Research review of non-thermal plasma technology for ammonia synthesis

doi:10.16085/j.issn.1000-6613.2017-1303

Abstract

Abstract: The ammonia industry has a great influence on the process of human development. However,the traditional ammonia synthesis needs to be carried out under high temperature and pressure. Therefore,reducing the reaction temperature and pressure has been a hot research topic in this field. Compared with the traditional method,ammonia synthesis using plasma has the advantages of mild reaction conditions,cheap raw materials and non-emission of greenhouse gases,therefore this technology is considered to have great potential. In this paper,the present situation of ammonia synthesis by plasma was reviewed,including using different discharge methods,different reactors,different discharge parameter and feed gas ratio conditions. Meanwhile,the effect of catalysts on the ammonia synthesis with plasma was summarized and discussed. According to current achievements of ammonia synthesis with plasma technology,it is considered that the development directions are as follows:the use of H₂O and CH₄ as hydrogen sources;the development of precious metal catalysts such as ruthenium-based catalysts;the design and manufacture of reactors suitable for synthesis ammonia with plasma and the matching of high-power power equipment.

Key words: plasma technology, dielectric barrier discharge, ammonia synthesis, catalyst, optimization, reactors

摘要： 合成氨工业极大地影响着人类的发展进程，但是传统的合成氨过程需要在高温高压条件下进行。因此，如何降低反应温度和压力一直是该领域的研究热点。等离子体合成氨技术相比传统合成氨技术具有反应条件温和、原料廉价易得、不排放温室气体等优点，这种技术被认为具有很大的发展潜力。本文综述了等离子合成氨技术的发展及近期取得的成果，包括不同放电方式、不同反应器、不同放电参数和进气比例等参数条件对合成氨效果的影响，并对催化剂在等离子体合成氨技术中的作用进行了总结和讨论。根据目前等离子体合成氨技术取得的成果，指出其发展方向有以下几点：使用H₂O和CH₄作为氢源；开发钌基催化剂等贵金属催化剂；设计和制造适合于等离子体合成氨技术的反应器；匹配大功率的电源设备。

关键词: 等离子体技术, 介质阻挡放电, 合成氨, 催化剂, 优化, 反应器

CLC Number:

TQ113.26

FENG Jiayu, NING Ping, SUN Xin, WANG Chi, LI Kunlin, LI Kai. Research review of non-thermal plasma technology for ammonia synthesis[J]. Chemical Industry and Engineering Progress, 2018, 37(05): 1968-1977.

冯嘉予, 宁平, 孙鑫, 王驰, 李坤林, 李凯. 等离子体合成氨技术研究进展[J]. 化工进展, 2018, 37(05): 1968-1977.

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