Envisioning Improvement in the Radiative Heat Transfer and Service Life of the Silica Crown in Glass Furnaces
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The corrosion of the silica crown in the glass furnace is still a problem which does not enable a higher temperature of the superstructure. So the aim of this study was to transfer the developed surface treatment technology of ancorro to the superstructure of the furnace. Also a higher radiative heat transfer by changing the emissivity of the refractory should be realized. The corrosion tests were done with NaOH at 1200°C and 1500°C. After treating the silica material the service life increases up to 25%. To detect the corrosion attack of the bricks a 3D scanner was used for the measurement. After the surface treatment of the bricks the modified radiative heat transfer was measured by using an IR camera. The results were used for modeling a glass furnace with modified heat transfer by the silica crown. In comparison to experience and measured data from glass industry huge energy savings are possible.
Keywordssilica crown emission glass tank refractory corrosion energy savings
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