分散型环烷酸钴催化剂的制备及其在重油悬浮床加氢裂化中的应用.pdf

石油化工
506
PETROCHEMICAL TECHNOLOGY
2011年第40卷第5期
分散型环烷酸钴催化剂的制备及其
在重油悬浮床加氢裂化中的应用
李传,尚猛,邓文安,阙国和
(中国石油大学(华东)重质油国家重点实验室,山东青岛266555
摘要]采用皂化反应和复分解反应合成了适用于重油悬浮床加氢裂化反应的分散型坏烷酸钴催化剂,并优化了合成条件;通过
光学显微镜、激光粒度仪、XRD和SEM方法对硫化后的催化剂进行了表征;通过釜式反应评价了该催化剂在委内瑞拉380号燃料
油悬浮床加裂化反应中的性能。实验结果表明,合成分散型环烷酸钴催化剂的优化条件为:在皂化反应中,NaOH质量分数
15%,环烷酸与NaOH摩尔比1:0.995,皂化温度95℃,皂化时问3h;在复分解反应中,CoSO4溶液质量分数15%,以滴加方式加
人CoSO4溶液,复分解反应温度90℃,复分解反应时间2h。该催化剂硫化后颗粒分散度较大,团聚不明显,表面粗糙,有较大的
比表面积,主要以立方晶系CoSs晶型存在,并对重油悬浮床加氢裂化反应有较好的抑焦效果。
关键词1分散型环烷酸钴催化剂;重油;悬浮床加氢裂化;抑制结焦
文章编号]1000-8144(2011)05-0506-05
[中图分类号]TQ426[文献标识码A
Preparation of Dispersive Cobalt Naphthenate Catalyst and Its Application in
Suspended-bed Hydrocracking of Heavy Oil
Li Chuan, Shang Meng, Deng Wenan, Que Guohe
State Key Laboratory of Heavy Oil, China University of Petroleum(Huadong), Qingdao Shandong 266555, China)
Abstract A dispersive cobalt naphthenate catalyst which was used in suspended-bed hydrocracking
of heavy oil was prepared through saponification and double-decomposition, and the catalyst after
sulfurization was characterized by means of optical microscopy, laser scattering particle analyzer, XRD
and SEM. The effect of the catalyst on the suspended-bed hydrocracking of Venezuela 380"fuel oil
was studied in a autoclave. The results showed that the optimal preparation conditions for the dispersive
cobalt naphthenate catalyst were mass content of NAOH 15%o, mole ratio of naphthenic acid to NAOH
1 0 995, saponification emperature 5 saponification time 3 h, mass content of Coso solution
(distributive droplets 15, double-decomposition temperature 90 C and double-decomposition time
2 h. The dispersive cobalt naphthenate catalyst after sulfurization had the advantages of high particle
dispersion, slight particle aggregation, coarse surface and big specific surface area, and the catalyst
particles mainly existed in the form of Co, Ss cubic crystal. And the catalyst showed a good ability of
inhibiting coke formation
Keywords] dispersive cobalt naphehenate catalyst; heavy oil; suspended-bed hydrocracking; coking
inhibition
重油悬浮床加氢裂化工艺可处理高硫、高金床加氢裂化工业装置,预计在2012年第4季度投
属、高残炭和高沥青质的劣质重油,产品轻油收产2。在我国,中国石油大学(华东)开发了一种采
率高,在目前环保法规日严格、石油日益重质化
和劣质化的形势下,是一种优良的重油轻质化加工收稿目期』2010-2-15:.1修改稿日期201-01-30
工艺。在世界范围内,该工艺的技术开发大部分停
作者简介]」李传(1981-),男,江西省星子县人,博士,副教授,电
话18653245509,电邮lichuan_upc(@163.com。联系人:邓文安,电话
留在实验室小试和中试阶段,仅有意大利Eni公司
18605460968,电邮dengwenan0@sina.com。
计划在 Sannazzaro炼油厂建设世界第一套渣油悬浮『基金项目」山东省自然科学基金青年基金项目(ZR2009Q02)