Kinetics of deuterium desorption from Pb17Li eutectic

Autor:	P.L. Lolli-Ceroni, A. Viola, K. Douglas, G. Pierini
Rok vydání:	1991
Předmět:	Materials science Hydrogen Mechanical Engineering Diffusion Thermodynamics chemistry.chemical_element Partial pressure Fusion power Nuclear Energy and Engineering chemistry Deuterium Desorption General Materials Science Tritium Civil and Structural Engineering Eutectic system
Zdroj:	Fusion Engineering and Design. 14:249-260
ISSN:	0920-3796
DOI:	10.1016/0920-3796(91)90009-f
Popis:	The recovery of tritium from the Pb17Li blanket concerns closely the design of a fusion reactor. In the recent past some theoretical studies have been carried out with the main purpose to demonstrate the feasibility of some extraction units usually applied in chemical plants. It was demonstrated that some units, such as the droplets spray and bubble towers, were suitable for extracting tritium from the Pb17Li alloy on the basis of the known phisico-chemical characteristics of the hydrogen isotopes/Pb17Li system and those data thermodynamically deduced. For an effective design of these units the knowledge of kinetics of tritium desorption from Pb17Li was necessary. In this paper are reported the data of deuterium desorption from the eutectic Pb17Li under different operating conditions of temperature and deuterium partial pressures in the liquid Pb17Li alloy. The theoretical analysis of these data has shown that the overall desorption process is governed by the diffusion of deuterium atoms in the Pb17Li and by the heterogeneous reaction at the gas-eutectic interface of the deuterium atoms recombination.
Databáze:	OpenAIRE
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