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Report No.
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Study of the oxidation reaction in bituminized products by infrared absorption measurements

not registered   ; Shibata, Atsuhiro  ; not registered ; not registered; Koyama, Tomozo

In the investigation of bituminization demonstration facility incident, oxidation reaction of bituminized products with air was considered to be one of the potential causes for the fire incident. In this study, the possibility for the proceeding of the oxidation reaction in bituminized products was investigated with the fundamental data which were obtained from the study on the oxidation reaction in simulated bituminized products by infrared (IR) absorption measurements. The results of IR analysis during the oxidation reaction in the simulated bituminized products showed that functional groups with the oxygen generated mainly under non-air atmosphere, but the dehydrogenation reaction proceeded simultaneously under air atmosphere. It was also recognized that the change of absorption peaks assigned to cyanides in the simulated bituminized products under the non-air atmosphere was different from that under the air atmosphere. The results of IR measurements for the bituminized products in filling room indicated that the oxidation reaction (generation of the functional groups with the oxygen) was occurred more furiously in the bituminized products made at around 29B than that in the normal operation. They also showed a very little contribution of dehydrogenation reaction and the changes of peaks assigned to the cyanides in the bituminized products. These suggest that the oxidation reaction of the bituminized products in the filling room might proceed under the non-air atmosphere.

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