Building a Kinetic Model for Steam Cracking by the Method of Structure-Oriented Lumping

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• 作者：Lida Tian ; Jiming Wang ; Benxian Shen ; Jichang Liu
• 刊名：Energy & Fuels
• 出版年：2010
• 出版时间：August 19, 2010
• 年：2010
• 卷：24
• 期：8
• 页码：4380-4386
• 全文大小：1000K
• 年卷期：v.24,no.8(August 19, 2010)
• ISSN：1520-5029

文摘

A kinetic model for steam cracking has been developed by representing feedstock molecules and constructing reaction networks with the structure-oriented lumping method, calculating the reaction rate constant with Materials Studio software, and solving kinetic differential equations with a fourth−fifth-order Runge−Kutta algorithm. A total of 7 structure vectors and 74 reaction rules have been designed to describe molecular composition and their reactions. The model can predict product distribution of different light-oil steam-cracking processes at various operating conditions. Simulation results indicated that predicted data agreed well with the experimental results. Relative errors of ethylene and propylene were not more than 8%.