Inhibition of Coke Formation in Cracking of 2-Methylpentane on USHY by Addition of Steam

›› 2008, Vol. 16 ›› Issue (5): 726-732.

Inhibition of Coke Formation in Cracking of 2-Methylpentane on USHY by Addition of Steam

赵迎宪, 危凤, 虞影

Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China

收稿日期:2007-09-22 修回日期:2008-07-09 出版日期:2008-10-28 发布日期:2008-10-28
通讯作者: ZHAO Yingxian,E-mail:zyx@nit.net.cn
基金资助:
the National Natural Science Foundation of China (20673099) and Scientific Research Fund of Ningbo City(2006A610065).

Inhibition of Coke Formation in Cracking of 2-Methylpentane on USHY by Addition of Steam

ZHAO Yingxian, WEI Feng, YU Ying

Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China

Received:2007-09-22 Revised:2008-07-09 Online:2008-10-28 Published:2008-10-28
Supported by:
the National Natural Science Foundation of China (20673099) and Scientific Research Fund of Ningbo City(2006A610065).

摘要/Abstract

摘要： The effect of steam dilution on the formation of coke and minor products in 2-methylpenatne cracking on ultra stable HY at 673 K has been studied. The results show that steam dilution suppresses the formation of coke and minor aromatic products, but enhances the H/C atomic ratio of coke and the production of diolefins. This and other evidences suggest that steam dilution enhances the desorption of coke precursors, diolefinic ions and cyclic ions, by inhibiting the further pathological reactions to produce aromatics and polyaromatics. These insights into the chemistry underlying coke formation in hydrocarbon cracking on solid acid catalysts can potentially be applied to the development of additives which inhibit coke formation and control catalyst deactivation. Keywords 2-methylpentane, catalytic cracking, coke formation, steam dilution, inhibition

关键词: 2-methylpentane, catalytic cracking, coke formation, steam dilution, inhibition

Abstract: The effect of steam dilution on the formation of coke and minor products in 2-methylpenatne cracking on ultra stable HY at 673 K has been studied. The results show that steam dilution suppresses the formation of coke and minor aromatic products, but enhances the H/C atomic ratio of coke and the production of diolefins. This and other evidences suggest that steam dilution enhances the desorption of coke precursors, diolefinic ions and cyclic ions, by inhibiting the further pathological reactions to produce aromatics and polyaromatics. These insights into the chemistry underlying coke formation in hydrocarbon cracking on solid acid catalysts can potentially be applied to the development of additives which inhibit coke formation and control catalyst deactivation. Keywords 2-methylpentane, catalytic cracking, coke formation, steam dilution, inhibition

Key words: 2-methylpentane, catalytic cracking, coke formation, steam dilution, inhibition

赵迎宪, 危凤, 虞影. Inhibition of Coke Formation in Cracking of 2-Methylpentane on USHY by Addition of Steam[J]. , 2008, 16(5): 726-732.

ZHAO Yingxian, WEI Feng, YU Ying. Inhibition of Coke Formation in Cracking of 2-Methylpentane on USHY by Addition of Steam[J]. , 2008, 16(5): 726-732.

