北京市燃气工业锅炉NO_x排放及空气质量影响分析_薛亦峰

第37卷《环境科学与技术》编辑部:(网址)http://fjks.chinajournal.net.cn(电话)027-87643502(电子信箱)hjkxyjs@126.com收稿日期:2014-06-23;修回2014-08-10

基金项目:国家科技支撑计划课题(2013BAC17B01);2014年度环保公益性行业科研专项(201409005);北京市环境保护科学研究院科技基金(2014-A-04)作者简介:薛亦峰(1983-),男,助理研究员,硕士,主要从事大气污染防治研究,(电子信箱)xueyifeng294@http://m.wendangku.net/doc/418092052379168884868762caaedd3383c4b527.html ;*通讯作者,(电子信箱)nielei@http://m.wendangku.net/doc/418092052379168884868762caaedd3383c4b527.html 。

Environmental Science &Technology

第37卷第12期2014年12月

Vol.37No.12

Dec.2014

薛亦峰,聂滕,周震,等.北京市燃气工业锅炉NOx 排放及空气质量影响分析[J].环境科学与技术,2014,37(12):118-122.XueYifeng,NieTeng,ZhouZhen,etal.EmissionofNOXfromgas-firedindustrialboilersinBeijingandtheirimpactonairquality[J].EnvironmentalScience&Technology,

2014,37(12):118-122.

北京市燃气工业锅炉NOx 排放及空气质量影响分析

薛亦峰1,2,3,聂滕1,2,周震1,2,闫静1,2,聂磊1,

2*

(1.北京市环境保护科学研究院,北京100037;2.国家城市环境污染控制工程技术研究中心,北京

100037;

3.北京师范大学环境学院,北京100875)

要:多年来北京市一直致力于改善能源结构,推行燃煤锅炉清洁能源改造等举措,

不断提高天然气使用比例,天然气占一次能源的比例从2000年3.1%上升到2012年的16.7%,燃气锅炉的数量、总蒸吨数初具规模。相对燃煤工业锅炉,燃气工业锅炉的主要环境问题是NO x 排放,NO x 又是二次污染物O 3和PM 2.5的前体物,从而对空气质量产生影响。该研究选择典型燃气锅炉,对其NO x 实际排放浓度进行监测,获取排放因子。结合活动水平,采用排放因子法估算排放量,利用WRF-CMAQ 模拟其对空气质量的影响。结果表明:北京市燃气工业锅炉NO x 排放因子为2.19g/m 3天然气,采用排放因子法估算全市燃气工业锅炉NO x 排放量为9339t 。对于空气质量影响,不同季度略有差异,全年NO x 浓度上升明显,贡献7.2%NO 2平均浓度,二次转化为PM 2.5不明显,而且夏季由于气温较高,在光化学反应作用下二次转化成臭氧趋势明显。

关键词:燃气工业锅炉;大气污染;排放因子;空气质量中图分类号:X51

文献标志码:A

doi :10.3969/j.issn.1003-6504.2014.12.023

文章编号:1003-6504(2014)12-0118-05

Emission of NO x from Gas-fired Industrial Boilers in Beijing and

Their Impact on Air Quality

XUE Yifeng 1,2,3,NIE Teng 1,2,ZHOU Zhen 1,2,YAN Jing 1,2,NIE Lei 1,

2*

(1.Beijing Municipal Research Institute of Environmental Protection ,Beijing 100037,China ;2.National Engineering Research Center of Urban Environmental Pollution Control ,Beijing 100037,China ;

3.School of Environment ,Beijing Normal University ,Beijing 100875,China )

Abstract :Beijing was contributed to improve the energy structure for many years ,and many measures are taken including the fuel clean of coal -fired boilers ,increasing the usage rate of natural gas.In this way ,the usage rate of natural gas accounts for primary energy from 3.1%in 2000to 16.7%in 2012,the amount of gas-fired boilers are being to take http://m.wendangku.net/doc/418092052379168884868762caaedd3383c4b527.htmlpared to coal-fired industrial boilers ,the primary environmental issue is the emission of nitrogen oxide (NO x )which is the precursor of ozone (O 3)and fine particulate (PM 2.5),and has a widely influence on the air quality.This paper focused on the typical gas-fired industrial boilers ,obtained the emission factor through the monitoring the level of their NO x emission http://m.wendangku.net/doc/418092052379168884868762caaedd3383c4b527.htmlbined with the activity data ,emission factors method was used to estimate the emission of NO x from gas-fired industrial boilers all over the city ,and air quality model was used to simulate the influence on the air quality.Results showed that NO x emission factor of gas-fired boiler in Beijing was 2.19g/m 3(natural gas

),and the emission was estimated at 9339ton.For the effect on the air quality ,there were differences among seasons ,the concentration of NO x rose obviously in general ,contributing 7.2%of total yearly-average concentration in the city ,and the trend of secondary transformation to PM 2.5was not obvious.Due to the high temperature ,the transformation from NO x to O 3were observed ,and leading to the concentration of O 3rose.

Key words :gas-fired industrial boiler ;air pollution ;emission factor ;air quality

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