烧焦
tar(计算)
催化作用
合成气
热解
化学工程
甲苯
催化重整
材料科学
碳纤维
化学
废物管理
有机化学
复合数
复合材料
程序设计语言
工程类
计算机科学
作者
Yafei Wang,Rui Shan,Jing Gu,Jun Zhang,Haoran Yuan,Yong Chen
出处
期刊:Fuel
[Elsevier]
日期:2020-11-01
卷期号:279: 118494-118494
被引量:39
标识
DOI:10.1016/j.fuel.2020.118494
摘要
Pyrolytic char is widely used for tar removal due to its cost-effective and eco-friendly. In this work, the waste municipal sludge is selected to produce the composite catalyst with transition metal Fe/Ni, and the as-synthesized catalyst was used in the catalytic cracking of the tar model compound toluene by a laboratory-scale plant. The toluene conversion and the molar ratios of CO, H2, CO2, CH4 and C2H4 in the generated gas were investigated. Results show that municipal sludge char-based catalysts are more likely to produce H2-rich syngas (the molar ratio of syngas > 75%), and the molar ratio of H2 can reach 73.3% under optimal conditions. The Fe-Ni bimetallic catalyst combines the advantages of different metal elements to make the catalyst performance more stable. Meanwhile, the effects of residence time (τ) and steam-to-carbon ratio (S/C) on the conversion rate were studied. As a result, the excessive residence time or steam-to-carbon ratio will have no more positive effect on the performance of the catalyst. Ultimately, the catalyst life test of 8 h was carried out, the results showed that cost-effective and green waste municipal sludge char-supported Fe/Ni catalysts in this work could be used for removal of the tar heavy component toluene.
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