Study on Steam Reforming of Tar in Hot Coke Oven Gas for Hydrogen Production

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• 作者：Huaqing Xie ; Jianrong Zhang ; Qingbo Yu ; Zongliang Zuo ; Jialin Liu ; Qin Qin
• 刊名：Energy & Fuels
• 出版年：2016
• 出版时间：March 17, 2016
• 年：2016
• 卷：30
• 期：3
• 页码：2336-2344
• 全文大小：564K
• ISSN：1520-5029

文摘

Thermodynamic analysis and experiments of the steam reforming process of 1-methylnaphthalene as the tar model compound from coke oven gas (COG) were performed in this paper. In the thermodynamic analysis, as the temperature and steam/carbon (S/C) ratio rose, the hydrogen yield first increased and then flattened out yet with the compound completely converted and almost no coke deposition formed. In the experiments using a Ni/Mg catalyst with Ca₁₂Al₁₄O₃₃ as a carrier, with the increases of the temperature and S/C ratio and the decrease of the methane-equivalent gas hourly space velocity (G_C1HSV), the reforming result for hydrogen production became better gradually. After the temperature and S/C ratio increased to 800 °C and 12:1, respectively, and the G_C1HSV decreased to 145 h^–1, the hydrogen yield and carbon conversion could reach over 90% and 97%, respectively, even very close to the thermodynamic values. Additionally, the catalytic stability and resistance to coke formation of the used catalyst also improved in such conditions.