کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7007422 1455175 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Scale-up of the power draw of inline-rotor-stator mixers with high throughput
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Scale-up of the power draw of inline-rotor-stator mixers with high throughput
چکیده انگلیسی
Inline-rotor-stator mixers are widely used in diverse industrial mixing and dispersing processes. Despite their expanded presence in industrial processes, no general accepted method for the scale-up of this machine type has been established so far. This paper reports of a new developed approach to predict flow rate and power consumption within the scale-up of these machines. Based on an earlier published idea, the operating behavior of these machines is characterized by power curves. The approach is further developed, considering an often used procedure for the scale up of stirring processes with non-Newtonian fluids. Additionally, characteristic flow curves are used within the new approach, which allow the prediction of flow rate and power consumption in the scale-up of these machines. The experimental work was done with inline-rotor-stator mixers whose construction design is close to centrifugal pumps. Thus, very high throughputs are generated. Power curves and characteristic flow curves were recorded with polyglycerol-water mixtures. For the validation of the method, a shear thinning model dispersion with pyrogenic nanoparticles was processed in 4 machines of different sizes. The throughput of the machines ranged from 10 to 90 m3/h. These experiments showed that the proposed model enables to predict flow rates and net power consumptions with good accuracy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Research and Design - Volume 93, January 2015, Pages 12-20
نویسندگان
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