辽宁省重点钢铁企业碳排放与配额分配分析

 钢铁行业能耗大、碳排放高，是碳交易市场建设的重要参与者。分析辽宁省重点钢铁企业的碳排放核查数据发现，2013-2017年辽宁省重点钢铁企业主营产品粗钢产量为5465.49~5876.37万t；辽宁省重点钢铁企业纳入碳排放权交易体系的碳排放总量为10046.39~12468.14万t，碳排放强度呈下降趋势。从碳排放类别看，化石燃料燃烧产生的碳排放量最多，占企业总排放量的80%以上，其次是净购入电力、热力使用产生的碳排放量，约占13%。从不同工序看，炼铁工序碳排放量最大，平均占比40.82%，且呈明显下降趋势，其他辅助工序碳排放呈大幅度上升趋势。企业碳排放总量和总能耗均与主营产品产量呈显著线性正相关关系。以2017年辽宁省钢铁行业碳排放量为基础，发现纳管的15家企业的配额总量约为10700.51万tCO₂，总体表现为配额盈余。

The energy consumption and carbon emission verification of key iron and steel plants in Liaoning province

With its large amount of the fossil energy consumption and the high carbon emission, the steel industry is an important partner in the construction of the carbon trading market. This paper analyzes the verification of the CO2 emission of the iron and steel plants in Liaoning province, and it is found that the main product of the crude steel is 54.6549~58.7637 Mt from 2013 to 2017; the total carbon emissions of the iron and steel plants in Liaoning province, included in the Carbon Emission Trading System (ETS), are 106.021~124.6814 Mt. The CO2 emissions intensity is in a decreasing tendency. From the perspective of the different sectors, the fossil fuel combustion CO2 emissions accounts for more than 80% of the total emission, followed by the emissions of net purchases of electricity and heat equivalent CO2, accounting for about 13%. From the perspective of the different processes, the iron making produces the most carbon emissions, with the average proportion of 40.82%, in a significant decrease trend. The carbon emissions of the other auxiliary parts increase significantly. The Pearson correlation analysis shows that the total CO2 emission, and the total energy consumption have a close linear correlation with the main products. Based on the carbon emissions of the iron and steel industry in 2017, it is found that the total quota of 15 iron and steel plants in Liaoning province will be 107.0051 Mt CO2, and the overall performance is quota surplus.