钢铁企业烧结工序烟粉尘排放的测试与评价

发布时间：2018-06-15 18:18

本文选题：烧结工序 + PM.　；参考：《东北大学学报(自然科学版)》2017年03期

【摘要】：对某钢铁企业烧结工序不同烟粉尘排放源的现场采样,包括烧结煤粉破碎、烧结配料、烧结机头、烧结机尾和烧结矿成品筛分等工艺过程.测试了各工艺过程的除尘灰以及排放烟粉尘的粒径分布和化学组成,分析得出除尘前烟粉尘的粒径分布和化学组成.在此基础上,建立了烧结工序各个烟粉尘排放点的综合评价指标.通过专家调研得出了各个评价指标的权重集,最终运用模糊综合评判法,对烧结工序各个烟粉尘排放点进行综合评价,得出烧结工序的重点烟粉尘排放点.结果表明,烧结机头的TSP排放总量、PM_(2.5)质量分数、PM_(10)质量分数和重金属元素质量分数均为最大,是烧结工序最重要的烟粉尘排放点.
[Abstract]:The field sampling of different smoke and dust emission sources in sintering process of a iron and steel enterprise includes sintering pulverized coal crushing, sintering proportioning, sintering machine head, sintering machine tail and sinter product sieving, etc. The particle size distribution and chemical composition of dust removal and smoke dust emission in each process were measured and the particle size distribution and chemical composition of smoke dust before dust removal were obtained. On this basis, the comprehensive evaluation index of smoke dust emission points in sintering process is established. Through expert investigation, the weight set of each evaluation index is obtained. Finally, the comprehensive evaluation of each smoke dust emission point in sintering process is carried out by using fuzzy comprehensive evaluation method, and the key smoke dust emission points in sintering process are obtained. The results show that the mass fraction of tsp and heavy metal elements in the sinter head is the largest, which is the most important emission point of smoke dust in sintering process.
【作者单位】：东北大学国家环境保护生态工业重点实验室;中冶南方(武汉)威仕工炉有限公司;
【基金】：环保公益性行业科研专项(201409023) 辽宁省博士科研启动基金资助项目(201501156)
【分类号】：X757

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