Kinetic study of hydrodesulfurization of coker gas oil in a slurry reactor

doi:10.1007/s11705-013-1323-8

Front Chem Sci Eng

2013, Vol. 7

Issue (2) : 139-144 https://doi.org/10.1007/s11705-013-1323-8

RESEARCH ARTICLE

Kinetic study of hydrodesulfurization of coker gas oil in a slurry reactor

Haiding XIANG, Tiefeng WANG(

)

Beijing Key Laboratory of Green Reaction Engineering and Technology Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

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Abstract

Coker gas oil (CGO) is a poor-quality feedstock for fluidized bed catalytic cracking (FCC) or hydrocracking. The pretreatment of CGO, especially hydrotreating, can significantly improve the product quality and protect the catalyst. In this work, we studied the hydrodesulfurization (HDS) of CGO in a slurry reactor. All the experiments were carried out in an autoclave using a NiMo/Al₂O₃ catalyst at reaction temperature 340°C–400°C, pressure 6–10 MPa, and stirring speed 800 r·min^-1, with hydrogen-to-oil ratio in the range of 500–1500. The effects of the operating parameters on the desulfurization ratio were investigated and discussed. A macro reaction kinetic model was established for the HDS of CGO in the slurry reactor.

Keywords coker gas oil hydrodesulfurization slurry reactor reaction kinetic model

Corresponding Author(s): WANG Tiefeng,Email:wangtf@tsinghua.edu.cn

Issue Date: 05 June 2013

Cite this article:

Haiding XIANG,Tiefeng WANG. Kinetic study of hydrodesulfurization of coker gas oil in a slurry reactor[J]. Front Chem Sci Eng, 2013, 7(2): 139-144.

URL:

https://academic.hep.com.cn/fcse/EN/10.1007/s11705-013-1323-8
https://academic.hep.com.cn/fcse/EN/Y2013/V7/I2/139

Tab.1 Properties of CGO feedstock

Fig.1 Schematic view of the experimental setup
1 Filter; 2 Valve; 3 Reducing union; 4 Mass flow meter; 5 One-way valve;6 Autoclave; 7 Condenser; 8 Gas-liquid separator; 9 Back-pressure valve

Fig.2 Effect of reaction temperature and time on sulfur content

Fig.3 Effect of reaction temperature on rate constant

Fig.4 Linear regression of ln-1/ (ln=ln-/)

Fig.5 Effect of pressure and reaction time on sulfur content

Fig.6 Effect of pressure on rate constant

Fig.7 Linear regression of ln-ln (ln = ln + ln)

Fig.8 Effect of H/O and reaction time on sulfur content

Fig.9 Effect of H/O on rate constant ( = 380°C, = 8 MPa)

Fig.10 Variation of HS concentration during reaction

1	Qu G H, Huang D Z, Liang W J. Role and prospects of delayed coking in China’s petroleum processing(Petroleum Processing Section). Acta Petrolei Sinica , 2005, 12(3): 47–53
2	Yu Z M, Zhang Y M, Fu X G. Current status and prospects of patent protection concerning delayed coking technology in China. Petroleum Processing and Petrochemicals , 2011, 42(12): 90–92 (in Chinese)
3	Shen H P, Liu Z B, Fan Q M. Development of delayed coking technology(Petroleum Processing Section),. Acta Petrolei Sinica 2010, 26(10): 14–18
4	Li D P. Discussion on processing technologies of coker gas oil. Industrial & Science Tribune. , 2010, 9(4): 104–106 (in Chinese)
5	Wisdom L I. A cost-effective solution for pretreating FCC feedstocks. World Refining , 1999, 9(3): 74–77
6	Chen G, Hu Z H. Summary on production technology of 1.4Mt/a hydrocracking plant processing coker gas oil. Qilu Petrochemical Technology , 2006, 24(2): 114–118 (in Chinese)
7	Marroquìn G, Ancheyta J, Esteban C. A batch reactor study to determine effectiveness factors of commercial HDS catalyst. Catalysis Today , 2005, 104(1): 70–75 doi: 10.1016/j.cattod.2005.03.026
8	Han C R. Hydrocracking technology and engineering. Beijing: China Petrochemical Press, 2001: 437–458
9	Li D D. Hydrotreating process and engineering. Beijing: China Petrochemical Press, 2004: 793-804
10	Wen P, Shi B, Wang J Q, Cao J, Que G H. Slurry-bed hydrocracking of coking VGO. Journal of China University of Petroleum (Edition of Natural Science) , 2008, 32(2): 135–137
11	Mohan S R, Vicente S, Jorge A. J.A.I. D. A review of recent advances on process technologies for upgrading of heavy oils and residua. Fuel , 2007, 86(9): 1216–1231 doi: 10.1016/j.fuel.2006.08.004
12	Babich I V, Moulijn J A. Science and technology of novel processes for deep desulfurization of oil refinery streams: a review. Fuel , 2003, 82(6): 607–631 doi: 10.1016/S0016-2361(02)00324-1
13	Zhang F P, Hu Z H, Dong J W, Li D D. Study on the macro kinetic model of VGO hydrodesulfurization. Petroleum Processing and Petrochemicals , 2011, 42(1): 11–14 (in Chinese)
14	Abdulazem M, Antony S, Edward F. Kinetics and Modeling of Petroleum Residues Hydroprocessing. Catalysis Reviews. Science and Engineering , 2010, 52(2): 204–324 doi: 10.1080/01614941003720167
15	Deng Z H, Wang T F, Wang Z W. Hydrodesulfurization of diesel in a slurry reactor. Chemical Engineering Science , 2010, 65(1): 480–486 doi: 10.1016/j.ces.2009.05.046
16	Aoyi O. Maurice. Drag models, solids concentration and velocity distribution in a stirred tank. Powder Technology , 2008, 181(1): 1–8 doi: 10.1016/j.powtec.2007.03.034
17	Erik R, Jorge A, Arnulfo R Q, Gustavo M. Estimation of activation energies during hydrodesulfurization of middle distillates. Fuel , 2007, 86(9): 1247–1253 doi: 10.1016/j.fuel.2006.09.023

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