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Received October 25, 2010
Accepted December 11, 2010
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Effect of process variables on product yield distribution in thermal catalytic cracking of naphtha to light olefins over Fe/HZSM-5
Faculty of Chemical Engineering, Tarbiat Modares University, P. O. Box 14115-114, Tehran, Iran
towfighi@modares.ac.ir
Korean Journal of Chemical Engineering, June 2011, 28(6), 1351-1358(8), 10.1007/s11814-010-0518-7
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Abstract
The effect of temperature, WHSV and Fe loading over HZSM-5 catalyst in thermal-catalytic cracking (TCC) of naphtha for the production of light olefins has been studied. The response surface defined by three most significant parameters is obtained from Box-Behnken design method and the optimal parameter set is found. The results show that ethylene increases with temperature, while propylene shows an optimum at 650 ℃. Moderate WHSV is favorable for maximum production of light olefins. Addition of Fe to HZSM-5 has a favorable effect on the production of light olefins up to 6% of loading. Excess amount of loading decreases the conversion of naphtha, which leads to a drop in light olefin yields. The yield of light olefins(ethylene and propylene) at 670 ℃, 44 hr^(-1) and 6 wt% Fe has been increased to 5.43 wt% compared to the unmodified HZSM-5 and reaches to 42.47 wt%.
References
Anderson BG, Schumacher RR, van Duren R, Singh AP, van Santen RA, J. Mol. Catal. A-Chem., 181(1-2), 291 (2002)
Shao Q, Wang P, Tian H, Yao R, Sun Y, Long J, J. Catal. Today., 147S, S347 (2009)
Keyvanloo K, Towfighi J, J. Anal. Appl. Pyrol., 88, 140 (2010)
Wei Y, Liu Z, Wang G, Qi Y, Xu L, Xie P, He Y, Stud. Surf. Sci. Catal., 158, 1223 (2005)
Jeong SM, Chae JH, Lee WH, Ind. Eng. Chem. Res., 40(26), 6081 (2001)
Pant KK, Kunzru D, Chem. Eng. J., 87(2), 219 (2002)
Yoshimura Y, Kijima N, Hayakawa T, Murata K, Suzuki K, Mizukami F, Matano K, Konishi T, Oikawa T, Saito M, Shiojima T, Shiozawa K, Wakui K, Sawada G, Sato K, Matsuo S, Yamaoka N, J. Catal. Surveys from Japan., 4, 157 (2000)
Xiaoning W, Zhen Z, Chunming X, Aijun D, Li Z, Guiyuan J, J. Rare Earths., 25, 321 (2007)
Li L, Gao JS, Xu CM, Meng XH, Chem. Eng. J., 116(3), 155 (2006)
Lu JY, Zhao Z, Xu CM, Duan AJ, Zhang P, Catal. Lett., 109(1-2), 65 (2006)
Li XF, Shen BJ, Xu CM, Appl. Catal. A: Gen., 375(2), 222 (2010)
Wakui K, Satoh K, Sawada G, Shiozawa K, Matano K, Suzuki K, Hayakawa T, Yoshimura Y, Murata K, Mizukami F, Catal. Lett., 84(3-4), 259 (2002)
Jiang GY, Zhang L, Zhao Z, Zhou XY, Duan AJ, Xu CM, Gao JS, Appl. Catal. A: Gen., 340(2), 176 (2008)
Keyvanloo K, Towfighi J, Sadrameli SM, Mohamadalizadeh A, J. Anal. Appl. Pyrol., 87, 224 (2010)
Sedighi M, Keyvanloo K, Towfighi J, Korean J. Chem. Eng., 27(4), 1170 (2010)
Shao Q, Wang P, Tian H, Yao R, Sun Y, Long J, J. Catal. Today., 147S, S347 (2009)
Keyvanloo K, Towfighi J, J. Anal. Appl. Pyrol., 88, 140 (2010)
Wei Y, Liu Z, Wang G, Qi Y, Xu L, Xie P, He Y, Stud. Surf. Sci. Catal., 158, 1223 (2005)
Jeong SM, Chae JH, Lee WH, Ind. Eng. Chem. Res., 40(26), 6081 (2001)
Pant KK, Kunzru D, Chem. Eng. J., 87(2), 219 (2002)
Yoshimura Y, Kijima N, Hayakawa T, Murata K, Suzuki K, Mizukami F, Matano K, Konishi T, Oikawa T, Saito M, Shiojima T, Shiozawa K, Wakui K, Sawada G, Sato K, Matsuo S, Yamaoka N, J. Catal. Surveys from Japan., 4, 157 (2000)
Xiaoning W, Zhen Z, Chunming X, Aijun D, Li Z, Guiyuan J, J. Rare Earths., 25, 321 (2007)
Li L, Gao JS, Xu CM, Meng XH, Chem. Eng. J., 116(3), 155 (2006)
Lu JY, Zhao Z, Xu CM, Duan AJ, Zhang P, Catal. Lett., 109(1-2), 65 (2006)
Li XF, Shen BJ, Xu CM, Appl. Catal. A: Gen., 375(2), 222 (2010)
Wakui K, Satoh K, Sawada G, Shiozawa K, Matano K, Suzuki K, Hayakawa T, Yoshimura Y, Murata K, Mizukami F, Catal. Lett., 84(3-4), 259 (2002)
Jiang GY, Zhang L, Zhao Z, Zhou XY, Duan AJ, Xu CM, Gao JS, Appl. Catal. A: Gen., 340(2), 176 (2008)
Keyvanloo K, Towfighi J, Sadrameli SM, Mohamadalizadeh A, J. Anal. Appl. Pyrol., 87, 224 (2010)
Sedighi M, Keyvanloo K, Towfighi J, Korean J. Chem. Eng., 27(4), 1170 (2010)
