POWER

Catalysts used in selective catalytic reduction (SCR) systems in utility boilers provide high NO_x removal efficiencies that routinely exceed 90%. A major co-benefit of applying SCR to coal-fired power plants is that the SCR catalyst also oxidizes the vapor phase mercury from an elemental form to a soluble ionic form, which can be readily captured in a downstream flue gas desulfurization process. Mitsubishi Heavy Industries and Cormetech have developed an advanced SCR catalyst technology with high mercury oxidation activity capable of achieving 95% oxidized mercury over a wide range of operating conditions.

Nearly a quarter-century after the Chernobyl nuclear power station disaster in Soviet Ukraine, Russia has been making deals with energy-starved nations all over the globe to help them build new nuclear power plants using Russian second-generation reactor technology.

The competitive push for more efficient power generation prompted the management of East Kentucky Power Cooperative’s Spurlock Station to provide training and to implement standardized work processes in order to achieve higher productivity. To that end, Spurlock’s management collaborated with salaried and hourly personnel to design and implement work process optimization. Two years later, their proactive, operations-driven culture is promoting continuous improvement at this facility.

While the U.S. awaits congressional action on a cap-and-trade program that could possibly be limited to just the utility sector, Canada is moving, starting in 2011, to phase out older coal power plants and replace them with natural gas–fired plants. The announcement, made this June by Environment Minister Jim Prentice prior to the G8 and G20 summits, could have serious implications for coal-fired generators in the country.

Steve Elonka began chronicling the exploits of Marmaduke Surfaceblow—a six-foot-four marine engineer with a steel brush mustache and a foghorn voice—in POWER in 1948, when Marmaduke raised the wooden mast of the SS Asia Sun with the help of two cobras and a case of Sandpaper Gin. Marmy’s simple solutions to seemingly intractable plant problems remain timeless. This Classic Marmaduke story, originally published more than 50 years ago, illustrates that although solutions may be easy to identify, the challenge is often in the implementation. Sometimes a little horse sense is all that is necessary.

This June, AREVA installed the reactor pressure vessel (Figure 6)—the core of the unit—at the world’s first EPR project, which is under construction in Finland. Now the company will engage in a flurry of installation activities for heavy nuclear components, including lifting into the reactor the first of the four steam generators. Most of the work is expected to be completed by the end of 2012, with power production beginning in 2013.

Eliminate waste in coal, gas, or nuclear power plant construction through a holistic application of lean principles.

The U.S. Army Corps of Engineers earlier this year awarded its first Section 10 permit ever to a commercial wave-powered demonstration facility planned for installation in the Gulf of Mexico. The novel offshore platform, dubbed the SEADOG, will use a buoy and piston mechanism combined with a water wheel to generate electricity and desalinate water.

ABB’s new 266 series is an optimized pressure transmitter family that combines modern electronic pressure measurement with the company’s unique human machine interface (HMI) in one common product series, providing base accuracy from ±0.025% to ±0.06%. The series offers the industry’s best draft range, ABB claims. For combustion airflows, this means exceptional resolution with tighter […]

Sweden Reverses Ban, Approves Nuclear Reactor Replacements Sweden’s parliament on June 18 reversed an earlier decision and passed the center-right coalition government’s landmark proposal, made last year, that allows for the replacement of the country’s nuclear reactors at the end of their life span. The country had voted in 1980 to phase out its 12 […]

HD Electric Co.’s Phase Rotation Meter (PRM) is used to determine the leading phase of any two phases in a three-phase conductor system. The PRM is a dual-range 0 to 5 kV and 0 to 15 kV device that can be used as high as 45 kV when optional resistor sticks are added. It consists of two […]

The SEL-734P Portable PQ Meter is a new metering solution from Schweitzer Engineering Laboratories (SEL) that addresses the need for complete and portable power quality monitoring. In addition to the meter, the kit includes three-phase voltage and current inputs, voltage leads, and split-core CTs, all secured in a ruggedized case. ACSELerator QuickSet SEL-5030 software, included […]

When heat exchanger tubes—sometimes numbering a thousand or more per unit—begin to crack or wear, the effects can lead to a cascade of subsequent failures in adjacent tubes. If too many tubes are plugged, heat exchanger effectiveness is compromised, and power generation may be curtailed. If conventional mechanical plugs are used, they can break loose, leak, and fail. At that point, the replacement of a very costly heat exchanger is imminent.

A new family of Rotating Line Moles (RLM) from NLB gives users more than 40 choices for cleaning pipes and tubes with high-pressure water. Designed for tubes with diameters from 0.5 inch to 1.5 inches (1.27 cm to 3.81 cm), the family features operating pressures of 10,000 psi or 20,000 psi (700 bar or 1,400 […]

One of the world’s largest geothermal power stations was officially opened this May on New Zealand’s North Island. A joint venture between Mighty River Power and Tauhara North No. 2 Trust, the new 140-MW Nga Awa Purua Geothermal Power Station increases geothermal’s share of power in New Zealand to around 14%—a proportion that has more than doubled since 2005.

