Internal Data Search by Event Calendar
RO Pretreatment Optimization Using particle Monitor/Counter Technology Randy Turner, Southern Company This is an experience report illustrating how particle counter and particle monitor technology was successfully applied to improve RO pretreatment thereby reducing RO cleaning frequency.
Revision Date: 4/14/2011
Tags: 221113 - Nuclear Electric Power Generation * , 221112 - Fossil Fuel 化石燃料, Southern Company, Particle Monitor, Steam Cycle, Water Treatment, USA
Applying Proper Cycle Chemistry Programs to a newly constructed Coal Fired Supercritical Unit Rob Grabarczyk, We Energies This paper and discussion chronicles the experience of start up and commissioning a new 600 MW coal fired supercritical boiler. In starting up a new unit, many challenges are encountered that are not typically seen in units with a longer operating history. Insight is provided into the decisions to start the unit using AVT-R and progress to AVT-O and ultimately Oxygenated Treatment.
Revision Date: 4/14/2011
Tags: 221112 - Fossil Fuel 化石燃料, We Energies, Treatment Chemical, Water Treatment, USA
Power Industry Experience Using Micro Media Filtration and Short Bed Ion Exchange Geoff Hong, Eco-Tec Inc. With the demand for higher efficiencies and lower maintenance and operating costs for boilers and turbines, high purity water treatment systems are becoming more crucial to the operation of power plants. Modern power plants, operating at supercritical and ultra supercritical boiler pressures and temperatures, require such high purity water that it is approaching theoretical levels. High efficiency gas-fired combustion turbines, which use high purity water for NOx control and sprint mode, heat recovery steam generators and once through steam generators also require high purity water for the same reasons. Effective pre-treatment for reverse osmosis (RO) and ion exchange (IX) demineralizer systems not only contributes to the production of high purity water, but also helps to reduce the operating and maintenance costs of those systems. The versatility and efficiency of short bed ion exchange systems produce high purity water from feeds of variable characteristics, with lower chemicals consumption and waste volumes. This paper discusses the use of micro media filtration as a pre-treatment for RO or IX systems and the use of short bed IX systems for the production of high purity boiler feed make up water and condensate polishing. The experiences of several installations are outlined for applications in power generation and cogeneration plants.
Revision Date: 4/14/2011
Tags: 221113 - Nuclear Electric Power Generation * , 221112 - Fossil Fuel 化石燃料, Eco-Tec, Ion Exchange, Filter Media, Steam Cycle, Water Treatment, USA
RO Membrane Pretreatment Ken Robinson, Avista Technologies Pretreatment continues to be a subject that turns up on a daily basis when dealing with RO (Reverse Osmosis) process. Even though pretreatment requirements are well established for RO, the power utility market as a whole tends to see more of these issues as compared to other industries. Part of the reason for this trend is that feed water supplies tend to originate from surface sources while other factors tend to be more directed at equipment and design specifications. This presentation will focus on a number of pretreatment strategies that various power utilities have dealt with over the course of the last couple of years. RO system cases involving softening, coagulation, ultrafiltration, and media filtration will be covered along with RO process issues such as scaling, filtration, and biogrowth. In each of these cases, solutions will be presented on how to best mitigate the problems and show how analytical techniques can be used to fine tune and minimize the impact of the problems.
Revision Date: 4/14/2011
Tags: 221113 - Nuclear Electric Power Generation * , 221112 - Fossil Fuel 化石燃料, Avista Technologies, Treatment Chemical, Water Treatment, Steam Cycle, USA
Outsourced Water Treatment Provides Higher Purity for Nuclear Power Plant Michael Reyes, Crown Solutions Crown Solutions Co., LLC, a Veolia Water Solutions & Technologies company was contacted by a Nuclear Power Plant to develop a competitive solution to design, build, install, operate, and maintain a new 400 gallon per minute (GPM) ultra high purity demineralized water plant to replace their internally operated, 20+ year old, demineralized water plant. As part of upgrade and replacement, the client required higher quality demineralized water from their lake water source, specifically parts per trillion (ppt) concentration levels of metals, low total organic carbon, and low dissolved oxygen levels. The client also required specialized contingency for mobile water to backup the redundant installed system. This paper will examine and describe the design selection criteria, startup performance data, and special considerations necessary for the successful implementation of the process.
