In order to clarify the characteristics of carbon contents (OC,EC) in the fly ash generated from coking process,the fly ash samples from three typical coking plants in Shanxi Province were collected. The contents of OC and EC weretested by carbon element analyzer and the EC/OC as well as emission factors were studied. The mass concentration of OCwas higher than EC in fly ash. The concentration ranges of OC and EC in fly ash were 4.03×102~4.34×102mg/g,3.25×102~3.74×102mg/g, with the mean values of 4.2×102 and 3.52×102mg/g, respectively. The EC/OC in fly ash emittedfrom different coking plants ranged from 0.80 to 0.88 with an average of 0.84. The ratios obtained in this study areobviously higher than those from industrial coal combustion, and the EC content in fly ash is higher than that in flue gasduring coking processes. Emission factors of OC and EC in coking process were 2970~3205g/t and 2395~2756g/t, withthe mean values of 3100 and 2596g/t, respectively. According to the emission factors, the estimated emissions of the OCand EC from fly ash during coking process in Shanxi Province in 2016 were 253725.1 and 212467.7t, respectively.%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4.03×102~4.34×102mg/g、3.25×102~3.74×102mg/g,均值分别为4.20×102,3.52×102mg/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.
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