支撑我国汽油质量持续升级的核心技术及技术路线开发与应用1.催化裂化汽油烯烃含量控制理论基础与工业实践  

DEVELOPMENT AND APPLICATION OF CORE TECHNOLOGY AND TECHNICAL ROUTE SUPPORTING CONTINUOUS UPGRADING OF GASOLINE QUALITY IN CHINA 1.Theoretical Basis and Industrial Practice of Olefin Content Control in FCC Gasoline

作　　者：许友好[1] 阳文杰 王新[1] Xu Youhao;Yang Wenjie;Wang Xin(SINOPEC Research Institute of Petroleum Processing,Beijing 100083)

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《石油炼制与化工》2022年第9期1-9,共9页Petroleum Processing and Petrochemicals

基　　金：中国石油化工股份有限公司重点科技项目(119030)。

摘　　要：深度降低汽油烯烃含量是我国车用汽油质量升级的关键。基于对双分子裂化反应与双分子氢转移反应协同和竞争规律的深入研究,创造性将这两类反应对汽油烯烃含量和焦炭产率的影响分为:焦炭量可控区、焦炭量过渡区、焦炭量不可控区。据此提出了分区控制汽油烯烃含量的催化裂化工艺开发思路,进而开发出适用于焦炭量可控区的变径流化床催化裂化工艺、适用于焦炭量过渡区的定向调控汽油组成的最佳反应模式催化裂化技术、适用于焦炭量不可控区的超低烯烃汽油的催化裂化技术。特别是在焦炭量不可控区,创造性地引入负氢离子释放剂并优化引入模式,根本性地解决了汽油烯烃含量深度降低与焦炭产率快速提高的关键矛盾,在大幅降低汽油烯烃含量的同时成功控制了焦炭产率增速,为汽油质量升级提供了可靠保障。Deep reduction of the olefins content in gasoline is the key to upgrading gasoline quality in China.Based on the in-depth study of the synergy and competition between bimolecular cracking reaction and hydrogen transfer reaction,the effects of these two kinds of reactions on the decrease of gasoline olefins content and the increase of coke production were divided into three regions,named“coke yield controllable region”,“coke yield transition region”and“coke uncontrollable region”,respectively.Based on this,the development ideal of FCC process for controlling olefins content in gasoline by zones was put forward.Furthermore,the variable-diameter fluidized bed catalytic cracking process suitable for“coke yield controllable zone”,the optimum reaction mode of catalytic cracking process suitable for“coke yield transition zone”,and the catalytic cracking technology suitable for ultra-low olefin gasoline in coke-controlled zone have been developed.Especially in the region where the coke content could not be controlled,the creative introduction of hydrogen negative ion releasing agent and the optimization of the introduction mode have fundamentally solved the key contradiction between deep reduction of olefins content in gasoline and rapid increase of coke yield.The increase rate of coke yield was controlled while the olefin content in gasoline was greatly reduced,which provided a reliable guarantee for upgrading gasoline quality.

关 键 词：车用汽油 催化裂化 烯烃控制 氢转移 异构烷烃 

分 类 号：TE626.21[石油与天然气工程—油气加工工程]