Revision Date: 4/14/2011
Tags: 221113 - Nuclear Electric Power Generation * , Crown Solutions, Water Treatment, Steam Cycle, USA
A New Approach to On-line Sodium Measurement David Gray, Mettler-Toledo Thornton, Inc. Sodium has been a critical measurement parameter for ensuring water treatment performance and purity for nearly four decades. Monitoring cation exchange performance and the purity of makeup water, steam and condensate has benefitted from measurement of this key parameter. Many refinements have been made to the ion-selective electrode method for on-line sodium measurement for these applications. Described here are yet further improvements to this technology including an unique integrated electrode system that measures both sodium and pH to assure proper reagent delivery. The system design minimizes reagent consumption and reduces maintenance requirements well below current practice. The new sodium system uses a particularly simple automatic calibration method and also provides the ability to measure grab samples easily. Its implementation with an operator interface common to other parameters including conductivity, dissolved oxygen, pH and ORP makes it especially convenient for installation and operator training.
Revision Date: 4/14/2011
Tags: 221113 - Nuclear Electric Power Generation * , 221112 - Fossil Fuel 化石燃料, Mettler-Toledo Thornton, Monitoring, Water Treatment, Steam Cycle, USA
Comparison of Dissolved Oxygen Measurement Technologies Kenneth Kuruc, Hach Company Dissolved oxygen measurement in the steam cycle remains a key parameter for the monitoring and control of corrosion. A variety of methods, including colorimetric and electrochemical (galvanic and polarographic), continue to be employed as either field test, portable or process platforms. However, most methods to this point have required a fair amount of attention and expense in order to maintain proper operation. In this paper we will discuss the traditional methods along with a relatively new technology known as “optical” or “luminescence”. The significance and potential advantages of this new technology for the power industry will then be considered.
Revision Date: 4/14/2011
Tags: 221113 - Nuclear Electric Power Generation * , 221112 - Fossil Fuel 化石燃料, Hach, Optical Dissolved Oxygen Monitor, Steam Cycle, Water Treatment, USA
Using in-situ Feedwater ORP Control to Improve Boiler System Operation Daniel Cicero, Nalco Company This paper discusses the value controlling reductant feed based on in-situ feedwater ORP measurements. Two case studies will be presented: a large, coal-fired unit in the western US that achieved a 75% reduction in start-up time and an intermittently-operating combined-cycle gas turbine plant that reduced corrosion product transfer.
Revision Date: 4/14/2011
Tags: 221113 - Nuclear Electric Power Generation * , 221112 - Fossil Fuel 化石燃料, Nalco, Monitoring, Steam Cycle, Water Treatment, USA
Electric Utility Chemistry Workshop, June 7-9, 2011, Champaign, IL, Exhibitors
Now in its 31st year, this comprehensive program features state-of-the-art information on controlling corrosion, improving operation efficiency, and meeting environmental challenges in fossil- and nuclear-fueled power plants. This year’s program is geared toward improved training and continuing education of personnel responsible for electric utility cycle and environmental chemistry. More than 3,000 chemists, consultants, and power plant administrators have attended the workshop since its inception in 1981. The 2011 program has been developed by a committee of representatives from midwestern electric utilities, the Illinois State Water Survey, the University of Illinois at Urbana-Champaign, and consultants serving the power industry. Some of the most popular features of the workshop are the Utility Experience presentations. Seasoned professionals from utility companies discuss their experiences on a range of topics. The entire workshop has been structured to encourage participation from attendees.
