کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6681287 | 1428079 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the influence of different experimental systems on measured heterogeneous gasification kinetics
ترجمه فارسی عنوان
بر اثر سیستم های مختلف تجربی بر روی سینتیک های گازسیون ناهمگن اندازه گیری شده است
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
واکنش بوودور، رژیم های واکنش، تجزیه کننده طیف سنجی، بستر سیال، تخت ثابت، قطره لوله
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
چکیده انگلیسی
The objective of this study was to gain further insight into the characteristic behavior of reaction systems for establishment of intrinsic and effective particle gasification kinetics. A wood-derived char was subjected to the carbon dioxide-containing atmospheres of four different reaction systems: a thermogravimetric analyzer (TGA), a fluidized-bed reactor (FBR), a fixed-bed reactor (FFB) and a drop-tube reactor (DTR). All systems contained the same CO2 partial pressure of 800â¯mbar at atmospheric pressure. A temperature span from 700 to 1600â¯Â°C and residence times from 200â¯ms to over 8â¯h were investigated. Reactivities spanning five orders of magnitude were observed. The gasification experiments resulted in the identification of four fundamentally different reaction domains; two were classified as true particle behavior, while the observed reaction rates of the other two domains are mainly dominated by the characteristics of the reaction system applied. The domains were referred to as: chemical control, particle diffusion control, bed diffusion control, and system response control. Within the present work, the occurrence of these reaction domains is discussed in regard to the physical nature of the experiments, and implications towards the measurement of reliable particle kinetics are formulated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Energy - Volume 211, 1 February 2018, Pages 582-589
Journal: Applied Energy - Volume 211, 1 February 2018, Pages 582-589
نویسندگان
P. Stoesser, C. Schneider, T. Kreitzberg, R. Kneer, T. Kolb,