POWER

Pulverizers prepare the raw fuel by grinding it to a desired fineness and mixing it with the just the right amount of air before sending the mixture to boiler burners for combustion. In Part I of this three-part report, we examined the essentials of pulverizer design and performance.  In the second part, we discuss the importance of fuel fineness. In the final article, we will discuss the importance of air and fuel measurement.

Quin Shea, vice president, environment for the Edison Electric Institute, comments on the Utility MACT rule that is expected to be finalized in November.

Utilizing engineering ingenuity and today’s developing computational fluid dynamics tools, a new classifier design is now available that significantly improves fineness from pulverizers without the heavy costs associated with dynamic classification or any downsides on pulverizer capacities, maintenance, and parasitic power.  Instead, operational flexibility and improved emission control options are enhanced.

Complying with various state (and expected federal) requirements governing mercury removal from the stack gas of coal-fired power plants has usually been achieved by adding an expensive activated carbon injection system. Now there is another alternative: a catalyst that features higher mercury oxidization activity than conventional catalysts while maintaining the same SO2 to SO3 conversion activity—and all at a lower operating cost. Full-scale installations are under way at several Southern Company plants that burn a variety of coals.

Asset “virtualization” extends and combines the technologies of 3-D visualization and virtual reality to a new, practical level for the life-cycle management of power industry equipment. All pertinent data for a component, subsystem, or plant is associated with, stored, and accessed through as-built 3-D digital models of the actual plant that are constructed using laser scanning techniques.

Constellation Power Source Generation Inc., which owns and operates three coal-fired power plants in Maryland, has contracted with Charah Inc., an ash management company, to build a landfill to strict environmental requirements for the disposal of its plants’ coal combustion by-products that can’t be recycled for other uses.

The EPA began rolling out its long-anticipated power plant regulations this year, causing some utilities to shutter some older coal-fired plants. Other utilities paused, perhaps hoping that a neighbor’s closure decisions would allow continued operation of some of their own older, smaller, less-efficient plants. As the nation sweated through a scorching summer, air conditioners hummed thanks to coal-fired power plants built 50 or more years ago. How many of them will be retired, and over what timeframe?

Over the past 18 months, four solar energy equipment companies have closed their doors. Each one blamed poor market conditions for its economic woes, even though each had fundamental weaknesses that went unaddressed. It now appears that the Department of Energy (DOE) did insufficient due diligence before backstopping one of those four companies, Solyndra, with a $535 million loan guarantee.

As last winter’s abundant snowfall in the Pacific Northwest melted, rivers swelled and hydroelectric operators enjoyed substantial increases in generation. That bountiful clean and cheap power generation was a blessing, but it also triggered a host of legal issues.

Global Training Solutions Inc. released an interactive, self-paced, and fully customizable electronic training program to achieve compliance with the North American Electric Reliability Corp.’s (NERC’s) Critical Infrastructure Protection (CIP) security standards. The company designed its NERC CIP Information Security E-Learning Series on open-web standards, sharable content object reference model (SCORM) compliance, and advanced technical concepts. […]

The German government in July finalized a package of bills that will phase out nuclear’s 23% contribution to the country’s power supply by 2022 and increase renewable generation from the current 17% to 35%. In August, the Federal Network Agency ( Bundesnetzagentur) said it wouldn’t rely on power from seven of the nation’s oldest reactors […]

Situated in predominantly rural central Illinois, the 1,000-MW Coffeen Energy Center has installed a number of controls in recent years and achieved significant environmental performance. For example, in 2010 a new scrubber facility was added that reduces SO₂ from combustion gases coming from the plant’s two coal-fired boilers. The plant personnel’s continuing commitment to protecting the environment helps to promote a strong relationship between the plant and the local community.

The new NLB 605 series of water jet pump units from NLB Corp. gives users a powerful combination of ultra-high pressure and high horsepower in a rugged unit they can convert to a variety of operating pressures. The range of the NLB 605 Series has been expanded to include eight operating pressures from 4,000 psi […]

In China this August, as Ling Ao Unit 4—the second unit of the Ling Ao Phase II nuclear plant—started commercial operation, Westinghouse and its consortium partners marked the milestone of receiving the reactor vessel for the Sanmen nuclear power plant—the world’s first AP1000—in China’s Zhejiang province. The start-up of Ling Ao Unit 4 in Guangdong […]

CPS Energy, the largest municipally owned utility in the U.S. providing both natural gas and electric service, implemented an energy plan in 2003 that required energy conservation measures, use of available renewable energy sources such as wind and solar, and additional coal-fired generation. The $1 billion 750-MW Spruce 2 fits into that plan by being one of the cleanest coal-fired plants in the country.

