为了研究钢铁行业高炉-转炉长流程中的碳流动过程,根据碳元素平衡原理,绘制了钢铁企业高炉-转炉长流程的物质流动图和碳素流桑基图,并分析其流动特征.通过分析各工艺的CO2排放量和减排潜力,强调在高炉-转炉长流程中减少碳排放的重要性.结果显示,高炉-转炉长流程的碳排放强度大约在2 000 kg CO2/t(粗钢)左右波动,其中高炉炼铁工序的碳排放量最大,建议采用氧气高炉、氢能冶炼、余热回收等技术来降低碳排放量,推动钢铁行业向低碳发展方向迈进.
Analysis of CO2 emissions in the blast furnace-converter long process
In order to study the carbon flow process in the long process of the blast furnace-converter in the steel industry,based on the principle of carbon element balance,the material flow diagram and carbon flow Sankey diagram of the long process of blast furnace-converter in steel enterprises were drawn,and their flow characteristics were analyzed.By analyzing the CO2 emissions and emission reduction potential of each process,the importance of reducing carbon emissions in the long process of blast furnace-converter is emphasized.The results show that the carbon emission intensity of the blast furnace-converter long process fluctuates around 2,000 kg CO2/(t crude steel),with the carbon emissions from the ironmaking process in the blast furnace being the highest.It is recommended to adopt technologies such as oxygen blast furnaces,hydrogen metallurgy,and waste heat recovery to reduce carbon emissions and promote the steel industry towards a low-carbon development direction.
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