Laboratory Experiments and Mathematical Modeling Can Solve Furnace Operational Problems

Muijsenberg, H.P.H.; Ullrich, Jiřı́; Neff, Glenn

doi:10.1002/9780470529010.ch4

Cited by 2 publications

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“…The volume of the batch during its conversion to glass, including the foam growth and decay, can be measured as a function of temperature and heating rate using the batch expansion test, (see Figure ). The expansion kinetics can be generally expressed in the form of the gas‐phase balance:

\frac{d V_{G}}{d t} = R_{G} - R_{C},

where V G is the volume of gas in the batch, R G is the gas generation rate (leading to foam evolution), and R C is the gas release rate to the atmosphere (which governs foam collapse).…”

Section: Kinetic Limited Modelsmentioning

confidence: 99%

Modeling batch melting: Roles of heat transfer and reaction kinetics

et al. 2019

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Development of mathematical models of heat and mass transfer in glass‐melting furnaces began in the 1970s and progressed rapidly with advances in sophisticated experimental/numerical techniques and increasing computational power. Today, practically all newly built or rebuilt furnaces are optimized with these models to meet stringent quality requirements, reduce the unit costs of manufacturing, or control emissions. One remaining hurdle is to model the batch‐to‐glass conversion accurately enough to reliably assess the glass production rate. This article summarizes two key aspects of the batch‐conversion modeling—the heat transfer and the kinetics of conversion—and reviews the current state‐of‐the‐art approaches to simulating them. We critically examine the advantages of the commonly used heat transfer approach, but also explain that its predictive capabilities are significantly restricted by the dependence of batch thermal properties on the time‐temperature history. We argue that kinetic approaches to the batch‐conversion modeling would offer a significant improvement when coupled with the heat transfer approach. Finally, we summarize key areas requiring further research on the way toward a realistic model of the batch blanket.

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\frac{d V_{G}}{d t} = R_{G} - R_{C},

where V G is the volume of gas in the batch, R G is the gas generation rate (leading to foam evolution), and R C is the gas release rate to the atmosphere (which governs foam collapse).…”