CFD analysis of natural gas substitution with syngas in the industrial furnaces

Piotr Jóźwiak, Jarosław Hercog, Aleksandra Kiedrzyńska and Krzysztof Badyda

Energy, 2019, vol. 179, issue C, 593-602

Abstract: Preheating and melting furnaces, which are widely used in many production sectors (e.g. steel, ceramic, aluminium), are simultaneously ones of the most energy-intensive. Great number of industrial furnaces and substantial energy consumption accompanied with the heat treatment process lead to significant environmental and economical footprint in Europe and beyond. Therefore, reducing natural gas consumption is an important step towards reducing CO2 emissions from industry. In this work, the possibility to partially replace natural gas with synthesis gas in an industrial furnace used in steel sector has been studied by using time-dependent CFD model. The considered syngases originate either from gasification of biomass (regarded as a carbon neutral fuel) or from steelmaking process. The main focus of this research was to reveal the impact of substituting natural gas with low-calorific alternative fuels on the temperature of the load treated inside the furnace. Analysis of the results, i.e. calculated heating curves of the load and surface temperature distributions compared to the existing furnace typical working conditions, have confirmed the possibility of co-firing without compromising the quality of the heat treatment. It was also determined that the level of thermal uniformity is closely related to the amount of air supplied to the furnace.

Keywords: CFD modelling; Industrial furnaces; Natural gas substitution; Syngas co-firing (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (9)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:179:y:2019:i:c:p:593-602

DOI: 10.1016/j.energy.2019.04.179

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