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Green Hydrogen‐Based Direct Reduction for Low‐Carbon Steelmaking
Steel Research International ( IF 1.9 ) Pub Date : 2020-05-13 , DOI: 10.1002/srin.202000110 Katharina Rechberger 1 , Andreas Spanlang 1 , Amaia Sasiain Conde 1 , Hermann Wolfmeir 2 , Christopher Harris 2
Steel Research International ( IF 1.9 ) Pub Date : 2020-05-13 , DOI: 10.1002/srin.202000110 Katharina Rechberger 1 , Andreas Spanlang 1 , Amaia Sasiain Conde 1 , Hermann Wolfmeir 2 , Christopher Harris 2
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The European steel industry aims at a CO2 reduction of 80–95% by 2050, ensuring that Europe will meet the requirements of the Paris Agreement. As the reduction potentials of the current steelmaking routes are low, the transfer toward breakthrough‐technologies is essential to reach these goals. Hydrogen‐based steelmaking is one approach to realize CO2‐lean steelmaking. Therefore, the natural gas (NG)‐based direct reduction (DR) acts as a basis for the first step of this transition. The high flexibility of this route allows the gradual addition of hydrogen and, in a long‐term view, runs the process with pure hydrogen. Model‐based calculations are performed to assess the possibilities for injecting hydrogen. Therefore, NG‐ and hydrogen‐based DR models are developed to create new process know‐how and enable an evaluation of these processes in terms of energy demand, CO2‐reduction potentials, and so on. The examinations show that the hydrogen‐based route offers a huge potential for green steelmaking which is strongly depending on the carbon footprint of the electricity used for the production of hydrogen. Only if the carbon intensity is less than about 120 g CO2 kWh−1, the hydrogen‐based process emits less CO2 than the NG‐based DR process.
中文翻译：
低碳炼钢的基于绿色氢的直接还原
欧洲钢铁业的目标是到2050年将CO 2减少80-95％，以确保欧洲满足《巴黎协定》的要求。由于当前炼钢路线的减排潜力较低，因此向突破性技术过渡对于实现这些目标至关重要。氢基炼钢是实现CO 2的一种方法贫炼钢。因此，基于天然气（NG）的直接还原（DR）是此过渡第一步的基础。该路线的高度灵活性允许逐渐添加氢气，并且从长远来看，可以使用纯氢气运行该过程。执行基于模型的计算以评估注入氢气的可能性。因此，开发了基于NG和氢的DR模型，以创建新的工艺知识，并能够根据能源需求，CO 2评估这些工艺。还原电位等。检查表明，基于氢的路线为绿色炼钢提供了巨大的潜力，这在很大程度上取决于用于生产氢的电力的碳足迹。仅当碳强度小于约120 g CO 2 kWh -1时，基于氢的过程所排放的CO 2才小于基于NG的DR过程。
更新日期：2020-05-13
中文翻译：
低碳炼钢的基于绿色氢的直接还原
欧洲钢铁业的目标是到2050年将CO 2减少80-95％，以确保欧洲满足《巴黎协定》的要求。由于当前炼钢路线的减排潜力较低，因此向突破性技术过渡对于实现这些目标至关重要。氢基炼钢是实现CO 2的一种方法贫炼钢。因此，基于天然气（NG）的直接还原（DR）是此过渡第一步的基础。该路线的高度灵活性允许逐渐添加氢气，并且从长远来看，可以使用纯氢气运行该过程。执行基于模型的计算以评估注入氢气的可能性。因此，开发了基于NG和氢的DR模型，以创建新的工艺知识，并能够根据能源需求，CO 2评估这些工艺。还原电位等。检查表明，基于氢的路线为绿色炼钢提供了巨大的潜力，这在很大程度上取决于用于生产氢的电力的碳足迹。仅当碳强度小于约120 g CO 2 kWh -1时，基于氢的过程所排放的CO 2才小于基于NG的DR过程。
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