炼焦装煤烟气稀释采样过程中稀释比对PM<sub>2.5</sub>测量的影响

曹芮宁; 李振; 闫雨龙; 彭林; 韩东航; 牛月圆; 段小琳; 徐寅杰

doi:10.13205/j.hjgc.202308016

炼焦装煤烟气稀释采样过程中稀释比对PM_2.5测量的影响

doi: 10.13205/j.hjgc.202308016

1. 华北电力大学环境科学与工程学院资源环境系统优化教育部重点实验室, 北京 102206;
2. 北京交通大学环境学院智能交通绿色低碳技术教育部工程研究中心, 北京 100091;
3. 长治市生态环境科学研究院(长治市生态环境技术服务中心), 山西长治 046000

基金项目:

国家自然科学基金项目(22106044,21976053)

国家重点研发计划项目(2019YFC0214200)

中央高校基本科研业务费专项资金(2021MS035)

详细信息

作者简介:
曹芮宁(1998-),男,硕士,主要研究方向为燃煤源排放污染物稀释采样方法。ruin_cao@foxmail.com

通讯作者:
李振(1986-),男,讲师,主要研究方向为大气污染源排放测量技术及应用。zhenli@ncepu.edu.cn

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出版历程
- 收稿日期: 2023-01-12
- 网络出版日期: 2023-11-15

EFFECT OF DILUTION RATIO ON MEASUREMENT OF PM_2.5 DURING DILUTION SAMPLING PROCESS OF COKING COAL CHARGING FLUE

1. MOE Key Laboratory of Resources and Environmental System Optimization, School of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China;
2. Engineering Research Center of Clean and Low-carbon Technology for Intelligent Transportation, Ministry of Education, School of Environment, Beijing Jiaotong University, Beijing 100091, China;
3. Changzhi Academy of Eco-Environmental Science(Changzhi Eco-Environmental Technology Service Center), Changzhi 046000, China

摘要

摘要: 为探究炼焦装煤排放颗粒物稀释采样过程中,不同稀释比对测量PM_2.5粒径分布和碳质组分的影响,以管式炉热解煤炭来模拟炼焦装煤过程,通过建立稀释采样系统,设置低、中、高3个稀释比梯度,研究了PM_2.5的粒径分布、质量浓度、有机碳(OC)/元素碳(EC)和多环芳烃(PAHs)浓度的变化规律。结果显示:随着稀释比的增大,PM_2.5粒数浓度整体呈升高趋势,除尘后高稀释比下PM_2.5粒数浓度相对中、低稀释比分别增大了约3.7,1.3倍,除尘前高稀释比下PM_2.5粒数浓度相对中、低稀释比增大了约1.1倍;PM_2.5质量浓度及OC/EC整体随稀释比的增大呈减小趋势,较低稀释比升高到中等稀释比后,修正PM_2.5及OC/EC变化不显著,但高稀释比下,修正PM_2.5及OC/EC相比低稀释比时分别减小了约64.8%、45.1%;在不同稀释比下颗粒态PAHs的环数分布相对稳定,除尘后颗粒物中四环和五环芳烃的归一化占比较高,均在29.1%以上。稀释比升高增强了有机物的气粒转化,其在小粒径段上均相凝结增强,生成了更多超细颗粒物,PM_2.5总粒数浓度增加;继续升高稀释比,降低了体系中气态有机物浓度,其在大粒径段上的非均相凝结减弱,修正PM_2.5质量浓度降低。中等稀释比(41~52倍)下,气态有机物气粒转化相比低稀释比下更加充分,相比高稀释比,避免了烟气体系气粒相平衡破坏或有机物的过度凝结,因此建议采用中等稀释比采集分析炼焦装煤排放的PM_2.5。
- 炼焦工业 /
- 细颗粒物(PM_2.5) /
- 稀释采样 /
- 粒径分布 /
- 有机碳 /
- 多环芳烃
Abstract: To investigate the effects of different dilution ratios on the particle size distribution and carbonaceous fraction of PM_2.5 in the dilution sampling process of coking coal charging flue, the experiment of the coal coking process was carried out with a tube furnace. With low, medium, and high dilution ratios, PM_2.5 size distribution, PM_2.5 mass concentration, the ratio of organic carbon to elemental carbon (OC/EC) and polycyclic aromatic hydrocarbons (PAHs) concentration were determined under different dilution conditions. The result showed that the dilution ratio had a significant effect on ultrafine particles. As the dilution ratio increased, the particle number concentration showed an increasing trend, and the PM_2.5 number concentration at the high dilution ratio increased by about 3.7 and 1.3 times, compared with the medium and low dilution ratios after particle filtration, respectively. In contrast, the concentration of PM_2.5 with the high dilution ratio before particle filtration increased by 1.1 times approximately, compared to those at both the medium and low dilution ratios. As the dilution ratios increased, the corrected PM_2.5 mass concentration and OC/EC ratio showed a decreasing trend. No significant changes in the corrected PM_2.5 mass concentration and OC/EC ratio were observed when the dilution ratio increased from low level to medium level. At the high dilution level, the corrected PM_2.5 mass concentration and OC/EC ratio decreased by about 64.8% and 45.1%, respectively, compared to those at low dilution ratios. The ring number distribution of PAHs was relatively stable at different dilution ratios. The normalized proportion of 4- and 5-ring aromatic hydrocarbons in PM_2.5 was more than 29.1%. The dilution ratio increase promoted the gas-particle conversion of the organic matter, and the homogeneous condensation of gaseous organic matter on the small particle size range was enhanced. So that many ultrafine particles were generated and the total particle number concentration of PM_2.5 drastically increased. A further increase in the dilution ratio could reduce the concentration of gaseous organic matter in the mixed gas system. Therefore, the heterogeneous condensation onto the larger size particles was impaired, and the corrected PM_2.5 mass concentration was reduced. With medium dilution ratios (41 to 52), the gas-particle conversion of gaseous organic matter was more adequate than those at low dilution ratios, and both the disruption of the gas-particle phase equilibrium and over-condensation of organic matter due to the high dilution ratios were avoided. So it was recommended to determine the PM_2.5 emission from the coking coal charging process with a medium dilution ratio range.
- coking industry /
- fine particulate matter /
- dilution sampling /
- size distribution /
- organic carbon /
- polycyclic aromatic hydrocarbons

