Modeling of non-catalytic gas-solid reactions- Multicomponent nonequimolar counterdiffusion of gaseous phase
Publish place: 5th International Congress on Chemical Engineering
Publish Year: 1386
نوع سند: مقاله کنفرانسی
زبان: English
View: 1,880
This Paper With 12 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
ICHEC05_466
تاریخ نمایه سازی: 7 بهمن 1386
Abstract:
The mathematical modeling of non-catalytic gas-solid reactions was carried out based on the grain model in terms of nonequimolar counterdiffusion of gaseous phase in the solid matrix. By justifying the model parameters, the model can be used for the reactions involving volume change between gaseous products and gaseous reactants. The model was used to represent the reduction of chromium oxide with methane in the synthesis of chromium carbide. By justifying the diffusion coefficient of reactant methane through the product layer around the grains, the simulation results showed a good fit to experimental data. A MATLAB m-file, developed to simulate the gas-solid reactions in unsteady state condition for the gas phase mass balance, different reaction orders and considering mass transfer resistances in gas phase outside the solid and through the product layer around the grains. Transport equations were solved numerically by using finite volume technique in implicit form. The model also can be used for studying sensitivity analysis for such reactions.
Keywords:
Authors
Khoshandam
Chemical Engineering Group, Engineering Department, Semnan University, Semnan, Iran
Kumar
Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK, CB۲ ۳QZ
Valipour
Mechanical Engineering Group, Engineering Department, Semnan University, Semnan, Iran
Darzi
Chemical Engineering Group, Engineering Department, Semnan University, Semnan, Iran
مراجع و منابع این Paper:
لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :