反应时间对重油悬浮床加氢裂化反应的影响  

Effect of Reaction Time on Slurry-Bed Hydrocracking for Heavy Oils

作　　者：崔敏 韩亚鹏[2,3] 杨腾飞[2] 邓文安 李传[2] CUI Min;HAN Yapeng;YANG Tengfei;DENG Wenan;LI Chuan(College of Science,China University of Petroleum,Qingdao 266580,China;State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Qingdao 266580,China;Wuhan BOE Optoelectronics Technology Co.Ltd.,Wuhan 430040,China)

机构地区：[1]中国石油大学(华东)理学院,山东青岛266580 [2]中国石油大学(华东)重质油国家重点实验室,山东青岛266580 [3]武汉京东方光电科技有限公司,湖北武汉430040

出　　处：《石油学报（石油加工）》2020年第4期823-831,共9页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学青年基金项目(21106186);山东省自然科学基金面上项目(ZR2017MB026)资助。

摘　　要：以环烷酸钼为催化剂,考察反应时间对委内瑞拉常压渣油悬浮床加氢裂化反应产物和催化剂抑制生焦能力的影响,并采用四组分分析法、SEM、XPS等手段对体系胶体稳定性、焦炭形貌、催化剂表面Mo元素的形态及相对含量进行分析。结果表明:随反应时间的延长,原料转化率和轻油、焦炭产率升高,催化剂抑制生焦能力先提高后降低,其表面加氢活性较强的Mo^4+位较难生成焦炭;体系胶体稳定性、催化剂表面Mo元素相对含量和焦炭产率的变化趋势一致,说明反应时间对重油悬浮床加氢裂化反应的影响主要表现在影响体系胶体稳定性和焦炭覆盖催化剂活性金属的程度。With using atmosphere residue from Merey(MRAR)as feed and molybdenum naphthenate as catalyst,effect of reaction time on the products and the capability of catalyst to inhibit coking reactions during heavy oil slurry-bed hydrocracking were studied.In addition,the colloidal system stability,coke morphology,types and relative content of Mo on catalyst surface were also investigated through four components analysis,SEM and XPS,etc.Experimental results show that,increasing reaction time can improve feed conversion,light oil and coke yields,however,the capability of catalyst to inhibit coking increases in the beginning but then declines.It was found that coke is difficult to form on Mo^4+position where hydrogenation activity is very strong on the catalyst surface.The change direction of system colloidal stability,relative Mo content on catalyst surface and coke yield are consistent.This indicates that the effect of reaction time on heavy oil slurry-bed hydrocracking mainly lies in the degree of influence on the system colloidal stability and the coke covering the catalyst active metals.

关 键 词：反应时间 重油 悬浮床 加氢裂化 反应特征 生焦 活性金属 

分 类 号：TE624[石油与天然气工程—油气加工工程]