کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10145521 1646362 2019 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of chemical additives on hard deposit formation and ash composition in a commercial circulating fluidized bed boiler firing Korean solid recycled fuel
ترجمه فارسی عنوان
اثر افزودنی های شیمیایی در شکل گیری رسوب سخت و ترکیب خاکستر در یک دیگ بخار کوره در معرض انتشار سوخت جامد جامد کره ای
کلمات کلیدی
افزودنی های شیمیایی، سپرده سخت، سوخت جامد بازیافت شده، احتراق تخت مایع،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
Combustion of SRF (solid recycled fuel) and biomass with potassium (K), sodium (Na), and chlorine (Cl) contents can result in operational problems such as hard deposit formation and convection pass tube corrosion. Two types of commercially available chemical additives, ammonium sulfate [(NH4)2SO4] and borax solution, were examined to elucidate their effect on hard deposit formation and the particle composition of fly ash on the convection pass of a commercial CFBC (circulating fluidized bed combustion) boiler. The addition of ammonium sulfate/borax solution hindered metal chloride formation and reduced the amount of hard deposit formation on the convection pass tubes. Both the alkali and potassium chloride content and the point load hardness of the hard deposit were reduced, while the melting temperature increased according to the borax solution use. When chemical additives were employed, the particle size distribution of the fly ash shifted to coarse particles. In particular, SEM (scanning electron microscopy) images of the fly ash particles revealed the attachments of fine particles to the ash particles. These were assumed to be mineral salts attached to the coarse particles, which increased the overall particle size distribution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 236, 15 January 2019, Pages 792-802
نویسندگان
, , , , , , , ,