机械炼焦过程生成飞灰中含碳组分分布特征

发布时间：2018-04-24 00:41

本文选题：炼焦 + 飞灰　；参考：《中国环境科学》2017年11期

【摘要】：为了明确炼焦过程生成飞灰中含碳组分的污染特征,采集了山西省3座典型焦化厂的飞灰样品,利用碳元素分析仪对有机碳(OC)和元素碳(EC)组分进行测试,研究了EC/OC比值及排放因子.结果表明:炼焦飞灰中OC、EC的浓度范围分别为4.03×10~2~4.34×10~2mg/g、3.25×10~2~3.74×10~2mg/g,均值分别为4.20×10~2,3.52×10~2mg/g,飞灰中OC浓度均高于EC;不同焦化厂排放飞灰中EC/OC比值接近,范围在0.80~0.88之间,均值为0.84,煤焦化过程中EC/TC比值明显大于工业燃煤,且炼焦飞灰中EC含量高于烟气;炼焦过程OC、EC的排放因子范围分别为2970~3205g/t和2395~2756g/t,均值分别为3100,2596g/t.根据排放因子估算2016年山西省机械炼焦生成飞灰中OC、EC排放量分别为253725.1,212467.7t.
[Abstract]:In order to clarify the pollution characteristics of carbon components in fly ash from coking process, fly ash samples from three typical coking plants in Shanxi Province were collected, and the organic carbon (OC) and elemental carbon (ECC) components were tested by means of carbon element analyzer. The EC/OC ratio and emission factors were studied. The results showed that the concentration range of OC in fly ash from coking fly ash was 4.03 脳 10 ~ (2) C ~ (2 +) 4.34 脳 10 ~ (-2) mg / g ~ (3.25 脳 10 ~ (2)) 脳 10 ~ (2) 脳 10 ~ (2) mg 路g ~ (-1), the mean value was 4.20 脳 10 ~ (2) ~ 2 脳 10 ~ (-2) 脳 10 ~ (2) mg / g, the OC concentration of fly ash was higher than that of EC/OC, and the EC/OC ratio of fly ash from different coking plants was close to that of 0.80 ~ (0.88). The average value is 0.84, the EC/TC ratio in coking process is obviously higher than that in industrial coal combustion, and the EC content in coke fly ash is higher than that in flue gas, and the emission factor range of ECs in coking process is 2970~3205g/t and 2395 / 2756g / t, respectively, and the mean value is 3100,2596g / t. According to the emission factors, the emission of OCN EC from the fly ash from mechanical coking production in Shanxi Province in 2016 was estimated to be 253725.1m212467.7t.
【作者单位】：太原理工大学环境科学与工程学院;
【基金】：国家自然科学基金项目(41502324) 山西省自然科学基金项目(2015021170) 山西省教育厅高校科技创新项目(2015136)
【分类号】：X701

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