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(Mitsuharu Ide),(Hiroki Uchiyama),(Toshifumi Ishikura) 한국화학공학회 1999 Korean Journal of Chemical Engineering Vol.16 No.5
A gas-liquid two phase plunging jet is formed through a gas sucking type multi-jet ejector nozzle. In this study, the effects of various conditions in the multi-jet ejector nozzle, the column diameter, and the liquid jet length on penetration depth of air bubbles l_B and gas holdup h_G in a gas-liquid two phase plunging jet absorber were studied experimentally. Consequently, empirical equations concerning l_B and h_G were obtained, respectively. These equations agree with the experimental data with an accuracy of ±20% for l_B and ±25% for h_G.
Ishikura, Toshifumi,Ide, Mitsuharu,Uchiyama, Hiroki 한국화학공학회 1999 Korean Journal of Chemical Engineering Vol.16 No.5
A gas-liquid two phase plunging jet is formed through a gas sucking type multi-jet ejector nozzle. In this study, the effects of various conditions in the multi-jet ejector nozzle, the column diameter, and the liquid jet length on penetration depth of air bubbles l_B and gas holdup h_G in a gas-liquid two phase plunging jet absorber were studied experimentally. Consequently, empirical equations concerning l_B and h_G were obtained, respectively. These equations agree with the experimental data with an accuracy of ±20% for l_B and ±25% for h_G.
(Hiroshi Nagashima),(Toshifumi Ishikura),(Mitsuharu Ide) 한국화학공학회 1999 Korean Journal of Chemical Engineering Vol.16 No.5
A spouted bed with an impermeable draft tube was employed to obtain fundamental data of binary mixtures of glass beads for both the operating conditions and the design factors. These data were compared with those for the coarser particle system only. From this view point, minimum spouting velocity, pressure drop, hold-up of solid particles within a draft tube, upward gas flow rate within the annulus and solids circulation rate were determined by changing the total gas flow rate and mass fraction of finer particles as operating parameters and by changing distance of entrainment zone and draft tube diameter as geometric parameters.
Hydrodynamics of a Spouted Bed with an Impermeable Draft Tube for Binary Particle Systems
Nagashima, Hiroshi,Ishikura, Toshifumi,Ide, Mitsuharu 한국화학공학회 1999 Korean Journal of Chemical Engineering Vol.16 No.5
A spouted bed with an impermeable draft tube was employed to obtain fundamental data of binary mixtures of glass beads for both the operating conditions and the design factors. These data were compared with those for the coarser particle system only. From this view point, minimum spouting velocity, pressure drop, hold-up of solid particles within a draft tube, upward gas flow rate within the annulus and solids circulation rate were determined by changing the total gas flow rate and mass fraction of finer particles as operating parameters and by changing distance of entrainment zone and draft tube diameter as geometric parameters.