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Numerical and experimental characterization of the hydrodynamics and drying kinetics of a barbotine slurry spray

Sebastia Saez, Juan Daniel, Hernandez, Leonor, Arellano-Garcia, Harvey and Julia, Jose Enrique (2019) Numerical and experimental characterization of the hydrodynamics and drying kinetics of a barbotine slurry spray Chemical Engineering Science, 195. pp. 83-94.

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Spray drying is a basic unit operation in several process industries such as food, pharmaceutical, ceramic, and others. In this work, a Eulerian-Lagrangian three-phase simulation is presented to study the drying process of barbotine slurry droplets for the production of ceramic tiles. To this end, the simulated velocity field produced by a spray nozzle located at the Institute of Ceramic Technology in Castelló (Spain) is benchmarked against measurements obtained by means of laser Doppler anemometry in order to validate the numerical model. Also, the droplet size distribution generated by the nozzle is obtained at operating conditions by means of laser diffraction and the data obtained are compared qualitatively to those found in the literature. The droplet size distribution is introduced thereafter in the three-phase simulation to analyse the drying kinetics of individual droplets. The model predicts the theoretical linear evolution of the square diameter (D2-law), and the temperature and mass exchange with the environment. The proposed model is intended to support the design and optimization of industrial spray dryers.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :
Sebastia Saez, Juan
Hernandez, Leonor
Julia, Jose Enrique
Date : 23 February 2019
DOI : 10.1016/j.ces.2018.11.040
Copyright Disclaimer : © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Uncontrolled Keywords : Spray drying; Multiphase drop; CFD; Laser Doppler anemometry; Ceramic powder
Depositing User : Melanie Hughes
Date Deposited : 20 Nov 2018 16:42
Last Modified : 21 Nov 2019 02:08

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