Study on deterioration behavior of coke during gasification

IF 0.9 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING

Metallurgical Research & Technology Pub Date : 2023-01-01 DOI:10.1051/metal/2023078

Ji Wu, Cai Liang, Xiushi Gan, Minghui Xie, Zhe Jiang, Zhenxing Zhao, Xu Wang

引用次数: 0

Abstract

The reaction temperature and time on the carbon loss of coke during CO 2 gasification were studied. The results showed that there were significant correlations among the reactivity, pulverization rate, and wear resistance. The degree of variation in pulverization rate and wear resistance revealed that coke reactivity changed dramatically as reaction temperature rose. The temperature was also the key factor for coke graphitization. The evolution of the inorganic minerals and pore wall microstructure was investigated after coke gasification. The migration and accumulation of inorganic minerals, such as mullite, calcium ferrite, and iron oxide in coke, were discovered to catalyze the deterioration of the coke pore wall, resulting in the coke powder formation. The graphitization degree of the skin layer was greater than that of the core after high-temperature reactions, which accelerated skin layer separation from the core.

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焦炭在气化过程中的变质行为研究

研究了反应温度和反应时间对co2气化过程中焦炭炭损的影响。结果表明，反应性、粉碎率和耐磨性之间存在显著的相关关系。粉碎率和耐磨性的变化程度表明，随着反应温度的升高，焦炭的反应性发生了显著变化。温度也是焦炭石墨化的关键因素。研究了焦炭气化过程中无机矿物和孔壁微观结构的演变。发现莫来石、铁酸钙、氧化铁等无机矿物在焦炭中的迁移积累，催化焦炭孔壁变质，形成焦粉。高温反应后，皮层石墨化程度大于芯层石墨化程度，加速了皮层与芯的分离。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Metallurgical Research & Technology METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

1.70

自引率

9.10%

发文量

审稿时长

4.4 months

期刊介绍： Metallurgical Research and Technology (MRT) is a peer-reviewed bi-monthly journal publishing original high-quality research papers in areas ranging from process metallurgy to metal product properties and applications of ferrous and non-ferrous metals and alloys, including light-metals. It covers also the materials involved in the metal processing as ores, refractories and slags. The journal is listed in the citation index Web of Science and has an Impact Factor. It is highly concerned by the technological innovation as a support of the metallurgical industry at a time when it has to tackle severe challenges like energy, raw materials, sustainability, environment... Strengthening and enhancing the dialogue between science and industry is at the heart of the scope of MRT. This is why it welcomes manuscripts focusing on industrial practice, as well as basic metallurgical knowledge or review articles.