کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10274710 461666 2016 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of mineral components on sintering of ash particles at low temperature fouling conditions
ترجمه فارسی عنوان
اثر اجزای مواد معدنی بر پخت ذرات خاکستر در شرایط فرسایش دمای پایین
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
The ash deposition phenomenon in the coal gasification process is a severe problem for continuous operation. The ash deposition rate is influenced by the behavior of ash particles on the deposit target. Dropped coal ash particles, which exhibit different behaviors on the deposit surface such as attachment, rebounding, and removal, were observed through the view port of a drop tube furnace (DTF). The different behaviors may be influenced by the state of the ash particles such as the sintering phenomenon, which is a function of the mineral content. To verify the mineral components important in sintering among the ash particles, transformation of the particle shape of synthetic ash reacted at 900 °C was analyzed through a scanning electron microscope (SEM). The Fe, Ca, and Mg components were the main factors for sintering and agglomeration. The Fe, Ca, and Mg components sintered with Si and Al were observed in the mineral mapping of deposited coal ash by scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX) analysis. Sintering characteristics of coal ash were analyzed by the dilatometer technique. Sintering temperature, shrinkage, and sintering activation energy (Esin) were all found to be related to the Fe, Ca, and Mg contents.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel Processing Technology - Volume 141, Part 1, January 2016, Pages 82-92
نویسندگان
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