Tianjin Key Laboratory of Clean Energy and Pollutant Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin300401, China.
Tianjin Key Laboratory of Clean Energy and Pollutant Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin300401, China.
J Environ Sci (China). 2021 Mar;101:49-71. doi: 10.1016/j.jes.2020.08.004. Epub 2020 Aug 21.
Due to the increasingly strict emission standards of NOx on various industries, many traditional flue gas treatment methods have been gradually improved. Except for selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR) methods to remove NOx from flue gas, theoxidation method is paying more attention to NOx removal now because of the potential to simultaneously remove multiple pollutants from flue gas. This paper summarizes the efficiency, reaction conditions, effect factors, and reaction mechanism of NO oxidation from the aspects of liquid-phase oxidation, gas-phase oxidation, plasma technology, and catalytic oxidation. The effects of free radicals and active components of catalysts on NO oxidation and the combination of various oxidation methods are discussed in detail. The advantages and disadvantages of different oxidation methods are summarized, and the suggestions for future research on NO oxidation are put forward at the end. The review on the NO removal by oxidation methods can provide new ideas for future studies on the NO removal from flue gas.
由于对各行业氮氧化物 (NOx) 的排放要求越来越严格，许多传统的烟气处理方法逐渐得到改进。除了选择性催化还原 (SCR) 和选择性非催化还原 (SNCR) 方法用于从烟道气中去除 NOx 之外，氧化法由于具有同时去除烟道气中多种污染物的潜力，现在越来越受到关注。本文从液相氧化、气相氧化、等离子体技术和催化氧化等方面总结了 NO 氧化的效率、反应条件、影响因素和反应机理。详细讨论了自由基和催化剂活性成分对 NO 氧化的影响以及各种氧化方法的结合。总结了不同氧化方法的优缺点，并对 NO 氧化的未来研究提出了建议。对氧化法去除 NO 的综述可为未来烟道气中去除 NO 的研究提供新的思路。
