کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6634944 | 461114 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Establishment of kinetic parameters of particle reaction from a well-stirred fluidized bed reactor
ترجمه فارسی عنوان
ایجاد پارامترهای سینتیکی واکنش ذرات از یک راکتور همزیستی به خوبی همزیستی شده است
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
A novel method is presented for experimental study of gas-particle reactions, based on realizing a well-stirred reactor as a small scale fluidized bed. This reactor is evaluated against the drop tube reactor and the thermo-gravimetric analyser. It shows to enable high heat up rates (â¼104 K/s), long timescale observation (up to several hours), operation with small fuel particles (â¼100 μm) and accurate control of reaction conditions. Char reaction rates are established from real-time gas product analysis by FTIR spectroscopy, through a detailed data-analysis procedure. This procedure employs a particle surface-evolution model and accounts for sampling system signal attenuation. The validity of the well-stirred conditions is established, and the method is employed for char combustion and gasification. Highly consistent results for char gasification over a wide range of conditions (T = 800-1100 °C, CCO2 = 19-76%), are used to demonstrate the establishment of kinetic parameters for an n-th order approach. Activation energy and order of reaction are found and compare well with the literature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 158, 15 October 2015, Pages 263-269
Journal: Fuel - Volume 158, 15 October 2015, Pages 263-269
نویسندگان
H.D. Haustein, T. Kreitzberg, B. Gövert, A. Massmeyer, R. Kneer,