کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6591516 456879 2013 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Granule size distribution for a multi-chamber fluidized-bed melt granulator: Modeling and validation using process measurement data
ترجمه فارسی عنوان
توزیع اندازه گرانول برای یک گرانولاتور ذوب چند لایه سیلیکونی: مدل سازی و اعتبار سنجی با استفاده از داده های اندازه گیری فرایند
کلمات کلیدی
گرانولیت ذوب، تخت مایع صنعتی، معادله تعادل جمعیت، تغذیه،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
In this work, a steady-state model of a multi-chamber fluidized-bed granulator used for urea production is developed and validated. To this aim, mass, energy and population balances are solved for all the fluidized beds. Regarding the population balance equation (PBE), pure coating or the combined mechanisms of coating and elutriation are taken into account. Both PBE formulations are analytically solved and a new solution methodology is proposed to handle inlet solid streams distributed in different size grids and to minimize the solution errors propagation expected when a set of PBEs in series has to be solved. By comparison with experimental data, it is found that the model including coating and elutriation gives a better representation of the particles size distribution with respect to the results found when pure coating is assumed. Besides, the results indicate that the fines are removed almost completely in the first and second chambers, being the amount of fines in the subsequent chambers negligible.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Science - Volume 104, 18 December 2013, Pages 319-329
نویسندگان
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