Chemical constituents in particulate emissions from an integrated iron and steel facility
Chemical constituents in particulate emissions from an integrated iron and steel facility
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DOI：
10.1016/j.jhazmat.2006.12.054
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发表时间：
2007-08-17
影响因子：
13.6
通讯作者：
Hung-Lung, Chiang
中科院分区：
文献类型：
--
作者：
Jiun-Homg, Tsai;Kuo-Hsiung, Lin;Hung-Lung, Chiang
钢铁厂四种综合工艺的颗粒物排放量，研究了炼焦、烧结、冷成型和热成型。分析了21种元素、11种离子、元素碳（EC）、有机碳（OC）和16种多环芳烃（PAHs）的颗粒物组成，建立了某钢铁厂不同工艺排放颗粒物的“指纹”。结果表明，元素组成（0。11-0.42 g/g）、水溶性离子（0.34-0.52 g/g）、元素碳（0.008-0.14 g/g）、有机碳（0.02-0.06 g/g）和多环芳烃（0.52-6.2 mg/g）对颗粒质量有贡献。一般来说，硫的质量贡献高于其他元素，这是由于钢铁厂使用煤、熔剂、重油和许多回收材料造成的。钾和氯在烧结厂的颗粒质量贡献高于其他工艺，这可能是由于钾的沸点和挥发性较低。此外，许多回收材料被送入烧结厂，导致颗粒相中的钾和氯浓度很高。在四个过程中，分析了八种PAH化合物。致癌化合物苯并（a）芘（BaP）仅在烧结过程中可检测到。(c)2007 Elsevier B. V.保留所有权利。
Particle emissions from four integrated iron and steel plant processes, i.e., cokemaking, sintering, cold forming, and hot forming, were investigated in this study. Particle compositions of 21 element species, 11 ionic species, elemental carbon (EC), organic carbon (OC) and 16 polyaromatic hydrocarbons (PAHs) were analyzed to create "fingerprints" of the particles emitted from various processes in an integrated iron and steel plant. Results indicated that element compositions (0. 11-0.42 g/g), water-soluble ions (0.34-0.52 g/g), elemental carbon (0.008-0.14 g/g), organic carbon (0.02-0.06 g/g) and PAHs (0.52-6.2 mg/g) contributed to the particle mass. In general, sulfur had a higher mass contribution than the other elements, which resulted from the use of coal, flux, heavy oil, and many recycled materials in the iron and steel plant. The particle mass contribution of potassium and chlorine in the sinter plant was higher than in other processes; this may be attributed to the lower boiling point and volatility of potassium. In addition, many recycled materials were fed into the sinter plant, causing a high concentration of potassium and chlorine in the particle phase. Eight PAH compounds were analyzed in the four processes. The carcinogenic compound Benzo(a)pyrene (BaP) was detectable only in the sintering process. (c) 2007 Elsevier B.V. All rights reserved.