کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
238261 465749 2010 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Development of a geometric flight unloading model for flighted rotary dryers
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Development of a geometric flight unloading model for flighted rotary dryers
چکیده انگلیسی

Flighted rotary dryers are used extensively in industrial applications for the drying of granular materials, and the understanding of the unloading characteristics of the flights within these units is critical to understanding their behaviour. This paper presents the development of a geometrical derived model for the unloading profile of a generic two-section flight. This model is then validated using experimental data from a flight unloading apparatus. The model is shown to be able to accurately reproduce the observed unloading profiles, however the results are shown to be highly sensitive to the material surface angle used in the model. High-speed photography is used to observe the surface of the granular material during unloading and measurements of key properties are made. Observation of these high-speed images shows that the unloading of the flight is discontinuous, and that there are significant fluctuations in the behaviour of the discharging solids.

This paper presents the development of a geometric model for the unloading of a generic two-section flight. This model is validated using experimental data from a flight unloading apparatus. The model accurately reproduces the observed unloading profiles but is sensitive to the material surface angle used. High-speed photography is used to observe the unloading and shows significant fluctuations.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Powder Technology - Volume 198, Issue 3, 25 March 2010, Pages 395–403
نویسندگان
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