基于层次分析法和模糊综合评价的沼气工程技术筛选  

Biogas engineering technology screening based on analytic hierarchy process and fuzzy comprehensive evaluation

作　　者：向欣[1] 罗煜[1] 程红胜[1] 沈玉君[1] 王延昌[1] 张玉华[1] 

机构地区：[1]农业部规划设计研究院、农业部农业废弃物能源化利用重点实验室,北京100125

出　　处：《农业工程学报》2014年第18期205-212,共8页Transactions of the Chinese Society of Agricultural Engineering

基　　金：公益性行业(农业)科研专项--现代农业产业工程集成技术与模式研究(200903009)

摘　　要：不同沼气工程技术对地域自然条件、环境制约条件、原料种类等因素的适应性有较大差异,科学客观的沼气工程技术筛选方法,是保证沼气工程长期稳定发挥其最大能效的重要基础。该文提出了基于层次分析法(analytic hierarchy process,AHP)和模糊综合评价的沼气工程技术筛选方法和决策流程,构建了沼气工程技术筛选的指标体系;以领域专家实地调查结果为基础,通过AHP法获得沼气工程技术筛选不同指标的权重,然后采用模糊综合评价方法对沼气工程技术进行排序。利用该方法筛选的结果与武汉地区的实际运行效果一致。采用AHP和模糊综合评价方法相结合解决复杂的多因素决策问题,既能克服AHP指标不易量化的主观性,又能避免模糊综合评价方法对指标权重的忽视,可为沼气工程技术筛选提供科学方法。Biogas typically refers to a gas produced by the breakdown of organic matter in the absence of oxygen. Biogas, like solar and wind energy, is a renewable energy source. Biogas is produced through anaerobic digestion with anaerobic bacteria or fermentation of biodegradable materials, usually from regionally available raw materials such as recycled waste like manure, sewage, municipal waste, green waste, plant material, and crops. Biogas is comprised primarily of methane （CH4） and carbon dioxide （CO2） and may have small amounts of hydrogen sulphide （H2S）, moisture, and siloxanes. This energy release allows biogas to be used as a fuel. Biogas can be used as a fuel in any country for any heating purposes, such as cooking. It can also be used in a gas engine to convert the energy in the gas into electricity and heat. In China during the last year, this biogas technology has met with high growth rates, and it has become the main way to use the waste of livestock manure. Currently, a vast variety of biogas technologies and techniques are available at home and abroad. The effects of biogas technologies differ in different regions. Using scientific methods to screen out the right biogas technology for certain areas is applicable, economically viable, and environmentally friendly. Comprehensive evaluation on one certain technology in a specific area is the key issue to select and integrate the modern technology. In order to construct the comprehensive evaluation index system and method for one certain technology in China, construction on the system and method is put forward, and the comprehensive evaluation index system is established with a research method of literature analysis based on a social economic-natural compound ecosystem. In this study, based on the analysis of currently available approaches to screening technologies for biogas and methods to solve the multi-parameter problem in decision making,an AHP and fuzzy comprehensive evaluation based decision making process were applied to establish an index

关 键 词：沼气 工程技术 层次分析法 技术筛选 模糊综合评价 

分 类 号：TK6[动力工程及工程热物理—生物能]