Regulating catalyst morphology to boost the stability of Ni–Mo/Al_(2)O_(3) catalyst for ebullated-bed residue hydrotreating  

作　　者：Huihong Zhu Zhiwei Mao Bin Liu Tao Yang Xiang Feng Hao Jin Chong Peng Chaohe Yang Jifeng Wang Xiangchen Fang 

机构地区：[1]Dalian Re search Institute of Petroleum and Petrochemicals,SINOPEC,Dadian,116045,China [2]State Key Lab of Heavy Oil Processing,China University of Petroleum,Qingdao,266580,China [3]State Key Lab of Chemical Engineering,East Chind University of Science and Technologoy,Shanghui,200237,China

出　　处：《Green Energy & Environment》2021年第2期283-290,共8页绿色能源与环境（英文版）

基　　金：supported by Natural Science Foundation of China(21978325);the National Key Technologies Research and Development Program of China(2017YFB0306503);Fundamental Research Funds for the Central Universities(18CX02130A,18CX02014A);Open Project of State Key Laboratory of Chemical Engineering(SKL-Ch E-18C04);Doctoral Start-up Foundation of Liaoning Province(2019-BS054);Program for Liaoning Innovative Talents in University(XLYC1807245);China Postdoctoral Science Foundation(2019M661409);High-level Talent Innovation and Business Project of Dalian(2017RQ085)。

摘　　要：Hydrotreating of vacuum residue by ebullated-bed shows tremendous significance due to more stringent environmental regulations and growing demand for lighter fuels. However, enhancing the catalyst stability still remains as a challenging task. Herein, two Ni–Mo/Al_(2)O_(3) catalysts with distinct morphologies(i.e., spherical and cylindrical) were first designed, and the morphology effect on deactivation was systematically elucidated employing multi-characterizations, such as HRTEM with EDX mapping, electron microprobe analysis, FT-IR, TGA and Raman. It is found that spherical catalyst exhibits superior hydrotreating stability over 1600 h. The carbonaceous deposits on spherical catalyst with less graphite structure are lighter, and the coke weight is also smaller. In addition, the metal deposits uniformly distribute in the spherical catalyst, which is better than the concentrated distribution near the pore mouth for the cylindrical catalyst. Furthermore, the intrinsic reason for the differences was analyzed by the bed expansion experiment. Higher bed expansion rate together with the better mass transfer ability leads to the enhanced performance. This work sheds new light on the design of more efficient industrial hydrotreating catalyst based on morphology effect.

关 键 词：DEACTIVATION Ebullated-bed HYDROTREATING Vacuum residue MORPHOLOGY 

分 类 号：TE624.93[石油与天然气工程—油气加工工程]