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参考文献(63)

[1]	HUO H,LEI Y,ZHANG Q,et al.China’s coke industry:recent policies,technology shift,and implication for energy and the environment[J].Energy Policy,2012,51:397-404.
[2]	LI Y,WANG G S,LI Z H,et al.A life cycle analysis of deploying coking technology to utilize low-rank coal in China[J].Sustainability,2020,12(12):1-17.
[3]	LIU G R,ZHENG M H,BA T,et al.A preliminary investigation on emission of polychlorinated dibenzo-p-dioxins/dibenzofurans and dioxin-like polychlorinated biphenyls from coke plants in China[J].Chemosphere,2009,75(5):692-695.
[4]	中国炼焦行业协会.焦化行业碳达峰碳中和行动方案[EB/OL].http://www.cnljxh.com/news/show.php?id=470.2022-08-03.
[5]	FU X,WANG S X,ZHAO B,et al.Emission inventory of primary pollutants and chemical speciation in 2010 for the Yangtze River Delta region,China[J].Atmospheric Environment,2013,70:39-50.
[6]	LEI Y,ZHANG Q,HE K B,et al.Primary anthropogenic aerosol emission trends for China,1990-2005[J].Atmospheric Chemistry and Physics,2011,11(3):931-954.
[7]	PAASONEN P,KUPIAINEN K,KLIMONT Z,et al.Continental anthropogenic primary particle number emissions[J].Atmospheric Chemistry and Physics,2016,16(11):6823-6840.
[8]	牟玲.机械炼焦过程主要大气污染物排放特征及迁移行为研究[D].太原:太原理工大学,2013.
[9]	WANG H L,HAO R,FANG L,et al.Study on emissions of volatile organic compounds from a typical coking chemical plant in China[J].Science of the Total Environment,2021,752:141927.
[10]	王彦辉,赵亮,孙文强,等.炼焦工序颗粒物排放特征[J].环境科学,2018,39(12):5359-5364.
[11]	LIBERTI L,NOTARNICOLA M,PRIMERANO R,et al.Air pollution from a large steel factory:polycyclic aromatic hydrocarbon emissions from coke-oven batteries[J].Journal of the Air&Waste Management Association,2006,56(3):255-260.
[12]	李从庆.炼焦生产大气污染物排放特征研究[D].重庆:西南大学,2009.
[13]	许国梁.炼焦过程中多环芳烃(PAHs)排放特性研究[D].太原:太原理工大学,2011.
[14]	CHENG L,WEI W,ZHANG C Z,et al.Quantitation study on VOC emissions and their reduction potential for coking industry in China:based on in-situ measurements on treated and untreated plants[J].Science of the Total Environment,2022,836:155466.
[15]	张莹,邓建国,王刚,等.典型钢铁焦化厂可凝结颗粒物排放特征[J].环境工程,2020,38(9):154-158.
[16]	WANG G,DENG J G,ZHANG Y,et al.Evaluating airborne condensable particulate matter measurement methods in typical stationary sources in China[J].Environmental Science&Technology,2020,54:1363-1371.
[17]	YANG H H,LEE K T,HSIEH Y S,et al.Emission characteristics and chemical compositions of both filterable and condensable fine particulate from steel plants[J].Aerosol and Air Quality Research,2015,15(4):1672-1680.
[18]	蒋靖坤,邓建国,李振,等.固定污染源排气中PM_2.5采样方法综述[J].环境科学,2014,35(5):2018-2024.
[19]	国家环境保护局.固定污染源排气中颗粒物测定与气态污染物采样方法:GB/T 16157-1996[S].北京:国家环境保护局,1996.
[20]	ENGLAND G C,WATSON J G,CHOW J C,et al.Dilution-based emissions sampling from stationary sources:part 1-compact sampler methodology and performance[J].Journal of the Air&Waste Management Association,2007,57(1):65-78.
[21]	李兴华,曹阳,蒋靖坤,等.固定源PM_2.5稀释采样器的研制[J].环境科学学报,2015,35(10):3309-3315.
[22]	HILDEMANN L M,CASS G R,MARKOWSKI G R.A dilution stack sampler for collection of organic aerosol emissions:design,characterization and field tests[J].Aerosol Science and Technology,1989,10(1):193-204.
[23]	LIPSKY E M,PEKNEY N J,WALBERT G F,et al.Effects of dilution sampling on fine particle emissions from pulverized coal combustion[J].Aerosol Science and Technology,2004,38 (6):574-587.
