煤电生产系统的能值分析及新指标体系的构建  

Emergy analysis of coal-fired power generation system and construction of new emergy indices

作　　者：楼波[1] 徐毅[1] 林振冠[1] 

机构地区：[1]华南理工大学电力学院,广州510640

出　　处：《生态学报》2011年第24期7591-7600,共10页Acta Ecologica Sinica

基　　金：广州市应用基础研究专项(7421154389972)

摘　　要：煤电生产是我国废弃物粉尘和酸性气体的排放最主要来源。以某2×600MW超临界燃煤发电机组为案例,按传统能值指标体系分别对简单发电系统、发电加除尘系统和发电加除尘脱硫系统进行能值分析。结果表明,投入废物循环利用系统后可持续性指标反而下降。因此,传统的能值指标已不适合废弃物产生较大的煤电生产系统的可持续性评价。针对这一特点,提出了能反映煤电生产系统的相应指标体系,即有效能值产出率(EEYR)、能值环境影响率(EEIR)、有效能值可持续指数(EESI),计算得出简单发电系统、发电加除尘系统和发电加除尘脱硫系统的EESI分别为2.249、2.628、2.642。随着废物处理程度的提高,系统的可持续性更好,显示出环保系统投入的积极意义。Coal-fired power generation is the main source of waste dust and acid gas emissions.As a case of a certain 2×600MW supercritical power generation units,according to traditional emergy indices system,simply power generation system,power generation system with dedusting system and power generation system with dedusting and desulfurization system were analyzed.The results have showed that although waste recycling systems were installed in coal-fired power generation system,Emergy Sustainability Index（ESI） decreased.Therefore,traditional emergy indices system has not been suitable for sustainable evaluation of the coal-fired electrical power generation system,which produces so much waste.On the basis of this character,the corresponding indices were put forward for reflecting coal-fired electrical power generation system,including Effective Emergy Yield Ratio（EEYR）,Emergy Environment Influencing Ratio（EEIR） and Effective Emergy Sustainability Index（EESI）.The EEIR of the three power generation system were 2.249、2.628、2.642,respectively.With the increase of waste treatment level,the sustainability of system was better that showed the positive significance of the investment in environmental protection systems.

关 键 词：煤电生产系统 能值分析 废弃物 能值指标 可持续性 

分 类 号：TM621[电气工程—电力系统及自动化] X773[环境科学与工程—环境工程]