سال انتشار: ۱۳۸۶

محل انتشار: پنجمین کنگره بین المللی مهندسی شیمی

تعداد صفحات: ۱۳

نویسنده(ها):

Moradi – Department of chemical engineering, Faculty of engineering, Razi University, , Kermanshah, Iran
Ahmadpour – Department of chemical engineering, Faculty of engineering, Razi University, , Kermanshah, Iran
Yaripour – Catalysis Research Group, Arak Center of Petrochemical Research & Technology Co., National Petrochemical Company (NPC), Arak, Iran

چکیده:

Thermodynamic analysis of single-step synthesis of dimethyl ether (DME) from syngas over a bi- functional catalyst in a slurry bed reactor have been investigated as a function of temperature (200–۲۴۰ ◦C), Pressure (20-50 bar) and composition of feed ratio (H2/CO: 1–۲). The bi-functional catalyst was prepared by physical mixing of CuO/ZnO/Al2O3 as a methanol synthesis catalyst and H-ZSM-5 as a methanol dehydration catalyst. The three reactions including methanol synthesis from CO and H2, methanol dehydration to dimethyl ether (DME) and water-gas shift reaction were chosen as the independent reactions. Thermodynamic equilibrium constants of these reactions and equilibrium composition of all components were determined from experimental and theoretical calculations. Moreover, the effect of reaction temperature, pressure and H2/CO ratio in feed at equilibrium conditions were predicted by thermodynamic model.