Carbon accounting and reduction potential analysis of various aluminum production methods
This study is based on the life cycle concept,CO2 emission of six aluminum production methods constructed from aluminum production processes and power structures was calculated,and the reasons for the variance were analyzed.At the same time,different low-carbon paths were set to dig into the carbon reduction potential of aluminum industry.The result showed that:the Bayer process-hydropower method had the least CO2 emissions per ton of aluminum and the sinter process-thermal power method had the most CO2 emissions per ton of aluminum,which were 1.86 × 103 kg and 1.20 × 104 kg,respectively.With the same power structure,different inputs of fossil fuels,electricity,alumina,and other raw materials were the main factors affecting CO2 emission in alumina production and electrolytic aluminum process.With the consistent alumina production process,hydropower replacing thermal power can reduce the CO2 emissions of aluminum production by about 34％～43％.Moreover,according to the analysis of carbon reduction path,the CO2 emission reduction effect under the EGP-CP path was the best,and CO2 emissions per ton of aluminum can be reduced to 7.75×103 kg,which is 15.68％ less than the BAU.
万方数据
维普
