Analyse des wärmeübergangs in blasensäulen

Käst, W.

doi:10.1016/0017-9310(62)90022-4

Cited by 67 publications

(38 citation statements)

References 3 publications

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“…The higher the superficial gas velocity, the higher the solution flow and the thinner the diffusion layer, that is the higher the rate of transfer of cupric ions to the surface of the resin particles. ± According to Kast [24] a fluid element in front of the rising bubble receives a radial momentum in addition to the axial momentum. This radial mass transport forced by the axial bubble motion weakens and breaks up the boundary layer at the surface of the resin particles.…”

Section: Resultsmentioning

confidence: 99%

Mass Transfer Characteristics during the Removal of Dissolved Heavy Metals from Waste Solutions in Gas Sparged Fluidized Beds of Ion Exchange Resins

Zarraa¹

1999

Chem. Eng. Technol.

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The paper presents experimental results concerning the removal of cupric ions from a simulated wastewater effluent consisting of copper sulphate solution in a gas sparged fluidized bed of cation exchange resin. Variables investigated were: superficial gas velocity, particle diameter, bed height and the physical properties of the solution (adding glycerol). These variables were studied with respect to their effect on the solid-liquid mass transfer coefficient. The coefficient was found to increase with increasing superficial gas velocity. Increasing both particle diameter and bed height were found to reduce the mass transfer coefficient. The experimental data can be correlated by the equation J = 0.68 (Fr Re ) ±0.143

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Section: Resultsmentioning

confidence: 99%

Mass Transfer Characteristics during the Removal of Dissolved Heavy Metals from Waste Solutions in Gas Sparged Fluidized Beds of Ion Exchange Resins

Zarraa¹

1999

Chem. Eng. Technol.

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“…The reactor may be cooled or heated by means of internal heat exchanges. One of the main features is very high heat transfer coefficients [75], thus ensuring a fairly uniform temperature throughout the reactor even with strong exothermic/endothermic reactions. This is of special significance when reactions in which the selectivity is highly dependent on temperature are involved.…”

Section: Hydrodynamics Of Simple Bubble Columnsmentioning

confidence: 99%