东南大学学报（自然科学版）2025，Vol.55Issue(3)：767-773,7.DOI:10.3969/j.issn.1001-0505.2025.03.017
固废轻骨料酸性烟气碳化固碳机制与性能研究
Study on carbonization curing mechanism and performance of acid flue gas based on solid waste lightweight aggregate
摘要
Abstract
To improve the carbonation absorption rate of industrial solid waste lightweight aggregate,a method of ambient temperature carbonation curing based on coal-fired flue gas was proposed.Multi-source in-dustrial solid waste was utilized as raw materials and CO2 from coal-fired flue gas was absorbed for mineral se-questration to improve the CO2 absorption rate of lightweight aggregate.The mixing ratio of raw materials of the industrial waste and the conditions for carbonation curing were optimized.The effects of acidic impurity gas in the flue gas on carbonation curing were investigated.The reaction mechanism of the multi-component gas during the carbonation curing process was clarified through microstructural characterization and kinetic analysis.The results indicate that the carbonation extent is affected by the acidic gas in the flue gas.Some CaO reacts with SO2 to form the sulfation product CaSO4,resulting in the decrease of the CO2 absorption rate of the lightweight aggregate to 9.89%.NO2 has a relatively minor effect on the carbonation,with the CO2 ab-sorption rate of 11.06%.The kinetic analysis of the carbonation reaction shows that the primary factor influ-encing the carbonation reaction rate is the CO2 diffusion rate.The increase of the gas diffusion depth is benefi-cial for the enhancement of carbonate formation.关键词
工业固废轻骨料/烟气养护/CO2碳化/酸性气体Key words
industrial solid waste lightweight aggregate/flue gas curing/CO2 carbonation/acidic gas分类
资源环境引用本文复制引用
胡悦,邱甜静,剡蓓,还群,姚晓妍,宋敏..固废轻骨料酸性烟气碳化固碳机制与性能研究[J].东南大学学报（自然科学版）,2025,55(3):767-773,7.基金项目
国家自然科学基金资助项目(52222609). （52222609）
