Britton, P.F., Schneider, P.A., and Sheehan, M.E. (2004) Flight unloading in rotary sugar dryers. In: Proceedings fo the 26th Australian Sugar Cane Technologists Conference (26) pp. 1-7. From: 2004 Conference of the Australian Society of Sugar Cane Technologists, 4 - 7 May 2004, Brisbane, QLD, Australia.

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Abstract

The goal of all rotary sugar dryers is to present wet, crystalline sugar to the oncoming air stream, in order to maximise heat and mass transfer between these phases. Flight design plays a critical role in this process. This paper presents a simple analysis of flight discharge, based on geometric considerations and measured material flow properties. Emphasis is placed on the importance of the active or airborne sugar mass, resulting in the ability to investigate the effects of material moisture content and flight geometry on the magnitude of airborne sugar. Material dynamic repose angles for wetted and dry sugar are measured using a rotating drum apparatus. The rotary transport model is applied to a case study dryer configuration in order to determine the percentage of airborne sugar during steady state operation. The effect of sugar moisture content on flight capacity is also investigated, providing insight into geometry requirements for uniform sugar hold up along the length of the case study dryer.

Item ID:	14769
Item Type:	Conference Item (Scholarly Work)
ISBN:	0726-0822
Keywords:	cohesion; discharge; drying; flights; repose angle; rotary transport
Related URLs:	Organisation
Additional Information:	This paper was also published as Britton, P.F., Schneider, P.A., and Sheehan, M.E. (2006) Flight unloading in rotary sugar dryers. International Sugar Journal, 108 (1286). pp. 83-89 and can be found in ResearchOnline at the related URL.
Date Deposited:	03 Sep 2017 22:45
FoR Codes:	09 ENGINEERING > 0915 Interdisciplinary Engineering > 091504 Fluidisation and Fluid Mechanics @ 100%
SEO Codes:	86 MANUFACTURING > 8601 Processed Food Products and Beverages (excl. Dairy Products) > 860199 Processed Food Products and Beverages (excl. Dairy Products) not elsewhere classified @ 100%
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