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三聚氰酸选择性非催化还原脱硝特性的实验研究

DOI: 10.13334/j.0258-8013.pcsee.2014.23.008, PP. 3892-3898

Keywords: 三聚氰酸,选择性非催化还原,NO,CO,H2O

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Abstract:

采用立式管式炉实验系统研究了三聚氰酸选择性非催化还原脱硝特性,探索了温度、O2浓度、停留时间、三聚氰酸与NO摩尔比、NO初始浓度等反应参数以及CO和H2O对三聚氰酸脱硝特性的影响。实验得出适宜的脱硝反应参数:反应温度约为950℃,温度窗口为876~1150℃,停留时间为1.1~1.2s,摩尔比为0.5,O2浓度为2%~3%。较高的NO初始浓度可以获得较高的脱硝效率。典型工况参数下,三聚氰酸在900℃时取得最大脱硝效率83.1%,大于900℃后,脱硝效率下降幅度较小,与氨气和尿素选择性非催化还原相比,具有更好的高温脱硝特性。CO和H2O的加入可以提高较低温度时的脱硝效率,拓宽温度窗口,使其向低温方向移动,较适宜的CO浓度约为200μL/L,H2O浓度约为5%。

References

[1]  Graus W H J,Worrel E.Effect of SO 2 and NO x control on energy-efficiency power generation[J].Energy Policy,2007,35(7):3898-3908.
[2]  陈慧,陈德珍,王娜.中温条件下烟气De-NO x 技术的研究现状与发展[J].中国电机工程学报,2013,33(20):17-27.
[3]  Chen Hui,Chen Dezhen,Wang Na.The State-of-art and development of moderate-temperature-based flue gas DeNO x technology[J].Proceedings of the CSEE,2013,33(20):17-27(in Chinese).
[4]  姜烨,高翔,吴卫红,等.选择性催化还原脱硝催化剂失活研究综述[J].中国电机工程学报,2013,33(14):18-31.
[5]  Jiang Ye,Gao Xiang,Wu Weihong,et al.Review of the deactivation of selective catalytic reduction DeNO x catalysts[J].Proceedings of the CSEE,2013,33(14):18-31(in Chinese).
[6]  吕洪坤,杨卫娟,周志军,等.选择性非催化还原法在电站锅炉上的应用[J].中国电机工程学报,2008,28(23):14-19.
[7]  Lü Hongkun,Yang Weijuan,Zhou Zhijun,et al.Application of selective non-catalytic reduction on a power plant boiler[J].Proceedings of the CSEE,2008,28(23):14-19(in Chinese).
[8]  Kim H Y,Baek S W,Lee C Y.Effects of hybrid reburning system with SNCR and air staging on NO x reduction and thermal characteristics in oxygen-enhanced combustion [J].Combustion Science and Technology,2009,181(10):1289-1309.
[9]  Yang W,Chen Z C,Zhou Z,et al.Cost-efficient nitrogen oxides control by a hybrid selective non-catalytic reduction and selective catalytic reduction system on a utility boiler[J].Environmental Engineering Science,2011,28(5):341-348.
[10]  曹庆喜,吴少华,刘辉,等.NH 3 选择性非催化还原NO的实验研究[J].热能动力工程,2010,25(1):87-90.
[11]  Cao Qingxi,Wu Shaohua,Zhou Zhijun,et al.Experimental study on the ammonia based SNCR process[J].Journal of engineering for thermal energy and power,2010,25(1):87-90(in Chinese).
[12]  沈伯雄,刘亭,韩永富.选择性非催化还原脱除氮氧化物的影响因素分析[J].中国电机工程学报,2008,28(23):53-59.
[13]  Shen Boxiong,Liu Ting,Han Yongfu.Analysis on impact factors for removal of NO x with selective non-catalytic reduction[J].Proceedings of the CSEE,2008,28(23):53-59(in Chinese).
[14]  李辉,韩奎华,刘洪涛,等.O 2 /CO 2 气氛下选择性非催化还原脱硝特性实验研究[J].工程热物理学报,2013,34(9):1771-1774.
[15]  Li Hui,Han Kuihua,Liu Hongtao,et al.Experimental study on De-NO x characteristics of selective non-catalytic reduction in O 2 /CO 2 atmosphere[J].Journal of engineering thermophysics,2013,34(9):1771-1774(in Chinese).
[16]  吕洪坤,杨卫娟,周俊虎,等.选择性非催化还原反应的实验研究与机理分析[J].电站系统工程,2011,27(2):4-7.
[17]  Lü Hongkun,Yang Weijuan,Zhou Junhu,et al.Experimental study and mechanism analysis on selective non-catalytic reduction reactions[J].Power system engineering,2011,27(2):4-7(in Chinese).
[18]  Lee G W,Shon B H,Yoo J G,et al.The influence of mixing between NH 3 and NO for a De-NO x reaction in the SNCR process[J].Journal of Industrial and Engineering Chemistry,2008,14(4):457-467.
[19]  Rota R,Antos D,Zanoelo E F,et al.Experimental and modeling analysis of the NOxOUT process[J].Chemical Engineering Science,2002,57(1):27-38.
[20]  Gasnot L,Dao D Q,Pauwels J F.Experimental and kinetic study of the effect of additives on the ammonia based SNCR process in low temperature conditions [J].Energy & Fuels,2012,26(5):2837-2849.
[21]  Javed M T,Nimmo W,Gibbs B M.Experimental and modeling study of the effect of CO and H 2 on the urea DeNO x process in a 150kW laboratory reactor [J].Chemosphere,2008,70(6):1059-1067.
[22]  曹庆喜,吴少华,刘辉,等.添加剂对选择性非催化还原脱硝及NH 3 氧化影响的实验研究[J].中国电机工程学报,2009,29(11):21-25.
[23]  Cao Qingxi,Wu Shaohua,Liu Hui,et al.Experimental study of the influences of additives on selective non- catalytic reduction process and ammonia oxidation [J].Proceedings of the CSEE,2009,29(11):21-25(in Chinese).
