مهندسی مکانیک مدرس

مهندسی مکانیک مدرس

مطالعه تجربی و بهینه‌سازی عددی پارامترهای هندسی مشعل در کوره‌ پیش گرم خط پرس مجتمع صنعتی فولاد اسفراین

نوع مقاله : پژوهشی اصیل

نویسندگان
1 مجتمع آموزش عالی فنی و مهندسی اسفرایندانشگاه شیان جیائوتنگ چین
2 مجتمع صنعتی فولاد اسفراین
چکیده
در این پژوهش به مطالعه تجربی و مدلسازی پارامترهای هندسی یک مشعل کوره پیش گرم در خط پرس مجتمع صنعتی اسفراین پرداخته شده است. جهت بهبود فرآیند احتراق در مشعل، سه قطر مختلف (10، 20 و 30 میلیمتر) برای نافی و سه طول مختلف (225، 250 و 300 میلیمتر) برای طول اختلاط مشعل در نظر گرفته شده است. برای شبیه سازی از نرم افزار انسیس-فلوئنت و از مدل آشفتگی ε-RNG k استفاده شده است و نتایج مدلسازی نشان می دهد که روش اعمال شده دقت خوبی داشته و حداکثر با 23% خطا مقادیری بیشتر از مقادیر تجربی برای دما نشان می دهد که این اختلاف دما به علت عدم اندازه گیری دقیق دبی هوای ورودی و همچنین اندازه گیری نقطه ای دما در مشعل ایجاد شده است. در بررسی اثر قطر نافی مشاهده شده است که با افزایش قطر نافی از 10 تا 30 میلیمتر، ماکزیمم دمای داخل مشعل 6% افزایش داشته است که در برابر افزایش ناچیز آلاینده اکسیدهای نیتروژن در داخل مشعل، از بین قطر های انتخابی قطر 30 میلیمتر برای طراحی بهینه انتخاب شده است. همچنین نتایج بررسی اثر طول اختلاط بر عملکرد مشعل نشان داده است که با افزایش طول، میزان گرمای تولیدی بطور ناچیزی کاهش پیدا می کند که با توجه به پایداری مطلوب تر آلاینده های اکسید نیتروژن بعلت فضای بیشتر و واکنش کاملتر، طول 300 میلیمتر برای طراحی بهینه انتخاب شده است.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Experimental study and Numerical Optimization for the Burner Geometry Parameters of Preheated Furnace at Esfarayen Steel Industrial Complex

نویسندگان English

Mohammad Hatami 1
Ali Gholipour 2
1 Esfarayen University of TechnologyXi'an Jiaotong University
2 Esfarayen Industrial Complex
چکیده English

In this research, the geometric parameters of a preheated furnace burner in the press line of Esfarayen Industrial Complex have been studied, experimentally and numerically. To improve the combustion process in the burner, three different diameters (10, 20 and 30 mm) are provided for the nozzle diameter and three different lengths (225, 250 and 300 mm) for the mixing length of the burner. Ansys-Fluent software and RNG k-ε turbulence model have been used for the simulation and the modeling results show that the applied method has good accuracy and with a maximum error of 23% higher than the experimental values for temperature. This temperature difference is due to the lack of accurate measurement of inlet air flow and also point measurement of temperature in the burner. In the study of the effect of nozzle diameter, it was observed that by increasing the nozzle diameter from 10 to 30 mm, the maximum temperature inside the burner increased by 6%, which against a slight increase in nitrogen oxides (Nox) pollutants inside the burner, the 30 mm diameter for optimum design is selected among the tested diameters. Also, the results of the study for the effect of mixing length on burner performance have shown that by increasing the length, the amount of heat produced decreases slightly, which due to more favorable stability of NOx pollutants due to more space and complete reaction, length of 300 mm has been chosen for optimal design of burner.

کلیدواژه‌ها English

combustion
Burner
Gas usage
Optimization
Industrial Complex
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