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Published in:
2016 | OriginalPaper | Chapter
Improving Fuel Gas Injection in Anode Baking Furnace
Authors : Pierre Mahieu, Patrice Sedmak
Published in: Light Metals 2014
Publisher: Springer International Publishing
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Anode baking process requires large amounts of fuel gas. Heating the refractory walls to bake the anodes is performed by direct gas injection from the top of the furnace. The resulting flame, called diffusion flame, has an impact on the anode baking performance and on pollutants formation. While combustion emissions, particularly the oxides of nitrogen (NOx), has become a major issue in most industries consuming fossil fuels, no major studies have been published in the field of anode baking. In 2010, Fives Solios launched a program dedicated to characterizing the combustion in anode baking furnace to develop a clean and efficient injection technology. Experimental approach was preferred rather than numerical simulation. A testing unit including an actual scale refractory flue wall with experimental instrumentation was designed and commissioned in 2012. Promising results in terms of NOx abatement and thermal distribution, and implementation on an existing anode baking furnace, will be discussed.