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CO_2 removal in the iron and steel industry

机译：钢铁行业中的CO_2去除

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摘要

CO_2 removal in electricity production has received a lot of attention, but CO_2 removal in iron and steel production has received little attention as of yet. This option is analysed in more detail in this paper. The results suggest that a CO_2 capture system, based on a shift reaction and physical absorption, in combination with underground or oceanic carbon storage, could be attractive. Costs are estimated to amount to 10.3-18.8 US$/t CO_2, depending on the iron production process. This cost level is similar to or even lower than the cost level for CO_2 removal for new coal fired power plants. Global CO_2 emissions could be reduced by 4%, Japanese CO_2 emissions could be reduced by 6.5% (80 Mt/yr) in case this option were applied to its full extent by the iron and steel industry. The use of this option is currently limited by uncertainties regarding CO_2 storage potentials in deep aquifers and the environmental impacts of oceanic storage. It is recommended to study these issues in more detail.
机译：电力生产中的CO_2去除受到了广泛关注，但钢铁生产中的CO_2去除迄今仍未引起关注。本文将更详细地分析此选项。结果表明，基于转移反应和物理吸收的CO_2捕集系统与地下或海洋碳存储相结合可能具有吸引力。成本估计为10.3-18.8美元/吨CO_2，具体取决于铁的生产过程。该成本水平与新建燃煤电厂的CO_2去除成本水平相似甚至更低。如果钢铁行业完全采用此方案，则全球CO_2排放量可减少4％，日本CO_2排放量可减少6.5％（80吨/年）。当前，由于有关深层含水层中CO_2储存潜力的不确定性以及海洋储存对环境的影响，限制了该选项的使用。建议更详细地研究这些问题。

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