优化丙烯生成的催化裂解催化剂的特性及其性能评价

Properties and Evaluation of Optimized Deep Catalytic Catalyst for Increasing Propylene Yield

针对由顺序和平行反应组成的催化裂解反应网络,在分子炼油水平上进行研究,优化丙烯生成的催化反应动力学(Optimized catalysis kinetics,简称OCK),为强化基质大孔的重油转化能力,提高活性中心可利用性和可接近性,深化裂解反应,优化催化剂成型效果,开发了OCK催化剂制备技术,研制出了新一代催化裂解(DCC)工艺专用催化剂DMMC-1。与目前综合性能最好的DCC催化剂相比,DMMC-1具有大孔结构、高比表面积、高平衡活性等特点。实验室评价结果表明,采用DMMC-1催化剂,使丙烯收率增加2.25百分点,丙烯选择性提高13.8%,汽油质量变好,重油裂化能力提高,焦炭选择性得到改善。

Based on the detailed analysis in the complex deep catalytic catalyst（DCC） reaction network,the development of oil refining at the molecular level and the optimized catalysis kinetics（OCK in brief）,an innovative catalyst technology had been developed for enhancing the heavy oil deep-cracking ability and optimizing the availability of the active sites.With such a technology,DMMC-1 of a new catalyst generation had been designed and developed for the DCC process.Comparing with the best catalyst used in industry now,DMMC-1 had the features of macropore structure,higher surface area and higher activity.The laboratory evaluation test results showed that with DMMC-1 the propylene yield increased by 2.25 percent and the propylene selectivity increased by 13.8%.The catalyst of DMMC-1 had improved its ability for heavy oil cracking and coke selectivity along with reduction of olefin content in gasoline to achieve a better product distribution and improve the product quality.