Mass and momentum transfer in packed beds of spherical inert particles
Апстракт
Mass transfer coefficients between fluid and immersed sphere in liquid dense and loose packed beds of spherical inert particles have been studied experimentally using column 40 mm in diameter. Mass transfer data were obtained by studying transfer of benzoic acid from a large spherical particle to flowing water using the disssolution method. In all runs mass transfer rates were determined in the presence of inert spherical glass particles 0.54, 0.68, 1.20, 1.94, 2.98 and 4.98 mm in diameter. Measurements have covered a particle Reynolds number range from 0.35 to 400 and one Schmidt number (25°C) 969. Experimental data are correlated by the widely used general form, j D = f(Re p ). The resulting correlation for packed beds, which covers dense and loose packed beds, is j D = 0.395ε -1,2 Re p -0,39 . In the same experimental systems a relationship between friction factor and particle Reynolds number has been studied. The results indicate that numerical constants in Ergun equation are syste...m specific.
Кључне речи:
Correlation / Mass transfer / Packed bedsИзвор:
Journal of the Serbian Chemical Society, 1996, 61, 4-5, 401-409Издавач:
- Serbian Chemical Society, Belgrade
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Bošković-Vragolović, Nevenka AU - Grbavčić, Željko AU - Janković, D. AU - Minić, V. PY - 1996 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/77 AB - Mass transfer coefficients between fluid and immersed sphere in liquid dense and loose packed beds of spherical inert particles have been studied experimentally using column 40 mm in diameter. Mass transfer data were obtained by studying transfer of benzoic acid from a large spherical particle to flowing water using the disssolution method. In all runs mass transfer rates were determined in the presence of inert spherical glass particles 0.54, 0.68, 1.20, 1.94, 2.98 and 4.98 mm in diameter. Measurements have covered a particle Reynolds number range from 0.35 to 400 and one Schmidt number (25°C) 969. Experimental data are correlated by the widely used general form, j D = f(Re p ). The resulting correlation for packed beds, which covers dense and loose packed beds, is j D = 0.395ε -1,2 Re p -0,39 . In the same experimental systems a relationship between friction factor and particle Reynolds number has been studied. The results indicate that numerical constants in Ergun equation are system specific. PB - Serbian Chemical Society, Belgrade T2 - Journal of the Serbian Chemical Society T1 - Mass and momentum transfer in packed beds of spherical inert particles EP - 409 IS - 4-5 SP - 401 VL - 61 UR - https://hdl.handle.net/21.15107/rcub_technorep_77 ER -
@article{ author = "Bošković-Vragolović, Nevenka and Grbavčić, Željko and Janković, D. and Minić, V.", year = "1996", abstract = "Mass transfer coefficients between fluid and immersed sphere in liquid dense and loose packed beds of spherical inert particles have been studied experimentally using column 40 mm in diameter. Mass transfer data were obtained by studying transfer of benzoic acid from a large spherical particle to flowing water using the disssolution method. In all runs mass transfer rates were determined in the presence of inert spherical glass particles 0.54, 0.68, 1.20, 1.94, 2.98 and 4.98 mm in diameter. Measurements have covered a particle Reynolds number range from 0.35 to 400 and one Schmidt number (25°C) 969. Experimental data are correlated by the widely used general form, j D = f(Re p ). The resulting correlation for packed beds, which covers dense and loose packed beds, is j D = 0.395ε -1,2 Re p -0,39 . In the same experimental systems a relationship between friction factor and particle Reynolds number has been studied. The results indicate that numerical constants in Ergun equation are system specific.", publisher = "Serbian Chemical Society, Belgrade", journal = "Journal of the Serbian Chemical Society", title = "Mass and momentum transfer in packed beds of spherical inert particles", pages = "409-401", number = "4-5", volume = "61", url = "https://hdl.handle.net/21.15107/rcub_technorep_77" }
Bošković-Vragolović, N., Grbavčić, Ž., Janković, D.,& Minić, V.. (1996). Mass and momentum transfer in packed beds of spherical inert particles. in Journal of the Serbian Chemical Society Serbian Chemical Society, Belgrade., 61(4-5), 401-409. https://hdl.handle.net/21.15107/rcub_technorep_77
Bošković-Vragolović N, Grbavčić Ž, Janković D, Minić V. Mass and momentum transfer in packed beds of spherical inert particles. in Journal of the Serbian Chemical Society. 1996;61(4-5):401-409. https://hdl.handle.net/21.15107/rcub_technorep_77 .
Bošković-Vragolović, Nevenka, Grbavčić, Željko, Janković, D., Minić, V., "Mass and momentum transfer in packed beds of spherical inert particles" in Journal of the Serbian Chemical Society, 61, no. 4-5 (1996):401-409, https://hdl.handle.net/21.15107/rcub_technorep_77 .