云南省水电铝行业碳减排途径和潜力研究

Study on Carbon Emission Reduction Pathway and Potential of Hydropower and Aluminum Industry in Yunnan Province

在“双碳”背景下,电解铝行业面临着巨大的减排压力。在对全国电解铝生产各环节碳排放现状调查的基础上,以云南省为例,对比各环节碳排放水平,并对目前各环节碳减排的研究现状、主要措施及降碳效果进行了评述,查找差距并剖析原因,提出云南省电解铝在碳减排方面的措施并核算减排潜力。结果表明,云南省电解铝产业碳排放占比铝行业比重高于全国平均水平,提高绿电结构后,到2025年电解铝产业碳排放总量将可降低30%以上,远高于国家电解铝电力结构碳减排5.82%的指标。阳极碳耗碳排放是除电力碳排放之外占比最大的,通过利用优质的阳极后可降低碳排放1.20%。通过先进技术革新后铝液综合交流电耗可达到先进清洁生产水平,碳排放可降低0.63%。我国电解铝生产阳极效应全氟化碳排放量远高于其他发达国家,未来5年内云南省电解铝产业阳极效应碳排放将减少1.31%。

Under the background of“dual carbon”,the electrolytic aluminum industry is facing great pressure to reduce emissions.Based on the investigation of the carbon emission status of each link of electrolytic aluminum production in China,the carbon emission level of each link was compared,and the current research status,main measures and carbon reduction effects of each link were reviewed,the gaps were found and the reasons were analyzed,and measures for carbon emission reduction of electrolytic aluminum in Yunnan province were proposed and the emission reduction potential was calculated.The results show that the proportion of carbon emissions of electrolytic aluminum industry in Yunnan Province is higher than the national average level,and the total carbon emissions of electrolytic aluminum industry will be reduced by more than 30% in 2025 after improving the green electricity structure,which is much higher than the national target of 5.82% carbon emission reduction of electrolytic aluminum power structure.Anode carbon consumption carbon emissions account for the largest proportion of carbon emissions in addition to electricity carbon emissions,through the use of high-quality anode can reduce carbon emissions by 1.20%.After the innovation of advanced technology,the comprehensive AC power consumption of liquid aluminum can reach the level of advanced clean production,and the carbon emission can be reduced by 0.63%.The anode-effect perfluorocarbon emissions of electrolytic aluminum production in China are much higher than those of other developed countries,and the anode-effect carbon emissions of electrolytic aluminum industry in Yunnan province will be reduced by 1.31%in the next five years.