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Emerson Actuator replacement solves turbine bypass problem
As often as four times a year during winter months, a power plant in Wisconsin would miss a scheduled start of its combined cycle power plant due to malfunctions of the turbine bypass valves. This article describes how the problems were solved by replacing the actuation components on those valves.
Revision Date: 10/17/2019
Tags: 221118 - Other Electric Power , 211111 - Crude Petroleum and Natural Gas Extraction 原油和天然气开采, Emerson Electric, Valve, USA
Improving Plant Efficiency with Pump Performance and Condition Monitoring
Studies show pumps tend to be some of the more maintenance-intensive equipment in a plant, suffering a failure or some level of degraded operation on average every 12 months. Pumps in especially critical situations often have duplex and even triplex installations as backups, ready to switch over at a moment’s notice, such is their importance. Reactive maintenance, where it is necessary to fix something that has failed, costs 50% more than practicing predictive maintenance where problems can be detected and resolved before a failure. Pumps can be equipped with sensors to monitor condition and performance to ensure problems are detected as soon as possible so appropriate action can be taken…………... Over the last few years, the number of devices designed for equipment monitoring capable of operating on wireless networks has grown substantially. Some communicate using a plant’s Wi-Fi network, but a larger group has been designed to communicate via WirelessHART, the same network used by many types of wireless field instruments (Figure 2). The variety of low-power and low-bandwidth devices designed for these networks has grown enormously, and for all practical purposes, every type of monitoring device necessary for a full pump monitoring setup is available for use with WirelessHART networks.…………... Apps make it simple to perform real-time asset monitoring of a pump installation by identifying abnormal situations as they develop. Pre-packaged analytics evaluate health against unit history and industry norms, and the information is displayed via intuitive dashboards. All of this is possible with minimal configuration effort and no additional loading on the existing automation system. If desired, reporting and alarming functions can be added to external systems, but this is entirely optional.…………... New apps are available for health monitoring in conjunction with the wireless instrumentation, independent of the plant’s real-time automation system. These apps are easy to use because each is configured for a specific type of asset. Just as there are apps for pump monitoring, there are corresponding apps for other types of assets such as steam traps, heat exchangers, cooling towers, pressure relief devices, and more. This specialization helps deliver sophisticated analytics without having to create customized programming. The customization is already built into the platform, supporting fast implementation.……………
Revision Date: 11/29/2018
Tags: 221112 - Fossil Fuel 化石燃料, Emerson Automation Solutions, Pump, Wireless Network, Analyzer, Power Magazine
Low NOx Application, Emerson - Jeff Williams Slides - Hot Topic Hour September 8, 2016
Jeff provided two case studies to validate the performance of their optimization of operations with SNCR.
Revision Date: 9/8/2016
Tags: 221112 - Fossil Fuel 化石燃料, Emerson Process Management
Substantial NOx reductions with Ovation combustion optimization at Midwest coal plant
Emerson and a Midwest Power plant benchmarked pre-project NOX, O2, and steam temperature levels and burner tilt performance. Two improvements were identified, the addition of separated OverFire air (SOFA)dampers & tilts and combustion optimization in the plant’s Ovation control system. The OverFire air process redistributes air within the boiler combustion zone and injects additional air above the combustion zone to complete the combustion process. Decreasing the air within the burner zone lowers stoichiometry, which lowers the flame temperature and reduces thermal NOX. This also reduces the tendency of fuel-bound nitrogen to oxidize to nitrous oxides. To compensate for temperature excursions caused by rapid changes in SOFA positions, advanced control strategies were developed. These control strategies were based on an advanced non-linear, fuzzy-neural NARMAX (FNM) algorithm. The team followed a multi-step process, which included a study of the current combustion process, DCS control improvements, parametric testing, model development, open-loop testing, closed-loop testing, and commissioning. For this project’s optimization model NOX and CO were the control variables. Manipulated variables included the OFA and SOFA dampers, SOFA tilts, O2 trim, auxiliary air dampers, window-to-furnace differential pressure, fuel air dampers, and feeders. The disturbance variables included load, ambient temperature, total air flow, and burner tilts demand. Over the multi-year process that included the combustion optimization, followed by the SOFA equipment, followed by the advanced control optimization of the SOFA equipment, the plant reduced annual NOX output from over 1400 tons to under 600 tons.
Revision Date: 8/11/2016
Tags: Emerson Electric, Optimization, NOx Emissions Reduction
Constellation energy reduces Nox at low cost with emerson optimization system
In 2003 Constallation Energy completed a project to optimize the performance of two units at its C.P. Crane station in Baltimore, Maryland utilizing advanced neural network technology. The C. P. Crane site has two (2) units, each with four (4) Babcock &Wilcox (B&W) cyclonic furnace burners in an opposed-wall firing configuration. The NOx optimization portion of the project has provided the utility with significant reduction in the NOx emissions with a relatively small capitol investment that was recovered in the first five months of the project. This has allowed financial gains from several different aspects including the shifting of required NOx credits to other units and lowering the units’ power production costs, which has increased competitiveness in the dispatching system.
