基于生命周期的工业副产石膏制备胶凝材料碳足迹评价  

Carbon Footprint Assessment of Cementitious Materials Prepared from Industrial By-Product Gypsum Based on Life Cycle

作　　者：李莹 段鹏选 倪文[1] 张大江 LI Ying;DUAN Pengxuan;NI Wen;ZHANG Dajiang(School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China;College of Civil Engineering and Architecture,Guilin University of Technology,Guilin 541004,China;Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京科技大学土木与资源工程学院,北京100083 [2]桂林理工大学土木与建筑工程学院,桂林541004 [3]北京工业大学材料与制造学部,北京100124

出　　处：《硅酸盐通报》2023年第6期1921-1930,共10页Bulletin of the Chinese Ceramic Society

基　　金：广西科技计划(桂科AB22035064)。

摘　　要：在“两山”理论、“双碳”目标的新形势下,我国发布了一系列政策及优惠条件鼓励以工业副产石膏为原料制备石膏胶凝材料,包括建筑石膏、α型高强石膏、混合相石膏等。迄今为止,国内鲜有关于石膏胶凝材料的碳足迹核算报告。本文基于生命周期评价方法,针对工业副产石膏制备石膏胶凝材料建立碳足迹核算模型,并以磷石膏制备α型高强石膏为例进行验证。结果表明,α型高强石膏产品原料获取、生产、运输三个阶段的碳足迹分别为3.95、288.04、14.31 kg CO_(2) eq/t,总量为306.3 kg CO_(2) eq/t,其中生产阶段碳排放量最大,是降低能耗、减少碳排放、节约成本的重要环节。本文建立的碳足迹核算模型适用于建筑石膏、α型高强石膏、无水石膏、混合相石膏等产品碳足迹核算。Under the new situation of “Two Mountains” theory and “Dual Carbon” goals,our country has issued a series of policies and preferential conditions to encourage the preparation of gypsum cementitious materials from industrial by-product gypsum,including calcined gypsum,α high-strength gypsum,mixed phase gypsum,et al.So far,there are few carbon footprint calculation reports on gypsum cementitious materials in China.In this paper,the carbon footprint calculation model of gypsum cementitious materials prepared from industrial by-product gypsum was established based on life cycle assessment method,which was demonstrated through the production of α high-strength gypsum from phosphogypsum.The results show that the carbon footprint in three stages of raw material acquisition,production and transportation of α high-strength gypsum product is 3.95,288.04 and 14.31 kg CO_(2) eq/t,respectively,and the total emission is 306.3 kg CO_(2) eq/t.The carbon emission in production stage is the largest,which is an important segment to reduce energy consumption,reduce carbon emission and save costs.The carbon footprint calculation model established in this paper is applicable to the carbon footprint calculation for calcined gypsum,α high-strength gypsum,anhydrite,mixed phase gypsum,et al.

关 键 词：工业副产石膏 石膏胶凝材料 α型高强石膏 生命周期评价 碳足迹 

分 类 号：TQ177.3[化学工程—硅酸盐工业]