Tetralin Hydrocracking Reaction Network to Single-Ring Aromatics on Bifunctional Catalysts  

作　　者：Ju Xueyan Huang Zhen Zhang Rui Wang Lixin Hu zhihai Li Dadong 

机构地区：[1]SINOPEC Research Institute of Petroleum Processing,Beijing 100083

出　　处：《China Petroleum Processing & Petrochemical Technology》2022年第2期14-22,共9页中国炼油与石油化工（英文版）

基　　金：This work was financially supported by the SINOPEC Science and technology Development Funds(No.12005-1);the Hydrogenation Process and Hydrogenation Catalyst Laboratory(RIPP,SINOPEC).

摘　　要：Conversion of LCO(light cycle oil)to BTX(benzene,toluene,and xylene)is an economically valuable method for refineries.However,this approach still faces difficulties as the main reactions are not clearly understood.Here we study the detailed hydrocracking pathway of typical reactants,1-methylnaphthalene and tetralin,through molecular simulations and experiments to improve our understanding of the conversion process of LCO to BTX.Molecular simulations demonstrate that the rate-determining step is the isomerization pathway of six-membered ring to five-membered ring in tetralin as its activation energy(ΔEa)is the highest among all the reactions and the order ofΔEa of reactions is isomerization>ring-opening≈side-chain cleavage.The results of experiments show that with the increase in reaction depth,i.e.,through a high temperature(350-370℃)and low LHSV(4.5-6.0 h^(−1)),isomerization,ring-opening,and side-chain cleavage reactions occurred,thus improving the selectivity and yield of alkyl aromatics.

关 键 词：TETRALIN HYDROCRACKING NETWORK single-ring AROMATICS 

分 类 号：TE624.9[石油与天然气工程—油气加工工程]