDSTOCK

In order to adjust the product structure, reduce the diesel/gasoline ratio, diversify steam cracking feedstock, and increase the economic benefits, the straight-run diesel hydroupgrading process to maximize the steam cracking feedstock was developed by SINOPEC Research Institute of Petroleum Processing (RIPP). The results showed that the diesel fraction produced by the developed hydroupgrading process with the proprietary catalyst developed by RIPP possessed high paraffin content and low aromatics content and was a good feedstock for steam cracking process. The industrial application demonstrated that the diesel fraction produced had a yield higher than 90% and contained more than 55% of paraffin, and could be stably produced for long-term. The developed technology provides a solid technical support for refineries to adjust the product structure and transform to chemical industry.