Extreme Outback Products introduced the ExtremeAire Triton, which it says could be the world’s first submersible continuous-duty electric compressor. For uses that include air-suspension inflation, powering pneumatic tools, and actuating air lockers and train horns, the fully sealed Triton has a 100% duty cycle. Crucial components include a 1.5-horsepower fan-cooled motor and other parts shared […]

The gas-rich emirate of Qatar, holder the world’s third-largest gas reserves, inaugurated another massive 2,000-MW gas power plant in the industrial city of Mesaieed, south of the capital Doha this May.

Instrumentation specialist Ashtead Technology has launched the Handy Search, a ground-penetrating radar (GPR) that the company says provides a fast, easy way to examine reinforced concrete, bridges, roadways, tunnels, and buildings for inspection. The Handy Search is also useful for maintenance and quality assurance because it allows users to search for steel reinforcement bars, gas […]

Alstom and Schneider Electric Close AREVA T&D Acquisition Deal. Alstom and Schneider Electric on June 7 closed a €2.29 billion (US$2.75 billion) transaction to acquire AREVA’s transmission and distribution arm, AREVA T&D, after obtaining approvals from relevant competition authorities and the French Commission des Participations et des Transferts. A consortium agreement for the joint acquisition […]

A new continuous particulate emissions monitor and baghouse filter leak analyzer incorporates automatic self-checks (zero and span) to ASTM standards to automate compliance with regulatory requirements for periodic instrument validation. The particulate monitor also features system checks to simplify installation and setup and to improve overall performance. Benefits include stack monitoring, detecting filter leaks, eliminating […]

A federal judge recently dismissed a lawsuit in which the plaintiffs alleged that defendants’ production of chemicals and electricity had “added to the ferocity of Hurricane Katrina.” The judge’s reasoning reveals the inherent limitations of courts unilaterally initiating policies to address climate change issues.

Endress+Hauser announced the Deltatop differential pressure (DP) flowmeter for measuring gas, liquid, and steam in ½-inch to 24-inch pipes. The company said that Deltatop is a complete flow monitoring solution, including an averaging pitot tube, and offers customers the most accurate and reliable DP flow technology in the industry. The flowmeter features precision-machined orifice plate […]

It’s no surprise that China leads the world in recent power capacity additions. What may surprise you is the precise mix of options this vast country is relying upon to meet its ever-growing demand for electricity. As a result, this ancient civilization is fast becoming the test bed and factory for the newest generation and transmission technologies.

Degree Controls has introduced AccuSense F333 air velocity sensors, a series of low-cost airflow sensors designed for field systems. The AccuSense F333 provides air velocity measurements within the range of 0.2 m/s to 10 m/s (40–2,000 fpm) while maintaining a ±10% accuracy across a temperature range of 15C to 60C with a 2% or better […]

Regenerative activated coke technology (ReACT) is an integrated multipollutant control approach that removes SO_x, NO_x, and Hg from coal-fired plants by adsorption with activated coke to attain emissions levels found at natural gas–fired plants. One big advantage of this technology is that it uses only a fraction of the water used by conventional wet flue gas desulfurization. A recent license agreement brings this technology to the U.S.

It is clear that energy use will expand in the future as our population and society’s standard of living increase. Meanwhile, the push toward a sustainable lifestyle requires that all resources be utilized efficiently and sparingly. The National Academy of Sciences has identified paradigm shifts from current processes to an ideal vision centered on renewable energy and an atom economy—defined as maximum incorporation of starting materials into final products. These seemingly disparate paths converge if one considers energy production from municipal solid waste (MSW).

Cap-and-trade programs are featured in at least two U.S. legislative proposals to reduce carbon emissions, usually by around 80% by 2050 using a 2005 baseline. The benefits that accrue from the immense investment required to reach these goals are nebulous and don’t occur until decades after the investment. Based on my back-of-the-envelope analysis, the cost-benefit ratio of these proposals does not pass a cursory cost-benefit analysis.

Circulating fluid bed (CFB) dry scrubbing technologies provide distinct advantages over conventional spray dryer absorber scrubbers for removing SO₂ from flue gases. The CFB also competes well against wet limestone flue gas desulfurization processes typically favored for large boilers firing high-sulfur coals. With high SO₂ removal rates in a dry treatment process, the CFB scrubber appears to be the best of both technologies: a water-stingy scrubber with high SO₂ removal rates.

The U.S. Environmental Protection Agency is expected to propose an emissions standard for mercury and other hazardous air pollutants emitted by coal- and oil-fired electric generating units in March of 2011. The anticipated rule would require emission control to meet the various standards using maximum achievable control technology, as determined by the prescriptive requirements of the Clean Air Act. In response to the expected rule-making, utilities will be required to make technology decisions in order to ensure compliance. One cost-effective approach to compliance may be the use of “co-benefits” from air quality control systems (AQCSs) already in service that are designed to remove other pollutants.

American Electric Power’s (AEP’s) Cardinal Power Plant Unit 3 cooling tower in Brilliant, Ohio, was coated and lined in the spring of 2008 by a team of coatings professionals that included the plant’s project and coatings engineering staff, Sherwin-Williams (coatings supplier), Cannon Sline Industrial (contractor), and OTB Technologies (third-party inspector). The team completed the project in just 11 weeks through damp springtime conditions in the Ohio River Valley.