钢铁-化工联产系统构建及未来发展趋势

Construction and development trend of steel-chemical co-generation system in future

钢铁生产过程中伴随产生大量的副产煤气:焦炉煤气(COG)、高炉煤气(BFG)和转炉煤气(LDG),煤气中含有的一氧化碳、甲烷、氢气等气态碳资源和氢资源是化工生产的良好原材料,目前副产煤气普遍走燃料化的道路,但未来的利用趋势是走向资源化。通过有效地回收富余的焦炉煤气、高炉煤气和转炉煤气并用于化工产品的生产,可以实现钢铁和化工企业协同节能降耗、低碳减排以及绿色发展。概述了国内外钢铁-化工联产及煤气资源化利用的研究与应用现状,提出钢化联产系统构建及评价方法,并对钢化联产系统未来的发展趋势进行了分析,以期为决策者制定相关政策提供理论指导,推动钢铁-化工联产工作有序开展,助力中国实现碳达峰、碳中和目标。

A large amount of by-product gas is generated during the steel production process,including coke oven gas(COG),blast furnace gas(BFG),and converter gas(LDG),which contain gaseous carbon resources such as carbon monoxide,methane,hydrogen,and other hydrogen resources,making them excellent raw materials for chemical production.Currently,by-product gases are generally used as fuel,but the future trend is towards resource utilization.Effectively recovering excess coke oven gas,blast furnace gas,and converter gas to produce chemical products,steel and chemical enterprises can achieve collaborative energy-saving,low-carbon emissions reduction,and green development.The current research and application status of steel-chemical co-production and gas resource utilization at home and abroad were outlined,a method for constructing and evaluating steel-chemical co-production systems was proposed,and the future development trend of steel-chemical co-production systems was analyzed,which aimed to provide theoretical guidance for decision-makers to formulate relevant policies,promote the orderly development of steel-chemical co-production work,and help China achieve its carbon peak and carbon neutrality goals.