کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6475706 1424975 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The comparative and combined effects of hydrogen addition on the laminar burning velocities of methane and its blends with ethane and propane
ترجمه فارسی عنوان
اثرات تطبیقی ​​و ترکیب افزودنی هیدروژن بر سرعت سوختگی ورقه های متان و ترکیبات آن با اتان و پروپان
کلمات کلیدی
سرعت سوزش لامینار، هیدروژن، متان، اتان، پروپان، تقویت شعله،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


- Enhancement of laminar burning velocities of methane/ethane/propane as a result of H2 addition.
- Hydrogen promotes SL of methane more than of blends of methane with ethane and/or propane.
- Increased reactivity due to hydrogen is a result of increased radical concentrations, in particular H.

Laminar burning velocities of hydrocarbon blends of relevance to natural gas combustion, with addition of 0, 10, 35 and 50% hydrogen, were measured using the heat flux method. Hydrocarbon blends were methane (80%)/ethane (20%), methane (80%)/propane (20%) and methane (80%)/ethane (10%)/propane (10%), and in addition experiments were performed using pure methane as a fuel. For the first time it was shown experimentally that hydrogen promotes laminar burning velocity of blends with heavier hydrocarbons to a smaller extent than the well-studied effect on methane. Measurements show that enrichment by hydrogen results in 20-40% lower increase in laminar burning velocity for hydrocarbon blends compared to pure methane, depending on stoichiometry. Modeling points at the importance of increasing concentrations of OH, O and H radicals in H2 enriched flames. At lean conditions increase in H atom concentration is of particular importance. The results are rationalized based on asymptotic flame theory analysis.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 189, 1 February 2017, Pages 369-376
نویسندگان
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