Sponge media drying using a swirling fluidized bed dryer

Surface preparation today has seen the introduction of sponge media as an alternative product against the traditionally used abrasive materials. Being soft and elastic, the sponge media reduces air borne emission significantly during surface preparation with capability to be re-used. However the env...

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Main Author:	Zakaria, Jamal Hazri
Format:	Thesis
Language:	English English English
Published:	2016
Subjects:	TP155-156 Chemical engineering
Online Access:	http://eprints.uthm.edu.my/754/1/24p%20JAMAL%20HAZRI%20ZAKARIA.pdf http://eprints.uthm.edu.my/754/2/JAMAL%20HAZRI%20ZAKARIA%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/754/3/JAMAL%20HAZRI%20ZAKARIA%20WATERMARK.pdf
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spelling	my-uthm-ep.7542021-08-30T07:50:28Z Sponge media drying using a swirling fluidized bed dryer 2016-05 Zakaria, Jamal Hazri TP155-156 Chemical engineering Surface preparation today has seen the introduction of sponge media as an alternative product against the traditionally used abrasive materials. Being soft and elastic, the sponge media reduces air borne emission significantly during surface preparation with capability to be re-used. However the environmental conditions limit the sponge media usage whereby wet surroundings prohibit the re-use of the sponge without being dried properly. This study proposes the swirling fluidized bed dryer as a novel drying technique for sponge media. Batch experiments were conducted to study the bed’s hydrodynamics followed by drying studies for three bed loadings of 0.5 kg, 0.75 kg and 1.0 kg at three drying temperatures of 80°C, 90°C and 100°C. It was found that, minimum fluidization velocities for the wet sponge particles were found to be 1.342, 1.361 and 1.382 m/s with minimum swirling velocities of 1.400, 1.469 and 1.526 m/s. Drying times were recorded between 6 to 16 minutes depending on bed loading and drying temperature. Smaller bed weights exhibits faster drying with constant-rate drying period while higher drying temperature and larger bed load resulted in falling-rate drying period. Thin layer modelling for the falling-rate region indicates that Verma et. al model provides the best fit for the present experimental data with coefficient of determination, R2 = 0.98773, root mean square error, RMSE = 0.05048, residuals = 0.3442 and reduced chi-square, χ2 = 0.00254. The effective diffusivity, Deff, for 0.5 kg bed load was found to be 3.454 x 10-9 m2/s and 1.751 x 10-9 m2/s for 0.75 kg bed load. In conclusion, SFBD was found to be a viable and efficient method in drying of sponge media for various industrial applications particularly surface preparation. 2016-05 Thesis http://eprints.uthm.edu.my/754/ http://eprints.uthm.edu.my/754/1/24p%20JAMAL%20HAZRI%20ZAKARIA.pdf text en public http://eprints.uthm.edu.my/754/2/JAMAL%20HAZRI%20ZAKARIA%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/754/3/JAMAL%20HAZRI%20ZAKARIA%20WATERMARK.pdf text en validuser mphil masters Universiti Tun Hussein Onn Malaysia Faculty of Mechanical and Manufacturing Engineering
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English English
topic	TP155-156 Chemical engineering
spellingShingle	TP155-156 Chemical engineering Zakaria, Jamal Hazri Sponge media drying using a swirling fluidized bed dryer
description	Surface preparation today has seen the introduction of sponge media as an alternative product against the traditionally used abrasive materials. Being soft and elastic, the sponge media reduces air borne emission significantly during surface preparation with capability to be re-used. However the environmental conditions limit the sponge media usage whereby wet surroundings prohibit the re-use of the sponge without being dried properly. This study proposes the swirling fluidized bed dryer as a novel drying technique for sponge media. Batch experiments were conducted to study the bed’s hydrodynamics followed by drying studies for three bed loadings of 0.5 kg, 0.75 kg and 1.0 kg at three drying temperatures of 80°C, 90°C and 100°C. It was found that, minimum fluidization velocities for the wet sponge particles were found to be 1.342, 1.361 and 1.382 m/s with minimum swirling velocities of 1.400, 1.469 and 1.526 m/s. Drying times were recorded between 6 to 16 minutes depending on bed loading and drying temperature. Smaller bed weights exhibits faster drying with constant-rate drying period while higher drying temperature and larger bed load resulted in falling-rate drying period. Thin layer modelling for the falling-rate region indicates that Verma et. al model provides the best fit for the present experimental data with coefficient of determination, R2 = 0.98773, root mean square error, RMSE = 0.05048, residuals = 0.3442 and reduced chi-square, χ2 = 0.00254. The effective diffusivity, Deff, for 0.5 kg bed load was found to be 3.454 x 10-9 m2/s and 1.751 x 10-9 m2/s for 0.75 kg bed load. In conclusion, SFBD was found to be a viable and efficient method in drying of sponge media for various industrial applications particularly surface preparation.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Zakaria, Jamal Hazri
author_facet	Zakaria, Jamal Hazri
author_sort	Zakaria, Jamal Hazri
title	Sponge media drying using a swirling fluidized bed dryer
title_short	Sponge media drying using a swirling fluidized bed dryer
title_full	Sponge media drying using a swirling fluidized bed dryer
title_fullStr	Sponge media drying using a swirling fluidized bed dryer
title_full_unstemmed	Sponge media drying using a swirling fluidized bed dryer
title_sort	sponge media drying using a swirling fluidized bed dryer
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Faculty of Mechanical and Manufacturing Engineering
publishDate	2016
url	http://eprints.uthm.edu.my/754/1/24p%20JAMAL%20HAZRI%20ZAKARIA.pdf http://eprints.uthm.edu.my/754/2/JAMAL%20HAZRI%20ZAKARIA%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/754/3/JAMAL%20HAZRI%20ZAKARIA%20WATERMARK.pdf
_version_	1747830674820169728

Sponge media drying using a swirling fluidized bed dryer

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