
The effect of refractory wall emissivity on the energy efficiency of a gas-fired steam cracking pilot unit
- Author
- Stijn Vangaever, Joost Van Thielen, Jeremy Hood, John Olver, Petra Honnerovà, Geraldine Heynderickx (UGent) and Kevin Van Geem (UGent)
- Organization
- Abstract
- The effect of high emissivity coatings on the radiative heat transfer in steam cracking furnaces is far from understood. To start, there is a lack of experimental data describing the emissive properties of the materials encountered in steam cracking furnaces. Therefore, spectral normal emissivity measurements are carried out, evaluating the emissive properties of refractory firebricks before and after applying a high emissivity coating at elevated temperatures. The emissive properties are enhanced significantly after applying a high emissivity coating. Pilot unit steam cracking experiments show a 5% reduction in fuel gas firing rate after applying a high emissivity coating on the refractory of the cracking cells. A parametric study, showing the effect of reactor coil and furnace wall emissive properties on the radiative heat transfer inside a tube-in-box geometry, confirms that a non-gray gas model is required to accurately model the behavior of high emissivity coatings. Even though a gray gas model suffices to capture the heat sink behavior of a reactor coil, a non-gray gas model that is able to account for the absorption and re-emission in specific bands is necessary to accurately model the benefits of applying a high emissivity coating on the furnace wall.
- Keywords
- General Materials Science, radiative heat transfer, high emissivity coating, spectral normal emissivity, energy efficiency
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Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-8706845
- MLA
- Vangaever, Stijn, et al. “The Effect of Refractory Wall Emissivity on the Energy Efficiency of a Gas-Fired Steam Cracking Pilot Unit.” MATERIALS, vol. 14, no. 4, 2021, doi:10.3390/ma14040880.
- APA
- Vangaever, S., Van Thielen, J., Hood, J., Olver, J., Honnerovà, P., Heynderickx, G., & Van Geem, K. (2021). The effect of refractory wall emissivity on the energy efficiency of a gas-fired steam cracking pilot unit. MATERIALS, 14(4). https://doi.org/10.3390/ma14040880
- Chicago author-date
- Vangaever, Stijn, Joost Van Thielen, Jeremy Hood, John Olver, Petra Honnerovà, Geraldine Heynderickx, and Kevin Van Geem. 2021. “The Effect of Refractory Wall Emissivity on the Energy Efficiency of a Gas-Fired Steam Cracking Pilot Unit.” MATERIALS 14 (4). https://doi.org/10.3390/ma14040880.
- Chicago author-date (all authors)
- Vangaever, Stijn, Joost Van Thielen, Jeremy Hood, John Olver, Petra Honnerovà, Geraldine Heynderickx, and Kevin Van Geem. 2021. “The Effect of Refractory Wall Emissivity on the Energy Efficiency of a Gas-Fired Steam Cracking Pilot Unit.” MATERIALS 14 (4). doi:10.3390/ma14040880.
- Vancouver
- 1.Vangaever S, Van Thielen J, Hood J, Olver J, Honnerovà P, Heynderickx G, et al. The effect of refractory wall emissivity on the energy efficiency of a gas-fired steam cracking pilot unit. MATERIALS. 2021;14(4).
- IEEE
- [1]S. Vangaever et al., “The effect of refractory wall emissivity on the energy efficiency of a gas-fired steam cracking pilot unit,” MATERIALS, vol. 14, no. 4, 2021.
@article{8706845, abstract = {{The effect of high emissivity coatings on the radiative heat transfer in steam cracking furnaces is far from understood. To start, there is a lack of experimental data describing the emissive properties of the materials encountered in steam cracking furnaces. Therefore, spectral normal emissivity measurements are carried out, evaluating the emissive properties of refractory firebricks before and after applying a high emissivity coating at elevated temperatures. The emissive properties are enhanced significantly after applying a high emissivity coating. Pilot unit steam cracking experiments show a 5% reduction in fuel gas firing rate after applying a high emissivity coating on the refractory of the cracking cells. A parametric study, showing the effect of reactor coil and furnace wall emissive properties on the radiative heat transfer inside a tube-in-box geometry, confirms that a non-gray gas model is required to accurately model the behavior of high emissivity coatings. Even though a gray gas model suffices to capture the heat sink behavior of a reactor coil, a non-gray gas model that is able to account for the absorption and re-emission in specific bands is necessary to accurately model the benefits of applying a high emissivity coating on the furnace wall.}}, articleno = {{880}}, author = {{Vangaever, Stijn and Van Thielen, Joost and Hood, Jeremy and Olver, John and Honnerovà, Petra and Heynderickx, Geraldine and Van Geem, Kevin}}, issn = {{1996-1944}}, journal = {{MATERIALS}}, keywords = {{General Materials Science,radiative heat transfer,high emissivity coating,spectral normal emissivity,energy efficiency}}, language = {{eng}}, number = {{4}}, pages = {{22}}, title = {{The effect of refractory wall emissivity on the energy efficiency of a gas-fired steam cracking pilot unit}}, url = {{http://doi.org/10.3390/ma14040880}}, volume = {{14}}, year = {{2021}}, }
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