基于CGE模型的高炉+转炉炼钢企业碳减排效益评价研究

Research on Carbon Emission Reduction Benefit Evaluation of Blast Furnace+converter Steelmaking Enterprises Based on CGE Model

高炉+转炉炼钢企业碳减排效益受到总碳配额及碳配额分配量平衡关系的影响,二者的平衡关系不明确会降低碳减排效益评价效果,因此提出基于CGE模型的高炉+转炉炼钢企业碳减排效益评价方法。采用CGE模型对高炉+转炉炼钢企业总碳配额、碳配额分配之间的平衡关系进行有效分析,结合S-SBM模型与三阶段DEA方法,评价分析福建省五个地级市在2016—2021年的碳减排效益。经分析发现各地级市之间的碳减排效益存有差异性,其中福州及厦门两地高炉+转炉炼钢企业碳减排效益最高,而剩余地区的碳减排效益均在0.8以下,碳减排效益较低。从地理位置角度来看,福州及厦门地区的经济辐射效应会影响其余城市的碳减排效益,是造成周边城市碳减排效率低的主要原因。

The carbon emission reduction benefits of blast furnace+converter steelmaking enterprises are affected by the balance relationship between total carbon quota and carbon quota allocation.The unclear balance relationship between the two will reduce the evaluation effect of carbon emission reduction benefits.Therefore,the evaluation method of carbon emission reduction benefits of blast furnace+converter steelmaking enterprises based on CGE model is proposed.The CGE model is used to effectively analyze the balance between the total carbon quota and carbon quota allocation of blast furnace+converter steelmaking enterprises,and the carbon emission reduction benefits of five prefecture-level cities in Fujian Province from 2016 to 2021 are evaluated and analyzed in combination with the S-SBM model and the three-stage DEA method.Through analysis,it is found that there are differences in carbon emission reduction benefits among prefecture-level cities.Among them,Fuzhou and Xiamen have the highest carbon emission reduction benefits of blast furnace+converter steelmaking enterprises,while the carbon emission reduction benefits of the remaining regions are below 0.8,and the carbon emission reduction benefits are low.From the perspective of geographical location,the economic radiation effect of Fuzhou and Xiamen will affect the carbon emission reduction efficiency of other cities,which is the main reason for the low carbon emission reduction efficiency of surrounding cities.