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International Journal of Technology
Year : 2017, Volume : 7, Issue : 2
First page : ( 96) Last page : ( 112)
Print ISSN : 2231-3907. Online ISSN : 2231-3915.
Article DOI : 10.5958/2231-3915.2017.00016.5

Experimental Investigations on Hydrodynamics of Fluidization of Gas Solid Fluidized Beds

Sahu Abhishek1,*, Kumar Saurabh2

1M. Tech Scholar, Thermal Engineering Raipur Institute of Technology, Raipur, Chhattisgarh, India

2Associate Professor, Department of Mechanical Engineering, Raipur Institute of Technology, Raipur, Chhattisgarh, India

*Corresponding Author E-mail: er.abhisheksahu24@gmail.com

Online published on 5 April, 2018.

Abstract

Experimental investigations on hydrodynamics of fluidization of gas solid fluidized beds include the study minimum fluidizationvelocity, pressure drop and rise in bed height of fluidized bed by performing the experiment. The solid particle that are used for bed material are Green pea (ρ=1428.57 kg/m3), coal (ρ=1538.46 kg/m3) and sand ((ρ= 2666.7 kg/m3). Air is used to fluidize the fixed bed. Before performing the experiment material have been crushed and sieved into three different sizes i.e. 2 mm, 6mm, and 8mm. The experiments are conducted in an acrylic pipe of 4 cm internal diameter having length of pipe is 100 cm. The experiments have been done for different static packed bed height 4cm. 6cm, 8cm, 10cm. Duringthis investigation, experiment have been conducted to determine thevarious fluidizing parameter such as minimum fluidization velocity, rise in bed height and pressure dropfor each material for different particle size by varying the size of the particle, density of the particle and static packed bed height. It is found that minimum fluidization velocity and pressure drop are increased by increasing the density of the particle and size of the particle while minimum fluidization is independent of static bed height and Pressure drop increases with increasing the static bed height of the packed bed. While the rise in fluidized bed height decreases with increasing the size of the particle and density of the particle and with increasing the static bed height there is increase in rise in bed height.

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Keywords

Hydrodynamic, Minimum Fluidization Velocity, Rise in Bed Height, Density of Particle, Particle Size and Pressure Drop.

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