Green approach to ironmaking: Briquetting and hydrogen reduction of mill scale using novel binders

Elsadek, Mohamed; Mousa, Elsayed; Ahmed, Hesham

doi:10.1016/j.ijhydene.2024.03.152

International Journal of Hydrogen Energy

2024

DOI: 10.1016/j.ijhydene.2024.03.152

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Green approach to ironmaking: Briquetting and hydrogen reduction of mill scale using novel binders

Mohamed Elsadek,

Elsayed Mousa,

Hesham Ahmed

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2024

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Cited by 2 publications

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Experimental and performance analysis of organic fraction of municipal solid waste in downdraft gasifier

Ganesan,

Vedagiri

2024

Proceedings of the Institution of Mechanical Engineers, Part E:

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It is anticipated that the production of municipal solid waste will increase from 2.10 billion tonnes in 2023 to 3.80 billion tonnes by 2050. About 170 billion metric tonnes of biomass is produced worldwide each year. On a wet basis, the composition of municipal solid waste (MSW) includes approximately 20% of wood, 70% of food waste, 60% of yard trimmings, and 50% of other organic materials. Gasification of waste biomass is one of the most efficient processes for creating gaseous fuel and subsequently power with reduced environmental impact. The current work presents a novel strategy to reduce MSW by converting waste into briquettes and feeding it in gasifiers to produce syngas. The downdraft gasifier is employed in the syngas generation process. With a calorific value of 22.6 MJ/kg and a higher lignin concentration of approximately 31%, MSW proves to be suitable for thermochemical conversion processes. This article presents the results during gasification of briquette made from organic fraction of municipal solid waste (OFMSW) with significant heating value of 22.6 MJ/kg. The fuel produced by the gasifier has a heating value ranging from 920 to 1150 kcal/m3, making it clean-burning. Its primary components consist of 19% to 23% carbon monoxide and 17% to 21% hydrogen. This study offers a unique investigation into the gasification behavior of the organic fraction of OFMSW in a downdraft gasifier, with an emphasis on optimizing operational parameters and evaluating the yield and quality of syngas. Although gasification has been widely studied as a thermochemical conversion method for biomass, the specific performance of OFMSW in this process has received limited attention. By focusing on this underexplored area, the study enhances the understanding of OFMSW's potential in gasification and its contribution to sustainable energy production, thereby addressing key issues in both waste management and renewable energy generation.

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Experimental and performance analysis of organic fraction of municipal solid waste in downdraft gasifier

Ganesan,

Vedagiri

2024

Proceedings of the Institution of Mechanical Engineers, Part E:

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Processo e termodinâmica da redução a hidrogênio do minério de ferro

Lima Fernandes da Silva,

Eduardo Soares da Silva,

Silverio Pereira

et al. 2024

CadUniFOA

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O interesse na redução a hidrogênio do minério de ferro reside na busca por métodos de produção de aço mais sustentáveis e eficientes, visando à descarbonização do setor siderúrgico. A tecnologia H-DRI utiliza hidrogênio verde como agente redutor, possibilitando a produção de aço com menor impacto ambiental. O processo envolve várias etapas: inicialmente, o minério de ferro é pré-aquecido e alimentado em um forno de eixo de redução, onde o hidrogênio é injetado para reduzir o minério a ferro metálico, gerando vapor de água como subproduto. Este ferro metálico, conhecido como ferro-esponja (DRI), é então comprimido em briquetes de ferro quente (HBI) para facilitar o manuseio e o transporte. Finalmente, os briquetes são fundidos em um forno elétrico a arco, onde ocorre a carburização e ajuste da composição do aço. A termodinâmica da redução do minério de ferro pelo hidrogênio envolve reações endotérmicas, necessitando de energia adicional para manter a temperatura de redução constante. A redução ocorre através de uma série de etapas, começando com a hematita (Fe2O3) que é convertida em magnetita (Fe3O4) e, finalmente, em ferro metálico, com a wüstita (Fe(1-x)O) como intermediário em temperaturas acima de 570°C. O diagrama de Baur-Glässner é utilizado para prever as condições de equilíbrio das reações de redução, indicando que temperaturas mais altas e baixos graus de oxidação do gás são favoráveis. Esta tecnologia representa um avanço significativo na produção de aço verde, oferecendo uma solução promissora para a redução das emissões de gases de efeito estufa.

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Green approach to ironmaking: Briquetting and hydrogen reduction of mill scale using novel binders

Cited by 2 publications

References 23 publications

Experimental and performance analysis of organic fraction of municipal solid waste in downdraft gasifier

Experimental and performance analysis of organic fraction of municipal solid waste in downdraft gasifier

Processo e termodinâmica da redução a hidrogênio do minério de ferro

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