Kinetik der Graphit/Sauerstoff-Reaktion im Porendiffusionsbereich
Kinetik der Graphit/Sauerstoff-Reaktion im Porendiffusionsbereich
In the course of analyses of severe air ingress accidents in high temperature gas-cooled reactors the present report deals with the kinetics of the reactions between oxygen and the graphitic fuel element matrix materials A3-3 and A3-27. Kinetic experiments covering a temperature range of approx. 950...
Saved in:
Personal Name(s): | Hinssen, Hans-Klemens |
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Katscher, W. / Moormann, R. | |
Contributing Institute: |
Publikationen vor 2000; PRE-2000; Retrocat |
Imprint: |
Jülich
Kernforschungsanlage Jülich GmbH, Zentralbiliothek, Verlag
1983
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Physical Description: |
76 p. |
Document Type: |
Report Book |
Research Program: |
ohne Topic |
Series Title: |
Berichte der Kernforschungsanlage Jülich
1875 |
Link: |
OpenAccess |
Publikationsportal JuSER |
In the course of analyses of severe air ingress accidents in high temperature gas-cooled reactors the present report deals with the kinetics of the reactions between oxygen and the graphitic fuel element matrix materials A3-3 and A3-27. Kinetic experiments covering a temperature range of approx. 950 to 1200 K (approx. 680 to 930 ° C) and a range of oxygen partial pressures between 1500 and 15000 Pa (0,015 and 0,15 bar) at a constant total pressure of 1,5 bar (carrier gas Helium) are presented. Their results are comprehended to Hinshelwood-Langmuir-like correlations. These correlations give maximum reaction rates, as they are valid for thatgraphite burn-off field, in which the reaction rate no longer increases with burn-off. The experiments, however, give some evidence about the burnoff dependence. A clear influence of the temperature on the increase factor of the reaction rate can be realized : the increase factor declines with rising temperature. A comparison of the experimental results with literature data, which, however, touch the above mentioned parameter range only at its periphery and thus had to be extrapolated, established satisfactory results. |