摘要
用吉布斯自由能最小原理法对C2～C5烯烃构成的热力学网络进行了平衡状态的计算,并与1丁烯及混合碳四烃在ZSM5分子筛催化剂上的催化裂解实验结果进行了比较。结果表明:在ZSM5分子筛催化剂上,不管进料是1丁烯还是混合碳四烃,裂解产物中C2～C5烯烃收率随温度的变化趋势同热力学规律一致,即随温度升高乙烯产率不断升高,而丙烯的产率在630～650℃达到最大值。推荐实现最大化丙烯收率的温度范围为630～650℃。
The thermodynamics equilibrium yield of C2-C5 olefins was calculated based on the principle of minimum Gibbs free energy and using C2 C5 olefins as reaction net for the production of propylene and ethylene from C4 olefins cracking. The calculated data was compared with the experimental data obtained by cracking 1 butene or C4 fraction over ZSM-5 zeolite catalyst. Results showed that the experimental data agreed well with the calculated data for both feeds, the ethylene yield increased with the increase of reaction temperature and a maximum propylene yield of 41.7% was observed at 630-650℃ under 0.1 MPa. Therefore, for maximizing propylene yield, a reaction temperature range of 630-650℃ was proposed.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2005年第8期44-48,共5页
Petroleum Processing and Petrochemicals
基金
国家973重点基础研究发展规划项目(2003CB615804)
上海市科委项目(03DJ14004)。
