مدل‌سازی راکتور بازیابی در فرایند شکست کاتالیستی بستر سیال

نوع مقاله: مقاله پژوهشی

چکیده

در این تحقیق بر اساس یک مدل جامع ریاضی، راکتور بازیابی فرایند شکست کاتالیستی بستر سیال مدل سازی شد. در این مدل، راکتور بازیابی به دو ناحیه متراکم و رقیق تفکیک شد که در هر ناحیه معادلات جرم و انرژی به صورت همزمان حل می‌شود. سینتیک در نظر گرفته شده که بیانگر واکنش‌های روی داده در راکتور بازیابی است، شامل دو واکنش احتراق کک و دو واکنش احتراق منوکسید کربن از دو مسیر هموژن و هتروژن می‌باشد.با درنظر گرفتن واکنش‌های روی داده در رآکتور بازیابی و با حل همزمان معادلات جرم و انرژی، مدل‌سازی فرایند شکست کاتالیستی بستر سیال در راکتور بازیابی از طریق تهیه کد کامپیوتری آن با استفاده از نرم افزار MATLAB انجام گرفت. سپس در شرایط عملیاتی مختلف، نتایج مدل‌سازی با داده‌های تجربی موجود در مقالات و همچنین داده‌های به‌دست آمده از پایلوت موجود در پژوهشگاه مقایسه شدند. نتایج این مقایسه نشان می‌دهد که مدل‌سازی فرایند این تحقیق، قادر است با دقت بالایی عملکرد سیستم را در شرایط عملیاتی متفاوت پیش‌بینی و تغییرات غلظتی اجزاء مختلف در طول راکتور و همچنین در خروجی راکتور را محاسبه کند

کلیدواژه‌ها


عنوان مقاله [English]

Mathematical Modeling of Regenerator Reactor in Fluidized Catalytic Cracking Process

چکیده [English]

In this study, based on a comprehensive mathematical model, a regenerator reactor in fluidized catalytic cracking unit is modeled. In this model, the regenerator is divided into two sections, namely dense and dilute sections; in each section, mass and energy balance for all components are solved simultaneously. The kinetics of reactions happened in regenerator consists of two reactions for coke combustion and two reactions for combustion of carbon monoxide via homogenous and heterogonous routes. After process modeling and computer programming in MATLAB, the modeling outputs are compared by experimental data presented in the literature as well as experimental data obtained from a pilot plant in our research center. The results show that mathematical modeling can predict system performance in different operating conditions with high accuracy and there is good agreement between the modeling predictions and the experimental data.

کلیدواژه‌ها [English]

  • Regenerator Reactor
  • Modeling
  • Fluidized Catalytic Cracking Process
  • Kinetic
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