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

IF 2.1 3区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

International Journal of Applied Glass Science Pub Date : 2022-09-17 DOI:10.1111/ijag.16615

Pavel Ferkl, Pavel Hrma, Alexander Abboud, Donna Post Guillen, Miroslava Vernerová, Jaroslav Kloužek, Mark Hall, Albert A. Kruger, Richard Pokorný

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引用次数: 1

Abstract

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.

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冷帽内的转换度和传热及其对电熔玻璃生产率的影响

需要在废玻璃玻璃化操作中建立熔化速率的预测模型，以便在正常和非正常操作期间为熔炼机操作提供信息。本文描述了冷帽模型的发展(在玻璃熔炼机中，反应熔料漂浮在熔融玻璃上)，该模型将传热与进料到玻璃的转化动力学耦合在一起。该模型应用于四个为高放射性和低活性核废料进料设计的熔体，使用测量或估计的材料特性来获得冷帽内的温度和转换分布。冷帽模型与焦耳加热玻璃熔体的计算流体动力学模型相结合，可以预测玻璃的生产率和功耗。结果与中试试验中测量的熔化速率基本一致。

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来源期刊

International Journal of Applied Glass Science MATERIALS SCIENCE, CERAMICS-

CiteScore

4.50

自引率

9.50%

发文量

审稿时长

>12 weeks

期刊介绍： The International Journal of Applied Glass Science (IJAGS) endeavors to be an indispensable source of information dealing with the application of glass science and engineering across the entire materials spectrum. Through the solicitation, editing, and publishing of cutting-edge peer-reviewed papers, IJAGS will be a highly respected and enduring chronicle of major advances in applied glass science throughout this century. It will be of critical value to the work of scientists, engineers, educators, students, and organizations involved in the research, manufacture and utilization of the material glass. Guided by an International Advisory Board, IJAGS will focus on topical issue themes that broadly encompass the advanced description, application, modeling, manufacture, and experimental investigation of glass.