矿渣-硫铝酸盐水泥的环境影响及碳减排效应分析  

Environmental Impact of Slag-Calcium Sulfoaluminate Cement and Analysis on Its CO_(2) Mitigation Effect

作　　者：潘志强 李晨[1,2] 蒋正武[1,2] PAN Zhiqiang;LI Chen;JIANG Zhengwu(Key Laboratory of Advanced Civil Engineering Materials of the Ministry of Education,Tongji University,Shanghai 201804,China;School of Materials Science and Engineering,Tongji University,Shanghai 201804,China)

机构地区：[1]同济大学先进土木工程材料教育部重点实验室,上海201804 [2]同济大学材料科学与工程学院,上海201804

出　　处：《硅酸盐通报》2023年第11期3955-3963,共9页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(U22B2076,51878480,52078369,52102027);国家重点研发计划(2022YFC3803104);2021年产业技术基础公共服务平台(2021-H029-1-1);中央高校基本科研业务费专项资金。

摘　　要：基于生命周期评价方法研究了矿渣-硫铝酸盐水泥生产过程的环境影响,采用敏感性分析方法探明了全球变暖潜值(global warming potential,GWP)及初级能源消耗(primary energy demand,PED)两种环境影响的主要来源,并分析了矿渣-硫铝酸盐水泥相比硅酸盐水泥的碳减排效应。结果表明:在矿渣-硫铝酸盐水泥的生产中,熟料煅烧对GWP贡献最高,原料开采对PED贡献最高;敏感性分析显示石灰石用量与煅烧煤炭用量对GWP影响最大,而煤炭与生产过程电力使用对PED影响最大;与硅酸盐水泥相比,矿渣-硫铝酸盐水泥的GWP显著降低,PED略微减少;高矿渣掺量下矿渣-硫铝酸盐水泥力学性能的不足可能影响其应用前景。Life cycle assessment was used to investigate the environmental impacts associated with the production of slag-calcium sulfoaluminate cement.The main sources of global warming potential(GWP)and primary energy demand(PED)were identified through sensitivity analyses.The CO_(2) mitigation effect of slag-calcium sulfoaluminate cement relative to Portland cement was further analyzed.The results show that the clinker calcination stage has the highest contribution to GWP and the raw material extraction stage contributes the most to PED in the production of slag-calcium sulfoaluminate cement.Sensitivity analysis shows that the most important factors influencing GWP are limestone and coal content,and the most important factors influencing PED are coal and electricity.Compared with Portland cement,slag-calcium sulfoaluminate cement shows a significantly lower GWP and a slightly lower PED.The deficiency on mechanical properties at high slag dosages may hinder the application of slag-calcium sulfoaluminate cement as an alternative to Portland cement.

关 键 词：硫铝酸盐水泥 生命周期评价 环境影响 碳减排效应 低碳水泥 矿渣 

分 类 号：TQ172[化学工程—水泥工业]