The successful and economical design, scale up and operation of a fluidized bed reactor depends upon the true prediction of its bed hydrodynamics. The present research has been carried out to study the hydrodynamics behavior of bed of semolina particles in liquid solid fluidization. The prime objective of this research work is to study the effect of liquid superficial velocity and variation in static bed height on the minimum fluidization velocity and pressure drop. Liquid-solid fluidization is characterized by the uniform expansion of bed particles, therefore it is known as particulate fluidization. In liquid solid fluidization, there is no bubbling phase, that is the main cause of uniform bed expansion. Liquid-solid fluidization has extensive field of applications, i.e. in hydrometallurgy, waste water treatment, biochemical processing and food technology. Minimum fluidization velocity and pressure drop are important hydrodynamic parameters in the design and scale up of fluidized bed reactors. The experimental work was carried out in a column made up of acrylic having 60mm outer diameter and 2mm wall thickness and was 1000mm long. Manometers were used to observe the pressure drop variations across the bed. The minimum fluidization velocity was found to be 0.404mm/sec. It has been found that the minimum fluidization velocity is not affected by the variations in the initial static bed height. Semolina particles being sticky solids offer slightly greater pressure drop. Pressure drop becomes constant when fluidization is achieved.
| Published in | American Journal of Science, Engineering and Technology (Volume 1, Issue 2) |
| DOI | 10.11648/j.ajset.20160102.17 |
| Page(s) | 58-62 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2017. Published by Science Publishing Group |
Pressure Drop, Liquid-Solid Fluidization, Minimum Fluidization Velocity, Bed of Semolina Particles
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APA Style
Usman Asghar, Waqar Ali Khan, Imran Shamshad. (2017). Effect of Initial Bed Height and Liquid Velocity on the Minimum Fluidization Velocity (Umf) and Pressure Drop for the Bed of Semolina Particles in Liquid-Solid Fluidization. American Journal of Science, Engineering and Technology, 1(2), 58-62. https://doi.org/10.11648/j.ajset.20160102.17
ACS Style
Usman Asghar; Waqar Ali Khan; Imran Shamshad. Effect of Initial Bed Height and Liquid Velocity on the Minimum Fluidization Velocity (Umf) and Pressure Drop for the Bed of Semolina Particles in Liquid-Solid Fluidization. Am. J. Sci. Eng. Technol. 2017, 1(2), 58-62. doi: 10.11648/j.ajset.20160102.17
AMA Style
Usman Asghar, Waqar Ali Khan, Imran Shamshad. Effect of Initial Bed Height and Liquid Velocity on the Minimum Fluidization Velocity (Umf) and Pressure Drop for the Bed of Semolina Particles in Liquid-Solid Fluidization. Am J Sci Eng Technol. 2017;1(2):58-62. doi: 10.11648/j.ajset.20160102.17
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Download@article{10.11648/j.ajset.20160102.17,
author = {Usman Asghar and Waqar Ali Khan and Imran Shamshad},
title = {Effect of Initial Bed Height and Liquid Velocity on the Minimum Fluidization Velocity (Umf) and Pressure Drop for the Bed of Semolina Particles in Liquid-Solid Fluidization},
journal = {American Journal of Science, Engineering and Technology},
volume = {1},
number = {2},
pages = {58-62},
doi = {10.11648/j.ajset.20160102.17},
url = {https://doi.org/10.11648/j.ajset.20160102.17},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajset.20160102.17},
abstract = {The successful and economical design, scale up and operation of a fluidized bed reactor depends upon the true prediction of its bed hydrodynamics. The present research has been carried out to study the hydrodynamics behavior of bed of semolina particles in liquid solid fluidization. The prime objective of this research work is to study the effect of liquid superficial velocity and variation in static bed height on the minimum fluidization velocity and pressure drop. Liquid-solid fluidization is characterized by the uniform expansion of bed particles, therefore it is known as particulate fluidization. In liquid solid fluidization, there is no bubbling phase, that is the main cause of uniform bed expansion. Liquid-solid fluidization has extensive field of applications, i.e. in hydrometallurgy, waste water treatment, biochemical processing and food technology. Minimum fluidization velocity and pressure drop are important hydrodynamic parameters in the design and scale up of fluidized bed reactors. The experimental work was carried out in a column made up of acrylic having 60mm outer diameter and 2mm wall thickness and was 1000mm long. Manometers were used to observe the pressure drop variations across the bed. The minimum fluidization velocity was found to be 0.404mm/sec. It has been found that the minimum fluidization velocity is not affected by the variations in the initial static bed height. Semolina particles being sticky solids offer slightly greater pressure drop. Pressure drop becomes constant when fluidization is achieved.},
year = {2017}
}
TY - JOUR T1 - Effect of Initial Bed Height and Liquid Velocity on the Minimum Fluidization Velocity (Umf) and Pressure Drop for the Bed of Semolina Particles in Liquid-Solid Fluidization AU - Usman Asghar AU - Waqar Ali Khan AU - Imran Shamshad Y1 - 2017/01/12 PY - 2017 N1 - https://doi.org/10.11648/j.ajset.20160102.17 DO - 10.11648/j.ajset.20160102.17 T2 - American Journal of Science, Engineering and Technology JF - American Journal of Science, Engineering and Technology JO - American Journal of Science, Engineering and Technology SP - 58 EP - 62 PB - Science Publishing Group SN - 2578-8353 UR - https://doi.org/10.11648/j.ajset.20160102.17 AB - The successful and economical design, scale up and operation of a fluidized bed reactor depends upon the true prediction of its bed hydrodynamics. The present research has been carried out to study the hydrodynamics behavior of bed of semolina particles in liquid solid fluidization. The prime objective of this research work is to study the effect of liquid superficial velocity and variation in static bed height on the minimum fluidization velocity and pressure drop. Liquid-solid fluidization is characterized by the uniform expansion of bed particles, therefore it is known as particulate fluidization. In liquid solid fluidization, there is no bubbling phase, that is the main cause of uniform bed expansion. Liquid-solid fluidization has extensive field of applications, i.e. in hydrometallurgy, waste water treatment, biochemical processing and food technology. Minimum fluidization velocity and pressure drop are important hydrodynamic parameters in the design and scale up of fluidized bed reactors. The experimental work was carried out in a column made up of acrylic having 60mm outer diameter and 2mm wall thickness and was 1000mm long. Manometers were used to observe the pressure drop variations across the bed. The minimum fluidization velocity was found to be 0.404mm/sec. It has been found that the minimum fluidization velocity is not affected by the variations in the initial static bed height. Semolina particles being sticky solids offer slightly greater pressure drop. Pressure drop becomes constant when fluidization is achieved. VL - 1 IS - 2 ER -
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