参考文献

1 Marcilla, A., Beltran, M.I., Siurana, A.G., Navano, R., Valdes, F., “A global kinetic model as a tool to reproduce the deactivation behaviour of the HZSM-5 zeolite in the catalytic cracking of low-density polyethylene”, Appl. Catal., 328, 124-131 (2007).
2 Corma, A., Diaz-Cabanas, M.J., Jord , J.L., Martínez, C., Moliner, M., “High-throughput synthesis and catalytic properties of a molecular sieve with 10and 18-rings”, Nature, 443, 842-845 (2006).
3 Caeiro, G., Lopes, J.M., Magnoux, P., Ayrault, P., Riberio, F.R., “A FT-IR study of deactivation phenomena during methylcyclohexane transformation on H-USY zeolite”, J. Catal., 249, 234-243 (2007).
4 Dupain, X., Makkee, M., Moulijn, J.A., “Optimal conditions in fluid catalytic cracking:A mechanistic approach”, Appl. Catal. A Gen., 297, 198-219 (2006).
5 Wang, F., Wang, W.C., Huang, S.P., Teng, J.W., Xie, Z.K., “Experiment and modeling of pure and binary adsorption of n-butane and butene-1 on ZSM-5 zeolite with different Si/Al ratios”, Chin. J. Chem. Eng., 15, 376-386 (2007).
6 Liu, Y., Pinnavaia, T.J., “Aluminosilicate nanoparticles for catalytic hydrocarbon cracking”, J. Am. Chem. Soc., 125, 2376-2377 (2003).
7 Corma, A., Orchillés, A.V., “Current views on the mechanism of catalytic cracking”, Micropous and Mesoporous Materials, 35/36, 21-30 (2000).
8 Kung, H.H., Williams, B.A., Babitz, J.M., Miller, J.T., Haag, W.O., Snurr, R.Q., “Enhanced hydrocarbon cracking activity of Y zeolite”, Topics in Catalysis, 10, 59-64 (2000).
9 Bollas, G.M., Lappas, A.A., Iatridis, D.K., Vasalos, I.A., “Five-lump kinetic model with selective catalyst deactivation for the prediction of the product selectivity in the fluid catalytic cracking process”, Catal. Today, 127, 31-43 (2007) .
10 Corma, A., Melo, F.V., Sauvanaud, L., “Kinetic and decay cracking model for a MicroDower unit”, Appl. Catal. A:General, 287, 34-46 (2005).
11 Quintana-Solórzano, R., Thybaut, J.W., Marin, G.B., L deng R., Holmen, A., “Single-event microkinetics for coke formation in catalytic cracking”, Catal. Today, 122, 362-373 (2005).
12 Moustafa, T.M., Froment, G.F., “Kinetic modeling of coke formation and deactivation in the catalytic cracking of vacuum gas oil”, Ind. Eng. Chem. Res., 42, 14-15 (2003).
13 den Hollander, M.A., Makkee, M.,Moulijn, J.A., “Development of a kinetic model for FCC valid from ultra-short residence time”, Stud. Surf. Sci. Catal., 139, 197-204 (2001).
14 Zhao, Y.X., Bamwenda, G.R., Groten, W.A., Wojciechowski, B.W., “The chain mechanism in catalytic cracking”, J. Catal., 140, 243-261 (1993).
15 Zhao, Y.X., Bamwenda, G.R., Wojciechowski, B.W., “Cracking selectivity patterns in the presence of chain mechanisms”, J. Catal., 142, 465-489 (1993).
16 Zhao, Y.X., Wojciechowski, B.W., “Effect of dilution on 2-methylpentane cracking over HY zeolite”, J. Catal., 142, 499-511 (1993).
17 Zhao, Y.X., Wojciechowski, B.W., “The varying effects of N₂ , H₂ , CO₂ , and CO as diluents in 2-methylpentane cracking over HY”, J.Catal., 144, 377-394(1993).
18 Zholobenko, V.L., Kustov, L.M., Kazansky, V.B., “On the possible nature of sites responsible for the enhancement of cracking activity of HZSM-5 zeolites dealuminated under mild steaming conditions”, Zeolite, 10, 304-306 (1990).
19 Luk'yanov, D.B., “The role of enhanced activity sites in hexane cracking over ZSM-5 zeolites”, Zeolite, 11, 325-328 (1991).
20 Young, L.B., Skilman, N.J., “Extending isomerization catalyst life by treating phosphorous and/or steam”, U.S. Pat., 4423266(1983).
21 ARCO Chemical Technology, “Production of olefins”, European Pat., 0511013 A2 (1992).
22 Wojciechowski, B.W., “The kinetic foundations and the practical application of time-on-stream theory of catalyst decay”, Catal. Rev. Sci. Eng., 9, 79-113 (1974).

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Inhibition of Coke Formation in Cracking of 2-Methylpentane on USHY by Addition of Steam

Inhibition of Coke Formation in Cracking of 2-Methylpentane on USHY by Addition of Steam

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