首页> 中文期刊> 《中国环境科学》 >南宁市生物质锅炉排放的颗粒物中碳组分特征

南宁市生物质锅炉排放的颗粒物中碳组分特征

         

摘要

Characteristics of the carbon components and the particle size distribution of the particulate matter emitted from the biomass boiler were studied by collecting PM10 and PM2.5.The organic carbon (OC) and elemental carbon (EC) in the sample 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 matter discharged from biomass boiler.The value of OC/EC and char-EC/soot-EC as indicators of identification of source were 1.4 ± 0.4 and 35.7 ± 16.5 respectively in PM10,2.2 ± 1.3 and 15.5 ± 10.3 in PM2.5 respectively in the bag dust removal samples.The 10 value of OC/EC and char-EC/soot-EC in cyclone dust samples of were 6.1 ± 1.9 and 5.2 ± 2.5,and the PM2.5 were 6.5 ± 2.0 and 2.5 ± 2.3 respectively.For carbon fractions:OC1~OC4,EC1~ EC3 and OPC analysis,the percentage ofEC1in TC was the highest in the bag dust removal samples.The cyclone dust samples of relative contents of OC1~OC3 in TC were higher than others.This study also showed that OC2,OC3 and EC2 were mainly concentrated in PM2.5,OC4,ECl and EC3 mainly in PM10.%针对生物质锅炉排放的颗粒物,分别采集了PM10和PM2.5,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PM10中分别为1.4±0.4和35.7±16.5,在PM2.5中分别为2.2±1.3和15.5±10.3;旋风除尘PM10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PM2.5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OC 1~OC3在TC中占比较高.此外,OC2、OC3和EC2主要富集在PM2.5中,OC4、EC1和EC3主要富集在PM10中.

著录项

  • 来源
    《中国环境科学》 |2017年第1期|21-26|共6页
  • 作者单位

    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;

    南宁市环境保护监测站,广西南宁530012;

    南宁市环境保护监测站,广西南宁530012;

    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;

    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;

    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;

    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;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 粒状污染物;
  • 关键词

    生物质锅炉; 蔗渣; 除尘方式; 碳组分;

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