Revision Date: 8/9/2016
Tags: Emerson Electric, Optimization, Combustion
Constellation energy optimizes SNCR process with Emerson program
The SNCR optimization project at Wagner Unit #2 was coupled with the new equipment, revised operational goals, and control system revisions required for the SNCR integration and automated operation. The SNCR optimization project at Wagner Unit #2 was found to significantly decrease the NOx removal from the injection of the reagent in the furnace coupled with a new type of adaptive optimization system that significantly reduced the overall NOx emissions. This new technology eliminates manual parametric testing, and this novel feature enables a faster deployment and operational readiness than previous technology like neural network based systems. The combustion optimization system with SNCR system ON was able to reduce the NOx emissions to an average value 0.298 lb/MMBTU compared to 0.332 lb/MMBTU with optimization system off-line.
Revision Date: 8/9/2016
Tags: Emerson Electric, Optimization, Combustion
Tampa Electric installs Emerson Smart Process system to optimize NOx control with new SCR
TEC entered into a contract with Emerson Process Management Power and Water Solutions to provide an Emerson Smart process combustion optimization system on TEC Big Bend Unit #4TEC This optimization system was installed, configured, and tuned in 2007. It is an in-combustion NOx reduction process that reduces the generated NOx emissions and the cost of the SCR operation. The primary goal of this optimization system was to determine the optimal positions for various combustion parameters to achieve multiple emission goals which are defined and can be modified by the end-user. As part of this combustion optimization and SCR projects, a new CO analyzer was purchased and installed on Big Bend 4 by TEC to provide the optimization system with critical on-line feedback for status of the boiler combustion system.
Revision Date: 8/9/2016
Tags: Emerson Electric, Optimization, Combustion
Minnkota optimizes coal fired power plant to balance erratic wind generation
The ability to effectively utilize the maximum amount of the wind farm production, while preventing transmission voltage surges, was a concern for Minnkota Power Cooperative. Conversely, when the wind would slow, the conventional assets are required to respond to prevent voltage sags. Minnkota M.R.Young power station is the primary source of electric generation for more than 110,000 customers. For many years prior to the wind farm additions Young station was base-load operated to meet the generation needs of the area. The main factors requiring a revised operational mode for the plant generation are twofold. The market was being deregulated by the creation of the Midwest Independent System Operator (MISO) of the transmission grid. Also new wind farms were put into operation nearby, causing additional load demand regulation issues and voltage problems with the electrical transmission lines. The Emerson URO project required significant changes to the Young Station operations to allow Minnkota to capture available wind generated electricity by efficiently cycling the Young Station to meet constant changes in the wind generated output. The scope of the URO project was to create new fully coordinated closed loop control strategies via the following method: 1. Capture detailed unit operating data via parametric testing by cycling the units through various power ranges. 2. Using that data to develop dynamic models of the unit‟s operating characteristics at various load ranges. 3. Testing and verifying those models under actual operating conditions. 4. Modification of existing control settings and benchmarking the new strategy vs. the base strategy. The upgraded software has provided many benefits. The unit is now able to hit targeted set points accurately and with minimal megawatt overshoot, thereby contributing to reduced fuel costs. The unit is also able to ramp to the targeted set point much quicker, enabling revenue to be generated more quickly. Because the unit is able to follow load demand it is now possible for MPC to compete in the ancillary power services market. In addition, the use of optimization technology can also translate into less stress on critical equipment, further enhancing unit reliability and availability.
Revision Date: 8/9/2016
Tags: Emerson Electric, Optimization, Combustion
Low NOx Applications by Jeff Williams, Power & Water Solutions, Emerson - Hot Topic Hour
Ways to reduce a $700 Million NOx Control Requirement
Revision Date: 7/26/2016
Tags: Emerson Electric
Combustion Optimization from Emerson
Measurement and control systems in the boiler can reduce Nox to as low as 0.1 lb/ mm btu. This presentation by Jeff Williams was made in the first Pacific Corp webinar. Jeff promised to show specific case histories in the second webinar. Advantages of SILO are 1. Knowledge gathering in on-line and off-line modes 2. Efficient adaptation mechanism inspired by operation of immune system 3. SILO II is able to adapt to different operating points and it is able to follow changes of the process characteristics. Thus the SILO performance is high in wide range of process operating points. 4 Extended run time of SILO system . The customer saves money on re-tuning the optimization software and has more flexibility in plant revisions. 5. No need for model creation process: 6. No identification experiments 7 No inefficient process operation. 8 No need to change the production schedule of the plant Feature : There are no off dispatch times needed for identification experiments.
