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Simultaneous removal of SO2 and NOn Xn with ammonia absorbent in a packed column

机译:在填充塔中用氨吸收剂同时去除SO2和NOn Xn

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摘要

Catalytic oxidation of NO followed by simultaneous removal of SO2 and NO X with ammonia is a promising method for control of coal-fired flue gas pollutants. We investigated simultaneous absorption of SO2 and NO X in a packed column with ammonia, and found that SO2 and NO X could promote absorption with each other in the process of simultaneous removal SO2 and NO X . The removal efficiency of SO2 and NO X was, respectively, about 98% and 70.9% at pH 5.5, temperature 323.15 K, SO2 concentration 1,800×10−6, NO X concentration 400×10−6 and ({{m_{NO_2 } } mathord{left/ {vphantom {{m_{NO_2 } } {m_{NO} }}} right. kern-nulldelimiterspace} {m_{NO} }}) in our experimental system. The experimental results also show that the formation of sulfite oxidized by reacting with dissolved NO2 and the molar ratio of sulfite to total sulfur is more than 0.8 in the solution. Accordingly, the energy consumption for sulfite oxidation would be greatly reduced in the process of simultaneous desulfurization and denitrification with ammonia.
机译:NO的催化氧化,然后同时用氨气去除SO2和NO X是控制燃煤烟气污染物的一种有前途的方法。我们研究了氨气在填充塔中同时吸收SO2和NO X的结果,发现SO2和NO X在同时去除SO2和NO X的过程中可以互相促进吸收。在pH 5.5,温度323.15 K,SO2浓度为1800×10-6,NO X浓度为400×10-6和({{m_ {NO_2}}下,SO 2和NO X的去除效率分别约为98%和70.9%。 } mathord {left / {vphantom {{m_ {NO_2}} {m_ {NO}}}}右。kern-nulldelimiterspace} {m_ {NO}}})。实验结果还表明,通过与溶解的NO2反应而氧化的亚硫酸盐形成,溶液中亚硫酸盐与总硫的摩尔比大于0.8。因此,在同时用氨进行脱硫和反硝化的过程中,亚硫酸盐氧化的能量消耗将大大降低。

著录项

  • 来源
    《Korean Journal of Chemical Engineering》 |2013年第9期|1735-1740|共6页
  • 作者单位

    School of Architecture Engineering Anhui University of Technology">(1);

    School of Architecture Engineering Anhui University of Technology">(1);

    School of Architecture Engineering Anhui University of Technology">(1);

    School of Architecture Engineering Anhui University of Technology">(1);

    School of Chemical Engineering Nanjing University of Science and Technology">(2);

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-18 00:01:25

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