[24]	LIPSKY E M,ROBINSON A L.Effects of dilution on fine particle mass and partitioning of semivolatile organics in diesel exhaust and wood smoke[J].Environmental Science&Technology,2006,40(1):155-162.
[25]	ZHENG S R,KONG S F,YAN Q,et al.Impact of dilution ratio and burning conditions on the number size distribution and sizedependent mixing state of primary particles from domestic solid fuel burning[J].Environmental Science&Technology Letters,2022,9(7):611-617.
[26]	邓建国,张莹,王乐冰,等.测量固定源可凝结颗粒物的稀释间接法及系统[J].环境科学学报,2020,40(11):4162-4168.
[27]	KOZIELSKA B,KONIECZYNSKI J.Polycyclic aromatic hydrocarbons in particulate matter emitted from coke oven battery[J].Fuel,2015,144:327-334.
[28]	LI H Y,GUO L L,CAO R F,et al.A wintertime study of PM_2.5-bound polycyclic aromatic hydrocarbons in Taiyuan during 2009-2013:assessment of pollution control strategy in a typical basin region[J].Atmospheric Environment,2016,140:404-414.
[29]	STELLA A,PICCARDO M T,PALA M,et al.Temporal and spatial variations of polycyclic aromatic hydrocarbon concentrations around a coke oven plant[J].Journal of the Air&Waste Management Association,2012,62(9):1003-1011.
[30]	International Organization for Standardization (ISO).Stationary source emissions test method for determining PM_2.5and PM₁₀ mass in stack gases using cyclone samplers and sample dilution:ISO25597-2013[S].ISO:Geneva,Switzerland,2013.
[31]	KONG S F,JI Y Q,LI Z Y,et al.Emission and profile characteristic of polycyclic aromatic hydrocarbons in PM_2.5and PM₁₀ from stationary sources based on dilution sampling[J].Atmospheric Environment,2013,77:155-165.
[32]	International Organization for Standardization (ISO).Stationary source emissions test method for determining PM_2.5and PM₁₀ mass in stack gases using cyclone samplers and sample dilution:ISO25597-2013[S].ISO:Geneva,Switzerland,2013.
[33]	Dekati e Diluter Pro[EB/OL].https://www.dekati.com/products/ediluter-pro/.
[34]	MYERS R E L T.Progress on developing a federal reference PMfine source test method[R].Research Triangle Park,NC:USEPA,2003.
[35]	LIGHTY J S,VERANTH J M,SAROFIM A F.Combustion aerosols:factors governing their size and composition and implications to human health[J].Journal of the Air&Waste Management Association,2000,50(9):1565-1618.
[36]	LINAK W P,MILLER C A,SEAMES W S,et al.On trimodal particle size distributions in fly ash from pulverized-coal combustion[J].Proceedings of the Combustion Institute,2002,29(1):441-447.
[37]	YU D X,XU M H,YAO H,et al.Use of elemental size distributions in identifying particle formation modes[J].Proceedings of the Combustion Institute,2007,31 (2):1921-1928.
[38]	LIPSKY E,STANIER C O,PANDIS S N,et al.Effects of sampling conditions on the size distribution of fine particulate matter emitted from a pilot-scale pulverized-coal combustor[J].Energy&Fuels,2002,16(2):302-310.
[39]	武亚凤.燃煤污染源排放颗粒物采样器比对及电厂测试应用[D].北京:中国环境科学研究院,2017.
[40]	PANKOW J F.Review and comparative analysis of the theories on partitioning between the gas and aerosol particulate phases in the atmosphere[J].Atmospheric Environment,1987,21(11):2275-2283.
[41]	PANKOW J F.An absorption model of gas/particle partitioning of organic compounds in the atmosphere[J].Atmospheric Environment,1994,28(2):185-188.
