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IIJME:Volume 2, Issue 7, July 2014

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Title:
Experimental Study on the Bed Voidage and Minimum Fluidization Velocity of Gas-Solid Fluidization under Different Conditions
Author Name:
Basma Abdulhadi Badday, A.V.S.S.K.S. Gupta, Ammar Arab Beddai, M.T.Naik
Abstract:
ABSTRACT The objective of this research is to study the effect of particle size on minimum fluidization velocity (Umf) and the gas superficial velocity on bed voidage. Three particles sizes of sand were fluidized in air at atmospheric pressure and temperature. The experiments were conducted in a 0.1 m ID and 1 m height fluidization column made from acrylic. Local sand of three different sizes 301μm, 454μm, and 560μm were used as the bed material. Four superficial air velocities of 1.0 m/s, 1.25 m/s, 1.5 m/s, 1.75 m/s were used.The suitability of several minimum fluidization velocity correlations has been investigated for sand particles. Prediction due to Todes et al. (1958) agree reasonably with experimental data. The bed voidage calculation showed two different region, dense phase section 1 and the lean phase sections 2, 3, 4, and 5. The bed voidage found to be increasing in the section 1 and is decreasing in the other sections with increasing the gas superficial velocity. Keywords: Fluidization, Hydrodynamics, Minimum Fluidization Velocity, Bed Voidage.
Cite this article:
Basma Abdulhadi Badday, A.V.S.S.K.S. Gupta, Ammar Arab Beddai, M.T.Naik , " Experimental Study on the Bed Voidage and Minimum Fluidization Velocity of Gas-Solid Fluidization under Different Conditions" , IPASJ INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING (IIJME) , Volume 2, Issue 7, July 2014 , pp. 022-026 , ISSN 2321-6441.
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