摘要
采用Eco-Indicator 99方法作为环境指标评价方法,对传统燃煤机组(方案一)、燃煤碳捕集发电系统(方案二)及太阳能辅助燃煤碳捕集发电系统(方案三)进行了㶲环境分析及全生命周期评估,并对比了3种方案的㶲环境指标。结果表明:3种方案中系统㶲效率大小为方案三>方案一>方案二;因碳捕集与封存(CCS)系统对功率产生了惩罚,而太阳能对机组功率有所补偿,使得电力比环境影响排序为方案二>方案一>方案三;CCS系统的电耗导致系统净功率有所下降,因此3种方案生产1 kW·h电力产生的环境影响为方案二>方案三>方案一;㶲环境指标分析中,只有锅炉产生污染物且在环境影响中占主导地位,可通过降低污染物产生来减少环境影响,而对于锅炉、小汽轮机等设备,还可通过提高㶲效率来降低环境影响。
The Eco-Indicator 99 method was used as an exergoenvironmental index evaluation method to conduct the environmental analysis of the conventional coal-fired unit(scheme 1),coal-fired carbon capture power system(scheme 2)and solar-assisted coal-fired carbon capture power system(scheme 3).The life cycle assessment of coal and each equipment was conducted,and the exergoenvironmental indices of the three schemes were compared.Results show that system exergy efficiency is characterized by scheme 3>scheme 1>scheme 2.Considering the power penalty induced by carbon capture and storage(CCS)and the solar power compensation to the unit power,the specific environmental impact of electricity is indicated with scheme 2>scheme 1>scheme 3.The power consumption of CCS system results in a decrease in the net power output of the system,the environmental impact of producing 1 kW·h of electricity is reflected with scheme 2>scheme 3>scheme 1.The exergoenvironmental indices show that only the boiler generates pollutants and play a dominant role in the environmental impact.The environmental impact can be reduced by reducing pollutant generation.For boilers,small turbines and other equipment,the environmental impact can also be cut down by improving the exergy efficiency.
作者
宋睿哲
孔梦迪
叶学民
李春曦
SONG Ruizhe;KONG Mengdi;YE Xuemin;LI Chunxi(Hebei Key Laboratory of Low Carbon and High Efficiency Power Generation Technology,North China Electric Power University,Baoding 071003,Hebei Province,China;China Suntien Green Energy Co.,Ltd.,Shijiazhuang 050000,China)
出处
《动力工程学报》
CAS
CSCD
北大核心
2023年第12期1615-1625,共11页
Journal of Chinese Society of Power Engineering
关键词
燃煤电厂
碳捕集与封存系统
㶲环境分析
生命周期评价
再沸器
coal-fired power plant
carbon capture and storage system
exergoenvironmental analysis
life cycle assessment(LCA)
reboilers
