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ULTRA LOW EMISSIONS COMBUSTION CONTROL SYSTEMS INSTALLATION INTO MATURE POWER PLANT GAS TURBINES

机译：超低排放燃烧和控制系统安装到成熟的电厂燃气轮机中

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The search for power plant sustainability options continues as regulating agencies exert more stringent industrial gas turbine emission requirements on operators. Purchasing power for resale, de-comissioning current capabilities altogether and repowering by replacing or converting existing equipment to comply with emissions standards are economic-driven options contemplated by many mature gas turbine operators.One Las Vegas Nevada, USA operator, NV Energy, with four (4) natural gas fired W501B6 Combined Cycle units at their Edward W. Clark Generating Station, was in this situation in 2006. The units, originally configured with diffusion flame combustion systems, were permitted at 103 ppm NOx with regulatory mandates to significantly reduce NOx emissions to below 5ppm by the end of 2009. Studies were conducted by the operator to evaluate the economic viability of using a Selective Catalytic Reduction (SCR) system, which would have forced significant modifications to the exhaust system and heat recovery steam generator (HRSG), or convert the turbines to operate with dry low-emissions combustion systems. Based on life cycle cost and installation complexity, the ultra-low emission combustion system was selected.This technical paper focuses on a short summary of the end user considerations in downselecting options, theultra low emissions technology and key features employed to achieve these low emissions, an overview of the conversion scope and a review and description of the control technology employed. Finally, a technical discussion of the low emissions operational flexibility will be provided including performance results of the converted units.
机译：随着监管机构对运营商施加更严格的工业燃气轮机排放要求，对电厂可持续性选择的搜索仍在继续。购买二手车的动力，完全取消当前的能力以及通过更换或转换现有设备以符合排放标准的方式重新供电，这是许多成熟的燃气轮机运营商所考虑的经济驱动型选择。 美国内华达州拉斯维加斯的一家运营商NV Energy在其Edward W. Clark发电站拥有四（4）台使用天然气燃烧的W501B6联合循环装置，该装置于2006年处于这种情况。这些装置最初配置有扩散火焰燃烧系统，到2009年底，允许以103 ppm的NOx排放，并允许将NOx排放量大幅减少到5ppm以下。运营商进行了研究，以评估使用选择性催化还原（SCR）系统的经济可行性，这将迫使修改排气系统和热回收蒸汽发生器（HRSG），或将涡轮机转换为使用干式低排放燃烧系统运行。根据生命周期成本和安装复杂性，选择了超低排放燃烧系统。 本技术论文着重介绍了最终用户在向下选择选项中的注意事项的简短摘要， 超低排放技术和实现这些低排放所采用的关键功能，转换范围的概述以及所用控制技术的回顾和说明。最后，将提供有关低排放运行灵活性的技术讨论，包括转换后的机组的性能结果。

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