摘要
四氟化碳(CF_(4))是《京都协议书》规定与管控的典型非二氧化碳超强温室气体之一。随着铝电解、半导体等工业活动规模的不断扩大,CF_(4)排放量持续增加,加剧了全球气候变化,影响着人类赖以生存的环境质量,同时阻碍了相关产业的可持续发展。随着碳达峰行动方案的落实,加大CF_(4)等非二氧化碳温室气体的控制力度已成为我国“碳达峰碳中和”战略目标达成的重要支撑。本文对CF_(4)的来源进行了系统地分析,阐述了CF_(4)主要行业来源、排放特征与生成机制。在综述了CF_(4)源头减排措施的基础上,分析了CF_(4)源头减排的局限性与末端处理的必然趋势。重点针对CF_(4)的末端处理,从物理和化学处理技术两大类方向总结了深冷分离、吸附法、膜分离、热力燃烧、热催化分解、等离子体高能分解、电催化分解等七种末端处理技术,阐述了相关方法的基本原理、应用案例和技术发展现状;根据各项技术的分解效率、温度、产物、能耗等参数,对比分析了技术间的优缺点;基于末端处理技术的行业需求和应用场景,研判了CF_(4)末端处理技术的未来挑战。
Tetrafluoromethane(CF_(4))is one of the typical non-carbon dioxide gases with super strong greenhouse effects,legally regulated by Kyoto Protocol.CF_(4)emissions continue to increase with the continuous expansion of industrial activities such as aluminum electrolysis and semiconductor,resulting in the aggravation of global climate change and deterioration of environment on which human survival depends,as well as the hindering of the sustainable development of related industries.Intensifying the control of non-carbon dioxide greenhouse gases such as CF_(4)is an important part of China's"carbon peaking and carbon neutrality goals"strategic objectives with the implementation of the action plan.Firstly,the sources of CF_(4)are analyzed systematically,and the main industry sources,emission characteristics and generation mechanism of CF_(4)are expounded in this paper.Then,the limitation of source emission reduction of CF_(4)and the inevitable trend of pipe-end treatment are emphatically analyzed after summarizing the status of source emission reduction measures of CF_(4).As for the end treatment of CF_(4),seven pipe-end treatment technologies,including deep-cooling separation,adsorption,membrane separation,thermal combustion,thermal catalytic decomposition,plasma high-energy decomposition and electrocatalytic decomposition,are summarized from the perspective of physical and chemical treatment.Meanwhile,the basic principles,application cases and development status of relevant methods are described.Some parameters such as temperature,decomposition product,energy consumption,as well as the advantages and disadvantages of each technology are compared and analyzed.In the final,the future challenges of CF_(4)pipe-end treatment technology are predicted and evaluated based on the industry requirements and application scenarios.
作者
朱烨林
郑谐
陈世杰
刘菀凝
艾曼
沈锋华
向开松
刘恢
ZHU Yelin;ZHENG Xie;CHEN Shijie;LIU Wanning;Ayman Abdallah Ahmed Ismail;SHEN Fenghua;XIANG Kaisong;LIU Hui(School of Metallurgy and Environment,Central South University,Changsha 410083,China;Chinese National Engineering Research Center for Control&Treatment of Heavy Metal Pollution,Changsha 410083,China)
出处
《能源环境保护》
2023年第2期73-84,共12页
Energy Environmental Protection
基金
国家自然科学基金重点项目(52234011)
国家重点研发项目(2022YFC3901100)
国家自然科学基金创新研究群体项目(52121004)。
关键词
四氟化碳
源头减排
末端治理
物理回收
高效分解
Tetrafluoromethane
Source control
Pipe-end treatment
Physical recovery
High efficiency decomposition
