دانلود مقاله Modelling of a Catalyst Pellet with NonدرUniform Activity Distribution in FischerدرTropsch Synthesis با word دارای 7 صفحه می باشد و دارای تنظیمات در microsoft word می باشد و آماده پرینت یا چاپ است
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توجه : در صورت مشاهده بهم ریختگی احتمالی در متون زیر ،دلیل ان کپی کردن این مطالب از داخل فایل ورد می باشد و در فایل اصلی دانلود مقاله Modelling of a Catalyst Pellet with NonدرUniform Activity Distribution in FischerدرTropsch Synthesis با word،به هیچ وجه بهم ریختگی وجود ندارد
سال انتشار: 1388
محل انتشار: ششمین کنگره بین المللی مهندسی شیمی
تعداد صفحات: 7
چکیده:
Modeling of a catalyst pellet for Fischer-Tropsch Synthesis (FTS) was studied in this work. Under FTS conditions the pores of catalyst pellet are filled with liquid hydrocarbons leading to transport restrictions through the pellet. On the other hand, the active materials used as catalysts are often expensive metals dispersed on large-surface area supports in order to be utilized effectively. To overcome these problems and to improve catalyst performance parameters such as the yield of C5 +, modeling of catalyst in various types of non-uniform activity distributions were considered. These include general non-uniform catalysts (egg-shell, egg-yolk, and egg-white), Dirac-, and layered catalysts (surface-layered, center-layered, and mid-layered). The models were solved by OCFE (Orthogonal Collocation on Finite Elements) method in non-isothermal conditions. Moreover, a parametric sensitivity analysis has been carried out to compare the effects of various non-uniform distribution functions, different pellet sizes, feed composition, temperature and pressure on the performance of the catalyst.