Experimental investigation of the oxidation behaviour of stainless steel exposed to different air- and oxy-fuel natural gas or hydrogen combustion atmospheres and temperatures during reheating on a semi-industrial scale
Claudia Radünz , Stefan Schwarz , María Agustina Ravotti , Christian Kislinger , Benjamin Plank , Martin Demuth , Christoph Hochenauer
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引用次数: 0
Abstract
In the future, steel has to be manufactured with significantly lower CO2 emissions. Consequently, heating methods other than natural gas-fired furnaces with air as an oxidiser need to be employed. This study investigates the impact of air- and oxy-fuel combustion with natural gas and hydrogen on the scaling behaviour of EN 1.4307 (AISI 304L) stainless steel. The residual oxygen, , and the sample core temperature, 1200 °C and 1300 °C, were varied. A discontinuous gravimetric measurement method was applied, utilising ten samples of 20 × 20 × 65 mm dimensions for each set. For atmosphere generation in a semi-industrial furnace, a multi-fuel and -oxidiser burner was used. The specific mass gain was most heavily dependent on the temperature, followed by the oxidiser and fuel. In the oxy-fuel combustion mode, the presence of residual oxygen in the atmosphere and the fuel had a negligible influence. At 1200 °C, switching from natural gas/air combustion to hydrogen/air combustion resulted in a 15 % increase in the specific mass gain and, when switching from natural gas/air to oxy-fuel with natural gas or hydrogen, in a 40 % increase.
期刊介绍：
The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc.
The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.
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