当前形势下烟气循环烧结工艺发展现状及展望
Development status and prospect of flue gas recirculation sintering process under current situation
陈富松 1袁亚强 1康宏毅 1庞焯刚 1郭豪 2高彦 3左海滨1
作者信息
- 1. 北京科技大学绿色低碳钢铁冶金全国重点实验室,北京 100083
- 2. 中冶京诚工程技术有限公司,北京 100176
- 3. 河北省低碳冶金及过程控制技术创新中心,河北秦皇岛 066000
- 折叠
摘要
目前钢铁工业对节能减排的生产要求越发严格,减污降碳协同治理成为当前行业发展的新方向,尤其是烧结工序,存在固体燃耗高和各类污染物排放量大等问题.烟气循环烧结工艺同时具备降低固体燃耗和减少污染物排放等优点.为此,总结了烧结烟气中各污染物的生成机理、烟气循环烧结后的脱除机理以及进行循环的烟气中各组分变化对烧结生产的影响,从而对烟气循环烧结工艺的技术原理进行说明,为烟气循环烧结工艺的合理应用提供理论支持.同时,系统总结了国内外典型工艺的应用效果和存在的问题.结合烟气循环烧结工艺原理与烧结烟气中主要组分的排放规律,得出精细化选择性烟气循环工艺能实现高效节能减排的结论.最后,基于当前减污降碳需求进一步提升的形势,提出烟气循环烧结工艺未来进步的可行性方案,为该工艺在烧结生产中的普及应用和优化改进提供参考.
Abstract
Currently,the production requirements for energy conservation and emission reduction in China's steel in-dustry are becoming increasingly strict.Collaborative treatment of pollution and carbon reduction has become a new direction for industry development,especially in the sintering process,which has problems such as high solid fuel consumption and large emissions of various pollutants.The flue gas recirculating sintering process has the advanta-ges of reducing solid fuel consumption and reducing pollutant emissions.Therefore,the generation mechanism of va-rious pollutants in sintering flue gas,the removal mechanism after flue gas recirculation sintering,and the impact of changes in each component of the recirculating flue gas on sintering production are summarized,so as to explain the technical principle of flue gas recirculation sintering process and provide theoretical support for the reasonable appli-cation of flue gas recirculation sintering process.At the same time,a systematic summary is also conducted on the application effects and existing problems of typical processes at home and abroad.Based on the principle of flue gas recirculation sintering process and the emission law of main components in sintering flue gas,it is concluded that the refined selective flue gas recirculation process can achieve efficient energy conservation and emission reduction.Fi-nally,based on current situation of further increasing demand for pollution reduction and carbon reduction,a feasible plan for the future progress of flue gas recirculation sintering process is proposed,providing reference for the wide-spread application and optimization improvement of this process in sintering production.
关键词
铁矿石/烧结/减污降碳/烟气循环/发展现状Key words
iron ore/sintering/pollution and carbon reduction/flue gas recirculation/development status引用本文复制引用
基金项目
国家自然科学基金资助项目(U1960205)
中国五矿战略前沿技术研究项目(2020ZXA01)
出版年
2024
NETL
NSTL
万方数据