Feasibility study for the utilization of natural gas and hydrogen blends on industrial furnaces

IF 1.3 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Materiaux & Techniques Pub Date : 2021-01-01 DOI:10.1051/mattech/2022006
Irene Luzzo, F. Cirilli, G. Jochler, Alessio Gambato, Jacopo Longhi, Gabriele Rampinini
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引用次数: 5

Abstract

In the deep steel industry decarbonization, green hydrogen plays a pivotal role as alternative energy to replace natural gas and carbon bearing materials. In this frame, technical aspects and in general criticalities relevant to the use of mixtures of hydrogen and natural gas in industrial processes were investigated: in particular its effect was analyzed on employ of existing industrial burners for treatment furnace and on oxidability and descaling susceptibility of forged material as Grade F22V and Inconel® 625. The experimental campaign on burner using blends with 30% and 50%vol. of hydrogen in natural gas highlighted that it is possible to ignite the burner for both mixtures, but that the burner is more stable with the 30%vol. of hydrogen in natural gas. The detected emissions of nitrogen oxides compared to the natural gas increase up to 15%. The results indicated that selected high speed burner should be used in industrial plant with a 30% of hydrogen in volume with no need of hardware modifications. The oxidation investigation on atmospheres deriving from the combustion of 100% of hydrogen, at 1230 °C, showed a moderate scale increase up to 14% for F22V grade and 8% for Inconel® 625. This increase of scale growth has not detrimental effect on the scale removability. For the selected reference industrial scenario, the burner was positively tested in industrial furnace with a 30% of hydrogen in volume with no need of hardware modifications. Moderate scale growth was observed, but with no detrimental effect on the scale removability. Moreover, the H2 addition allows to get CO2 reductions, without any noticeable drawback on other process parameters or product quality for this industrial scenario.
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天然气和氢气混合燃料在工业炉上应用的可行性研究
在钢铁工业深度脱碳中,绿色氢作为替代天然气和含碳材料的替代能源发挥着举足轻重的作用。在此框架下,研究了与工业过程中使用氢气和天然气混合物相关的技术方面和一般关键问题:特别是分析了其对处理炉使用现有工业燃烧器的影响,以及对F22V级和Inconel®625级锻造材料的氧化性和除锈敏感性的影响。在燃烧器上使用30%和50%体积的混合气进行实验。天然气中的氢强调了两种混合物都有可能点燃燃烧器,但燃烧器在30%的体积下更稳定。天然气中的氢。与天然气相比,检测到的氮氧化物排放量增加了15%。结果表明,所选择的高速燃烧器在不需要硬件改造的情况下,可用于氢含量为30%的工业装置。在1230°C下,对100%氢气燃烧产生的气氛进行氧化研究,结果表明,F22V等级的氧化垢增加了14%,Inconel®625的氧化垢增加了8%。这种水垢生长的增加对去除水垢的能力没有不利影响。对于选定的参考工业场景,燃烧器在不需要硬件修改的情况下,在氢气体积为30%的工业炉中进行了积极的测试。观察到适度的水垢生长,但对水垢的去除性没有不利影响。此外,氢气的加入可以减少二氧化碳的排放,而在其他工艺参数或产品质量方面没有任何明显的缺点。
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来源期刊
Materiaux & Techniques
Materiaux & Techniques MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
1.50
自引率
11.10%
发文量
20
期刊介绍: Matériaux & Techniques informs you, through high-quality and peer-reviewed research papers on research and progress in the domain of materials: physical-chemical characterization, implementation, resistance of materials in their environment (properties of use, modelling)... The journal concerns all materials, metals and alloys, nanotechnology, plastics, elastomers, composite materials, glass or ceramics. This journal for materials scientists, chemists, physicists, ceramicists, engineers, metallurgists and students provides 6 issues per year plus a special issue. Each issue, in addition to scientific articles on specialized topics, also contains selected technical news (conference announcements, new products etc.).
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