کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6593645 | 1423545 | 2018 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A comparative study on the sooting tendencies of various 1-alkene fuels in counterflow diffusion flames
ترجمه فارسی عنوان
یک مطالعه تطبیقی در مورد گرایش های گرایش به انواع مختلف سوخت های 1-الکژن در شعله های نفوذ ضد جریان
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Alkenes are important components in transportation fuels, and are known to have increased sooting tendencies compared to analogous saturated hydrocarbons with the same carbon number. This work aims to understand the sooting tendencies of various 1-alkenes through experiments and numerical simulations for counterflow diffusion flames. Soot and PAH formation tendencies of 1-alkene fuels, including ethylene (C2H4), propene (C3H6), 1-butene (1-C4H8), 1-pentene (1-C5H10), 1-hexene (1-C6H12) and 1-octene (1-C8H16), were experimentally studied using laser induced-incandescence (LII) and laser-induced fluorescence (LIF) techniques, respectively. From the LII results, 1-C4H8 was found to be the most sooting fuel, followed by C3H6â¯>â¯1-C5H10â¯>â¯1-C6H12â¯>â¯1-C8H16â¯>â¯C2H4. The LIF data with a detection wavelength of 500â¯nm indicated the PAH formation tendencies followed the order of 1-C4H8â¯>â¯1-C5H10 â¼1-C6H12â¯>â¯C3H6â¯>â¯1-C8H16â¯>â¯C2H4, which were different from the order of sooting tendencies. Numerical simulations with a comprehensive chemical kinetic model including PAH growth chemistry for the tested 1-alkene fuels were conducted to elucidate the aromatic formation pathways and rationalize the experimentally observed trends. The numerical results highlighted the importance of intermediate species with odd carbon numbers in aromatic species formation, such as propargyl, allyl, cyclopentadienyl and indenyl radicals. Their concentration differences, which could be traced back to the parent fuel molecules through rate of production analysis, rationalize the experimentally observed differences in soot and PAH formation tendencies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Combustion and Flame - Volume 192, June 2018, Pages 71-85
Journal: Combustion and Flame - Volume 192, June 2018, Pages 71-85
نویسندگان
Wang Yu, Sungwoo Park, S. Mani Sarathy, Chung Suk Ho,