基于碳足迹分析的废铅蓄电池铅膏再生铅工艺比较  

Comparison of lead recovery processes from spent lead battery paste based on carbon footprint analysis

作　　者：黄进 朱洪 贺双 黄妍 李文豪 陈彪 曹靖[3] HUANG Jin;ZHU Hong;HE Shuang;HUANG Yan;L Wenhao;CHEN Biao;CAO Jing(Ecological and Environmental Affairs Center of Hunan Province,Changsha 410014,China;College of Environment and Resources,Xiangtan University,Xiangtan 411|105,China;College of Chemistry,Xiangtan University,Xiangtan 411105,China)

机构地区：[1]湖南省生态环境事务中心,湖南长沙410014 [2]湘潭大学环境与资源学院,湖南湘潭411105 [3]湘潭大学化学学院,湖南湘潭411105

出　　处：《中国有色冶金》2023年第5期146-152,共7页China Nonferrous Metallurgy

基　　金：国家自然科学基金面上项目(52070159);湖南省高新技术产业科技创新引领计划(2021GK4061)。

摘　　要：基于再生铅行业对生产过程中的碳减排需求,本文采用生命周期评价法研究了废铅蓄电池铅膏钠法预脱硫-低温熔炼、碳酸氢铵法预脱硫-低温熔炼和高温熔炼3种典型再生铅工艺的碳足迹。结果表明,铅膏回收过程中的碳排放主要来源于能源和还原剂的使用;铅膏高温熔炼工艺的碳足迹为876 kg/t铅;相比高温熔炼,低温熔炼工艺对环境影响力低、污染小,铅膏钠法预脱硫-低温熔炼和碳酸氢铵法预脱硫-低温熔炼的碳足迹分别减少了38.9%和25.6%,具有较高的碳减排效益。研究结果为废铅膏回收过程中的碳减排指明了方向,对促进再生铅行业低碳发展具有重要的指导意义。Based on the carbon emission reduction needs of the lead recovery industry in the production process,this article uses the life cycle assessment method to study the carbon footprint of three typical recycled lead processes:sodium method lead paste pre-desulfurization and low-temperature melting,ammonium bicarbonate pre-desulfurization and low-temperature melting,and high-temperature melting.The results indicate that the carbon emissions during the lead paste recovery process mainly come from the use of energy and reducing agents;the carbon footprint of the lead paste high-temperature melting process is 876 kg/t of lead;compared with high-temperature melting,low-temperature melting process has lower environmental impact and less pollution;the carbon footprint of lead paste sodium method pre-desulfurization low-temperature melting and ammonium bicarbonate method pre-desulfurization low-temperature melting have been reduced by 38.9%and 25.6%,respectively,with high carbon emission reduction benefits.The research results point out the direction for carbon abatement in the recovery process of waste lead paste,and have important guiding significance for promoting low-carbon development in the recycled lead industry.

关 键 词：碳足迹 生命周期法 钠法预脱硫 铵法预脱硫 高温熔炼 碳减排 

分 类 号：TF805.2[冶金工程—有色金属冶金] TF812[环境科学与工程—环境工程] X758