Hydrodynamics and Mass Transfer in a Jet-Agitated Vessel

by Martine Grisenti, CNRS, Toulouse, France,
Jacques George, CNRS, Toulouse, France,



Document Type: Proceeding Paper

Part of: Water Quality Issues at Fossil Fuel Plants

Abstract:

Experiments of carbon dioxide absorption in water have been carried out in a turbulent vessel presenting a zero mean shear stress value at the gas-liquid interface. Liquid-phase turbulence was produced by means of microjets injected upwards from the base of the tank. Measurements revealed the classical damping of turbulence towards the interface, where furthermore horizontal eddies were found to develop. Absorption experiments carried out in the vessel show the volumetric gas absorption coefficient to be related to the final level of homogeneous and isotropic turbulence in the vicinity of the surface. Thus, the turbulent kinetic energy in the near surface region seems to determine the mass transfer of weakly soluble gases at a gas-liquid interface.

Subject Headings: Absorption | Turbulence | Ships | Mass transfer | Turbulent flow | Carbon dioxide | Shear stress

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