富氧协同烟气循环对烧结矿质量指标和CO排放的影响  

Influence of oxygen enrichment and flue gas circulation on quality index of sinter and CO emissions

作　　者：吴宏亮 罗云飞[1] 周江虹 春铁军[1] 余正伟 裴元东 杨佳龙 龙红明 WU Hongliang;LUO Yunfei;ZHOU Jianghong;CHUN Tiejun;YU Zhengwei;PEI Yuandong;YANG Jialong;LONG Hongming(School of Metallurgical Engineering,Anhui University of Technology,Maanshan 243032,China;Maanshan Iron and Steel Co.Ltd.,Maanshan 243022,China;Zhongtian Iron and Steel Group Co.Ltd.,Changzhou 213000,China;Key Laboratory of Metallurgy Engineering&Resources Recycling of Anhui Province(Anhui University of Technology),Maanshan 243002,China)

机构地区：[1]安徽工业大学冶金工程学院,安徽马鞍山243032 [2]马鞍山钢铁股份有限公司,安徽马鞍山243022 [3]中天钢铁集团有限公司,江苏常州213000 [4]冶金工程与资源综合利用安徽省重点实验室(安徽工业大学),安徽马鞍山243002

出　　处：《中南大学学报（自然科学版）》2022年第4期1179-1188,共10页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(51674002);安徽高校自然科学研究项目(KJ2018A0045)。

摘　　要：为优化烟气循环技术,实现烧结烟气污染物超低排放,研究不同烟气循环模式及富氧协同循环对烧结矿质量指标和CO排放的影响。研究结果表明:烟气循环有助于降低CO排放量;与常规烧结条件相比,烟气循环条件下垂直烧结速度和利用系数明显降低,固体燃耗略有降低,其他指标变化不明显;富氧协同烟气循环可有效解决单一烟气循环过程中有效氧不足的问题,进而解决烧结利用系数降低的问题;富氧协同外循环和内循环后,当有效氧体积分数分别提高至15%和18%时,CO排放量降幅分别高达39.40%和25.54%。In order to optimize the flue gas circulation technology and achieve ultra-low emission of sintering flue gas pollutants,the effects of different flue gas circulation modes and oxygen-enriched cooperative circulation on the quality indicators and CO emissions of sintering ore were studied.The results show that flue gas circulation can help reduce CO emissions.Compared with the conventional sintering condition,the vertical sintering speed and utilization coefficient in condition of flue gas circulation are significantly reduced,the solid fuel consumption is slightly reduced,and other indicators are not changed significantly.After oxygen enrichment and flue gas circulation,it can effectively solve the effective oxygen shortage in a single flue gas cycle,thereby solving the problem of sintering utilization coefficient reduction.After oxygen enrichment synergizes external and internal circulation,the CO emission reduction rate is as high as 39.40%and 25.54%when the available oxygen content increases to 15%and 18%,respectively.

关 键 词：烟气循环 烧结 CO排放 质量指标 

分 类 号：TQ132.32[化学工程—无机化工]