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Feed-to-Glass Conversion and Modeling During High-Level Liquid Waste Vitrification
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Dongqing XU1, 2, Luyao LI1, 2, Ziqiang JIA1, 2, Kai XU1, 2
Journal of the Chinese Ceramic Society | 2023, 51(8) : 2009 - 2016
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Journal of the Chinese Ceramic Society | 2023, 51(8): 2009-2016
• Research Articles •
Feed-to-Glass Conversion and Modeling During High-Level Liquid Waste Vitrification
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Dongqing XU1, 2, Luyao LI1, 2, Ziqiang JIA1, 2, Kai XU1, 2
Affiliations
  • 1.State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
  • 2.CNPE-WHUT Joint Laboratory of Nuclear Waste Vitrification Technology, Beijing 100840, China

    • XU Dongqing (1997-), male, Master candidate. E-mail:

About Author:

XU Dongqing (1997-), male, Master candidate. E-mail:

Published: 2023-05-05 doi: 10.14062/j.issn.0454-5648.20221080
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The feed-to-glass conversion within the cold cap and the mathematical modeling of the process are of great concern for the accurate simulation of the melter for vitrification of high-level liquid waste (HLLW). To figure out the feed-to-glass conversion during the HLLW vitrification, the phase transitions and structural features within the cold cap were investigated. The results show that the cold cap consists of the upper reaction layer (at 100-700 ℃) and the lower foam layer (at 700-1 000 ℃). The dehydration and nitrate decomposition occur in the reaction layer, while the continuous melt as well as the formation and dissolution of intermediate phases appear in the foam layer. The reaction layer can be simplified into a one-dimensional mass transfer model based on the mass conservation equation and experimental results. Subsequently, the kinetic equation of feed-to-glass conversion is proposed to quantitatively describe the three reaction rates of dehydration (at 100-400 ℃), and melting (at 200-300 ℃) and decomposition (at 400-700 ℃) of nitrates as functions of temperature in the reaction layer, providing some crucial parameters for melter simulation.

high-level liquid waste  /  vitrification  /  feed  /  phase transformation  /  cold cap  /  conversion kinetics model
徐冬青, 李路瑶, 贾子强, 徐凯. 高放废液玻璃固化中配合料的玻璃化过程与建模. 硅酸盐学报, 2023 , 51 (8) : 2009 -2016 . DOI: 10.14062/j.issn.0454-5648.20221080
Dongqing XU, Luyao LI, Ziqiang JIA, Kai XU. Feed-to-Glass Conversion and Modeling During High-Level Liquid Waste Vitrification[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (8) : 2009 -2016 . DOI: 10.14062/j.issn.0454-5648.20221080
Appendix
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Year 2023 volume 51 Issue 8
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Article Info
doi: 10.14062/j.issn.0454-5648.20221080
  • Receive Date：2022-12-13
  • Online Date：2026-10-19
  • Published：2023-05-05
Article Data
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History
  • Received：2022-12-13
  • Revised：2023-03-14
Funding
Affiliations
    1.State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
    2.CNPE-WHUT Joint Laboratory of Nuclear Waste Vitrification Technology, Beijing 100840, China

Corresponding:

XU Kai (1982-), male, Ph.D., Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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