摘要
随着气候变化越来越成为国际国内各界关注的焦点,一个新的概念——"碳足迹"应运而生。碳足迹是从消费端出发的CO_2排放量,用来衡量人类生产生活中的能源活动排碳对气候变化的影响,比传统意义上的碳排量更加形象而科学。在我国,电力行业作为CO_2减排的主力军,减排任务十分艰巨。因此,了解电力企业的碳足迹情况对于电力企业的节能减排有着指导性的意义。文章基于碳足迹评估核算的理论,采用全生命周期法,自下而上,以山西省吕梁市某燃煤电厂为案例,对其碳足迹进行分析评估,得到企业全生命周期中的碳足迹分布,发现电力企业的碳减排潜力主要在于锅炉燃煤和煤炭开采,但在运输、尾气脱硫等部分的碳排放绝对量也是不可忽视的,电力企业在节能减排时应全面统筹,有的放矢。
Climate Change has prompted people to rethink development modes and take a low-carbon development mode. As climate change are receiving increasing attention worldwide, a new concept, carbon footprint, has emerged. Carbon footprint, based on CO2 emissions from the consumer, is a measure of assessing the effect of production and human activities on climate change by consuming energy and emitting CO2. It seems to be more robust than carbon emissions traditionally used. In China, electric power companies play an important role in emissions reduction and low-carbon economy activities; they are the major drivers of CO2 emissions reduction. Rethinking their strategic positions and development modes necessitates clear planning and research on accounting and managing enterprises’ carbon footprint. In the present work, we analyzed and evaluated the carbon footprint of the coal-fired power company in Luliang City of Shanxi Province based on the theory of carbon footprint assessment, the full life cycle method, and the bottom-up method. The evaluation encompasses direct CO2 emissions and indirect emissions. The direct emissions involve emissions from coal firing and desulfurization replacement. The indirect emissions comprise emissions from coal mining and processing and the transportation for coal and waste. The evaluation requires the calculation of emission coefficients and mass conservation. Data are primarily from the Luliang coal-fired power company, Statistical Yearbook, and some published studies. Results show that the coal firing accounted for 96.2% of the whole carbon footprint, which resulted from the power company’s whole life cycle. Coal mining and processing accounted for 3%, desulfurization replacement accounted for 0.68%, and the transportation accounted for 0.12%. Based on the distribution of the whole life cycle carbon footprint of the power enterprise, it can be found that the primary potential of carbon emissions reduction lies in the coal-fired process in boilers and the coal mining process. Carbon emissions from transportation and the gas desulfurization part appear to be negligible. It is suggested that the power companies work on carbon emissions reduction and energy conservation in a coordinated way.
出处
《资源科学》
CSSCI
CSCD
北大核心
2011年第4期653-658,共6页
Resources Science
基金
环境保护部财政专项:"温室气体排放统计核算与环境监管能力建设"
国家环保部环保公益性行业科研专项(编号:200809151
200809150)
作者简介
刘韵，女，湖南张家界人，硕士生，从事环境经济、气候变化研究领域。E-mail：liuyun7276@163.com
通讯作者：师华定，E-mail：shihd@craes．org．cn
