文献类型：期刊文献

英文题名：NOx Removal from Flue Gas Using an Ozone Advanced Oxidation Process with Injection of Low Concentration of Ethanol: Performance and Mechanism

作者：Han, Zhitao[1,2];Wang, Junming[1];Zou, Tianyu[1];Zhao, Dongsheng[1];Gao, Cong[1,2];Dong, Jingming[1,2];Pan, Xinxing[2,3]

机构：[1]Dalian Maritime Univ, Marine Engn Coll, Dalian 116026, Peoples R China;[2]Prov Engn Res Ctr Marine Internal Combust Engine, Dalian 116024, Peoples R China;[3]Guangdong Ocean Univ, Coll Ocean Engn, Zhanjiang 524088, Peoples R China

年份：2020

卷号：34

期号：2

起止页码：2080

外文期刊名：ENERGY & FUELS

收录：SCI-EXPANDED(收录号：WOS:000518215400097)、、WOS

基金：This work was supported by the National Natural Science Foundation of China (grants 51779024), and the Fundamental Research Funds for the Central Universities (grants 3132019032 and 3132019330).

语种：英文

外文关键词：Drops - Esters - Ethanol - Flue gases - Flues - Gas chromatography - Mass spectrometry - Nitric acid - Oxidation - Ozone

外文摘要：Effects of ethanol injection on NOx removal performance in an ozone advanced oxidation process were investigated based on a scale-up reaction system. Experimental results showed that the introduction of ethanol in simulated flue gas could enhance NOx removal performance greatly in the O-3-ethanol-NOx system. With an initial NO concentration of 400 ppm in flue gas at 150 degrees C, the injection of 200 ppm O(3 )could oxidize approximately half of NO into NO2. When further introducing -150 ppm ethanol vapor in flue gas, the outlet NO concentration would drop sharply to similar to 68 ppm while outlet NO2 concentration would drop down to similar to 165 ppm at the same time. This enhancement effect was ascribed to a synergistic reaction between O-3, ethanol, and NOx in the gas phase. The gas reaction products were analyzed by using gas chromatography-mass spectrometry, and some kinds of nitro-compounds, such as nitroso methane, nitromethane, nitric acid methyl ester, and nitric acid ethyl ester, had been found. It is implied that some complex reactions might occur between ethanol and O-3 at the presence of NOx in which a large number of organic radicals and hydroxyl radicals had been produced. In addition, the effects of key operating parameters on NOx removal performance were investigated through comparing the changes in the NQ concentration between O-3-NOx and O-3-ethanol-NOx systems, and the related reaction mechanism had also been discussed.