Cement industry is one of the major industries with high energy consumption and high pollutants emissions,and its carbondioxide (CO2) emission control has become a hotspot in the academia and industry. Oxy-fuel combustion technology is one of the mostimportant technologies for high-efficiency and low-cost carbon dioxide capture,utilization and storage (CCUS) in cement industry,which is of great significance for reducing CO2 emission and enhancing cement clinker production. This paper systematically reviews theresearch progresses of oxygen-enriched combustion,partial oxy-fuel combustion and full oxy-fuel combustion in terms of experimentalstudies,numerical simulations,process optimization and industrial application. Oxygen-enriched combustion improves combustiontemperature,heat efficiency and clinker production by increasing the oxygen volume fraction in the combustion air,and the optimaloxygen volume fraction is 27%-30%. It has been industrially applied in many cement production lines and has realized the fuel saving andyield enhancement. Partial oxy-fuel combustion is a CO2 capture technology with utilizing oxy-fuel combustion in the calciner,which canenhance CO2 volume fraction and reduce NOx emissions,but the calciner temperature needs to be raised appropriately in order to maintain the same calcination degree of limestone,and the fuel consumption will be increased. Full oxy-fuel combustion is used in boththe calciner and rotary kiln,which can obtain a high CO2 volume fraction in flue gas,and it is the future direction of CO2 capturetechnology in cement industry. In order to achieve the same furnace temperature and product quality as those in air atmosphere,theoverall oxygen volume fraction of full oxy-fuel combustion needs to be increased to 27%-29%,and it is also necessary to optimize thepartitions of the oxygen volume fractions of primary/secondary/tertiary oxidizer streams both in the rotary kiln and the calciner oxy-fuelcombustors. The techno-economic analysis of partial and full oxy-fuel combustion in cement industry shows that the CO2 capture cost is200-250 yuan/ton,which is lower than that for post-combustion carbon capture technology,indicating that oxy-fuel combustiontechnology is better in the economic performance. In the future,the CO2 capture technology of oxy-fuel combustion in cement industrywill be further developed in the direction of high efficiency,low cost and low energy consumption,focusing on research and developmentof the key technologies of full oxy-fuel combustion,low-cost oxygen generation technologies and deep integration with renewable energypower to gas and renewable synthetic fuels,in order to finally realize CCUS and net-zero CO2 emission in cement industry.

周月桂(1972—),男,湖北京山人,教授,博士。E-mail:ygzhou@sjtu.edu.cn

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ZHOU Yuegui,WANG Yuting,HUANG Guanshuo,et al. Research progresses on oxy-fuel combustion carbon dioxidecapture technologies in cement industry[J].Clean Coal Technology,2025,31(4):163−180.