Revision Date: 7/15/2016
Tags: PacifiCorp, Emerson Network Power, NOx, Optimization
Fisher Offers Full Range of Control Valves for Power Plant Applications
Fisher offers a full range of control valves for conventional, as well as combined cycle, power plants.
Revision Date: 4/22/2015
Tags: 221112 - Fossil Fuel 化石燃料, 221112 - Fossil Fuel 化石燃料, Fisher Company, Emerson Process Management, Valve, Schematic, Flow Control
This case study describes a sky vent solution for a heat recovery steam generator (HRSG) which addresses noise and vibration concerns at a combined cycle power plant in Texas. The solution incorporated a whisper Trim III noise attenuating flow cage along with a downstream diffuser.
Revision Date: 9/8/2014
Tags: 221112 - Fossil Fuel 化石燃料, Emerson Process Management, Sargent & Lundy, Heat Recovery Steam Generator, Control Valve, Valve, Noise, Vibration, USA
Emerson Process Managment Company Profile in the Combined Cycle Journal, October 1, 2013
Backed by five decades of power industry expertise and proven, long-term service and support, only Emerson offers complete control system retrofits on all major gas turbines, steam turbines and generators. Designed specifically for the power industry, our Ovation™ control system offers features that general-purpose control systems simply don’t have including fully coordinated boiler and turbine control, integrated generator exciter control, automated startup and shutdown sequencing, fault tolerance for failsafe operation, extensive cyber security features and embedded advanced control applications that can dramatically improve plant reliability and efficiency.
Revision Date: 10/23/2013
Tags: 221112 - Fossil Fuel 化石燃料, Emerson Process Management, Control System, Distributed Control System, Combined Cycle Journal
Emerson Process Management at Power-Gen 2012
Revision Date: 12/28/2012
Tags: Emerson Process Management, Exhibition, USA
Emerson Process Management at Power-Gen Europe 2012
Revision Date: 7/11/2012
Tags: Emerson Process Management, Exhibition, Germany
This exhibition conference was held December 14 - 16, 2010 in Orlando, FL. McIlvaine has posted over 70 pictures of stands and people.
Revision Date: 12/14/2010
Tags: 221112 - Fossil Fuel 化石燃料, Victaulic, BWE Energy, Peerless Manufacturing, Howden North America, Nalco Mobotec, Pall Life Sciences, FD Services, Bachmann Dampjoint, Dongwoo Optron, Hilliard, Braden Manufacturing, Metso Power, Norit Americas, China Guodian, Effox-Flextor, Energy Products of Idaho, Outokumpu, Valve Manufacturers Association of America, Ceram Environmental, KE Burgmann, Air Liquide, Tsurumi Pump, DSI, ABZ Valve, P.B.V., Colfax, Dustex, Vaas Industries, Stanadyne, Cameron International, Philadelphia Mixing Solutions, Cat Pumps, ECOM America, DFT, McGill AirClean, Corken, Torishima, NWL Transformers, Callidus Technologies, Augusta Fiberglass, ITW Futura Coatings, Babcock & Wilcox Power Generation Group, Hamon Research-Cottrell, Donaldson Filtration Solutions, Synagro Technologies, Sandvik, Paragon Airheater Technologies, Siemens Energy, Aquatech, Hyunwoo Industrial, BTX, HKC, Roberts & Schaefer, Blome International, Nol-Tec Systems, Wahlco, WFI International, Graver Technologies, Calera, BWF America, Swan Analytical Instruments, Teledyne, CoaLogix, Thermo Fisher, Emerson Process Management, WahlcoMetroflex, Weir Power & Industrial, Haldor Topsoe, Exhibition, USA
Emerson Process Management at Power-Gen 2010 stand pictures plus previous years info
Revision Date: 12/14/2010
Tags: 221112 - Fossil Fuel 化石燃料, Emerson Process Management, USA
MPW optimizing CO and NOx with Emerson SmartProcess
MPW entered into a contract with Emerson Process Management Power and Water Solutions to provide an Emerson SmartProcess Combustion Optimization System for Muscatine Units 8 and 9 which would help reduce emissions and find the optimum positions for various parameters in the boiler combustion process Two parameters carried the highest weights in the combustion optimization system with the CO weight being about double the NOx rate which was targeted around 110 ppm with variations dependent on load. During execution of the optimization project and the first few months of operation with the CO analyzer in-service, both MPW and Emerson agreed that the most important parameter in the combustion process was CO and that it should be maintained at or below 50 ppm and if the CO limit got exceeded in the combustion process, more weight would be given to CO sacrificing NOx somewhat. However, this situation never arose during and after the project was completed. It should be noted that other than the combustion optimizer, there are no other systems post-combustion that would reduce CO. Thus, the weighting was setup to have the CO control variable carry the highest weight and NOx, the second highest. The system was satisfactorily put into operation in 2008
Revision Date:
Tags: Emerson Electric, Optimization, Combustion