稀土耐磨钢全生命周期碳排放及减碳路径分析

Analysis on Carbon Emission and Carbon Reduction Path in Full Life Cycle of Rare Earth Wear Resistant Steel

包钢宽厚板生产线生产的稀土耐磨钢是国家级绿色设计产品,文章通过对该产品进行生命周期评价(LCA),分析产品碳排放在企业内部、上游负荷、运输阶段和副产品循环利用四个阶段的分布情况,以及企业内部各工序的碳排放情况,对稀土耐磨钢产品降碳技术路径进行讨论。结果表明,稀土耐磨钢的碳排放主要在企业内部,约占78.86%,炼铁、烧结、焦化等工序以及企业内部的能源负荷是降碳的重点,副产品的回收利用对降碳具有积极的作用,先进技术的应用使大幅降碳成为可能。高性能稀土耐磨钢的开发在企业内部会增加碳排放,但对社会的节能降碳效果显著,大力推广应用稀土耐磨钢对我国实现碳中和有积极的作用。

The rare earth wear resistant steel produced by the production line of wide and thick plate of Baotou Steel is the national green design product.In this paper,the distribution of carbon emissions for products in such four stages as within enterprise,load of upstream,transportation stage and recycling by products and carbon emission of each working procedure in enterprise are analyzed as well as the technological paths of carbon drop for rare earth wear resistant steel products are discussed through the life cycle assessment(LCA)of product.The results showed that the carbon emission of rare earth wear resistant steel was mainly in enterprise,accounted for about 78.86%so that such processes as the iron making,sintering and coking as well as energy load in enterprise were the key points of carbon drop,recycle of by products played an active role in carbon drop and applications of advanced technologies made significant carbon drop possible.The carbon emissions in enterprise will be increased by developing high-performance rare earth wear resistant steel,but the effects of energy conservation and carbon drop for the society are significant so that it plays an active role in realizing carbon neutrality in our country to vigorously promote and apply rare earth wear resistant steel.