燃煤烟气脱硝技术研究进展
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摘要
分析了近年来中国的煤炭耗量及NO_x排放量,概述了NO_x的工业排放源,分别对传统烟气脱硝技术中的选择性催化还原法(SCR)、选择性非催化还原法(SNCR)、臭氧氧化吸收法以及新型烟气脱硝技术中的络合吸收法、光催化氧化法的原理、工艺流程、研究现状及发展前景等进行了具体论述;总结了目前脱硝市场上传统烟气脱硝技术的脱硝率、优缺点及应用现状等;对比了上述5种烟气脱硝技术的工艺特征及经济性,并指出了未来我国烟气脱硝技术的发展方向。
The coal consumption and NO_x emissions in recent years in China were analyzed.The emission sources of NO_x were summarized.The principles,technological processes,research status and development prospects of the selective catalytic reduction(SCR),the selective non-catalytic reduction(SNCR) and the ozone oxidation method of the traditional flue gas denitrification technologies and the complex absorption method,the photocatalytic oxidation method of the new flue gas denitrification technologies were discussed in details respectively.The denitrification rate,advantages and disadvantages and application status of traditional flue gas denitrification technology in the current denitrification market were summarized.The technological characteristics and economics of the above five technologies were compared and the future development direction of flue gas denitrification technology in China was also presented.
The coal consumption and NO_x emissions in recent years in China were analyzed.The emission sources of NO_x were summarized.The principles,technological processes,research status and development prospects of the selective catalytic reduction(SCR),the selective non-catalytic reduction(SNCR) and the ozone oxidation method of the traditional flue gas denitrification technologies and the complex absorption method,the photocatalytic oxidation method of the new flue gas denitrification technologies were discussed in details respectively.The denitrification rate,advantages and disadvantages and application status of traditional flue gas denitrification technology in the current denitrification market were summarized.The technological characteristics and economics of the above five technologies were compared and the future development direction of flue gas denitrification technology in China was also presented.
引文
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[29] 胡静.吸收光谱拓展对光催化氧化NO的性能影响研究[D].杭州:浙江大学,2017.
[30] 张效铭,程敢,张传祥.燃煤烟气氧化脱硫脱硝技术进展[J].应用化工,2018,47(2):375-379.
[2] 中华人民共和国国家统计局.中国统计年鉴[M].北京:中国统计出版社,2017.
[3] 杨加强,梅毅,王驰,等.湿法烟气脱硝技术现状及发展[J].化工进展,2017,36(2):695-704.
[4] 赵雪,程茜,侯俊先.脱硫脱硝行业2017年发展综述[J].中国环保产业,2018(7):10-24.
[5] 郝吉明.煤利用中的污染控制和净化技术[M].北京:科学出版社,2014:92.
[6] 杨延龙.火电厂氮氧化物减排及SCR烟气脱硝技术浅析[J].能源环境保护,2017,31(2):31-35.
[7] 中华人民共和国生态环境保护部.2015年环境统计年报[R].北京:中国环境出版社,2017.
[8] 史建勇.燃煤电站烟气脱硫脱硝技术成本效益分析[D].杭州:浙江大学,2015.
[9] 高翔.工业烟气污染防治可行技术案例汇编[M].北京:中国环境出版社,2016.
[10] 曹俊,傅敏,周林,等.SCR脱硝催化剂中毒的研究进展[J].应用化工,2018,47(2):380-385.
[11] Xiao X,Xiong S,Shi Y,et al.Effect of H2O and SO2 on the selective catalytic reduction of NO with NH3 over Ce/TiO2 catalyst:Mechanism and kinetic study[J].Journal of Physical Chemistry C,2016,120(2):1066-1076.
[12] Ye J,Wang X,Xing Z,et al.Preparation and characterization of CeO2-MoO3/TiO2 catalysts for selective catalytic reduction of NO with NH3[J].Aerosol and Air Quality Research,2017,17:2726-2734.
[13] Zha K,Cai S,Hu H,et al.In situ DRIFTs investigation of promotional effects of tungsten on MNOx-CeO2/meso-TiO2 catalysts for NOx reduction[J].Journal of Physical Chemistry C,2017,121(45):25243-25254.
[14] Jin Q,Shen Y,Zhu S.Praseodymium oxide modified CeO2/Al2O3 catalyst for selective catalytic reduction of NO by NH3[J].Chinese Journal of Chemistry,2016,34(12):1283-1290.
[15] 吴卫红,吴华,罗佳,等.SCR烟气脱硝催化剂再生研究进展[J].应用化工,2013,42(7):1304-1307.
[16] Yao T,Duan Y,Yang Z,et al.Experimental characterization of enhanced SNCR process with carbonaceous gas additives[J].Chemosphere,2017,177:149-156.
[17] Chen H,Chen D Z,Fan S,et al.SNCR De-NOx within a moderate temperature range using urea-spiked hydrazine hydrate as reductant[J].Chemosphere,2016,161:208-218.
[18] Hao J,Yu W,Lu P,et al.The effects of Na/K additives and flyash on NO reduction in a SNCR process[J].Chemosphere,2015,122:213-218.
[19] 陈永康.EDV脱硫+LoTOx臭氧氧化脱硝技术在催化裂化装置中的应用[J].硫酸工业,2017(5):27-30.
[20] Sun C,Zhao N,Wang H,et al.Simultaneous absorption of NOx and SO2 using magnesia slurry combined with ozone oxidation[J].Energy & Fuels,2015,29(5):3276-3283.
[21] Guo S,Lü L,Jia Z,et al.Simultaneous removal of SO2 and NOx with ammonia combined with gas-phase oxidation of NO using ozone[J].Chemical Industry & Chemical Engineering Quarterly,2015,21(2):305-310.
[22] 杨业,徐超群,朱燕群,等.臭氧氧化结合硫代硫酸钠溶液喷淋同时脱硫脱硝[J].化工学报,2016,67(5):2041-2047.
[23] 何飞强,邓先和,陈民.乙二胺四乙酸铁络合物湿法络合脱硝液的再生研究进展[J].化工进展,2018,37(2):737-743.
[24] 王菲.FeⅡEDTA络合法吸收NO气体实验研究[D].太原:中北大学,2015.
[25] 张玉,万方,周集体.硫酸盐和Fe(II)EDTA-NO/Fe(III)EDTA厌氧还原过程特性及微生物群落分析[J].环境科学,2017(11):4706-4714.
[26] Jun C,Jia W,Jun W,et al.A mass-transfer model of nitric oxide removal in a rotating drum biofilter coupled with FeII(EDTA) absorption[J].Industrial & Engineering Chemistry Research,2018,57:8144-8151.
[27] 杨微微.TiO2-rGO/ASC光催化剂用于烟气脱硝性能研究[D].青岛:中国海洋大学,2015.
[28] 张帅,阴强,吕家炜.TiO2基可见光响应型光催化材料的研究进展[J].东华理工大学学报:自然科学版,2018,41(1):94-100.
[29] 胡静.吸收光谱拓展对光催化氧化NO的性能影响研究[D].杭州:浙江大学,2017.
[30] 张效铭,程敢,张传祥.燃煤烟气氧化脱硫脱硝技术进展[J].应用化工,2018,47(2):375-379.
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