کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8869692 | 1622610 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of heating rates on the products of high-temperature pyrolysis of waste wood pellets and biomass model compounds
ترجمه فارسی عنوان
تأثیر نرخ حرارت در محصولات پیلوریلیس درجه حرارت بالا از گلوله چوب و ترکیبات زیست توده
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
The effect of heating rates ranging from 5â¯Â°Câ¯minâ1 to 350â¯Â°Câ¯minâ1 on the yields of pyrolysis products of wood and its main pseudo-components (cellulose, hemicellulose and lignin) have been investigated at a temperature of 800â¯Â°C in a horizontal fixed bed reactor. Results showed a successive dramatic increase and decrease in gas and liquid yields, respectively, while the yields of solid products showed a gradual decrease as heating rates increased. Increased gas formation and an increasingly aromatic oil/tar support the theory of rapid devolatilization of degradation products with increasing heating rate, leading to extensive cracking of primary pyrolysis vapours. Solid products with coal-like calorific value and large surface areas were obtained. CO became the dominant gas both on a mass and volume basis, at the heating rate of 350â¯Â°Câ¯minâ1 for all samples except xylan, which also produced a significant yield of CO2 (20.3â¯wt% and 25.4â¯vol%) compared to the other samples. Cellulose produced a gas product with highest calorific value of 35â¯MJâ¯kgâ1 at the highest heating rate. Results also indicate that the three main pseudo-components of biomass each exert a different influence on the products of high temperature pyrolysis of woody biomass.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Waste Management - Volume 76, June 2018, Pages 497-506
Journal: Waste Management - Volume 76, June 2018, Pages 497-506
نویسندگان
Chidi E. Efika, Jude A. Onwudili, Paul T. Williams,