能源环境保护2025，Vol.39Issue(4)：74-87,14.DOI:10.20078/j.eep.20250408
碳中和背景下钢厂煤气资源化发展分析与前景
Analyses and Prospects of Steel Mill Gas Resource Utilization and Development Under Carbon Neutrality Background
摘要
Abstract
China is the world's largest producer of steel and chemicals,the production of which heavily relies on coal resources.Although China's steel industry has made considerable progress in reducing energy consumption,the total annual energy consumption continues to rise due to the industrial scale and increased production capacities.The"Carbon Peak and Carbon Neutrality"initiative has accelerated China's energy revolution,driving the development of emerging energy sources and the construction of a modern energy system.Due to limitations in energy resources,it is difficult for China's steel industry to adopt electric arc furnaces(EAFs)on a large scale in the short term.The traditional blast furnace/basic oxygen furnace(BF-BOF)integrated steelmaking route is characterized by a high-carbon energy structure,a significant crude steel output,and complex carbon emission mechanisms.This process also produces steel mill gases,primarily composed of coke oven gas(COG),blast furnace gas(BFG),and Linz-Donawitz gas(LDG).Currently,steel mill gases are primarily used as fuels,a practice with relatively low energy conversion efficiency.However,the hydrogen,carbon monoxide,carbon dioxide,and methane within these gases represent valuable sources for chemical production.Through continuous technological advancements in recovering surplus steel mill gases for use in chemical manufacturing,the steel and chemical industries can collaborate to achieve energy conservation,emission reduction,and sustainable development.This study examines the generation and utilization of gases across various steel production processes in the context of China's energy structure and the development status of its steel and chemical industries.It also reviews domestic and international cases of integrated steel-chemical production and gas resource utilization,analyzes the current state and potential for synthesizing chemical products from steel mill gases,and proposes strategies to accelerate the adoption of new steel-chemical integration technologies.The ultimate goal is to establish a novel,sustainable industrial ecosystem,with the steel industry as the foundation,in synergy with the chemical industry.Achieving the long-term goal of"Carbon Peak and Carbon Neutrality"in China's steel industry will depend on advancing hydrogen metallurgy,carbon capture,utilization,and storage(CCUS)technologies,along with institutional reforms and policy support.In addition,the application and development of life cycle assessment(LCA)research can track the carbon footprint of the steel industry in more detail and systematically analyze its energy consumption and environmental impact.However,systematic LCA analyses of China's steel industry are still limited.Overall,realizing China's carbon neutrality objectives will require broader cross-disciplinary approaches and innovative strategies.关键词
钢厂煤气/钢化联产/碳减排/资源化/"双碳"目标Key words
Steel mill gas/Steel chemical integration/Carbon emission reduction/Resource utilization/Dual carbon goals分类
资源环境引用本文复制引用
左慧琮,江磊,李丹阳,王华,李孔斋..碳中和背景下钢厂煤气资源化发展分析与前景[J].能源环境保护,2025,39(4):74-87,14.基金项目
国家自然科学基金资助项目(52174279,52266008) （52174279,52266008）
