烧结烟气高比例循环技术研究进展与河钢实践  

Research progress and practice of HBIS on high proportion circulation technology of sintering flue gas

作　　者：王新东 王冠翔 李超群[2] 徐文青[2] 朱廷钰[2] 侯长江 WANG Xindong;WANG Guanxiang;LI Chaoqun;XU Wenqing;ZHU Tingyu;HOU Changjiang(HBIS Group Co.,Ltd.,Shijiazhuang 050023,Hebei,China;Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]河钢集团有限公司,河北石家庄050023 [2]中国科学院过程工程研究所,北京100190

出　　处：《钢铁》2025年第2期1-10,共10页Iron and Steel

基　　金：国家重点研发计划资助项目(2023YFC370700);国家自然科学基金资助项目(52300144)。

摘　　要：烧结烟气循环技术已经成为烧结机提高产量、降低CO、减少漏风、降低固体燃耗的重要技术措施。在钢铁工业减污降碳政策驱动下,提高烟气循环率可进一步强化污染物减排和余热利用效果。因此,烧结烟气高比例循环是未来技术发展的重要趋势。系统总结了国内外烟气循环技术发展历程及应用现状,认为烧结烟气循环技术已基本完善,主流技术路线应为高低温烟气组合的烟气内循环方案,根据烧结生产需求不同,在风箱选取数量、位置和布风方案上略有差异。此外,在工艺优化方面,随着烟气循环率提高,应重点关注循环烟气氧气体积分数降低、水体积分数升高和风量热量平衡等问题;在技术应用过程中,应重点关注取气可靠性、管道积灰、风机匹配性、烟气分配和密封罩流场均匀性等工程问题。在对烧结烟气循环技术研究与应用分析的基础上,重点以河钢集团应用的高比例烟气循环工程为例,详细介绍了高比例烟气循环的工艺设计理念。通过循环工艺创新、核心装备突破和运行参数优化,河钢邯钢和唐钢新区稳定实现了30%以上高比例烟气循环,并在46台套烧结机上实现工程推广,为实现烧结机高比例烟气循环技术提供理论依据和实践经验,对大力推动烧结烟气循环技术的推广应用、加快实现钢铁工业减污降碳进程具有重要意义。Sintering flue gas circulation technology has become an important technical measure for sintering machine to increase air volume and output,reduce CO,reduce air leakage,and reduce solid fuel consumption.Driven by the pollution reduction and carbon reduction policy of the iron and steel industry,increasing the flue gas circulation ratio can further strengthen the effect of pollutant emission reduction and waste heat utilization.Therefore,the high proportion of sintering flue gas circulation is an important trend of future technological development.The development and application status of flue gas circulation technology at home and abroad is systematically summarized,it is considered that sintering flue gas circulation technology has been perfect,and the main technical route should be the flue gas internal circulation scheme of high and low temperature flue gas combination.According to the different needs of sintering production,there are some differences in the selection of bellows,locations and air distribution schemes.In addition,in terms of process optimization,with the increase of flue gas circulation ratio,it should pay more attention to problems such as the decrease of oxygen volume fraction,the increase of water volume fraction,and the balance of air volume and heat.In the process of technology application,it should focus on the reliability of gas extraction,ash accumulation in pipeline,fan matching,flue gas distribution and the uniformity of the sealed hood flow field.On the basis of the research and application analysis of sintering flue gas circulation technology,the process design concept of high proportion flue gas circulation is introduced in detail,focusing on the high proportion flue gas circulation project applied by HBIS Group as an example.Through cycle process innovation,core equipment breakthrough and operation parameter optimization,HBIS Hansteel and Tangsteel New District have stably achieved a high proportion of more than 30%flue gas cycle,and achieved project promotion in 46 sintering mach

关 键 词：烧结烟气 内循环 选择性 减污降碳 工业应用 余热利用 高比例循环 钢铁工业 

分 类 号：TF046.4[冶金工程—冶金物理化学]