Revision Date: 4/14/2011
Tags: 221113 - Nuclear Electric Power Generation * , 221112 - Fossil Fuel 化石燃料, Mettler-Toledo Thornton, Nalco, Ovivo USA, Aquatech, Sentry Equipment, Fuel Tech, Wolcott Water Systems, Waltron, Evoqua Water Technologies, Swan Analytical Instruments, Thermo Scientific, Turner Designs Hydrocarbon Instruments, Sanosil, Lanxess Sybron Chemicals, Conco Systems, Industrial Analytics, Illinois Water Technologies, GE Water, Eco-Tec, Eka Chemicals, AVANTech, Graver Technologies, H2O Innovations, Baker Hughes, Hach, Buckman, Martek Instruments, Veolia Water, Power Generation, Steam Cycle, Water Treatment, USA
Revision Date: 4/14/2011
Tags: 221111 - Hydroelectric Power Generation 水力发电, Ameren Services, USA
Overview of Microbiological Control & Monitoring In Utility Cooling Systems K. Anthony Selby, Water Technology Consultants, Inc. Cooling water systems in electric utility plants face challenges related to corrosion, mineral scale deposition, microbiological fouling, and suspended solids accumulation. Of these challenges, microbiological control is a primary issue because it can impact the others. In addition to a direct impact on heat transfer, microbiological growth can influence corrosion, trigger mineral scale formation, and accelerate suspended solids accumulation. This overview will discuss the common methods of microbiological control in power plants as well as discussing some emerging technologies. It will also emphasize the importance of monitoring the effectiveness of microbiological control and discuss current monitoring methodology.
Revision Date: 4/14/2011
Tags: 221112 - Fossil Fuel 化石燃料, Water Technology Consultants, Monitoring, Cooling, USA
Development and Application of Phosphorus Free Cooling Water Treatment Technology Raymond M. Post, Helen R. Cerra, and Richard H. Tribble, ChemTreat, Inc. Organic and inorganic phosphates are key components in cooling water treatment technology. According to the USEPA, nutrient pollution from phosphorus (and nitrogen) is one of the top three causes of impairment of US waters. At least 25 states have enacted some numeric criteria for nutrient discharge. This paper briefly discusses the status of emerging phosphorus discharge regulations and reports on the development of completely phosphorus-free cooling water treatment programs.
Revision Date: 4/14/2011
Tags: 221112 - Fossil Fuel 化石燃料, ChemTreat, Treatment Chemical, Cooling, USA
Fundamentals of Cooling Tower Heat Transfer Brad Buecker, Kiewit Power Engineers Many power plants and other industrial facilities utilize open recirculating cooling systems equipped with cooling towers for heat transfer from condensers and auxiliary heat exchangers. Cooling towers commonly sit well away from the main plant, and it is often possible to forget about them until something goes awry. This talk outlines the fundamentals of heat transfer in a cooling tower and important issues for maximizing heat exchange.
Revision Date: 4/14/2011
Tags: 221112 - Fossil Fuel 化石燃料, Kiewit Power Engineers, Cooling Tower, Cooling, USA
Environmental Issues Facing Utilities Today, The Environmental Avalanche Bert Valenkamph, Northern Indiana Public Service Company In my 32 years of environmental and chemical compliance I don't believe there has been this many environmental rules either being developed or taking effect at the same time with this much potential impact. I call it the environmental Avalanche. This paper will examine these rules and proposed regulations and their impact on our operations at Northern Indiana Public Service Company.
Revision Date: 4/14/2011
Tags: 221112 - Fossil Fuel 化石燃料, Northern Indiana Public Service, USA
Corrosion of Alloy 2205 in Wet Flue Gas Desulfurization Systems Rob Grabarczyk, We Energies Significant pitting was discovered in two newly commissioned wet flue gas desulfurization absorber vessels. The vessels are constructed of solid duplex alloy 2205 with both vessels accumulating less than six months of operation when the pitting was discovered. This presentation provides a description of the pitting and We Energies efforts to determine the cause and potential solutions to ensure reliable operation of the system.