[42]	LIU X F,PENG L,BAI H H,et al.Characteristics of organic carbon and elemental carbon in the ambient air of coking plant[J].Aerosol and Air Quality Research,2015,15(4):1485-1493.
[43]	刘效峰,彭林,白慧玲,等.焦炉顶和厂区环境中有机碳和元素碳的粒径分布[J].环境科学,2013,34(8):2955-2960.
[44]	CASATI R,SCHEER V,VOGT R,et al.Measurement of nucleation and soot mode particle emission from a diesel passenger car in real world and laboratory in situ dilution[J].Atmospheric Environment,2007,41(10):2125-2135.
[45]	CRIPPA M,DECARLO P F,SLOWIK J G,et al.Wintertime aerosol chemical composition and source apportionment of the organic fraction in the metropolitan area of Paris[J].Atmospheric Chemistry and Physics,2013,13(2):961-981.
[46]	杨国威,孔少飞,郑淑睿,等.民用燃煤排放分级颗粒物中碳组分排放因子[J].环境科学,2018,39(8):3524-3534.
[47]	MU L,LI X M,LIU X F,et al.Characterization and emission factors of carbonaceous aerosols originating from coke production in China[J].Environmental Pollution,2021,268(Part B):115768.
[48]	WEITKAMP E A,LIPSKY E M,PANCRAS P J,et al.Fine particle emission profile for a large coke production facility based on highly time-resolved fence line measurements[J].Atmospheric Environment,2005,39(36):6719-6733.
[49]	XU S S,LIU W X,TAO S.Emission of polycyclic aromatic hydrocarbons in China[J].Environmental Science&Technology,2006,40(3):702-708.
[50]	CHENG X L,LI E K,CANG D Q,et al.Generation of polycyclic aromatic hydrocarbons during coking[J].Journal of Iron and Steel Research,International,2010,17(12):6-10.
[51]	WANG R P,WANG X Q,CHENG S Y,et al.Emission characteristics and reactivity of volatile organic compounds from typical high-energy-consuming industries in North China[J].Science of the Total Environment,2022,809:151134.
[52]	LI J,ZHOU Y,SIMAYI M,et al.Spatial-temporal variations and reduction potentials of volatile organic compound emissions from the coking industry in China[J].Journal of Cleaner Production,2019,214:224-235.
[53]	JIUN-HORNG T,KUO-HSIUNG L,CHIH-YU C,et al.Volatile organic compound constituents from an integrated iron and steel facility[J].Journal of Hazardous Materials,2008,157 (2/3):569-578.
[54]	郭鹏,仝纪龙,刘永乐,等.机械化炼焦VOCs排放源成分谱分析[J].环境科学与技术,2020,43(5):103-114.
[55]	SHI J W,DENG H,BAI Z P,et al.Emission and profile characteristic of volatile organic compounds emitted from coke production,iron smelt,heating station and power plant in Liaoning Province,China[J].Science of the Total Environment,2015,515/516:101-108.
[56]	王凤滨.基于全流和部分流稀释采样系统测试柴油发动机排放的相关性分析[D].武汉:武汉理工大学,2009.
[57]	牟玲.炼焦生产过程颗粒物和多环芳烃的排放特征[D].太原:太原理工大学,2010.
[58]	MU L,PENG L,LIU X F,et al.Emission characteristics and size distribution of polycyclic aromatic hydrocarbons from coke production in China[J].Atmospheric Research,2017,197:113-120.
[59]	刘效峰,彭林,白慧玲,等.炼焦炉周边环境PM₁₀中多环芳烃的分布特征[J].华中科技大学学报(自然科学版),2013,41(9):85-90.
[60]	KOZIELSKA B,KONIECZYN'SKI J.Polycyclic aromatic hydrocarbons in particulate matter emitted from coke oven battery[J].Fuel,2015,144:327-334.
[61]	SHI Y,LI J G,GAO L.Study on polycyclic aromatic hydrocarbons distribution during single coal coking[J].Advanced Materials Research,2012,476/477/478:307-310.
[62]	孔少飞.大气污染源排放颗粒物组成、有害组分风险评价及清单构建研究[D].天津:南开大学,2012.
[63]	王静,朱利中,沈学优.某焦化厂空气中PAHs的污染现状及健康风险评价[J].环境科学,2003,24(1):135-138.