Development of Hydrocracking Catalyst to Produce High Quality Clean Middle Distillates

作     者：Zhang Xuejun 1,2 Zhang Zhihua1,2(1. Institute of Daqing Petrochemical Company, Daqing 163714 2. School of Chemistry & Chemical Engineering, University of Petroleum,Dongying 257061) 

作者机构：Inst. of Daqing Petrochem. Company Daqing 163714 China Sch. of Chem. and Chem. Engineering University of Petroleum Dongying 257061 China 

出 版 物：《China Petroleum Processing & Petrochemical Technology》 (中国炼油与石油化工（英文版）)

年 卷 期：2004年第6卷第4期

页      面：19-23页

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

主　　题：hydrocracking Ni-W binary catalyst clean middle distillate WWFC categoryIII specification 

摘      要：A novel hydrocracking Ni-W binary catalyst was tentatively designed and prepared by means ofimpregnation on mixed supports of modified Y zeolite and amorphous aluminosilicate . The structure andproperties of catalyst were extensively characterized by XRD, NH3-TPD, IR and XRF techniques. The perfor-mance of catalyst was evaluated by a 100-ml hydrogenation laboratory test unit with two single-stage fixed-bedreactors connected in series. The characterization results showed that the catalyst has a developed and con-centrated mesopores distribution, suitable acid sites and acid strength distribution, and uniform and highdispersion of metal sites. Under a high conversion rate of 73.8% with the 350℃ feedstock, a 98.1m% of C5+yield and 83.5% of middle distillates selectivity were obtained. The yield of middle distillates boiling between140℃and 370℃ was 68.70m% and its quality could meet the WWFC category III specification. It means thatthis catalyst could be used to produce more high quality clean middle distillates derived from heavy oilhydrocracking. The potential aromatic content of heavy naphtha from 65℃ to 140℃ was 37.5m%. The BMCIvalue of 370℃ tail oil was 6.6. The heavy naphtha and tail oil are premium feedstocks for catalytic reformingand steam cracker units.