China aims to peak CO_(2)emissions before 2030 and to achieve carbon neutrality before 2060;hence,industrial sectors in China are keen to figure out appropriate pathways to support the national target of carbon neutra...China aims to peak CO_(2)emissions before 2030 and to achieve carbon neutrality before 2060;hence,industrial sectors in China are keen to figure out appropriate pathways to support the national target of carbon neutrality.The objective of this study is to explore near-zero emission pathways for the steel industry of China through a detailed technology assessment.The innovative technology development has been simulated using the AIM-China/steel model,developed by including material-based technologies and optimal cost analysis.Six scenarios have been given in terms of different levels of production output,emission reduction and carbon tax.Near-zero emission and carbon tax scenarios have shown that China's steel industry can achieve near-zero emission using electric furnaces and hydrogen-based direct reduction iron technologies with policy support.Based on these technologies,minimised production costs have been calculated,revealing that the steel produced by these technologies is cost-effective.Moreover,the feedstock cost can play a key role in these technology portfolios,especially the cost of scrap,iron ore and hydrogen.In addition,the feedstock supply can have strong regional effects and can subsequently impact the allocation of steelmaking in the future.Therefore,China can achieve near-zero emissions in the steel industry,and electric furnace and hydrogen-based direct reduction iron technologies are crucial to achieving them.展开更多
针对当前近零碳园区综合评价指标体系缺失的问题,首先,构建了包含7项一级指标和20项二级指标的评价体系,并明确了指标内涵及计算方法;其次,通过主客观结合的集值迭代–批判法(Set value iteration,SVI;Criteria importance through inte...针对当前近零碳园区综合评价指标体系缺失的问题,首先,构建了包含7项一级指标和20项二级指标的评价体系,并明确了指标内涵及计算方法;其次,通过主客观结合的集值迭代–批判法(Set value iteration,SVI;Criteria importance through intercrieria correlation,CRITIC)确定指标主客观权重,根据矩阵论基本理论计算各指标组合权重,从而避免了单一赋权的片面性;然后,分别研究定性和定量指标的模糊综合计算方式,构建了综合评价模型;最后,以某近零碳园区运行数据为例进行了验证。验证结果表明,所提方法能较为全面地对近零碳排放园区建设情况进行科学评价。展开更多
基金This work was supported by Korea Environment Industry&Technology Institute(KEITI)through Climate Change R&D Project for New Climate Regime,funded by Korea Ministry of Environment(MOE)(2022003560012).
文摘China aims to peak CO_(2)emissions before 2030 and to achieve carbon neutrality before 2060;hence,industrial sectors in China are keen to figure out appropriate pathways to support the national target of carbon neutrality.The objective of this study is to explore near-zero emission pathways for the steel industry of China through a detailed technology assessment.The innovative technology development has been simulated using the AIM-China/steel model,developed by including material-based technologies and optimal cost analysis.Six scenarios have been given in terms of different levels of production output,emission reduction and carbon tax.Near-zero emission and carbon tax scenarios have shown that China's steel industry can achieve near-zero emission using electric furnaces and hydrogen-based direct reduction iron technologies with policy support.Based on these technologies,minimised production costs have been calculated,revealing that the steel produced by these technologies is cost-effective.Moreover,the feedstock cost can play a key role in these technology portfolios,especially the cost of scrap,iron ore and hydrogen.In addition,the feedstock supply can have strong regional effects and can subsequently impact the allocation of steelmaking in the future.Therefore,China can achieve near-zero emissions in the steel industry,and electric furnace and hydrogen-based direct reduction iron technologies are crucial to achieving them.
文摘针对当前近零碳园区综合评价指标体系缺失的问题,首先,构建了包含7项一级指标和20项二级指标的评价体系,并明确了指标内涵及计算方法;其次,通过主客观结合的集值迭代–批判法(Set value iteration,SVI;Criteria importance through intercrieria correlation,CRITIC)确定指标主客观权重,根据矩阵论基本理论计算各指标组合权重,从而避免了单一赋权的片面性;然后,分别研究定性和定量指标的模糊综合计算方式,构建了综合评价模型;最后,以某近零碳园区运行数据为例进行了验证。验证结果表明,所提方法能较为全面地对近零碳排放园区建设情况进行科学评价。
