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    • 3. 发明授权
    • Combined cycle power plant
    • 联合循环发电厂
    • US08726625B2
    • 2014-05-20
    • US13085167
    • 2011-04-12
    • Joel Donnell HoltGordon Raymond Smith
    • Joel Donnell HoltGordon Raymond Smith
    • F02C6/00F02G1/00F02G3/00
    • F01K23/10F01K23/101F22B1/1815F22B35/007Y02E20/16
    • A combined cycle power plant is provided and includes a gas turbine engine to generate power from combustion of a fuel and air mixture, a heat recovery steam generator (HRSG) disposed downstream from the gas turbine engine to receive heat energy from the gas turbine engine from which steam is produced, the HRSG including a superheating element and a drum element, and a steam turbine engine to be receptive of the steam produced in the HRSG and to generate power from the received steam, the HRSG further including a valve operably disposed to isolate the superheating element from the drum element when a risk of condensate formation in the HRSG exists.
    • 提供联合循环发电厂并且包括燃气涡轮发动机以从燃料和空气混合物的燃烧产生动力;热回收蒸汽发生器(HRSG),其设置在燃气涡轮发动机的下游,以从燃气涡轮发动机接收来自燃气涡轮发动机的热能 产生的蒸汽,HRSG包括过热元件和鼓元件,以及蒸汽轮机引擎,其接受HRSG中产生的蒸汽并从接收到的蒸汽产生动力,HRSG还包括可操作地设置以隔离的阀 当HRSG中存在冷凝物形成的风险时,来自鼓元件的过热元件。
    • 5. 发明授权
    • Inter-stage attemperation system and method
    • 阶段调温系统和方法
    • US08904972B2
    • 2014-12-09
    • US12240879
    • 2008-09-29
    • Rajeeva KumarDarrin Glen KirchhofGordon Raymond SmithWilliam George Carberg
    • Rajeeva KumarDarrin Glen KirchhofGordon Raymond SmithWilliam George Carberg
    • F22G5/12F01K7/06
    • F22G5/12F01K7/06
    • Systems and methods for controlling exhaust steam temperatures from a finishing superheater are provided. In certain embodiments, the system includes a controller which includes control logic for predicting an exhaust temperature of steam from the finishing superheater using model-based predictive techniques (e.g., based on empirical data or thermodynamic calculations). Based on the predicted exhaust temperature of steam, the control logic may use feed-forward control techniques to control the operation of an inter-stage attemperation system upstream of the finishing superheater. The control logic may determine if attemperation is required based on whether the predicted exhaust temperature of steam from the finishing superheater exceeds a set point temperature as well as whether the inlet temperature of steam into the finishing superheater drops below a set point temperature of steam. The attemperation system may include a characterizing function to linearize the valve operation controlled by the control logic to inject cooled, high-pressure feedwater into the steam upstream of the finishing superheater, which may, in turn, control the exhaust temperature of steam from the finishing superheater. The disclosed embodiments may also be applied to any systems where an outlet temperature of a fluid from a heat transfer device may be controlled.
    • 提供了从整理过热器控制排气温度的系统和方法。 在某些实施例中,系统包括控制器,该控制器包括用于使用基于模型的预测技术(例如,基于经验数据或热力学计算)预测来自最终过热器的蒸汽排气温度的控制逻辑。 基于预测的蒸汽排气温度,控制逻辑可以使用前馈控制技术来控制整流过热器上游的阶段温度调节系统的运行。 控制逻辑可以基于来自精加工过热器的蒸汽的预测排气温度是否超过设定点温度以及进入精整过热器的蒸汽入口温度是否低于蒸汽的设定点温度来确定是否需要调温。 调温系统可以包括用于使由控制逻辑控制的阀门操作线性化的特征功能,以将冷却的高压给水注入到精加工过热器上游的蒸汽中,这可以进而控制来自精加工的蒸汽的排气温度 过热器 所公开的实施例也可以应用于可以控制来自传热装置的流体的出口温度的任何系统。
    • 7. 发明申请
    • SYSTEM AND METHOD FOR OBTAINING AN OPTIMAL ESTIMATE OF NOx EMISSIONS
    • 用于获得NOx排放的最佳估计的系统和方法
    • US20100251699A1
    • 2010-10-07
    • US12419382
    • 2009-04-07
    • Charudatta Subhash MehendaleGordon Raymond Smith
    • Charudatta Subhash MehendaleGordon Raymond Smith
    • F01N11/00F01N3/10