The BelGAS division of Marsh Bellofram Corp. introduced Type P627, a high-performance, spring-loaded, direct-operating high-flow gas regulator that is designed to control both low- and high-output pressure in oil and gas applications. Designed for maximum durability, Marsh Bellofram BelGAS Type P627 regulators are compact and offered in multi-position body and spring case configurations. Units offer […]

Several states have already instituted mercury emission limits in expectation of tightening mercury emission rules that will require reductions of up to 91%. Coal-fired plants searching for an economical way to meet the new limits may need to look no further than replacing their baghouse filter elements.

As utilities in California are scrambling to meet the state’s 33% renewable mandate by 2020, a 49.6-MW peaking plant in Modesto, Calif., built by Finnish firm Wärtsilä for the Modesto Irrigation District, has been commissioned to provide flexible, fast-start peaking generation to balance the state’s increase in intermittent renewable generation (Figure 4). 4. Flexible peaking. […]

Utilities of Springfield elected to add a 300-MW coal-fired plant to its fleet to meet rising demand for electricity. It was the first coal plant constructed by the utility since 1976. An extremely competitive construction market required the utility to adopt new contracting practices to meet a tight project schedule, an approach that proved very successful. The $555 million plant commissioned in January 2011 is expected to cover system growth at least through 2024.

BeamCap’s signature product, the BeamCap, prevents dust accumulation on I-beams, structural steel members, pipes, cable trays, and other difficult-to-clean areas. BeamCap pieces completely enclose the structures, eliminating horizontal surfaces where dust consistently builds up. This eliminates the need for cleaning in hard-to-reach places and greatly reduces the potential for fires and secondary explosions. The aluminum […]

U.S. Environmental Protection Agency (EPA) rules are being processed at a furious pace in 2011. Unexpectedly, the new greenhouse gas and ozone rules were stayed by President Obama. However, it’s the Utility MACT Rule and the Cross-State Air Pollution Rule that leave utilities on unsteady ground. The result has been a number of plant closure announcements that far exceed the magnitude of the coal-fired generation losses predicted by the EPA. The predicted losses vary greatly.

Kuwait put online the first 1,400 MW of its massive 2,000-MW combined cycle gas turbine Sabiya facility in June to mitigate looming power shortages it faces each summer. The plant—Kuwait’s largest power plant and one of the largest in the Gulf region—is now operating six GE 9FA gas turbines; the remaining 600 MW are expected […]

Aqua-Vu, a provider of portable underwater viewing systems, introduced the Claw 360, a device designed for the detection and removal of objects in an underwater environment. The Claw 360 incorporates a Sharp 520 color camera that can rotate 360 degrees to scan the environment. Lighting is provided by high-intensity LEDs that rotate with the camera. […]

Dallas-based Luminant, Texas’ largest power generator, on September 9 filed a legal challenge against the Environmental Protection Agency’s (EPA’s) Cross State Air Pollution Rule (CSAPR) but said the newly finalized rule that will require generators to dramatically reduce sulfur dioxide and nitrogen oxide emissions from power plants had forced it to idle two coal-fired units and reduce capacity at three other units. This decision follows a similar decision made by American Electric Power to shutter 6GW of coal-fired plants in June.

A new analysis of 85 hydroelectric reservoirs distributed around the world suggests that these systems emit about 48 million metric tons of carbon annually. That figure is much lower than earlier estimates of 64 million metric tons that were based on studies relying on more limited data and which cautioned that reservoirs of all types […]

In April 2008, AES Philippines purchased the Masinloc coal-fired power plant in Zambales Province in the Luzon region. Originally constructed in 1998 as a two-unit, 600-MW plant, the facility uses coal from a variety of sources in the Pacific Rim. After AES finished overhauling much of its equipment, the expanded 660-MW (gross) plant’s availability increased from 48% to 74%, which enabled net electricity production to jump by 129% by 2010.

Advance Products & Systems’ new Kleerband Flange Protectors and Radolid Protection caps protect bolts, nuts, and flange faces on raised-face or full-face flanges in conditions where extreme corrosion occurs, such as at gas plants, pump stations, and above- and below- ground installations. Kleerband is a patented transparent polymer band with grease injection fittings and a […]

Few reasonable people can dispute that the U.S. Environmental Protection Agency (EPA) is conducting a war against coal. If you doubt that conclusion, just look at the large number of new regulations affecting coal-fired power plants that have been proposed in rapid-fire succession by the EPA.

Siemens Gets $1 Billion Order to Build Gas Power Plants in Thailand. Siemens on Aug. 17 said it received two orders worth $1 billion from Thailand for the engineering, procurement, and construction (EPC) of combined cycle power plants. The firm will build Chana Block 2 in the province of Songkhla and Wang Noi Block 4 […]

The new 665-MW Plum Point Energy Station is energizing the Arkansas Delta, an area that is ready to supplement its farming heritage by promoting new jobs that offer residents a higher standard of living. But first, the plant’s construction team had to overcome a number of significant challenges related to building a facility in the New Madrid fault zone.