Physicochemical Aspects of Reactor Graphite Incineration

The incineration of reactor graphite in an air stream is studied. Thermogravimetric analysis showed that in air disperse graphite starts to burn at 843 K. The burn rate reaches a maximum at 1023 K and remains constant above this temperature. The logarithm of the burn rate was found to be a linear fu...

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Bibliographic Details
Published in:Atomic energy (New York, N.Y.) N.Y.), 2014-06, Vol.116 (2), p.105-109
Main Authors: Poluektov, P. P., Kashcheev, V. A., Ustinov, O. A., Musatov, N. D., Yakunin, S. A., Karlina, O. K., Diordii, M. N.
Format: Article
Language:English
Subjects:
Air flow
Combustion
Constants
Disperse
Gases
Graphite
Hadrons
Heavy Ions
Incineration
Nuclear Chemistry
Nuclear Energy
Nuclear Physics
Nuclear reactors
Oxidation
Particle size
Physics
Physics and Astronomy
Radon
Reactors
Streams
Studies
Surface area
Systems design
Temperature
Thermogravimetric analysis
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Summary:The incineration of reactor graphite in an air stream is studied. Thermogravimetric analysis showed that in air disperse graphite starts to burn at 843 K. The burn rate reaches a maximum at 1023 K and remains constant above this temperature. The logarithm of the burn rate was found to be a linear function of the reciprocal of the temperature: logv = –(2.75 ± 0.35)·10 4 /T. It was found that the burn rate at 1173 K per unit surface area for graphite samples with initial surface area from 600 to 1800 mm 2 is almost the same for all samples and equals (0.74 ± 0.15)·10 –3 kg/(m 2 ·sec).
ISSN:1063-4258
1573-8205
DOI:10.1007/s10512-014-9826-z