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发明授权
CN104801180B 一种喷氨量控制方法与系统 有权 转让

一种喷氨量控制方法与系统
摘要：
本发明公开了一种喷氨量控制方法与系统，根据烟囱入口的NOX浓度设定值、烟囱入口的NOX浓度测量值和时钟信号计算烟囱入口NOX在预设时间内的目标均值，利用预设函数对所述目标均值进行修正得到SCR出口NOX浓度设定值的修正值，利用所述修正值修正SCR出口NOX浓度设定值作为主调节器的设定值，利用修正值与当前SCR入口NOX浓度测量值相减的结果与主调节器的输出值通过副调节器得到目标喷氨量，可以根据烟囱入口的NOX值动态修正SCR出口NOX浓度设定值，从而修正氨气需求量，保证电厂的环保性与经济性的共赢。
摘要（英）：

The invention discloses an ammonia spraying amount control method and system. The method comprises the following steps: according to a NOX concentration set value at a chimney inlet, a NOX concentration measured value at the chimney inlet and a clock signal, calculating a target mean of NOX at the chimney inlet within preset time; correcting the target mean by using a preset function so as to obtain a corrected value of the NOX concentration set value at an SCR outlet, correcting a NOX concentration set value at an SCR outlet by using the corrected value and the using the corrected NOX concentration set value as a set value of a main adjuster; obtaining target ammonia spraying amount by using a difference of the corrected value and the current NOX concentration measured value at an SCR inlet and an output value of the main adjuster by the an accessory adjuster; dynamically correcting the NOX concentration set value at the SCR outlet according to the NOX value at the chimney inlet, thereby correcting quantity demand of ammonia and ensuring environment friendliness and economy of a power plant.

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