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首页> 外文会议>The proceedings of AD 2005: 50 years of analytical solutions >ON-LINE AMMONIA SLIP PROCESS MONITORING IN POST-COMBUSTION NOX CONTROL EQUIPPED POWER GENERATING STATIONS
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ON-LINE AMMONIA SLIP PROCESS MONITORING IN POST-COMBUSTION NOX CONTROL EQUIPPED POWER GENERATING STATIONS

机译：燃烧后NOx控制装备发电站的在线氨滑过程监测

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Continuous, on-line measurement of ammonia slip across the entire width of the duct hasrnbeen demonstrated in multiple coal fired power generating stations. The measurementsrnwere made using an optical tunable diode laser based instrument (TDL). A single diodernlaser and control electronics, housed in one central unit, were used to drive multiple setsrnof remote optics. The optical paths were completely open, allowing average ammoniarnconcentrations to be measured across the entire width of the ducts up to 6 meters (m)rnThe TDL is a spectroscopic instrument that makes absorption based measurements. Therntechnique and hardware are sufficiently robust to allow accurate measurements to bernmade under a variety of plant working conditions (varying dust levels, processrntemperatures, etc.) while operating continuously over prolonged periods of time.rnLong and short term trends in ammonia slip have been examined and compared withrnother relevant parameters. The availability of continuous, spatially resolved ammonia sliprndata at multiple locations has permitted a detailed analysis and correlation of ammoniarnslip with these parameters. Such data provide important feedback that can be used forrnprocess optimization or diagnosis. The results of a US Department of Energy Clean CoalrnPower Initiative (CPPI) supported study to examine such trends as well as the ability tornuse the measurement for real-time optimization will be discussed.
机译：在多个燃煤发电站中，已经证明了在管道整个宽度上连续不断地在线测量氨泄漏。使用基于光学可调二极管激光器的仪器（TDL）进行测量。装在一个中央单元中的单个二极管激光器和控制电子设备用于驱动多个setrnof远程光学器件。光路完全开放，可以测量高达6米（m）的整个管道宽度的平均氨-TDL是一种基于吸收的光谱仪。技术和硬件具有足够的鲁棒性，可以在各种工厂工作条件（不同的粉尘水平，过程温度等）下进行准确的测量，同时可以长时间连续运行。已经检查了氨泄漏的长期和短期趋势，并且与其他相关参数进行比较。在多个位置可获得连续的，空间上解析的氨漏失数据，可以对氨漏失与这些参数进行详细的分析和关联。这些数据提供了可用于过程优化或诊断的重要反馈。将讨论美国能源部清洁煤动力计划（CPPI）支持的研究结果，以检查这种趋势以及为实时优化而中断测量的能力。

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