【作者】 钟秀平； 陈晨； 郭威； 刘昆岩； 刘祥；

【Author】 ZHONG Xiuping;CHEN Chen;GUO Wei;LIU Kunyan;LIU Xiang;College of Construction Engineering,Jilin University;Key Lab of Ministry of Natural Resource for Drilling and Exploitation Technology in Complex Conditions;

【机构】 吉林大学建设工程学院； 自然资源部复杂条件钻采技术重点实验室；

【摘要】 我国目前的CO₂封存能力距"碳达峰"、"碳中和"双碳目标的要求仍有较大差距,多元化的CO₂地下封存方式并举对于助力实现碳达峰、碳中和目标具有重要的推动作用。本文在总结我国目前CO₂地下封存现状、碳源碳汇分布的空间格局、碱性固废处理现状、碱性固废矿化CO₂能力和地下废弃空间治理现状的基础上,提出了通过碱性固废对CO₂进行矿化捕集,再将其以固态的形式输送到地下废弃空间的封存方式,实现"以废治废"。依据现有地下废弃空间总量、距离地级城市周边50 km以内的地下废弃空间量以及省域级地下废弃空间量分布,分别计算了相应的碱性固废包括粉煤灰、钢渣、电石渣封存量及CO₂封存量,从封存总量和空间分布格局两方面证明了上述CO₂封存方式的封存潜力,同时指出了该封存方式尚待开展的研究内容以及地质工程专业的优势。更多还原

【Abstract】 The current CO₂ storage capacity is still far below the requirements of the "carbon peak" and "carbon neutrality" goals.Therefore,the diversified CO₂ underground storage methods play an important role in promoting the realization of dual carbon goals.Based on the summary of the current status of CO₂ underground storage,the distribution spatial pattern of carbon source and sink,the treatment of alkaline industrial solid waste,the CO₂mineralization capacity of alkaline industrial solid waste,and the underground waste space,a storage method of mineralizing CO₂ using alkaline solid waste,and then transporting it into the underground waste space is proposed,which can realize the goal of "treating waste with waste".Based on the total amount of underground waste space,the amount of underground waste space within 50km from prefecture-level cities,and the provincial-level distribution of underground waste space,the corresponding storage capacity of alkaline industrial solid waste including fly ash,steel slag,carbide slag storage,and CO₂ were calculated respectively.The storage potential of the aforementioned method was demonstrated from both the total storage amount and spatial distribution pattern.Moreover,further study of this method and the advantages in geological engineering is pointed out.更多还原