کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1196646 1492960 2016 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mechanisms of biomass pyrolysis studied by combining a fixed bed reactor with advanced gas analysis
ترجمه فارسی عنوان
مکانیسم های پیرولیز زیست توده با ترکیب یک راکتور ثابت با تجزیه و تحلیل گاز پیشرفته مورد مطالعه قرار گرفت
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی


• Fixed bed reactor is combined with various analysis for gas and tar.
• Design of the fixed bed is suitable for the determination of mass balances.
• Primary vapors are analysed on-line by soft photoionisation mass spectrometry.
• Condensed vapors are quantified by heart-cutting GC*GC/MS-FID.
• Mechanisms of biomass pyrolysis are studied.

Slow pyrolysis of different biomasses (miscanthus, douglas fir and oak) was conducted in a U-shape fixed bed reactor combined to (1) on-line analysis of the vapors (primary tar) by soft photoionisation mass spectrometry (single photoionisation time-of-flight mass spectrometer, SPI-TOFMS), (2) quantitative off-line analysis of condensed vapors by GC*GC/MS-FID and (3) permanent gas analysis. The U-shape fixed bed reactor allows controlling external mass transfers, temperature of the bed, quenching char at targeted temperatures and quantifying mass balances. The mass yields in solid, condensable products and gas are studied between 200 °C and 500 °C. The soft on-line photoionisation analysis leads to a more interpretable mass spectra with few fragment ions and gives the evolution of the main markers of volatiles produced in real-time as a function of the temperature. The chemical structure of the markers analyzed on-line by SPI-TOFMS is assigned by GC*GC/FID-MS analysis. The mechanisms of hemicelluloses, cellulose and lignin pyrolysis in the complex network of biomass (including minerals catalytic effect) are discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Analytical and Applied Pyrolysis - Volume 117, January 2016, Pages 334–346
نویسندگان
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