Persian Gulf University Journal of Oil, Gas and Petrochemical Technology 2383-2770 4 Number 1 2017 12 30 Thermodynamic Analysis of Light Olefins Production via Cracking of n-Hexane Using Gibbs Energy Minimization Approach and Analysis of Overall Reactions 18 39 58056 10.22034/jogpt.2017.58056 EN Reza Khoshbin Chemical Engineering Department, Tarbiat Modares University, Jalal Al AhmadHighway,P.O.Box 4155‐4838, Tehran, Iran. Ramin Karimzadeh Chemical Engineering Faculty Tarbiat Modares University Journal Article 2017 09 11 Thermodynamic analysis of the cracking of hexane has been conducted by the Gibbs free energy minimization method and second law analysis of overall reactions. By-products have been divided into three groups of methane, alkynes and aromatics and their possible production paths have been discussed. Effect of operating conditions such as temperature and steam-to-hexane ratio on the cracking performance has been investigated. The principal set of compounds considered in the modelling is hydrogen, water, ethane, ethylene, acetylene, propane, propylene, methyl acetylene, butane, butylene and hexane. Hexane conversion increased with increase of temperature and steam content. As temperature increases, the equilibrium olefin yield shows a volcano-shaped trend. In presence of methane, the maximum olefin yield declined and shifted to lower temperatures. When aromatics were considered in the product list, the light olefins yield is negligible. Equilibrium predicts that adding steam to the feed stream led to decrease of coke deposition through suppressing of aromatization reaction. https://jogpt.pgu.ac.ir/article_58056_2defa0c94e4f29a7ff9d7e4a3afaa6f7.pdf