A feasible pathway of the coal industry to achieve carbon neutrality through integrated life cycle innovation in China
編號：240
稿件編號：125 訪問權限：僅限參會人
更新：2022-05-12 15:26:00
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口頭報告
報告開始：2022年05月27日 09:50 （Asia/Shanghai）
報告時間：20min
所在會議：[S3] Energy and Sustainable Green Development [S3-2.4] Energy and Sustainable Green Development-2.4
摘要
China has proposed its independent contribution to mitigating climate change, coal reduction has become the mainstream voice. However, few studies have objectively considered coal from the perspective of integrated life cycle and the position in energy system. In the present study, we revealed that (1) Power generation & heating and iron & steel smelting are the highest CO2 emissions sectors. In addition, coal chemical industry and power generation & heating are the two sectors with the highest contribution rate of CO2 emissions. (2) Based on these, innovation of the coal life cycle was suggested by introducing electric furnace smelting scrap, hydrogen production using underground coal gasification (UCG), especially the underground coal gasification-integrated gasification combined cycle (UCG-IGCC). As a result, total coal consumption was reduced to 23.8% of the corresponding pre-renovation amount. The panel threshold model has proved that when the energy intensity falls in the interval 0.363-2.599, UCG-IGCC technology could be the complement in mitigating CO2 emissions. (3) Finally, we show that the faster the cost of CCS (carbon capture and storage) decreases, the earlier UCG-IGCC technology could compete with renewable energy. As the replacement ratio of UCG-IGCC technology increases, the social carbon cost will significantly decrease.
關鍵字
Life cycle; UCG; CCS cost; Threshold effects; Renewable energy
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