    • B01D53/8625B01D53/30B01D53/90B01D2251/2062F01N3/208F01N9/005F01N2560/026F01N2900/0411F01N2900/1402F23J15/003G05B13/048G05B17/02Y02T10/24Y02T10/47
    • A control system for providing an optimal estimate of NOx emission in an exhaust during a selective catalytic reduction process is provided. The control system includes a continuous emission monitoring sensor configured to generate a responsive signal representing a first estimate of NOx emission; wherein the responsive signal has a first time lag between a time of measurement of NOx emission and the time when the corresponding responsive signal is made available by the continuous emission monitoring sensor, and the continuous emission monitoring sensor has a first time constant. The control system also includes a virtual sensor configured to generate a relatively faster responsive signal representing a second estimate of NOx emission. The control system further includes a processor that includes a time delay compensation circuit configured to introduce a second time lag in the relatively faster responsive signal, wherein the second time lag matches the first time lag. The processor also includes a low pass filter circuit coupled to the time delay compensating circuit, wherein the low pass filter circuit has a second time constant matching the first time constant to generate a time delayed signal representing a third estimate of NOx emission. The processor is further configured to subtract the time delayed signal from the summation of the responsive signal and the relatively faster responsive signal to generate the optimal estimate of the NOx emission, wherein the optimal estimate is fed as a feedforward signal into an injection system in the selective catalytic reduction process.
    • 提供了一种用于在选择性催化还原过程期间提供排气中的NOx排放的最佳估计的控制系统。 控制系统包括连续排放监测传感器,其被配置为产生表示NOx排放的第一估计的响应信号; 其中所述响应信号在所述NOx排放的测量时间与所述连续发射监测传感器使相应的响应信号可用的时间之间具有第一时滞,并且所述连续发射监测传感器具有第一时间常数。 控制系统还包括被配置为产生代表NOx排放的第二估计的相对较快的响应信号的虚拟传感器。 控制系统还包括处理器,其包括时间延迟补偿电路,该时间延迟补偿电路被配置为在相对较快的响应信号中引入第二时间滞后,其中第二时间滞后与第一时滞相匹配。 所述处理器还包括耦合到所述时间延迟补偿电路的低通滤波器电路,其中所述低通滤波器电路具有与所述第一时间常数匹配的第二时间常数,以产生表示NOx排放的第三估计的时间延迟信号。 处理器还被配置为从响应信号和相对较快的响应信号的求和中减去时间延迟信号,以产生NOx排放的最佳估计,其中将最佳估计作为前馈信号馈送到注入系统中 选择性催化还原过程。
    • 10. 发明申请
    • EMISSIONS PREDICTION SYSTEM FOR POWER GENERATION SYSTEM
    • 发电系统排放预测系统
    • US20130047615A1
    • 2013-02-28
    • US13214915
    • 2011-08-22
    • Gordon Raymond SmithKelvin Rafael Estrada
    • Gordon Raymond SmithKelvin Rafael Estrada
    • F01K13/02
    • F22B1/1815F01K7/00F01K23/101F22B35/007F22B35/18Y02E20/16
    • A system configured to decrease the emissions of a power plant system during transient state operation is disclosed. In one embodiment, a system includes: at least one computing device adapted to adjust a temperature of an operational steam in a power generation system by performing actions comprising: obtaining operational data about components of a steam turbine in the power generation system, the operational data including at least one of: a temperature of the components and a set of current ambient conditions at the power generation system; determining an allowable operational steam temperature range for the steam turbine based upon the operational data; generating emissions predictions for a set of temperatures within the allowable steam temperature range; and adjusting the temperature of the operational steam based upon the emissions predictions.
    • 公开了一种被配置为在过渡状态操作期间减少发电厂系统的排放的系统。 在一个实施例中,系统包括:至少一个计算装置,适于通过执行动作来调节发电系统中的运行蒸汽的温度,所述动作包括:获得关于发电系统中的汽轮机的组件的运行数据,运行数据 包括以下中的至少一个:所述部件的温度和所述发电系统处的一组当前的环境条件; 基于所述操作数据确定所述蒸汽轮机的允许操作蒸汽温度范围; 在允许的蒸汽温度范围内产生一组温度的排放预测; 并根据排放预测调整运行蒸汽的温度。