V94.3A型燃气轮机氮氧化物排放规律研究
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摘要
以V94.3A型燃气轮机为对象,结合天然气系统工艺和燃烧室结构,对燃气轮机氮氧化物排放的变化规律进行研究。发现烟气中氮氧化物含量与燃气轮机所处的工况、天然气燃烧模式和与负荷相对应的燃气量有关。在燃气轮机单循环工作区,烟气氮氧化物的排放含量与预混天然气量、值班天然气量及其燃烧的协同作用有关,其中值班天然气流量对氮氧化物生成量影响更显著。在联合循环区,值班天然气量处于低值工作点,在运行过程中基本维持稳定,烟气排放的氮氧化物含量与预混天然气量成正相关。
The thesis will focus on the rule of the nitrogen oxide emissions for V94. 3 A gas turbine in combination with the technological process of the natural gas system and its combustor structure. It is found that the nitrogen oxide content is related to the operational conditions of the gas turbine,the combustion mode and the amount of natural gas corresponding to the load on base of NOx emission data and the operation parameters. On the condition of the single cycle,nitrogen oxide content in the flue gas emissions is related to the flow rate of premixed gas,the rate of duty gas and synergy of their combustion. And the flow rate effect of duty gas on the nitrogen oxide generation is more significant than that of premixed gas. On the condition of the combined circle,the flow rate of the duty gas is in the low-value working point,which is basically stable during operation,and the nitrogen oxide content of flue gas is positively correlated with the amount of premix gas.
The thesis will focus on the rule of the nitrogen oxide emissions for V94. 3 A gas turbine in combination with the technological process of the natural gas system and its combustor structure. It is found that the nitrogen oxide content is related to the operational conditions of the gas turbine,the combustion mode and the amount of natural gas corresponding to the load on base of NOx emission data and the operation parameters. On the condition of the single cycle,nitrogen oxide content in the flue gas emissions is related to the flow rate of premixed gas,the rate of duty gas and synergy of their combustion. And the flow rate effect of duty gas on the nitrogen oxide generation is more significant than that of premixed gas. On the condition of the combined circle,the flow rate of the duty gas is in the low-value working point,which is basically stable during operation,and the nitrogen oxide content of flue gas is positively correlated with the amount of premix gas.
引文
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[3]王卫群,华伟,孙虹.燃气轮机烟囱冒“黄烟”原因分析及解决对策[J].电力科技与环保,2016,32(1):33-35.
[4]环境保护部科技标准司.火电厂大气污染物排放标准:GB13223-2011[S].北京:中国环境科学出版社,2011.
[5]杨飏.氮氧化物减排技术与烟气脱硝工程[M].北京:冶金工业出版社,2007.
[6]邢希东.大容量燃煤锅炉低氮燃烧与脱硝系统优化运行浅析[J].锅炉技术,2015,45(2):60-64.
[7]卢广法.西门子F级燃气-蒸汽联合循环发电机组培训教材[M].杭州:浙江大学出版社,2014.
[8]徐灏,胡达清,周旭健,刘海蛟.燃机氮氧化物排放研究及脱硝技术探讨[J].能源与环境,2017(5):29-31.