Boiler briquette coal versus raw coal: Part I - Stack gas emissions
Boiler briquette coal versus raw coal: Part I - Stack gas emissions
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DOI：
10.1080/10473289.2001.10464293
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发表时间：
2001-04-01
影响因子：
2.7
通讯作者：
Zhang, JF
中科院分区：
文献类型：
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作者：
Ge, S;Bai, ZP;Zhang, JF
对中国常用的一台蒸汽发生锅炉的烟道气排放进行了表征。锅炉在燃用新配方型煤(BB煤)和燃用常规原煤(R煤)时进行了试验。对烟道气排放进行了分析，以确定排放速率和排放系数，并建立了化学源剖面。稀释源采样系统被用来收集特氟龙薄膜过滤器和石英纤维过滤器上的PM。用重量法分析了聚四氟乙烯滤清器中PM10和PM2.5的质量浓度，并用X射线荧光(XRF)分析了痕量元素。采用热/光反射技术对石英光纤滤光片中的有机碳(OC)和元素碳(EC)进行了分析。二氧化硫的测定采用标准的湿化学法。用测得的烟道气浓度和烟道气排放速率测定了R煤燃烧的一氧化碳排放量，PM10为0.74，PM2.5为0.38，SO2为20.7，CO为6.8，而BB煤燃烧的排放量为PM10为0.95，PM2.5为0.30，SO2为7.5，CO为5.3。根据排放速率和燃料燃烧率确定的基于燃料质量的排放因子，R煤的PM10为1.68，PM2.5为0.87，SO2为46.7，CO为15，而Be煤的PM2.5为2.51，PM2.5为0.79，SO2为19.9，CO为14。使用基于燃料质量的排放系数和煤/蒸汽转换系数确定的基于任务的排放因子(每吨产生的蒸汽)，R煤的PM10为0.23，PM2.5为0.12，SO2为6.4，CO为2.0，而Be煤的PM10为0.30，PM2.5为0.094，SO2为2.4，CO为1.7。研究中测试的两种煤的PM10和PM2.5元素组成也都给出了。
Stack gas emissions were characterized for a steam-generating boiler commonly used in China. The boiler was tested when fired with a newly formulated boiler briquette coal (BB-coal) and when fired with conventional raw coal (R-coal). The stack gas emissions were analyzed to determine emission rates and emission factors and to develop chemical source profiles. A dilution source sampling system was used to collect PM on both Teflon membrane filters and quartz fiber filters. The Teflon filters were analyzed gravimetrically for PM10 and PM2.5 mass concentrations and by X-ray fluorescence (XRF) for trace elements. The quartz fiber filters were analyzed for organic carbon (OC) and elemental carbon (EC) using a thermal/optical reflectance technique. Sulfur dioxide was measured using the standard wet chemistry method. Carbon monoxide was measured using an Orsat combustion analyzer.The emission rates of the R-coal combustion tin kg/hr), determined using the measured stack gas concentrations and the stack gas emission rates, were 0.74 for PM10, 0.38 for PM2.5, 20.7 for SO2, and 6.8 for CO, while those of the BB-coal combustion were 0.95 for PM10, 0.30 for PM2.5, 7.5 for SO2, and 5.3 for CO. The fuel-mass-based emission factors tin g/kg) of the R-coal, determined using the emission rates and the fuel burn rates, were 1.68 for PM10, 0.87 for PM2.5, 46.7 for SO2, and 15 for CO, while those of the BE-coal were 2.51 for PM2.5, 0.79 for PM2.5, 19.9 for SO2, and 14 for CO. The task-based emission factors tin g/ton steam generated) of the R-coal, determined using the fuel-mass-based emission factors and the coal/ steam conversion factors, were 0.23 for PM10, 0.12 for PM2.5, 6.4 for SO2, and 2.0 for CO, while those of the BE-coal were 0.30 for PM10, 0.094 for PM2.5, 2.4 for SO2, and 1.7 for CO. PM10 and PM2.5 elemental compositions are also presented for both types of coal tested in the study.