基于生命周期分析的风机叶片环境影响评价

1.深圳大学滨海城市韧性基础设施教育部重点实验室,深圳大学土木与交通工程学院,广东深圳518060;2.深圳大学未来地下城市研究院,广东深圳518060;3.中国环境科学研究院国家环境保护生态工业重点实验室,北京100012

可再生能源;生命周期评价;风机叶片;生产阶段;碳减排分析;碳-玻纤维复合材料;水泥窑协同处置;减污降碳

Environmental impact assessment of wind turbine blades analysis based on life cycle
CAI Xiaoping1,DUAN Huabo1,2,MA Yi1,LI Qiangfeng1,and XIE Minghui3

1.Key Laboratory of Coastal Urban Resilient Infrastructures, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P. R. China;2.Underground Polis Academy, Shenzhen University, Shenzhen 518060, Guangdong Province, P. R. China;3.Key Laboratory of Eco-Industry of Ministry of Environmental Protection, Chinese Research Academy of Environmental Sciences, Beijing 100012, P. R. China

renewable energy; life cycle assessment (LCA); wind turbine blade; production phase; carbon emission reduction analysis; carbon fiber and glass fiber mixtures; cement kiln co-processing; pollution mitigation and carbon reduction

DOI: 10.3724/SP.J.1249.2023.01040

备注

风能是一种重要的可再生能源,具有天然绿色属性,但风机部件的生产制造和安装使用过程存在一定的生态环境影响.针对9类常用规格的叶片,选取酸化(acidificationpotential,AP)、富营养化(eutrophicationpotential,EP)、温室效应(globalwarmingpotential,GWP)和光化学臭氧合成(photochemicalozonecreationpotential,POCP)4个指标进行生命周期环境影响评价和对比分析.结果表明,单位长度叶片生产使用阶段造成的AP、EP、GWP和POCP环境影响分别约为7.5(以SO2当量计)、0.7(以PO43-当量计)、2.6×103(以CO2当量计)和0.9kg/m(以C2H4当量计).以GWP指标为例,随着风机装机容量持续大幅增长以及风机叶片大量生产使用,预计到2030年和2060年仅风机叶片的碳排放总量(以CO2当量计)累计可达到2.3×107t和2.0×108t.通过使用碳-玻纤维复合材料和回收利用退役风电叶片等措施,可显著降低风机叶片对环境的影响.研究结果可为促进风机叶片产业低碳绿色发展提供依据,并为度量风机及风电场全生命环境影响提供参考.
Wind energy is an important renewable energy source with natural'green'properties. However there may be certain ecological and environmental impacts during the production, manufacturing and installation of wind turbine components. The existing studies mainly focus on the ecological and climatic impacts of wind farms, and lack the environmental impact analysis on production and manufacturing process of wind turbine components, such as blades. Based on the life cycle assessment method, this study examines the environmental impact of 9 different types of major specifications of wind turbine blades, with consideration of acidification potential (AP), eutrophication potential (EP), global warming potential (GWP) and photochemical ozone creation potential (POCP). The results show that the impacts of AP, EP, GWP and POCP per unit length blade are approximately 7. 5 kgSO2 eq/m、 0. 7 kgPO43-eq/m、2. 6 tCO2 eq/m and 0. 9 kgC2H4 eq/m, respectively. Taking GWP impact as an example, it is predicted that the cumulative carbon emissions from wind turbine blades during the whole life cycles will reach 2. 3×107 t and 2. 0×108 t of CO2 eq in 2030 and 2060 at national level, respectively. The combined use of carbon fiber and glass fiber composites and the recycling of decommissioned wind turbine blades can significantly reduce the environmental impact. This study can promote the low-carbon and green development of wind turbine blade industry, and provide reference for measuring the environmental impact of wind turbines and wind farms.
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