某燃煤电厂烟气超低排放改造工程案例

A Case Study of Flue Gas Ultra-Low Emission Transformation Project of a Coal-Fired Power Plant

随着国内环保要求的不断提高,某燃煤电厂锅炉污染物排放标准已不符合《全面实施燃煤电厂超低排放和节能改造工作方案》的新要求,因而对其烟气脱硝、脱硫、除尘单元实施超低排放改造。介绍了燃煤锅炉基本运行现状和存在的问题,研究分析了工程方案的改造原则、技术路线选择和实施效果。实施改造后,烟气净化单元脱硫、脱硝、除尘效率高,NOx、SO2、烟尘污染物排放浓度达到并优于超低排放限值要求,环保效益显著。

As the improvement of domestic environmental protection requirements,the pollutants emission standard in a coal-fired power plant has not met the new requirements of"The work programme for comprehensive implementation of ultra-low emission and energy saving transformation in coal-fired power plants".The transformations of desulfurization,denitrification and dedusting devices have been implemented for ultra-low pollutants emission of flue gas.This paper introduces the basic operation status and existing problems of the coal-fired boilers.The transformation principle,technical route selection and implementation effect of the project proposal have also been studied and analyzed.The removal efficiencies of desulfurization,denitrification and dedusting devices have been improved obviously,and the emission concentrations of NOx,SO2 and dust have reached and b exceeded the ultra-low emission limit requirements.The environmental protection benefits are significant.