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ժҪ ͨ��ʵ��о��ģ��ȴͨ��(�ھ�Ϊ2 mm)�ڵĳ��ٽ��ѽⷴӦ,��ڸ�ѹ(5 MPa)�͸��(560~665 ��)��µ��ѽ��Ｐͣ��ʱ��س̷ֲ��ͨ��C5~C11��ֵĶ��ѽⷴӦ,��Ward��ѽ�PPD��ѧģ�͡�ͨ��ģ��Ԥ��ֵ��ʵ��ֵ�ĶԱ�,��֤��PPD�ѽ�ģ�͵Ŀɿ��ԡ�

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Abstract�� Thermal cracking of supercritical hydrocarbon aviation fuels was conducted in an electrically heated tube(2 mm i.d.), detailed information on the product distributions of thermal cracking of n-octane under supercritical conditions(5 MPa, 560—665 ��) were obtained. And residence times along the tube were reported too. Through a new secondary mechanism of C5—C11, the PPD kinetic model proposed by Ward et al. is modified. The reliability of the modified PPD kinetic model is confirmed by the comparison of model predictions with the experimental values.

Keywords�� n-octane�� high pressure�� supercritical�� microchannel�� thermal cracking kinetics

Received 2013-05-28;

Corresponding Authors: ��,�绰:(022)27892340,E-mail:zhangxiangwen@tju.edu.cn�� Email: zhangxiangwen@tju.edu.cn

About author: ��캣(1986-),��,˶ʿ�о��

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��캣, ��.��ȴ΢ͨ��ڳ��ٽ��ѹ��ѽ��Ĳ��ֲ��ѧ[J]. ��ѧ��ҵ�빤��, 2015,32(2): 37-42,73

Fang Qinghai, Zhang Xiangwen.Thermal Decomposition of n-Octane in Regenerative Cooling Microchannels at Supercritical Conditions: Product Distributions and Kinetics[J]. Chemcial Industry and Engineering, 2015,32(2): 37-42,73

[1]	Lander H R, Nixon A C. Endothermic fuels for high Mach vehicles[J]. ACS Division of Petroleum Chemistry, 1987, 32 (3): 504-511
[2]	Maurice L Q, Lander H, Edwards T. Advanced aviation fuels: A look ahead via a historical perspective[J].Fuel.2001, 80 (5):747-756
[3]	Edwards T. Cracking and deposition behavior of supercritical hydrocarbon aviation fuels[J].Combustion Science and Technology.2006, 178 (1/3):307-334
[4]	Jackson T A, Eklund D R, Fink A J. High speed propulsion: Performance advantage of advanced materials[J].Journal of Materials Science.2004, 39 (19):5-
[5]	Sobel D R, Spadaccini L J. Hydrocarbon fuel cooling technologies for advanced propulsion[J].Journal of Engineering for Gas Turbines and Power.1997, 119 (2):344-351
[6]	Edwards T. Liquid fuels and propellants for aerospace propulsion: 1903—2003[J].Journal of Propulsion and Power.2003, 19 (6):1-
[7]	Petley D H, Jones S C. Thermal management for a Mach 5 cruise aircraft using endothermic fuel[J].Journal of Aircraft.1992, 29 (3):384-389
[8]	Curran E T. Scramjet engines: The first forty 2001s[J].Journal of Propulsion and Power.2001, 17 (6):1-
[9]	Ward T, Ervin J S, Striebich R C, et al. Simulations of flowing Mmildly-cracked normal alkanes incorporating proportional product distributions[J].Journal of Propulsion and Power.2004, 20 (3):394-402
[10]	Liu G, Cao Y, Jiang R, et al. Oxidative desulfurization of jet fuels and its impact on thermal-oxidative stability[J].Energy & Fuels.2009, 23 (12):5-
[11]	Meng F, Liu G, Wang L, et al. Effect of HZSM-5 coating thickness upon catalytic cracking of n-dodecane under supercritical condition[J].Energy & Fuels.2010, 24 (5):2-
[12]	Van Camp C E, Van Damme P S , Froment G F. Thermal cracking of kerosine[J].Industrial & Engineering Chemistry Process Design and Development.1984, 23 (1):155-162
[13]	Yu J, Eser S. Kinetics of supercritical-phase thermal decomposition of C10-C14 normal alkanes and their mixtures[J].Ind Eng Chem Res.1997, 36(3):585-591
[14]	Xing Y, Xie W, Fang W, et al. Kinetics and product distributions for thermal cracking of a kerosene-based aviation fuel[J].Energy & Fuels.2009, 23 (8):4-
[15]	De Witt M J, Broadbelt L J. Binary interactions between tetradecane and 4-(1-naphthylmethyl) bibenzyl during low-and high-pressure pyrolysis[J].Energy & Fuels.1999, 13 (5):969-983
[16]	Stewart J, Brezinsky K, Glassman I. Supercritical pyrolysis of decalin, tetralin, and n-decane at 700—800 KProduct distribution and reaction mechanism[J].. Combustion Science and Technology.1998, 136 (1/6):373-390
[17]	Slayton R M, Aubuchon C M, Camis T L, et al. Desorption kinetics and Adlayer sticking model of n-butane, n-hexane, and n-octane on Al₂O₃ (0001)[J]. The Journal of Physical Chemistry, 1995, 99 (7): 2 151-2 154
[18]	Fletcher A J, Thomas K M. Adsorption and desorption kinetics of n-octane and n-nonane vapors on activated carbon[J].Langmuir.1999, 15 (20):6-