[1]姜业正,吴昊,雒飞,等.添加湿空气对湿法脱硫净烟气中细颗粒物脱除性能[J].东南大学学报(自然科学版),2016,46(1):81-86.[doi:10.3969/j.issn.1001-0505.2016.01.014]
 Jiang Yezheng,Wu Hao,Luo Fei,et al.Performance study on fine particle removal from wet desulfurized flue gas by adding humid air[J].Journal of Southeast University (Natural Science Edition),2016,46(1):81-86.[doi:10.3969/j.issn.1001-0505.2016.01.014]
点击复制

添加湿空气对湿法脱硫净烟气中细颗粒物脱除性能()
分享到:

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
46
期数:
2016年第1期
页码:
81-86
栏目:
环境科学与工程
出版日期:
2016-01-20

文章信息/Info

Title:
Performance study on fine particle removal from wet desulfurized flue gas by adding humid air
作者:
姜业正吴昊雒飞杨林军
东南大学能源热转换及其过程测控教育部重点实验室, 南京 210096
Author(s):
Jiang Yezheng Wu Hao Luo Fei Yang Linjun
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China
关键词:
湿法脱硫净烟气 细颗粒物 湿空气 水汽相变 脱除
Keywords:
wet desulfurized flue gas fine particles humid air heterogeneous condensation removal
分类号:
X513
DOI:
10.3969/j.issn.1001-0505.2016.01.014
摘要:
借鉴大气环境中暖湿气流和冷空气交汇形成降水的原理,开展了在湿法脱硫净烟气中注入适量湿空气促进细颗粒物(PM2.5)凝结长大脱除的研究,数值计算了脱硫净烟气与湿空气混合后的水汽过饱和度及可凝结水汽量分布特性.采用实际燃煤试验平台,在脱硫净烟气中添加湿空气来建立细颗粒凝结长大所需的过饱和水汽环境,考察了湿空气温湿度、添加量和脱硫净烟气温度等对细颗粒物脱除的影响.结果表明:添加适量湿空气可有效促进湿法脱硫净烟气中PM2.5脱除,混合气体过饱和度、可凝结水汽量随烟气与湿空气的相对湿度的升高及二者温差的增大逐渐增加;脱除效率随烟气温度的上升以及湿空气添加量和相对湿度的增加而增加,因此添加湿空气的方式特别适合于脱硫净烟气温度较高(≥55~60 ℃)的场合.
Abstract:
Based on the principle of rainfall formation by the mixture of warm wet air flow and cold air in atmospheric environment, an investigation was conducted on promoting the growth and removal of fine particle(PM2.5)by adding moderate humid air into wet desulfurized flue gas. The degree of water vapor supersaturation and the amount of condensable water vapor distribution after mixing the desulfurized flue gas and humid air were calculated numerically. Supersaturated water vapor environment of fine particle growth was established by adding humid air into desulfurized flue gas on the actual coal-fired experimental platform.The influences of the temperature and relative humidity, the addition of humid air and the desulfurized flue gas temperature on fine particle removal were analyzed. The results show that PM2.5 in the desulfurized flue gas can be removed effectively by adding moderate humid air. The degree of the mixed flue gas supersaturation and the amount of condensable water vapor increase with the increase of the relative humidity of flue gas and humid air and the temperature difference between these two. The removal efficiency of fine particles increases with the increase of the desulfurized flue gas temperature and the addition and relative humidity of humid air.It would be appropriate by adding humid air while the desulfurized flue gas temperature is higher(≥55 to 60 ℃).

参考文献/References:

