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强电离放电脱除NO的化学反应动力学模拟

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李萍, 依成武, 李文浩, 李珏, 王晶. 强电离放电脱除NO的化学反应动力学模拟[J]. 环境工程学报, 2017, 11(9): 5078-5083. doi: 10.12030/j.cjee.201609250
引用本文: 李萍, 依成武, 李文浩, 李珏, 王晶. 强电离放电脱除NO的化学反应动力学模拟[J]. 环境工程学报, 2017, 11(9): 5078-5083. doi: 10.12030/j.cjee.201609250
shu
LI Ping, YI Chengwu, LI Wenhao, LI Jue, WANG Jing. Chemical reaction kinetics simulation of NO removal by strong ionization discharge[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 5078-5083. doi: 10.12030/j.cjee.201609250
Citation: LI Ping, YI Chengwu, LI Wenhao, LI Jue, WANG Jing. Chemical reaction kinetics simulation of NO removal by strong ionization discharge[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 5078-5083. doi: 10.12030/j.cjee.201609250
shu

强电离放电脱除NO的化学反应动力学模拟

  • 1.

    江苏大学环境与安全工程学院, 镇江 212013

  • 基金项目:

    国家自然科学基金资助项目（51278229）

    江苏省六大人才峰会基金资助项目（JNHB-018）

  • 中图分类号: X511

Chemical reaction kinetics simulation of NO removal by strong ionization discharge

  • 1.

    School of Environmental and Safety Engineering, Jiangsu University, Zhenjiang 212013, China

  • Fund Project:

