TAILIEUCHUNG - Thermal decomposition analysis of simulated high-level liquid waste in cold-cap

In this study, reaction rates of the thermal decomposition reaction of 13 kinds of nitrates, which are main constituents of simulated HLLW (sHLLW), were investigated using thermogravimetrical instrument in a range of room temperature to 1000 °C. | Thermal decomposition analysis of simulated high-level liquid waste in cold-cap EPJ Nuclear Sci. Technol. 2 44 2016 Nuclear Sciences K. Kawai et al. published by EDP Sciences 2016 amp Technologies DOI epjn 2016038 Available online at http REGULAR ARTICLE Thermal decomposition analysis of simulated high-level liquid waste in cold-cap Kota Kawai Tatsuya Fukuda Yoshio Nakano and Kenji Takeshita Research Laboratory for Nuclear Reactor Tokyo Institute of Technology 2-12-1-N1-2 Ookayama Meguro-ku Tokyo 152-8550 Japan Received 19 October 2015 Received in final form 30 September 2016 Accepted 8 November 2016 Abstract. The cold cap floating on top of the molten glass pool in liquid fed joule-heated ceramic melter plays an important role for operation of the vitrification process. A series of such phenomena as evaporation melting and thermal decomposition of HLLW high-level liquid waste takes place within the cold-cap. An understanding of the varied thermal decomposition behavior of various nitrates constituting HLLW is necessary to elucidate a series of phenomena occurring within the cold-cap. In this study reaction rates of the thermal decomposition reaction of 13 kinds of nitrates which are main constituents of simulated HLLW sHLLW were investigated using thermogravimetrical instrument in a range of room temperature to 1000 C. The reaction rates of the thermal decompositions of 13 kinds of nitrates were depicted according to composition ratio wt of each nitrate in sHLLW. It was found that the thermal decomposition of sHLLW could be predicted by the reaction rates and reaction temperatures of individual nitrates. The thermal decomposition of sHLLW with borosilicate glass system was also investigated. The above mentioned results will be able to provide a useful knowledge for understanding the phenomena occurring within the cold-cap. 1 Introduction The contact with glass beads results in further chemical reactions to incorporate all waste constituents .

• Năng lượng
• Thermal decomposition reaction
• High level liquid waste
• Constituents of simulated HLLW
• Thermal decomposition analysis
• Generation of hydrogen
• Coherent stokes generation
• Stimulated Raman scattering
• Gas filled HC PCFs
• Hollow core photonic crystal fibres
• Coherent stokes field in hydrogen gas filled
• Journal of Chemistry
• Direct current magnetron sputtering
• Hydrogen generation
• Sodium borohydride
• X ray diffraction (XRD)
• Excited state
• Superposition state
• Coherent superposition state
• Hydrogen molecular ion
• High order harmonic generation
• Graphene hydrogel
• Cobalt copper
• Ammonia borane
• Tạp chí Khoa học
• Khoa học trái đất và môi trường
• Electro Fenton
• Hydroxyl radical
• Hydrogen peroxide
• Hydrogen tetroxide
• Polymer supported hypervalent iodine
• Singlet oxygen
• Poly[4 diacetoxyiodo]styrene
• Singlet molecular oxygen
• Energy Efficiency Opportunities
• Monitoring & Process Control Systems
• Heat Transfer– Fouling
• Hydrogen Management and Recovery
• Combined Heat and Power Generation
• Alternative Production Flows
• Several analytical techniques
• X Ray Diffraction
• UV Visible spectroscopy
• Fourier transform infrared
• Transmission electron microscopy
• Covariance matrix associated
• Atomic Center of Bariloche
• Neutron thermal scattering
• Law covariance matrix
• TSL of hydrogen