
1. 哈尔滨工程大学动力与能源工程学院
2. 重庆交通大学航运与船舶工程学院
Published:2025
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张天鹏, 席鸿远, 周松, et al. Mn-Ce-Ox低温催化氧化NO及促进船舶SCR效率的研究[J]. 2025, (4): 349-356.
张天鹏, 席鸿远, 周松, et al. Mn-Ce-Ox低温催化氧化NO及促进船舶SCR效率的研究[J]. 2025, (4): 349-356. DOI: 10.16236/j.cnki.nrjxb.202504040.
甲烷(CH
4
)催化氧化可以有效处理液化天然气(LNG)船舶CH
4
逃逸,但也催化氧化了尾气中的NO.为了研究LNG船舶CH
4
氧化装置对选择性催化还原(SCR)系统的影响,基于自行搭建的脱硝试验平台,构建基于锰铈氧化物(Mn-Ce-O
x
)催化剂与商业钒基催化剂的联合催化反应体系,研究了反应温度、催化剂种类、空速和杂质气体干扰对Mn-Ce-O
x
催化氧化NO和促进催化还原NO
x
的影响.结果表明:NO体积分数从0.05%升到0.20%、O
2
体积分数从17.00%降到5.00%时,NO氧化效率小幅度降低.在脱硝效率方面,相同条件下Mn-Ce-O
x
大幅度促进了SCR的脱硝效率,在反应温度为180℃、空速为21 356 h
-1
且摩尔比n(NO)/n(NH
3
)为1.0∶1.1时脱硝效率可以达到86.80%,并可以将整体催化剂体积降低50.7%,进而降低SCR系统的占用空间.
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Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, China,Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, China,Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, China,Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, China,Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, China,Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, China,Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, China,Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, China,Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, China."Fast SCR" reaction over Sm-modified MnO x -TiO 2 for promoting reduction of NO x with NH 3[J].Applied Catalysis A, General,2018.
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