کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9636467 | 465855 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental study on mixing and precipitation in a fluidized bed reactor
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Visualization experiments using an acid-base decolourization technique with phenolphthalein as indicator are performed in order to investigate the influence of operating parameters and feed tube position on the mixing efficiency of reacting fluids in the absence and presence of the fluidized solid phase composed of glass micro balls of different diameters. The precipitation of calcium carbonate as calcite is then experimentally investigated in the same cylindrical fluidized bed reactor where nucleation, crystal growth and agglomeration take place simultaneously. In all experiment narrow particle size distributions are obtained. An increase of fluid velocity increases the agglomerate particle size principally due to the intensification of the agglomeration process. At the same time, the carryover particle size is increased. The maximum capacity of the fluidized bed reactor is experimentally obtained at the intersection of agglomerate and carryover particle size variations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Powder Technology - Volume 157, Issues 1â3, 29 September 2005, Pages 163-167
Journal: Powder Technology - Volume 157, Issues 1â3, 29 September 2005, Pages 163-167
نویسندگان
Jawhar Sellami, Imed Ataallah, Hervé Muhr, Edouard Plasari,