Revision Date: 4/14/2011
Tags: 221112 - Fossil Fuel 化石燃料, We Energies, Alloy Steel, Air Quality, USA
Climate Change: What Does the Science Tell Us? Chris Skates, Electric Energy Inc. Global Warming, Climate Change, or Excess Carbon Emissions, any of these three labels describe a subject area very prevalent and very controversial in the year 2011. Despite the controversy, this topic describes the single most critical issue to fossil fueled power generation of our generation. With an issue that is so emotionally charged and political, is it possible to peel away those layers and simply do what Chemists and Engineers do best; evaluate the data.
Revision Date: 4/14/2011
Tags: 221112 - Fossil Fuel 化石燃料, Electric Energy, USA
Emerging Environmental Regulations and Their Impacts on the Electric Utility Industry Steven C. Whitworth, Ameren Services There are numerous environmental regulations in place that impact the electric utility industry. In the last year, the USEPA has announced an almost unprecedented number of new initiatives as well as revisions to existing regulations. This presentation will provide an update on several regulations that will impact the electric utility industry including the Clean Water Act 316(b) provisions for cooling water intake structures, a proposal to revise the steam electric effluent guideline limitations, the proposed coal combustion residual (CCR) rule, the proposed Clean Air Transport rule and Maximum Achievable Control Technology (MACT) standards for hazardous air pollutants for electric generating units and other power plant equipment including industrial boilers and reciprocating internal combustion engines. The presentation will provide information on potential impacts of the regulations on power plants and a discussion of potential compliance options with a focus on a power plant perspective.
Revision Date: 4/14/2011
Tags: 221112 - Fossil Fuel 化石燃料, Ameren Services, USA
On-Line Water Chemistry Measurements for Power Plants Ravi Jethra, Fred Kohlmann, Bhupen Patel, Endress + Hauser Inc. At the center of every efficient power plant, there is a well run water treatment system. Correct water treatment is crucial to provide high purity water to pre heater, boiler, steam and condensate systems, as well as other systems using boiling-water reactors and pressurized water reactors. The quality of makeup and feed-water is required to be monitored continuously to detect chaining water quality parameters (WQP). These changes in WQP usually indicate maintenance, upsets, leaks, and carryover. The long term data review of WQP also helps to study the gradual trends for prevention of corrosion or scaling. In case of inadequate measuring systems, these conditions may result in increased or unscheduled maintenance, higher capital cost, lower efficiency of heat transfer surfaces, and less profits due to down time. As newer and better technologies increase the power plant efficiencies in other area, the allowable limits on water quality become increasing important. Therefore, the requirements of WQP measurements become more important. The paper discusses data from case histories on water quality. In addition, the authors discuss how WQP measurements can be utilized to implement savings in reagents in the treatment process. The information presented in this paper would be helpful to operations managers, maintenance staff, and process owners of water treatments associated with power and steam utilities.
Revision Date: 4/14/2011
Tags: 221113 - Nuclear Electric Power Generation * , 221112 - Fossil Fuel 化石燃料, Endress + Hauser, Monitoring, Steam Cycle, Water Treatment, USA
Do Neutralizing Amines Have a Role in the Treatment of High Purity Boiler Feedwater? James (Jim) Robinson, Luis Carvalho, Robin Kluck, Richard Krichten, GE Power & Water – Water & Process Technologies Neutralizing amines have been widely used to treat high purity boiler feedwater since at least the 1940s. Notable benefits have been derived, however some consider the use of these amines to be risky. In addition the use of organic chemicals for boiler feedwater treatment often causes steam and condensate cation conductivity levels to exceed current power industry and steam turbine vendor guidelines. The benefits that can be derived and questions concerning the use of neutralizing amines are presented to help plant operators assess the potential value of using them in their systems.
Revision Date: 4/14/2011
Tags: 221113 - Nuclear Electric Power Generation * , 221112 - Fossil Fuel 化石燃料, GE Water, Steam Cycle, Water Treatment, USA