Please use this identifier to cite or link to this item: https://doi.org/10.1080/07373937.2010.526732
Title: Mathematical modeling of agitated thin-film dryer
Authors: Pawar, S.B.
Patil, R.
Mujumdar, A.S. 
Thorat, B.N.
Keywords: Modeling of dryer
Penetration theory
Scraped surface
Thin-film evaporation
Vacuum contact drying
Issue Date: May-2011
Source: Pawar, S.B., Patil, R., Mujumdar, A.S., Thorat, B.N. (2011-05). Mathematical modeling of agitated thin-film dryer. Drying Technology 29 (6) : 719-728. ScholarBank@NUS Repository. https://doi.org/10.1080/07373937.2010.526732
Abstract: Agitated thin-film dryers (ATFDs) are used to produce dry free-flowing powder from slurry/solution-type feed and widely implemented in pharmaceutical, chemical, and food industries. The feed passes through the ATFD in several forms such as solution/slurry and successively becomes paste, wet powder, and dry powder. The flow of feed in the ATFD undergoes a helical path (combination of rotational velocity imparted by the agitator/blade and axial velocity of feed) while flowing through the annular part of the dryer. The ATFD is described stage-wise and the parameters such as physical properties, scraped surface heat transfer coefficient, and evaporation rate (drying rate) are derived using stepwise model equations. The penetration theory is modeled to obtain the scraped-side heat transfer coefficient. The model equations were solved using MATLAB 7 (MathWorks Inc., Natick, MA) and the simulated drying rate was consequently validated with the experimental values. © 2011 Taylor & Francis Group, LLC.
Source Title: Drying Technology
URI: http://scholarbank.nus.edu.sg/handle/10635/60686
ISSN: 07373937
DOI: 10.1080/07373937.2010.526732
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