نوع مقاله : مقاله پژوهشی
1 دکتری،مهندسی شیمی، دانشگاه تربیت مدرس
2 دانشیار، مهندسی شیمی، دانشگاه تربیت مدرس،
عنوان مقاله [English]
In this paper, the reactions of thermal cracking of ethane for light olefins production have been investigated thermodynamically. The process of thermal cracking of ethane has been evaluated by investigating the dependency of Gibbs free energy to the temperature. In order to model this process, Gibbs free energy minimization method has been used. Effects of steam to ethane ratio in feed stream and reaction temperature on the ligh olefins yield and product distribution have been investigated. Results showed that with increasing steam to ethane ratio, the light olefins yields decreased. Furthermore, light olefins variation in the investigated temperature range has a volcano shaped trend and the highest olefins yield can be obtained at 950K (27wt%). As temperature was increased, the ethylene production increased. On the other hand, propylene yield increased at first and then decreased for higher temperatures. Hydrogen selectivity increased with enhancement of steam content in the feed stream, which can be ascribed to ethane reforming reaction.