臭氧氧化脱硝技术处理石化废气的应用
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摘要
为了净化处理重油催化裂化装置产生的含硝浓度较高的废气,经过方案比选决定采用臭氧氧化脱硝技术进行处理。介绍了臭氧氧化脱硝技术工作原理、影响因素以及在石化烟气脱硝系统中的应用和脱硝效果。实践表明,在典型废气温度条件下,臭氧氧化脱硝技术配合末端氨水清洗处理能够同时脱除废气中的NOx和硫化物,该技术具有脱硝效果好、经济性高、自动化程度高、反应可以在较低温度下进行等优势。
In order to purify the exhaust gas containing high concentration of nitrogen produced by the catalytic cracking unit of heavy oil, ozone-based denitration technology was adopted after the scheme comparison and selection. The working principle, influencing factors and application of denitrification system in flue gas and the effect of denitrification ware introduced. The detailed process of denitrification system and the treatment process of NOx-containing flue gas ware described. Application practices show that under the typical exhaust gas temperature,ozone oxidation denitrification technology can remove NOx and sulfide in the exhaust gas simultaneously with the terminal ammonia water cleaning treatment. This technology had the advantages of good denitrification effect, high economy and high degree of automation. In addition, the reaction could be carried out at lower temperatures.
In order to purify the exhaust gas containing high concentration of nitrogen produced by the catalytic cracking unit of heavy oil, ozone-based denitration technology was adopted after the scheme comparison and selection. The working principle, influencing factors and application of denitrification system in flue gas and the effect of denitrification ware introduced. The detailed process of denitrification system and the treatment process of NOx-containing flue gas ware described. Application practices show that under the typical exhaust gas temperature,ozone oxidation denitrification technology can remove NOx and sulfide in the exhaust gas simultaneously with the terminal ammonia water cleaning treatment. This technology had the advantages of good denitrification effect, high economy and high degree of automation. In addition, the reaction could be carried out at lower temperatures.
引文
[1]马双忱,苏敏,马京香,等.臭氧液相氧化同时脱硫脱硝实验研究[J].环境科学,2009,30(12):3461-3464.
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[3]Zhang J,Zhang R,Chen X,et al.Simultaneous removal of NO and SO2 from flue gas by ozone oxidation and NaOHabsorption[J].Industrial and Engineering Chemistry Research,2014(53):6450-6456.
[4]姜树栋,王智化,周俊虎,等.臭氧氧化烟气脱硝制硝酸的试验研究[J].燃烧科学与技术,2010,16(1):57-61.
[5]路平,王玉爽,黄志伟,等.臭氧法脱硫脱硝工艺设计[J].现代化工,2017,37(4):171-174.
[6]周杨,李彩亭,喻明娥,等.臭氧应用于烟气净化的研究进展[J].环境化学,2015,34(6):1116-1126.
[7]王智化,周俊虎,魏林生,等.用臭氧氧化技术同时脱除锅炉烟气中NOx及SO2的试验研究[J].中国电机工程学报,2007(11):1-5.
[8]钟晓伟,张旭斌,蔡旺锋,等.臭氧氧化结合氨法同时脱硫脱硝的实验研究[J].化学工程,2017,45(7):7-11.
[9]王智化,周俊虎,温正城,等.利用臭氧同时脱硫脱硝过程中NO的氧化机理研究[J].浙江大学学报(工学版),2007(5):765-769.
[10]代绍凯,徐文青,陶文亮,等.臭氧氧化法应用于燃煤烟气同时脱硫脱硝脱汞的实验研究[J].环境工程,2014,32(10):85-89.
[2]刘志龙.臭氧氧化法烟气脱硝初步研究[J].炼油技术与工程,2012,42(9):23-25.
[3]Zhang J,Zhang R,Chen X,et al.Simultaneous removal of NO and SO2 from flue gas by ozone oxidation and NaOHabsorption[J].Industrial and Engineering Chemistry Research,2014(53):6450-6456.
[4]姜树栋,王智化,周俊虎,等.臭氧氧化烟气脱硝制硝酸的试验研究[J].燃烧科学与技术,2010,16(1):57-61.
[5]路平,王玉爽,黄志伟,等.臭氧法脱硫脱硝工艺设计[J].现代化工,2017,37(4):171-174.
[6]周杨,李彩亭,喻明娥,等.臭氧应用于烟气净化的研究进展[J].环境化学,2015,34(6):1116-1126.
[7]王智化,周俊虎,魏林生,等.用臭氧氧化技术同时脱除锅炉烟气中NOx及SO2的试验研究[J].中国电机工程学报,2007(11):1-5.
[8]钟晓伟,张旭斌,蔡旺锋,等.臭氧氧化结合氨法同时脱硫脱硝的实验研究[J].化学工程,2017,45(7):7-11.
[9]王智化,周俊虎,温正城,等.利用臭氧同时脱硫脱硝过程中NO的氧化机理研究[J].浙江大学学报(工学版),2007(5):765-769.
[10]代绍凯,徐文青,陶文亮,等.臭氧氧化法应用于燃煤烟气同时脱硫脱硝脱汞的实验研究[J].环境工程,2014,32(10):85-89.