Conversion degree and heat transfer in the cold cap and their effect on glass production rate in an electric melter

0571769 - ÚSMH 2024 RIV US eng J - Článek v odborném periodiku
Ferkl, P. - Hrma, P. - Abboud, A. - Guillen, D.P. - Vernerová, Miroslava - Kloužek, Jaroslav - Hall, M. - Kruger, A.A. - Pokorný, Richard
Conversion degree and heat transfer in the cold cap and their effect on glass production rate in an electric melter.
International Journal of Applied Glass Science. Roč. 14, č. 2 (2023), s. 318-329. ISSN 2041-1286. E-ISSN 2041-1294
Institucionální podpora: RVO:67985891
Klíčová slova: batch reactions * heat transfer * modeling * nuclear waste * reaction kinetics
Obor OECD: Ceramics
Impakt faktor: 2.1, rok: 2022
Způsob publikování: Open access
https://doi.org/10.1111/ijag.16615

A predictive model of melt rate in waste glass vitrification operations is needed to inform melter operations during normal and off-normal operations. This paper describes the development of a model of the cold cap (the reacting melter feed floating on molten glass in a glass melter) that couples heat transfer with the feed-to-glass conversion kinetics. The model was applied to four melter feeds designed for high-level and low-activity nuclear waste feeds using the material properties, either measured or estimated, to obtain temperature and conversion distribution within the cold cap. The cold cap model, when coupled with a computational fluid dynamics model of a Joule-heated glass melter, allows the prediction of the glass production rate and power consumption. The results show reasonable agreement with the melting rates measured during pilot-scale melter tests.
Trvalý link: https://hdl.handle.net/11104/0342840