支撑我国车用汽油质量持续升级的核心技术开发与技术路线创建

基于在石油炼制技术开发与应用的积累,并保持20多年持续研发,开发出定向调控汽油组成的催化裂化工艺及系列催化剂,首创降烯烃与脱硫先后集成的技术路线,为我国车用汽油质量持续升级提供了最经济的解决方案.提出负氢离子转移对双分子反应选择性调控及反应深度优化的机制与方法,借助于变径流化床催化反应工程技术和专用催化剂,对影响转化率...

DEVELOPMENT OF CORE TECHNOLOGY AND ESTABLISHMENT OF TECHNICAL ROUTE TO SUPPORT CONTINUOUS UPGRADING OF VEHICLE GASOLINE QUALITY IN CHINA

Based on the accumulation in the continuous development and application of petroleum refining technology for more than 20 years, the FCC process and series catalysts for directional control of gasoline composition have been developed, and the technology route of olefin reduction and desulfurization has been integrated successively, which can provide the most economical solution for the continuous upgrading of vehicle gasoline quality in China. The mechanism and method of selective control of bimolecular reaction and optimization of reaction depth by negative hydrogen ion transfer were put forward. By analyzing all factors affecting conversion and type of hydrogen transfer reaction, and basing on the catalytic reaction engineering of variable diameter fluidized bed and special catalysts, a FCC process with directional control of gasoline composition has been developed, which can flexibly adjust gasoline composition. The volume fraction of olefins is reduced to 8.5%, and the iso-alkanes are distributed in the light end of gasoline, which is conducive to the increase of octane number and the decrease of 50% distillation temperature of gasoline. In the process of catalytic cracking, the content of isoalkanes and isoalkenes in gasoline should be increased as much as possible, and the saturation of olefins in gasoline should be reduced as much as possible to reduce the loss of octane number.