Mitigation of CO₂ emissions in the industrial sector is one of the main climate challenges for the coming decades. This work, carried out within the STEPWISE H2020 project, performs a preliminary techno-economic assessment of the Sorption Enhanced Water Gas Shift (SEWGS) technology when integrated into the iron and steel plant to mitigate CO₂ emissions. The SEWGS separates the CO₂ from the iron and steel off-gases with residual energy content (i.e. Blast Furnace Gas, Basic Oxygen Furnace Gas and Coke Oven Gas) and the produced H₂ is sent to the power generation section to produce the electricity required by the steel plant, while the CO₂ is compressed and transported for storage. Detailed mass and energy balances are performed together with a SEWGS cost estimation to assess the energy penalty and additional costs related to CO₂ capture. Results demonstrates the potential of SEWGS to capture over 80 % of CO₂ in the off-gases, which results in entire plant CO₂ emission reduction of 40 % with a Specific Energy Consumptions for CO₂ Avoided (SPECCA) around 1.9 MJ/kgCO₂. SEWGS outperforms a commercial amine scrubbing technology which has a SPECCA of 2.5 MJ/kgCO₂ and only 20 % of CO₂ avoided. The cost of CO₂ avoided calculated on the basis of a fully integrated steel plant is around 33 €/t_CO2 compared to 38 €/t_CO2 of the amine technology.

在未来几十年中，减少工业部门的CO ₂排放是主要的气候挑战之一。这项工作在STEPWISE H2020项目中进行，当将其结合到钢铁厂中以减轻CO ₂排放时，对吸附增强水煤气变换（SEWGS）技术进行了初步的技术经济评估。SEWGS将具有残留能量含量的钢铁废气（即高炉煤气，碱性氧气炉煤气和焦炉煤气）中的CO ₂分离出来，并将产生的H ₂发送到发电部分以产生所需的电力。由钢铁厂，而CO ₂压缩并运输以进行存储。详细的质量和能量平衡与SEWGS成本估算一起执行，以评估能量损失和与CO ₂捕集有关的额外成本。结果表明，SEWGS具有捕获废气中80％以上的CO ₂的潜力，从而使整个工厂的CO ₂排放减少了40％，并且避免了特定的CO ₂能耗（SPECCA）约为1.9 MJ / kgCO _2。。SEWGS优于商业胺洗涤技术，该技术的SPECCA为2.5 MJ / kgCO ₂，仅避免了20％的CO ₂。CO ₂的成本回避计算一个完全集成的钢铁厂的基础上为大约33€/吨_{CO 2}相比38€/吨_{CO 2}的胺的技术。