Results 41 to 50 of about 100 (88)
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Solids circulation in a spout‐fluid bed with draft tibe
Canadian Journal of Chemical Engineering, 1988AbstractA 20 cm diameter semi‐cylindrical spout‐fluid bed with a draft tube has been used to study the effects of operating and geometric parameters on the solids circulation rates at ambient temperature. A new technique has been developed for measuring the solids fluxes with great accuracy.
Franco Berruti +2 more
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Minimum spouting velocity in a spout‐fluid bed with a draft tube
Canadian Journal of Chemical Engineering, 2009AbstractMinimum spouting velocity was measured in a 0.12 m cylindrical spout‐fluid bed with a draft tube. The effects of fluidizing gas flow rate, entrainment height, and spout nozzle diameter on minimum spouting velocity were discussed. A correlation on minimum spouting velocity has been proposed based on the present experimental data.
Jian Xu +3 more
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The mechanics of spout‐fluid beds at the minimum spout‐fluid flowrate
The Canadian Journal of Chemical Engineering, 1983AbstractEquations for predicting the minimum fluid flowrate in spout‐fluid beds of coarse spherical particles are developed and experimentally verified. Correlations for the spout diameter and maximum spoutable height are also given. The annular pressure drop equations developed in previous work are experimentally verified.
Dž. E. Hadžisdmajlović +3 more
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Hydrodynamics of spout fluid beds
2010Experiments were conducted in a spout-fluid bed, a modified version of a standard spouted bed, incorporating auxiliary flow in addition to central flow. The auxiliary flow was supplied in three different ways through the perforated conical distributor base. The vessel used was a cylindrical half column, 0.15 m in diameter and 1.05 m high fitted with an
Wenqi Zhong +3 more
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Prediction of the maximum spoutable bed height in spout‐fluid beds
The Canadian Journal of Chemical Engineering, 1991AbstractA model for predicting the ratio of the maximum spoutable bed height in a spout‐fluid bed to the maximum spoutable bed height in a spouted bed is presented and experimentally verified. The model is a further extension of the basic Mamuro and Hattori force balance model.
Ž. B. Grbavčić +4 more
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Pressure distribution in spout‐fluid bed reactors
The Canadian Journal of Chemical Engineering, 1983AbstractThe occurrence of several flow regimes in spout‐fluid beds was investigated. Four different flow regimes, viz. a packed bed flow regime, a bubbling and a fluctuating spouted bed flow regime and a stable spouted bed flow regime, were found to exist.
Heil, C., Tels, M.
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Flow regimes for spout‐fluid beds
The Canadian Journal of Chemical Engineering, 1984On a fait varier les debits d'air et d'eau, dans le cœur et dans l'anneau, de zero jusqu'a la vitesse de transport des particules spheriques de carbonate de calcium de 1,8 mm de diametre. On a identifie trois regimes d'ecoulement, et on a determine les criteres servant a specifier chaque ...
D. V. Vuković +4 more
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Voidage and particle velocity profiles in a spout‐fluid bed
The Canadian Journal of Chemical Engineering, 2000AbstractDetailed hydodynamic measurements have been obtained for fully cylindrical spout‐fluid beds of 1.3 mm, 1.8 mm and 2.5 mm glass beads in a fully cylindrical column of diameter 152 mm using three different types of optical fibre probes. The reallocation of up to 43% of the air to auxiliary air introduced through the conical base caused some ...
Freitas, Lap +4 more
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Wall‐to‐bed heat transfer characteristics of spout‐fluid beds
The Canadian Journal of Chemical Engineering, 1983AbstractWall‐to‐bed heat transfer characteristics have been investigated in a rectangular spout‐fluid (S–F) bed segment column (20 cm length, 5 cm width and 50 cm height) utilizing glass beads (Dp = 0.254, 0.388 and 0.461 mm) and air as fluid. Results indicate that h values in the S–F bed increase with increasing air mass velocity and particle diameter,
CHATTERJEE, A +2 more
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Flow characteristics in a rectangular spout-fluid bed
Powder Technology, 1992Abstract Hydrodynamic studies are reported on six different materials, spouted and spout-fluidised with air in a column of square cross-section, using nozzles of five different sizes. Correlations for minimum spout-fluidised flow rate in cylindrical columns were investigated for this geometry.
Mohammed Zohdi Anabtawi +2 more
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