[1] 黄元龙,杨新.大气细颗粒物对大气能见度的影响[J].科学通报,2013,58(13):1165-1170.
  Huang Yuanlong, Yang Xin. Influence of fine particulate matter on atmospheric visibility [J].Chin Sci Bull, 2013, 58(13):1165-1170.(in Chinese)
[2] Nelin T D,Joseph A M,Gorr M W, et al.Direct and indirect effects of particulate matter on the cardiovascular system [J].Toxicology Letters,2012,208(3):293-299. DOI:10.1016/j.toxlet.2011.11.008.
[3] Wu S W, Deng F R, Huang J, et al. Blood pressure changes and chemical constituent of particulate air pollution: results from the healthy volunteer natural relocation(HVNR)study [J].Environ Health Perspect, 2013, 121(1):66-72. DOI:10.1289/ehp.1104812.
[4] 肖致美,毕晓辉,冯银厂,等.宁波市环境空气中PM10和PM2.5来源解析[J].环境科学研究,2012, 25(5):549-555.
  Xiao Zhimei, Bi Xiaohui, Feng Yinchang, et al. Source apportionment of ambient PM10 and PM2.5 in urban area of ningbo city[J]. Research of Environmental Sciences, 2012, 25(5):549-555.(in Chinese)
[5] 杨林军.燃烧源细颗粒物污染控制技术[M].北京:化学工业出版社,2011:162-165.
[6] 王珲,宋蔷,姚强,等.电厂湿法脱硫系统对烟气中细颗粒物脱除作用的实验研究[J].中国电机工程学报,2008, 28(5):1-7.
  Wang Hui,Song Qiang,Yao Qiang, et al. Experimental study on removal effect of wet flue gas desulfurization system on fine particles from a coal-fired power plant [J].Proceedings of the CSEE,2008,28(5):1-7.(in Chinese)
[7] Meij R,Winkel B.The emissions and environmental impact of PM10 and trace elements from a modern coal-fired power plant equipped with ESP and wet FGD [J]. Fuel Processing Technology, 2004, 85(6/7): 641-656. DOI:10.1016/j.fuproc.2003.11.012.
[8] Nielsen M T,Livbjerg H, Fogh C L, et al. Formation and emission of fine particles from two coal-fired power plants [J]. Combustion Science and Technology, 2002, 174: 79-113.DOI: 10.1080/714922606.
[9] Yang Linjun, Bao Jingjing, Yan Jinpei, et al. Removal of fine particles in wet flue gas desulfurization system by heterogeneous condensation[J].Chemical Engineering Journal,2010,156(1):25-32. DOI:10.1016/j.cej.2009.09.026.
[10] Yan Jinpei, Bao Jingjing,Yang Linjun,et al.The formation and removal characteristics of aerosols in ammonia-based wet flue gas desulfurization[J].Journal of Aerosol Science,2011,42(9):604-614. DOI:10.1016/j. jaerosci.2011.05.005.
[11] 鲍静静,杨林军,颜金培,等.湿法烟气脱硫系统对细颗粒脱除性能的实验研究[J].化工学报,2009,60(5):1260-1267.
  Bao Jingjing,Yang Linjun,Yan Jinpei,et al.Performance of removal of fine particles by WFGD system[J].CIESC Journal,2009,60(5):1260-1267.(in Chinese)
[12] 熊桂龙,辛成运,杨林军,等.蒸汽相变协同湿法烟气脱硫系统烟气温湿度变化特性[J].中国电机工程学报,2011,31(8):18-24.
  Xiong Guilong, Xin Chengyun, Yang Linjun, et al. Temperature and humidity characteristics of flue gas from combined wet flue gas desulfurization system and heterogenous condensation[J].Proceedings of the CSEE,2011,31(8):18-24.(in Chinese)
[13] Heidenreich S, Ebert F. Condensational droplet growth as a preconditioning technique for the separation of submicron particles from gases [J].Chemical Engineering & Processing Intensification, 1995, 34(3):235-244.
[14] Chen Chin-Cheng, Tao Chun-Ju. Condensation of supersaturated water vapor on submicrometer particles of SiO2 and TiO2[J].Journal of Chemical Physics,2000,112(22):9967-9977.DOI:10.1063/1.481633.
[15] 凡凤仙,杨林军,袁竹林,等.水汽在燃煤PM2.5表面异质核化特性数值预测[J].化工学报,2007,58(10):2561-2566.
  Fan Fengxian,Yang Linjun,Yuan Zhulin,et al.Numerical prediction of water vapor nucleation behavior on PM2.5from coal combustion[J].CIESC Journal,2007,58(10):2561-2566.(in Chinese)

相似文献/References:

[1]陆斌,杨林军,辛成运.蒸汽相变促进湿法脱硫净烟气中细颗粒物的脱除[J].东南大学学报(自然科学版),2011,41(1):118.[doi:10.3969/j.issn.1001-0505.2011.01.023]
 Lu Bin,Yang Linjun,Xin Chengyun.Improving removal of fine particles from wet-process desulfurized flue gas by heterogeneous condensation[J].Journal of Southeast University (Natural Science Edition),2011,41(1):118.[doi:10.3969/j.issn.1001-0505.2011.01.023]
[2]周磊,杨树莹,吴新,等.表面活性剂增强喷雾对褐煤细颗粒物的抑制[J].东南大学学报(自然科学版),2019,49(2):280.[doi:10.3969/j.issn.1001-0505.2019.02.012]
 Zhou Lei,Yang Shuying,Wu Xin,et al.Enhancing suppression performance of spray on lignite fine particles by adding surfactant[J].Journal of Southeast University (Natural Science Edition),2019,49(1):280.[doi:10.3969/j.issn.1001-0505.2019.02.012]

备注/Memo

备注/Memo:
收稿日期: 2015-07-06.
作者简介: 姜业正(1990—),女,硕士生;杨林军(联系人),男,博士,教授,101010340@seu.edu.cn.
基金项目: 国家重点基础研究发展计划(973计划)资助项目(2013CB228505)、 国家自然科学基金资助项目(21276049).
引用本文: 姜业正,吴昊,雒飞,等.添加湿空气对湿法脱硫净烟气中细颗粒物脱除性能[J].东南大学学报(自然科学版),2016,46(1):81-86. DOI:10.3969/j.issn.1001-0505.2016.01.014.
更新日期/Last Update: 2016-01-20