کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11030254 | 1646362 | 2019 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Deactivation kinetics for lignite gasification in a fluidized bed reactor
ترجمه فارسی عنوان
سینتیک خنثی سازی برای گازسیون لجنیت در یک راکتور بستر سیال
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کلمات کلیدی
سینتیک غیر فعال کردن، گازسیون، الفبای الجزایر، رقیق کننده مایع
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Lignite gasification may be characterized by the active site restriction result from deactivation. As was aimed here, a deactivation model (DM) can be developed by “pseudo-steady-state” mass balance, i.e. describing variation of available surface with time. For this purpose, bench-scale fluidized bed reactor (FBR) was operated for obtaining gasification product profiles. Gas samples were taken from the reactor effluent stream, and fed continuously to the gas analyzers for on-line simultaneous measurements of H2, CO2, CO, CH4 and O2. Data were used for extracting model parameters (k// and kD) from the linear form of DM. Experiments at temperature range of 973-1173â¯K were conducted. Fluidizing mixture (air and steam) entered the bed through a distributor of a 200-mesh stainless steel sieve and fluidized the single charge of lignite with a mean particle diameter approximately 250â¯Âµm. The agreement between the experimental and predicted carbon concentrations was confirmed for DM. The latter may be successfully used to design the fluidized bed combustors or gasifiers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 236, 15 January 2019, Pages 1050-1056
Journal: Fuel - Volume 236, 15 January 2019, Pages 1050-1056
نویسندگان
Tansu Uyar, Yahya Suyadal,