Fuzzy comprehensive evaluation on typical environmental protection engineering project of coal-fired power plant
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摘要: 能源结构决定我国电力供应将长期依赖燃煤火力发电,因此,燃煤电厂各类污染物的控制是亟待解决的问题。在满足我国火电厂污染物排放标准的前提下,尽量提高电厂的经济效益成为关注的焦点。为综合评价火电厂典型环保工程的环境与经济性能,建立其评价指标体系,并根据实际运行参数和技术要求建立各指标权重矩阵,利用模糊数学综合评价方法,构建出火电厂典型污染物控制单元(FGD脱硫、SCR脱硝、静电除尘)的环境与经济效益综合评价模型。其评价结果能够体现测评电厂现有污染物控制单元的环境性能与经济性能的优劣,并且能够指出各污染物控制单元所存在的具体问题及导致这些问题的原因,对测评电厂节能减排发展方向具有重要的指导作用。Abstract: China energy structure decides that the power supply in China will depend on coal-fired power plants in long-term,therefore,pollutants control is the problem to be solved urgently in the coal-fired power plants. Under the premise of pollutant emission standards,improving the economic benefits of power plant is being focused on. For a comprehensive evaluation on the environmental and economic performance of a typical environmental protection engineering project in power plants,the evaluation index system was built,the index weight matrix according to the actual operation parameters and technical requirements was established,and the power plants typical pollutants control unit (FGD desulfurization,SCR denitrification,and electrostatic dust removal) of the comprehensive evaluation model of environmental and economic benefits were set up by using a fuzzy mathematics comprehensive evaluation method. Its evaluation results can reflect the pros and cons of environmental and economic performances of existing pollution control units,thus,the specific problems and its causes of the existing pollution control units are revealed,which is useful for the development direction of energy conservation and emissions reduction.
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