بررسی تجربی و شبیه سازی فرایند دفع دی اکسید کربن از بستر کربن اکتیو با استفاده از روش المان های جزئی

نوع مقاله: پژوهشی

نویسنده

دانشگاه دامغان

چکیده

یکی از مهمترین فرایندهای مورد استفاده در صنایع شیمیایی، فرایند های جذب و دفع سطحی می باشند. در این مقاله ابتدا فرایند دفع دی اکسید کربن را به صورت تجربی بر روی بستری از کربن اکتیو بررسی کرده ایم. در مرحله بعد با استفاده از یک هندسه دو بعدی و با روش عددی المان های جزئی به کمک نرم افزار COMSOL فرایند دفع دی اکسید کربن را از بستری از ذرات کربن اکتیو مدل کرده و اثر برخی از پارامترهای موثر بر فرایند دفع دی اکسید کربن را بررسی کرده ایم. برای مدل سازی بستر کربن اکتیو در این مقاله تغییرات در هر دو فاز ساکن و متحرک در دو حالت پایا و وابسته به زمان بررسی شده است. بر اساس نتایج گزارش شده در این کار، ضریب انتقال جرم برای دی اکسید کربن و فلاکس خروجی دی اکسید کربن از ذرات بستر، جزء مهمترین پارامتر های موثر بر این فرایند هستند.

کلیدواژه‌ها


عنوان مقاله [English]

Experimental investigation and numerical modeling of carbon dioxide desorption from activated carbon vessel by using of finite elements method

نویسنده [English]

  • Hadi Baseri
چکیده [English]

Adsorption and desorption of substances in the surface of adsorbent materials are very important in various chemical industries. In this work, at first, desorption of carbon dioxide on activated carbon fixed bed were examined, then by using of a two dimensional geometry and finite elements method with COMSOL multiphysics software the desorption phenomena were simulated numerically. By using of the proposed numerical model the effects of some effective parameters were studied theoretically. Modeling of activated carbon fixed bed was performed for two fixed and mobile phases in the bed and in stationary and time dependent regimes. Based on the reported results in this work, the mass transfer coefficient and the outlet flux of carbon dioxide from the particles of bed are effective parameters on the desorption phenomenon.

کلیدواژه‌ها [English]

  • carbon dioxide desorption
  • activated carbon fixed bed
  • Numerical simulation
  • finite elements
  • COMSOL multiphysics software
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