By-production,emissions and abatement costeclimate benefit of HFC-23 in China's HCFC-22 plants  

作　　者：Xing-Chen ZHAO Xue-Ying XIANG Shu-Cheng WANG Peng-Nan JIANG Ding GAO Li-Ying YI Min-De AN Fu-Li BAI Wei-Guang XU Jian-Jun ZHANG Jian-Xin HU 

机构地区：[1]College of Environmental Sciences and Engineering,Peking University,Beijing 100871,China [2]State Key Laboratory of Fluorinated Greenhouse Gases Replacement and Control Treatment,Zhejiang Research Institute of Chemical Industry Co,Ltd.,Hangzhou 310023,China

出　　处：《Advances in Climate Change Research》2023年第1期136-144,共9页气候变化研究进展（英文版）

基　　金：supported by the National Key Research and Development Program of China(2019YFC0214500);the Energy Foundation Beijing Representative Office in China.

摘　　要：After the Kigali Amendment(KA)came into effect,HCFC-22 plants are obliged to limit HFC-23 emissions.Therefore,the study of costeffective mitigation pathways for HFC-23 is important for the sustainable implementation of KA in China and other HCFC-22 producing countries.This study constructed an inventory of HFC-23 by-production,emissions,and abatement for HCFC-22 plants in China from 2006 to 2020,and predicted the costs and climate benefits of HFC-23 abatement in China's compliance with the KA between 2021 and 2060.Results showed that HFC-23 emissions from HCFC-22 plants in China contributed about 60%of the growth in global atmospheric mole fraction of HFC-23 observed by Advanced Global Atmospheric Gases Experiment(AGAGE)from 2007 to 2020.Furthermore,China's cumulative HFC-23 abatement was about 109 kt(1613 Mt CO_(2)-eq)from 2006 to 2019,accounting for 53%of total by-production,which allowed the global atmospheric mole fraction and radiative forcing of HFC-23 in 2020 to avoid an uplift of 9.2×10^(-9)and i.7 mW m^(-2),respectively,contributing to climate change mitigation.Under the baseline of the Kigali Amendment,less emission(LE),and resource utilization(RU)scenarios,the cumulative HFC-23 abatement from 2021 to 2060 would be 683±29 kt(10,107±431 Mt CO_(2)-eq),694±29 kt(10,277±427 Mt CO_(2)-eq),and 702±29 kt(10,385±426 Mt CO_(2)-eq),respectively.The cumulative net abatement costs for the KA,LE,and RU scenarios would be(5.0±0.2)billion,(2.9±0.2)billion,and(-2.7±0.2)billion CNY(2021 prices),respectively.In the future,applying resource utilization technology to reduce HFC-23 emissions can achieve both climate and economic benefits.

关 键 词：HFC-23 By-production EMISSIONS Kigali Amendment Abatement cost-climate benefit 

分 类 号：X321[环境科学与工程—环境工程]