南宁市生物质锅炉排放的颗粒物中碳组分特征  

Characteristics of carbonaceous components in particulate exhausted from biomass boilers in Nanning

作　　者：马彤[1] 陈家宝 韦进进 田瑛泽[1] 陈刚[1] 史国良[1] 冯银厂[1] MA Tong;CHEN Jia-bao;WEI Jin-jin;TIAN Ying-ze;CHEN Gang;SHI Guo-liang;FENG Yin-chang(State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China;The Environmental Protection Monitoring Station in Nanning, Nanning 530012, China)

机构地区：[1]南开大学环境科学与工程学院国家环境保护城市空气颗粒物污染防治重点实验室,天津300071 [2]南宁市环境保护监测站,广西南宁530012

出　　处：《中国环境科学》2017年第1期21-26,共6页China Environmental Science

基　　金：中央高校基本科研业务费;环保公益性行业科研专项(201509020)

摘　　要：针对生物质锅炉排放的颗粒物,分别采集了PM_(10)和PM_(2.5),主要研究了颗粒物中碳组分特征、粒径分布等.采用热光反射法(TOR)测定了样品中的有机碳(OC)和元素碳(EC)含量,得到char-EC和soot-EC的含量.结果表明,不同的除尘方式对生物质锅炉排放颗粒物中的OC和EC含量有明显的影响;作为识别源的指标OC/EC值和chart-EC/soot-EC,测得布袋除尘样品中,OC/EC和char-EC/soot-EC在PM_(10)中分别为1.4±0.4和35.7±16.5,在PM_(2.5)中分别为2.2±1.3和15.5±10.3;旋风除尘PM_(10)样品中OC/EC值和char-EC/soot-EC分别为6.1±1.9和5.2±2.5,旋风除尘PM_(2.5)样品中6.5±2.0、2.5±2.3.对8个碳丰度分析可知,布袋除尘样品中EC1在TC中的占比最高;旋风除尘样品中OC1-OC3在TC中占比较高.此外,OC2、OC3和EC2主要富集在PM_(2.5)中,OC4、EC1和EC3主要富集在PM_(10)中.Characteristics of the carbon components and the particle size distribution of the particulate matter emitted fromthe biomass boiler were studied by collecting PM10and PM2.5.The organic carbon(OC)and elemental carbon(EC)in thesample were determined by the thermal/optical reflectance(TOR),the quantity of char-EC and soot-EC were obtained.The results showed that different removal ways of dust had significant effects on OC and EC quantity in particulate matterdischarged from biomass boiler.The value of OC/EC and char-EC/soot-EC as indicators of identification of source were1.4±0.4and35.7±16.5respectively in PM10,2.2±1.3and15.5±10.3in PM2.5respectively in the bag dust removalsamples.The10value of OC/EC and char-EC/soot-EC in cyclone dust samples of were6.1±1.9and5.2±2.5,and thePM2.5were6.5±2.0and2.5±2.3respectively.For carbon fractions:OC1~OC4,EC1~EC3and OPC analysis,thepercentage of EC1in TC was the highest in the bag dust removal samples.The cyclone dust samples of relative contents ofOC1~OC3in TC were higher than others.This study also showed that OC2,OC3and EC2were mainly concentrated inPM2.5,OC4,ECl and EC3mainly in PM10.

关 键 词：生物质锅炉 蔗渣 除尘方式 碳组分 

分 类 号：X513[环境科学与工程—环境工程]