کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4996106 | 1459444 | 2016 | 28 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Combustion performance of Loy Yang lignite treated using microwave irradiation treatment
ترجمه فارسی عنوان
عملکرد احتراق چوب لوی یانگ با استفاده از روش تابش مایکروویو درمان می شود
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کلمات کلیدی
سنگ قیمتی، اشعه مایکروویو، عملکرد احتراق، خصوصیات فیزیکوشیمیایی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
The combustion characteristics and activation energy of the microwave irradiation (MI) treated lignite were investigated by thermogravimetric analysis at different heating rates. Effects of the changes in physicochemical properties (amounts of volatile matter and fixed carbon, specific surface area, and pore volume) on the combustion performance were also discussed. The activation energy was calculated using the Kissinger-Akahira-Sunose isoconversional method. The results showed that ignition temperature of the MI treated samples increased significantly relative to that of raw lignite, and it gradually increased with increasing MI time, indicating that MI treatment decreases the reactivity of lignite, which progressively decreases as MI time increases. The maximum combustion rates of the treated samples were higher than that of raw lignite, suggesting that MI treatment modifies the combustion intensity of Loy Yang lignite. Moreover, the combustion processes of samples treated by MI for 5 and 7Â min were single rate-limiting step kinetics, whereas raw lignite and samples treated by MI for 3 and 9Â min followed multistep kinetics. Average activation energy for sample treated using MI for 5Â min was the maximum value, and it decreased with further increasing MI time because of the increased effect of diffusion.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 642, 20 October 2016, Pages 81-87
Journal: Thermochimica Acta - Volume 642, 20 October 2016, Pages 81-87
نویسندگان
Xiangchun Liu, Taigen Masuyama, Tsuyoshi Hirajima, Moriyasu Nonaka, Keiko Sasaki,