Suscripción a Biblioteca: Guest
Página principal de la Biblioteca Digital de ICHMT Año actual Archivos Comité Ejecutivo Centro Internacional de Transferencia de Calor y Masa

Mass transfer without and with chemical reaction in particulate fluidized beds

DOI: 10.1615/ICHMT.2015.THMT-15.1980
pages 871-874

D. Jaćimovski
Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia

R. Garić-Grulović
Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia

R. Pjanović
Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11120 Belgrade, Serbia

N. Bosković-Vragolović
Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11120 Belgrade, Serbia

Sinopsis

This paper presents the results of an experimental investigation of the mass transfer between the column wall and fluidized bed without and with fast, irreversible chemical reaction. Experiments were performed in the column 34 mm in diameter with inner channel filled with benzoic acid. The inert, spherical, glass particles with diameter of 1.94 mm were used as fluidized bed and the fluidization medium was aqueous solution of sodium hydroxide. In order to obtain a clear result of the impact of particles on the intensity of the mass transfer, experiments with and without chemical reaction are also done in systems without particles.
The value of the enhancement factor of the mass transfer coefficient due to the presence of chemical reactions was found using experimental results. It was shown that the influence of the particles presence and the effect of chemical reactions have additive character on the mass transfer. The chemical reaction in systems without particles increases mass transfer coefficients 20 times, while the presence of fluidized particles increases the mass transfer coefficients 28 times. Obtained results showed good agreement with literature correlations.
In order to establish analogies between momentum and mass transfer in a fluidized bed, with chemical reaction, experimental results are also presented.

ICHMT Digital Library

Bow shocks on a jet-like solid body shape. Thermal Sciences 2004, 2004. Pulsed, supersonic fuel jets - their characteristics and potential for improved diesel engine injection. PULSED, SUPERSONIC FUEL JETS - THEIR CHARACTERISTICS AND POTENTIAL FOR IMPROVED DIESEL ENGINE INJECTION
View of engine compartment components (left). Plots of temperature distributions in centreplane, forward of engine (right). CHT-04 - Advances in Computational Heat Transfer III, 2004. Devel... DEVELOPMENT AND CURRENT STATUS OF INDUSTRIAL THERMOFLUIDS CFD ANALYSIS
Pratt & Whitney's F-135 Joint Strike Fighter Engine under test in Florida is a 3600F class jet engine. TURBINE-09, 2009. Turbine airfoil leading edge stagnation aerodynamics and heat transfe... TURBINE AIRFOIL LEADING EDGE STAGNATION AERODYNAMICS AND HEAT TRANSFER - A REVIEW
Refractive index reconstructed field. (a) Second iteration. (b) Fourth iteration. Radiative Transfer - VI, 2010. Theoretical development for refractive index reconstruction from a radiative ... THEORETICAL DEVELOPMENT FOR REFRACTIVE INDEX RECONSTRUCTION FROM A RADIATIVE TRANSFER EQUATION-BASED ALGORITHM
Two inclusion test, four collimated sources. Radiative Transfer - VI, 2010. New developments in frequency domain optical tomography. Part II. Application with a L-BFGS associated to an inexa... NEW DEVELOPMENTS IN FREQUENCY DOMAIN OPTICAL TOMOGRAPHY. PART II. APPLICATION WITH A L-BFGS ASSOCIATED TO AN INEXACT LINE SEARCH