کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6656519 1425375 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Destruction of tar during volatile-char interactions at low temperature
ترجمه فارسی عنوان
تخریب تار در طی تعاملات فرار-فرار در دمای پایین
کلمات کلیدی
تعامل با فرار-فرار، تخریب تار، تشکیل کک، پیرولیز، گازسیون، دمای پایین،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
This study aims to investigate the mechanisms of tar destruction during volatile-char interactions at low temperature (400-700 °C). A bio-char was subjected to interactions with biomass volatiles at different temperatures (400-700 °C). The results indicate that tar is converted into gaseous and solid products (coke) during volatile-char interactions and the proportion of coke formed on the bio-char from the total converted tar steadily increases with increasing temperature. The non-aromatic structures (e.g. aliphatic and/or O-containing structures) in tar are mainly converted into gases by catalytic cracking and/or reforming reactions on char, while the aromatic structures in tar primarily go through condensation/polymerisation reactions to form coke on char surface. The UV-fluorescence spectroscopic results imply that the non-aromatic structures in tar are easier converted on char than aromatic structures at low temperature (e.g. 400-500 °C) and the conversion of aromatic structures through coke formation on char will be enhanced at higher temperature (e.g. 600-700 °C). The Raman spectroscopic results show that some O-containing species in tar molecules are transferred to the char and form additional O-containing structures into the entire char matrix during the volatile-char interactions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel Processing Technology - Volume 171, March 2018, Pages 215-222
نویسندگان
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