水泥行业碳减排、碳捕集与利用技术发展现状与展望

Current Status and Outlook of Carbon Emission Reduction,Carbon Capture and Utilization in Cement Industry

随着国家碳减排工作的深入推进,水泥行业作为碳排放的重要来源,受到了广泛关注。介绍了水泥生产过程中碳排放源的分类与碳排放的计量方法,碳排放源可分为直接排放源和间接排放源,计量方法主要包括核算法与在线监测法等。概述了国内外水泥行业二氧化碳捕集的主要技术并重点阐述了富氧/全氧燃烧技术在水泥行业的应用现状。目前,水泥行业碳利用的主要技术路径包括混凝土碳化养护、废渣矿化利用及新型固碳材料制备等。未来,水泥行业需在降低碳捕集成本、优化碳计量方法设备、高效利用碳资源等方面持续努力,以进一步促进水泥生产减碳降碳目标的实现。

With the deepening of national carbon dioxide reduction work,the cement industry,as an important source of carbon dioxide emissions,has received widespread attention.This article introduces the classification of carbon emission sources and methods of carbon dioxide emission measurement in the cement production process.Carbon dioxide emission sources can be divided into direct emission sources and indirect emission sources,meanwhile methods of carbon dioxide emission measurement mainly include carbon dioxide emission calculation methods and carbon emission online monitoring measurement methods.This article provides an overview of the main technologies for carbon dioxide capture in the cement industry at home and abroad,with a focus on the current application status of oxygen enriched/full oxygen combustion technology in the cement industry.At present,the main technological paths for carbon dioxide utilization in the cement industry include concrete carbonation curing,waste slag mineralization utilization,and preparation of new carbon fixing materials.In the future,the cement industry needs to continue to make efforts in reducing carbon dioxide capture costs,optimizing carbon dioxide emission measurement methods,and efficiently utilizing carbon dioxide resources to further promote the achievement of carbon reduction goals in cement production.