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新排放标准GB13223-2011的实施对火电厂污染物排放提出了更严格要求,为了研究大型循环流化床机组烟气污染物的动态变化排放特性,以云南省某300MW循环流化床锅炉为试验对象,通过控制变量法改变石灰石量、床温、氧量等因素,得到锅炉不同工况下SO2、NOx及N2O的排放特性,并从生成机理角度分析了不同参数之间的影响关系,得出了满足国家排放标准要求前提下的最佳的运行工况。试验结果对循环流化床锅炉运行方式的完善和优化,保证系统高效稳定运行,满足国家排放标准要求具有一定的参考价值。
The implementation of new emission standard GB13223-2011 puts forward more stringent requirements on the discharge of pollutants in thermal power plants. In order to study the dynamic change of emission characteristics of flue gas pollutants in large circulating fluidized bed units, a 300MW circulating fluidized bed boiler in Yunnan Province was tested Object, by changing the amount of limestone, bed temperature, oxygen content and other factors by the control variable method, the emission characteristics of SO2, NOx and N2O under different operating conditions are obtained, and the relationship between different parameters is analyzed from the formation mechanism To meet the national emission standards under the premise of the best operating conditions. The result of the test is of consummation and optimization for the operation mode of circulating fluidized bed boiler to ensure the system to run efficiently and stably and meet the requirements of national emission standards.