摘要
气化渣是煤化工行业的重要副产物,富含硅、碳、钙、镁等元素且具有特殊的矿物构成,已成为CO_(2)捕集与矿化利用的重要原材料。以气化渣为前驱体用于碳捕集材料的制备和CO_(2)的矿化利用,可显著降低传统碳捕集与矿化利用技术成本,实现气化渣的高附加值利用,推动煤化工行业减污降碳、协同增效。该文综述了气化渣在CO_(2)捕集与矿化利用领域的研究进展,详细阐述了基于气化渣的硅基、炭基、炭灰复合碳捕集材料的制备策略和机理,总结对比了不同处理方式对材料结构特性和碳捕集能力的影响,并介绍了气化渣用于CO_(2)矿化利用的不同技术原理及研究进展;最后,分析了气化渣在碳捕集和矿化利用领域研究中存在的问题,并提出可在性能提升、工艺优化、碳捕集材料制备与矿化利用耦合技术开发和经济可行性评估等方面开展更加深入的研究。
Coal gasification slag(CGS),an important by-product of coal chemical industry,is rich in elements such as silicon,carbon,calcium and magnesium with a unique mineral composition,and has become an important raw material for CO_(2) capture and mineralization.Utilization of CGS as a precursor for CO_(2) capture material synthesis and CO_(2) mineralization can significantly reduce the costs of traditional technologies,achieve the high-value utilization of CGS,and promote the synergistic reduction of pollution and CO_(2) emissions in the coal chemical industry.Herein,a comprehensive review on the research progress regarding CO_(2) capture and mineralization using CGS was provided.The synthetic strategies and mechanisms of silicon-based,carbon-based,and carbon-ash composite adsorbents derived from CGS for CO_(2) capture were presented in detailed,while the effects of different treatments on the structural properties and CO_(2) capture capacity of adsorbents were summarized and compared.In addition,the mechanisms and the research progress on different technologies using CGS for CO_(2) mineral carbonation were introduced.Finally,the problems existing in the application research of CGS in CO_(2) capture and mineralization were discussed.It was recommended that more in-depth studies should be conducted focusing on performance enhancement,preparation process optimization,coupling technology development for the preparation of CO_(2) capture materials and mineralization from CGS,as well as economic feasibility evaluations.
作者
张军平
游韶玮
李建霖
任荣杰
孙廷兰
陈超
ZHANG Junping;YOU Shaowei;LI Jianlin;REN Rongjie;SUN Tinglan;CHEN Chao(CECEP Engineering Technology Research Institute Co.,Ltd.,Beijing 100082,China;Research Institute of Solid Waste Management,Chinese Research Academy of Environmental Sciences,Beijing 100012,China)
出处
《精细化工》
北大核心
2025年第12期2553-2568,共16页
Fine Chemicals
基金
国家重点研发计划项目(2022YFC390150203)。
