Investigation on Dispersed Catalyst for Slurry Bed Hydroprocessing of Heavy Oil  

作　　者：Liu Dong1 Guo Aijun1 Ma Kuiju2 Que Guohe1 (1 State Key Laboratory for Heavy Oil Processing, China University of Petroleum, Dongying 257061 2 CNOOC Oil Base-Oilfield Technology Services Co., Tanggu, Tianjing 300452) 

出　　处：《China Petroleum Processing & Petrochemical Technology》2006年第4期55-59,共5页中国炼油与石油化工（英文版）

摘　　要：The slurry-bed hydrocracking of Karamay VGO with water-soluble dispersed catalyst was studied and the catalyst after being separated from the reaction products was analyzed by using LRS, XRD and XPS to identify the crystal structure of the catalyst. In this paper, the catalytic functions of molybdenum, nickel and iron were studied respectively during the slurry-phase hydrocracking while using diphenylmethane as the model compound and VGO from Karamay crude as the feedstock. The test results showed that, during the slurry-phase hydrocracking of heavy oil, the metal sulfides entered into chemical reactions with the free- radical intermediate H·formed on the catalyst surface. The free-radical intermediate H· formed on the catalyst surface could react with the free-radicals of big molecules and could suppress coke deposition.The slurry-bed hydrocracking of Karamay VGO with water-soluble dispersedcatalyst was studied and the catalyst after being separated from the reaction products was analyzedby using LRS,XRD and XPS to identify the crystal structure of the catalyst.In this paper,thecatalytic functions of molybdenum,nickel and iron were studied respectively during the slurry-phasehydrocracking while using diphenylmethane as the model compound and VGO from Karamay crude as thefeedstock.The test results showed that,during the slurry-phase hydrocracking of heavy oil,the metalsulfides entered into chemical reactions with the free-radical intermediate H centre dot formed onthe catalyst surface.The free-radical intermediate H centre dot formed on the catalyst surface couldreact with the free-radicals of big molecules and could suppress coke deposition.

关 键 词：slurry-bed dispersed HYDROCRACKING 

分 类 号：TE624.4[石油与天然气工程—油气加工工程]