摘要
建立工业行业二氧化碳排放核算方法对应对气候变化有重要的指导意义,本研究基于再生铅行业碳排放核算标准化发展状况,梳理并确定了再生铅行业碳排放核算方法,并以废铅蓄电池清洁回收技术(自动破碎分选-铅膏预脱硫-低温熔炼)为代表,以各回收工段为核算单元,对全工艺流程进行碳排放核算,填补了再生铅领域碳排放量评价标准的空白,有利于指导和规范再生铅行业的生产和发展。核算结果显示,废铅蓄电池处理能力为15万t/a的机械破碎分选-铅膏预脱硫-低温熔炼的再生铅清洁生产工艺,废铅蓄电池破碎分选阶段、铅栅熔铸阶段、粗铅电解精炼阶段、铅膏预脱硫阶段、脱硫铅膏低温熔炼阶段的碳排放量分别为0.380 t CO_(2)/h、0.460 t CO_(2)/h、0.860 t CO_(2)/h、1.900 t CO_(2)/h、5.047 t CO_(2)/h,这些二氧化碳排放指标也可以作为同行业、同类工艺企业的二氧化碳排放核算系数。基于碳排放核算结果,分析了再生铅行业碳排放特征,由燃料燃烧引起的直接排放是再生铅清洁工艺最大的碳排放源,其排放量占总碳排放量的31.57%;低温熔炼工段是再生铅清洁工艺最大的碳排放工段,其碳排放占总碳排放量的58.36%。
The establishment of a carbon dioxide emission accounting method in the industrial industry is of important guiding significance for dealing with climate change.Based on the standardised development of carbon emission accounting in the recycled lead industry,the carbon emission accounting method of the recycled lead industry has been sorted out and determined.With the clean recycling technology of waste lead batteries(automatic crushing and sorting-lead paste pre-desulphurisation-low-temperature melting Refining)is represented,and carbon emissions are accounted for the whole process with each recycling section as the accounting unit.We are committed to filling the gap in the carbon emission evaluation standards in the field of recycled lead,which is conducive to guiding and standardising the production and development of the recycled lead industry.The accounting results show that the processing capacity of waste lead batteries is 150000 t/a of mechanical crushing and sorting-lead paste pre-desulphurisation-low-temperature smelting of recycled lead clean production process,waste lead batteries in the crushing and sorting stage,lead grid melting stage,crude lead electrolytic refining stage,lead paste pre-desulphurisation stage,desulphurisation lead paste low-temperature melting stage carbon The emissions are 0.380 t CO_(2)/h,0.460 t CO_(2)/h,0.860 t CO_(2)/h,1.900 t CO_(2)/h,5.047 t CO_(2)/h respectively.These carbon dioxide emission indicators can also be used as the same industry and similar technology enterprises.The carbon dioxide emission accounting coefficient of the industry.Based on the results of carbon emission accounting,the characteristics of carbon emissions in the recycled lead industry are analysed.Direct emissions caused by fuel combustion are the largest source of carbon emissions in the recycled lead cleaning process,accounting for 31.57%of the total carbon emissions.The low-temperature smelting section is the largest carbon emission section of the recycled lead cleaning process,and its carbon emissions account for 58.36%of the total carbon emissions.
作者
贺双
王诗溶
陈彪
李心晴
刘兴旺
张俊丰
HE Shuang;WANG Shirong;CHEN Biao;LI Xinqing;LIU Xingwang;ZHANG Junfeng(College of Environment and Resource,Xiangtan University,Xiangtan 411105,China;College of Chemistry,Xiangtan University,Xiangtan 411105,China)
出处
《中国有色冶金》
北大核心
2025年第4期100-107,共8页
China Nonferrous Metallurgy
基金
国家自然科学基金面上项目(52070159)。
关键词
再生铅
废铅蓄电池
碳排放
碳核算
碳减排
recycled lead
waste lead-acid batteries
carbon emissions
carbon accounting
carbon emission reduction
