燃煤电厂脱硝还原剂的模糊综合性评判  

Fuzzy Comprehensive Evaluation for Reducing Agents for Flue Gas Denitration Systems in Coal-Fired Power Plants

作　　者：张翔[1,2] 许红胜[2] 赵龙生[2] 

机构地区：[1]东南大学能源与环境学院,南京市210018 [2]东南大学热电工程设计研究所,南京市210096

出　　处：《电力建设》2014年第1期93-97,共5页Electric Power Construction

摘　　要：目前燃煤电厂烟气脱硝系统采用的还原剂主要是液氨、氨水和尿素,实际工程中还原剂的选取是一个难题。为此,提出了基于模糊数学的综合评判法和隶属度理论,将脱硝还原剂各评判指标作定量分析,根据最大隶属度原则得出评价结果。根据实际情况分析了各因素权重对最终结果所带来的影响,从而得出了液氨为最佳的评判结果。在大机组选择性催化还原法脱硝系统工艺的还原剂选取过程中,若液氨、氨水和尿素都可取,由于液氨经济性突出,技术性能相比稍优,综合来说属于最佳选择。The reducing agents for flue gas denitration systems in coal-fired power plants mainly include liquid ammonia,ammonia water and urea. However,the selection of reducing agents in practical project is always a troublesome question. Based on fuzzy comprehensive evaluation method and membership degree principle,the quantitative analysis of evaluation index were carried out for reducing agent,and the evaluation results were obtained according to the principle of maximum membership degree. Then,this paper analyzed the impact of factor weights on the final results according to the actual situation,and obtained the result that liquid ammonia was best. Liquid ammonia,ammonia water and urea all can be used as reducing agent for the SCR denitration system in large units,but liquid ammonia is the best because of its prominent economy characteristics and slightly better technical performance.

关 键 词：燃煤电厂 烟气脱硝 还原剂 模糊综合评判 

分 类 号：TM621.8[电气工程—电力系统及自动化]