烧结烟气活性炭法超低排放运行实践及工艺优化  

Operational practice and optimization analysis of ultra-low emission technology by use of activated coke of sintering flue gas

作　　者：孔镇 李进中 KONG Zhen;LI Jinzhong(Shandong Iron and Steel Group Yongfeng Lingang Co.,Ltd.,Linyi 276000,Shandong,China;Hunan Zhongye Changtian Energy Conservation and Environmental Protection Technology Co.,Ltd.,Changsha 410205,Hunan,China)

机构地区：[1]山东钢铁集团永锋临港有限公司,山东临沂276000 [2]湖南中冶长天节能环保技术有限公司,湖南长沙410205

出　　处：《工程建设》2025年第2期82-86,共5页Engineering Construction

摘　　要：为响应钢铁行业超低排放政策要求,以山西某钢铁集团烧结烟气两级活性炭法超低排放运行实践为例,介绍了两级活性炭法烟气净化原理及系统组成,分析了实际运行过程中给料输送机结露及除尘管道堵塞、给料输送机顶部冒灰、制酸系统短时间停运时影响吸附解析系统正常运行、活性炭消耗减少、吸附塔压降增大、透气性变差和吸附塔气室积料的问题,并提出了改进和优化措施。实践证明:处理后的SO2浓度为0~5 mg/Nm^(3),SO_(2)脱除率为99.7%~100%;处理后的NO_(x)浓度为25~32 mg/Nm^(3),NO_(x)脱除率为85.4%~89.3%;处理后的粉尘浓度为2~10 mg/Nm^(3);氨逃逸浓度为2~8 mg/Nm^(3),各项指标均优于超低排放指标。In response to the Ministry of Ecology and Environmental Protections ultra-low emission for the steel industry,the operation practice of ultra-low emission of sintered flue gas two-stage activated carbon method in Shanxi is introduced.The principle and system composition of two-stage activated carbon flue gas purification are introduced.The condensation of feed conveyor,the blockage of dust removal pipeline,the leakage dust of the top of feed conveyor,the normal running of adsorption analysis system during acid system out of service for a short time,reducing consumption of activated carbon,the increased pressure drop and poor gas permeability of adsorption tower,the accumulation of activated carbon in air chamber of adsorption tower are analyzed in this paper.Improvement and optimization measures have been proposed.Practice has proven that the concentration of SO2 after treatment is 0~5 mg/Nm^(3),and the SO_(2) removal rate is 99.7%~100%;The treated NO_(x) concentration is 25~32 mg/Nm^(3),and the NO_(x) removal rate is 85.4%~89.3%;The concentration of processed dust is 2~10 mg/Nm;The ammonia escape concentration is 2~8 mg/Nm^(3),and all indicators are better than the ultra-low emission indicators.

关 键 词：烧结烟气 活性炭 超低排放 优化 

分 类 号：X511[环境科学与工程—环境工程]