低生焦、低能耗和高烯烃产率的中孔分子筛重油催化裂化工艺研发与工业实践

针对现有催化裂化生产低碳烯烃技术存在着烯烃收率和选择性仍有改善空间的问题，从分子筛材料和变径流化床催化反应工程两个方面进行创新，提出了重质烃高选择性裂解成烯烃的催化裂化工艺，实现了烯烃产品选择性大幅度改善，并进行了工业试验。工业试验结果与中小型试验结果相一致，证明了中孔分子筛-变径流化床催化裂化技术的可行性和高效能，为炼油行业平稳向化工转型提供技术支撑，同时为靶向催化裂化技术深度开发奠定可靠的理论基础和积累丰富的工业实践经验。

DEVELOPMENT AND INDUSTRIAL PRACTICE OF HEAVY OIL CATALYTIC CRACKING PROCESS OVER MESOPOROUS ZEOLITE FOR LOW COKING LOW ENERGY CONSUMPTION AND HIGH OLEFIN YIELD

Based on the innovations of both catalytic materials and reaction engineering of diameter-transformed fluidized bed reactor, the highly selective catalytic cracking process from heavy hydrocarbon to olefins was proposed, and industrial test was carried out, which was aimed at the improvement of the yield and the selectivity of light olefin products. The industrial results were consistent with those of laboratory results, and the selectivity of olefin products was greatly improved. The successful industrialization proved the feasibility and effectiveness of the diameter-transformed fluidized catalytic cracking technology by using mesoporous zeolites catalyst, which could provide technical support for the smooth transformation from oil refining to chemicals. At the same time, it lays a reliable theoretical foundation and accumulates rich industrial practice for the in-depth development of targeted catalytic cracking.