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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| Format: | Thesis |
| Language: | English English English |
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2016
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| 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 |
| _version_ | 1825636536173985792 |
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| author | Zakaria, Jamal Hazri |
| author_facet | Zakaria, Jamal Hazri |
| author_sort | Zakaria, Jamal Hazri |
| collection | UTHM |
| 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. |
| first_indexed | 2024-03-05T21:38:16Z |
| format | Thesis |
| id | uthm.eprints-754 |
| institution | Universiti Tun Hussein Onn Malaysia |
| language | English English English |
| last_indexed | 2024-03-05T21:38:16Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | uthm.eprints-7542021-08-30T07:50:28Z http://eprints.uthm.edu.my/754/ Sponge media drying using a swirling fluidized bed dryer 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 NonPeerReviewed text en http://eprints.uthm.edu.my/754/1/24p%20JAMAL%20HAZRI%20ZAKARIA.pdf text en http://eprints.uthm.edu.my/754/2/JAMAL%20HAZRI%20ZAKARIA%20COPYRIGHT%20DECLARATION.pdf text en http://eprints.uthm.edu.my/754/3/JAMAL%20HAZRI%20ZAKARIA%20WATERMARK.pdf Zakaria, Jamal Hazri (2016) Sponge media drying using a swirling fluidized bed dryer. Masters thesis, Universiti Tun Hussein Onn Malaysia. |
| spellingShingle | TP155-156 Chemical engineering Zakaria, Jamal Hazri Sponge media drying using a swirling fluidized bed dryer |
| title | 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_short | Sponge media drying using a swirling fluidized bed dryer |
| title_sort | sponge media drying using a swirling fluidized bed dryer |
| topic | TP155-156 Chemical engineering |
| 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 |
| work_keys_str_mv | AT zakariajamalhazri spongemediadryingusingaswirlingfluidizedbeddryer |