大气压下甲烷火花放电制乙炔和合成气

张婧; 王东江; 张家良; 郭洪臣

大气压下甲烷火花放电制乙炔和合成气

1.
大连理工大学化工学院催化化学与工程系, 精细化工国家重点实验室, 辽宁大连 116024;
2.
大连理工大学物理与光电工程学院, 辽宁大连 116024

详细信息

通讯作者:
郭洪臣, 男, 教授, E-mail: hongchenguo@163.com; Tel: +86-411-84986120。

中图分类号: O646.9
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- 被引次数: 0
出版历程
- 收稿日期: 2014-09-09
- 修回日期: 2014-11-22
- 刊出日期: 2015-02-28

Preparation of acetylene and syngas by the atmospheric pressure spark discharge of methane

1.
State Key Laboratory of Fine Chemicals, Department of Catalytic Chemistry and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China;
2.
School of Physics and Optoelectronic Engineering, Dalian University of Technology, Dalian 116024, China

摘要

摘要: 用大气压下火花放电方法和发射光谱原位诊断技术, 对CH₄直接转化制乙炔和间接转化制合成气进行了研究, 并与介质阻挡放电进行了比较。结果表明, 火花放电具有能量效率高的突出优点, 能够高效地将CH₄活化成C原子、H原子和C₂等活泼物种。当CH₄单独进料时, 能得到以C₂H₂为主的烃类产物。当CH₄与CO₂和O₂共进料时, 能得到H₂/CO比值可调的合成气产物。在用火花放电转化CH₄和CO₂制合成气时, 添加O₂能够避免反应器的结炭问题, 反应温度只需225 ℃, 与常规催化法相比具有明显的低温优势。
- 甲烷 /
- 火花放电 /
- 二氧化碳 /
- 合成气 /
- 发射光谱
Abstract: The direct conversion of methane to acetylene and the indirect conversion of mathane to syngas were studied by using the atmospheric pressure spark discharge, and with the in-situ diagnosis of optical emission spectroscopy. The results were compared with the dielectric barrier discharge. Results show that, the spark discharge, having remarkable advantage of high energy efficiency, was able to easily activate the methane molecules into species such as C, H and C₂. C₂H₂ was formed as a major hydrocarbon product when methane was fed alone, while the syngas was formed with adjustable H₂/CO ratio when CO₂ and O₂ were co-fed with methane. It is worth of mention that, the addition of O₂ overcame completely the troublesome problem of reactor coking during the spark discharge of CH₄ and CO₂, the production of syngas was allowed to be carried out at a temperature as low as 225 ℃. Therefore, the new syngas preparation method is very attractive comparing with the traditional catalytic routes.
- methane /
- spark discharge /
- CO₂ /
- syngas /
- optical emission spectroscopy

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