[24]  韩奎华,路春美,王永征,等.选择性非催化还原脱硝特性试验研究[J].中国电机工程学报,2008,28(14):80-85.
[25]  Han Kuihua,Lu Chunmei,Wang Yongzheng,et al.Experimental study on De-NO x characteristics of selective non-catalytic reduction[J].Proceedings of the CSEE,2008,28(14):80-85(in Chinese).
[26]  吕洪坤,杨卫娟,周俊虎,等.水蒸气对选择性非催化还原反应影响的实验研究[J].中国电机工程学报,2010,30(14):50-55.
[27]  Lü Hongkun,Yang Weijuan,Zhou Junhu,et al.Investigation on effects of water vapor on selective non-catalytic reduction of NO x [J].Proceedings of the CSEE,2010,30(14):50-55(in Chinese).
[28]  Perry R A,Siebers D L.Rapid reduction of nitrogen oxides in exhaust gas streams[J].Nature,1986,324(2):657-658.
[29]  Glarborg P,Kristensen P G,Jensen S H.A flow reactor study of HNCO oxidation chemistry[J].Combustion and Flame,1994,98(3):241-258.
[30]  沈伯雄,韩永富,刘亭.氨选择性非催化还原烟气脱硝研究进展[J].化工进展,2008,27(9):1323-1327.
[31]  Shen Boxiongz,Han Yongfu,Liu Ting.Development of flue gas denitrification using NH 3 selective non-catalytic reduction[J].Chemical Industry and Engineering Progress,2008,27(9):1323-1327(in Chinese).
[32]  路涛,贾双燕,李晓芸.关于烟气脱硝的SNCR工艺及其技术经济分析[J].现代电力,2004,21(1):17-22.
[33]  Lu Tao,Jia Shuangyan,Li Xiaoyun.Technical and economic analysis about the SNCR process of flue gas denitration[J].Modern Electric Power,2004,21(1):17-22(in Chinese).
[34]  Wicke B G,Grady K A,Ratcliffe J W.Cyanuric acid+nitric oxide reaction at 700 ℃ and the effects of oxygen[J].Combustion and flame,1989,78(2):249-255.
[35]  Siebers D L,Caton J A.Removal of nitric oxide from exhaust gas with cyanuric acid[J].Combustion and Flame,1990,79(1):31-46.
[36]  Wicke B G,Grady K A,Ratcliffe J W.Limitations on the rapid reduction of nitrogen oxides in exhaust gas streams [J].Nature,1989,3385(6):492-493.
[37]  Bowman C T.Control of combustion generated nitrogen oxide emissions:technology driven by regulation[C]// Symposium (International) on Combustion,1992,24(1):859-878.
[38]  Caton J A,Zhiyong X.The selective non-catalytic removal (SNCR) of nitric oxides from engine exhaust streams:comparison of three processes[J].Journal of Engineering for Gas Turbines and Power,2004,126(2):234-240.
[39]  Javed M T,Irfan N,Gibbs B M.Control of combustion- generated nitrogen oxides by selective non-catalytic reduction[J].Journal of Environmental Management,2007,83(3):251-289.
[40]  Niu S,Han K,Lu C.An experimental study on the effect of operating parameters and sodium additive on the NO x OUT Process[J].Process Safety and Environmental Protection,2011,89(2):121-126.
[41]  仲蕾,宋蔷,黄乾泽,等.选择性非催化还原脱硝温度窗口内尿素液滴的蒸发和转化特性[J].中国电机工程学报,2013,33(26):21-26.
[42]  Zhong Lei,Song Qiang,Huang Qianze,et al.Evaporation and conversion characterizations of urea-water-solution droplets within the temperature window for SNCR DeNO x [J].Proceedings of the CSEE,2013,33(26):21-26(in Chinese).
[43]  吕洪坤,杨卫娟,周俊虎,等.尿素溶液高温热分解特性的实验研究[J].中国电机工程学报,2010,30(17):35-40.
[44]  Lü Hongkun,Yang Weijuan,Zhou Junhu,et al.Investigation on thermal decomposition characteristics of urea solution under high temperature[J].Proceedings of the CSEE,2010,30(17):35-40(in Chinese).
[45]  李可夫,吴少华,李振中,等.以尿素为还原剂的SNCR过程的中试试验研究[J].中国电机工程学报,2006,26(25):97-101.
[46]  Li Kefu,Wu Shaohua,Li Zhenzhong,et al.Pilot-scale experimental study of NO x OUT Process[J].Proceedings of the CSEE,2006,26(25):97-101(in Chinese).
[47]  Rota R,Antos D,Zanoelo E F,et al.Experimental and modeling analysis of the NO x OUT process[J].Chemical Engineering Science,2002,57(1):27-38.
[48]  Guo X,Wei X,Li S.Detailed modeling of the effects of K/Na additives on the thermal DeNO x process[J].Energy & Fuels,2013,27(1):421-429.
[49]  Han K,Lu C.Kinetic model and simulation of promoted selective non-catalytic reduction by sodium carbonate [J].Chinese Journal of Chemical Engineering,2007,15(4):512-519.
[50]  Wu S,Cao Q,Liu H,et al.Experimental and modeling study of the effects of gas additives on the thermal DeNO x process[J].Chinese Journal of Chemical Engineering,2010,18(1):143-148.

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