مهندسی شیمی ایران

مهندسی شیمی ایران

بهبود پایداری در تولید سیمان از راه بازیابی حرارت تلف‌شده (مطالعۀ موردی: کارخانۀ سیمان خاش)

نوع مقاله : مقاله پژوهشی

نویسندگان
1 دکتری مهندسی شیمی، دانشگاه سیستان‌وبلوچستان
2 استاد مهندسی شیمی، دانشگاه سیستان‌وبلوچستان
3 دانشیار مهندسی شیمی، دانشگاه سیستان‌وبلوچستان
4 استادیار مهندسی شیمی، دانشگاه سیستان‌وبلوچستان
5 استادیار مهندسی شیمی، واحد ایران‌شهر، دانشگاه آزاد اسلامی، ایران‌شهر، ایران
چکیده
در این مطالعه، بازیافت حرارت از کورۀ دوار سیمان با ظرفیت ۲۶۰۰ تن در روز کارخانۀ سیمان خاش بررسی‌شد. در ابتدا، موازنۀ جرم و انرژی برروی داده‌های عملیاتی کارخانه انجام‌گرفت؛ نتایج نشان‌داد که تقریباً 40 درصد کل انرژی ورودی از راه سوخت، با اتلاف حرارتی هدر می‌رود. این اتلاف انرژی عبارت‌ از گازهای خروجی از پیش‌گرمکن (28/8 درصد)، هوای داغ خروجی از گریت‌کولر (3/6 درصد) و بدنۀ کوره (5 درصد شامل تشعشع به‌همراه جابه‌جایی) است. دو راه‌کار برای بازیابی اتلاف انرژی در فرایند تولید کلینکر بررسی‌شد: (۱) استفاده از گازهای خروجی پیش‌گرم‌کننده و خنک‌کننده از راه سامانۀ بازیابی حرارت اتلافی (WHRS) برای تولید برق، و (۲) بازیابی حرارت از سطح کوره بااستفاده‌از مبدل حرارتی. پیاده‌سازی این راه‌کارها می‌تواند بهره‌وری حرارتی سامانه را از 50/6 درصد به 67/5 درصد افزایش‌دهد که نقش چشم‌گیری در صرفه‌جویی انرژی، کاهش هزینه‌های عملیاتی و پایداری محیط زیستی دارد.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Improving Sustainability in Cement Manufacturing Through Waste Heat Recovery (Case Study: Khash Cement Company)

نویسندگان English

S. Mansouri 1
F. Shahraki 2
J. Sadeghi 3
M. R. Sardashti Birjandi 4
E. Koohestanian 5
1 PhD. in Chemical Engineering, University of Sistan and Baluchestan
2 Professor of Chemical Engineering, University of Sistan and Baluchestan
3 Associate Professor of Chemical Engineering, University of Sistan and Baluchestan
4 Assistant Professor of Chemical Engineering, University of Sistan and Baluchestan
5 Assistant Professor of Chemical Engineering, Iranshahr Branch, Islamic Azad University, Iranshahr, Iran
چکیده English

In this study, the potential for waste heat recovery in the 2600-ton-per-day rotary kiln system of Khash Cement Plant was investigated. A comprehensive mass and energy balance was conducted using operational data. Results indicate that around 40% of the input energy is lost through heat dissipation. The main sources of energy loss are: preheater exhaust gases (28.8%), hot air discharged from the grate cooler (3.6%), and radiation and convection losses from the kiln surface (5%). Two recovery strategies were evaluated: (1) utilizing preheater and cooler exhaust gases through a Waste Heat Recovery System (WHRS) to generate electricity, and (2) recovering heat from the kiln surface using a heat exchanger. Implementing these solutions could increase the thermal efficiency of the system from 50.6% to 67.5%, contributing significantly to energy conservation, operational cost reduction, and environmental sustainability.

کلیدواژه‌ها English

Cement Rotary Kiln
Mass and Energy Balance
Waste Heat Recovery
Energy Efficiency
Sustainability
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