A feasible pathway of the coal industry to achieve carbon neutrality through integrated life cycle innovation in China
Life cycle; UCG; CCS cost; Threshold effects; Renewable energy
（3）能源与可持续绿色发展 > 2. 能源资源管理
全文录用
思遥 王 / 中国矿业大学
应宏 汪 / 中国矿业大学
浮 陈 / 中国矿业大学
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.