  • 摘要: 强电离放电脱除NO是集化学、物理学和环境工程学为一体的交叉学科，其脱除过程本质上是等离子体中进行的一系列微观过程，难以通过实验进行直接研究。故通过建立强电离放电脱除模拟烟气中NO的化学模型并运用MATLAB对其进行数值模拟以探讨NO的去除机理。数值模拟结果表明，在800 μs内产生大量·O和·OH，而仅产生少量·N，由此可知NO的去除主要是通过与·O和·OH的氧化反应生成HNO3实现的，在脱除过程中NO先被氧化成NO2，再进一步被转化成HNO3。同时，通过实验验证了所建立模型的合理性。实验结果表明：随着NO初始浓度的增加，NO脱除效率逐渐下降；随着含氧量的增加，NO脱除效率显著增大。
    Abstract: The removal of NO by strong ionization discharge is an interdisciplinary subject, which involves chemistry, physics and environmental engineering. The removal process is a series of essentially micro process. It is difficult to research through experiments directly. Therefore, a chemical model was developed to obtain NO removal mechanism by using MATLAB to carry out numerical simulation. Results obtained from the model indicated that ·O and ·OH were produced in a large amount at 800 μs, while the amount of ·N was rather small. Thus, the removal of NO was mainly achieved by reacting with ·O and ·OH. In the process of removal, NO was firstly oxidized into NO2 and eventually converted into HNO3.Concurrently, the validity of the model was verified by experiments. Experimental results showed that the NO removal rate decreased gradually with the increase of NO initial concentration and increased significantly with the increase of oxygen content.
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  • [1] GAFFNEY J S, MARLEY N A. The impacts of combustion emissions on air quality and climate from coal to biofuels and beyond[J]. Atmospheric Environment, 2009, 43(1):23-36
    [2] 赵静, 严金英, 邱婧伟, 等. NaClO2/NaClO复合吸收液同时脱硫脱硝[J]. 环境工程学报, 2012, 6(10):3684-3688
    [3] MOK Y S, NAM C M, CHO M H, et al. Decomposition of volatile organic compounds and nitric oxide by non-thermal plasma discharge processes[J]. IEEE Transactions on Plasma Science, 2002, 30(1):408-416
    [4] CHANG J S, URASHIMA K, TONG Y X, et al. Simultaneous removal of NOx and SO2 from coal boiler flue gases by DC corona discharge ammonia radical shower systems:Pilot plant tests[J]. Journal of Electrostatics, 2003, 57(3):313-323
    [5] KIM Y, KANG W S, PARK J M, et al. Experimental and numerical analysis of streamers in pulsed corona and dielectric barrier discharge[J]. IEEE Transactions on Plasma Science, 2004, 32(1):18-24
    [6] DONG L M, LAN S, YANG J X, et al. Plasma chemical reaction for nitric oxide and sulfur dioxide removal in corona discharge reactor[C]. Electrical Insulation and Dielectric Phenomena, 2003 Report. Conference on LEEE. 2003:440-443
    [7] RAJANIKANTH B S, SUSHMA B R. Injection of N-radicals into diesel engine exhaust treated by plasma for improved NOx removal:A feasibility study[J]. Plasma Science & Technology, 2006, 8(2):202-206
    [8] MORENO S H, PACHECO M P, PACHECO-SOTELO J, et al. Modeling and experimental study on nitric oxide treatment using dielectric barrier discharge[J]. IEEE Transactions on Plasma Science, 2007, 35(5):1533-1540
    [9] 张文豪, 杜传进, 王伟. 低温等离子体技术净化柴油机尾气NOx的化学反应动力学模拟研究[J]. 拖拉机与农用运输车, 2008, 35(1):79-81
    [10] 孙永明, 夏文虎, 张勤. 低温等离子体技术净化船舶柴油机尾气的化学反应动力学模拟[J]. 上海海事大学学报, 2015, 36(2):79-83
    [11] SATHIAMOORTHY G, KALYANA S, FINNEY W C,et al. Chemical reaction kinetics and reactor modeling of NOx removal in a pulsed streamer corona discharge reactor[J]. Industrial & Engineering Chemistry Research, 1999, 38(5):1844-1855
    [12] WANG Z, ZHOU J, ZHU Y, et al. Simultaneous removal of NOx, SO2 and Hg in nitrogen flow in a narrow reactor by ozone injection:Experimental results[J]. Fuel Processing Technology, 2007, 88(8):817-823
    [13] MÄTZING H. Chemical kinetics of flue gas cleaning by irradiation with electrons[J]. Advances in Chemical Physics, 2007,80:315-402
    [14] TOKUNAGA O, SUZUKI N. Radiation chemical reactions in NOx and SO2, removals from flue gas[J]. Radiation Physics & Chemistry, 1984, 24(1):145-165
    [15] HERRON J T, GREEN D S. Chemical kinetics database and predictive schemes for non-thermal humid air plasma chemistry. Part Ⅱ. Neutral species reactions[J]. Plasma Chemistry & Plasma Processing, 2001, 21(3):459-481
    [16] 李文绚, 金保侠. 气体动力学计算方法[M]. 北京:机械工业出版社, 1990:14-32
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  • 收稿日期:  2016-12-19
  • 刊出日期:  2017-08-26

强电离放电脱除NO的化学反应动力学模拟

  • 1. 江苏大学环境与安全工程学院, 镇江 212013
  • 收稿日期:  2016-12-19
基金项目:

国家自然科学基金资助项目（51278229）

江苏省六大人才峰会基金资助项目（JNHB-018）

摘要: 强电离放电脱除NO是集化学、物理学和环境工程学为一体的交叉学科，其脱除过程本质上是等离子体中进行的一系列微观过程，难以通过实验进行直接研究。故通过建立强电离放电脱除模拟烟气中NO的化学模型并运用MATLAB对其进行数值模拟以探讨NO的去除机理。数值模拟结果表明，在800 μs内产生大量·O和·OH，而仅产生少量·N，由此可知NO的去除主要是通过与·O和·OH的氧化反应生成HNO3实现的，在脱除过程中NO先被氧化成NO2，再进一步被转化成HNO3。同时，通过实验验证了所建立模型的合理性。实验结果表明：随着NO初始浓度的增加，NO脱除效率逐渐下降；随着含氧量的增加，NO脱除效率显著增大。

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