POWER

When it is completed, later this summer, the UK’s Drax Power Station biomass facility will become the largest dedicated cofiring project of its kind in the world. As U.S. coal-fired generators come under increasing pressure to cut emissions and take advantage of incentives to promote power generation from renewables, Drax offers an example of what is possible.

In April, Solvay Chemicals Inc. commissioned a new facility that uses an innovative process to recover and transform sodium carbonate waste streams into a market-grade sodium bicarbonate used in air emissions control.

Fogging systems have been successfully used in the material-handling industry for more than 30 years to control explosive dust at transfer points. Today, fogging systems are an EPA Best Demonstrated Technology for subbituminous coal preparation plants.

Safety is the imperative for any construction project, and Duke Energy’s 630-MW Edwardsport integrated gasification combined-cycle station in Knox Country, Ind., is no exception.

Today’s coal-fired power plants face the twin challenges of improving their wet flue gas desulfurization (FGD) systems’ emission control capabilities in order to comply with environmental regulations while at the same time cutting their operational and maintenance costs. Smart strategies for retrofitting existing FGD systems can help plant personnel meet both of these objectives.

Abengoa Solar in early May began commercial operation of Solnova 1, the company’s first 50-MW parabolic trough plant. Covering 980,000 square feet with mirrors requiring an area totaling 280 acres (Figure 2), it is one of five planned concentrating solar power (CSP) plants to be built at the Solúcar Platform in Spain. All will use a technology developed by Abengoa with experience gained from a trough pilot built in 2007. Solnova 1 will also be equipped to burn natural gas if sunlight is weak.

At the opening ELECTRIC POWER 2010 plenary session, both the keynote speaker’s address and discussion among the Power Industry Executive Roundtable participants pointed to the renewed appeal of natural gas and proposed cap-and-trade legislation as being potential game-changers for the U.S. power industry.

An Australian sewage plant this April began using treated wastewater falling down a 60-meter (m) shaft to produce its own power.

There is a certain tentativeness about new nuclear power in the U.S. these days, a low-grade anxiety, as demonstrated by the comments made by electric utility representatives at May’s ELECTRIC POWER Conference in Baltimore.

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.

The 2010 Powder River Basin Users’ Group (PRBCUG) commemorated its 10th anniversary with 354 registered members (210 of whom were from operating companies) for its three-and-a-half-day annual meeting in Baltimore this May. The meeting’s Grand Sponsor was Benetech and its Plant Professionals group.

While Europe’s offshore wind sector has taken off, interest is resurging in marine energy. The UK’s Crown Estate took the major step this March, for example, of awarding leasing rights to 10 wave power projects to develop generation in Scotland’s Pentland Firth and Orkney waters of the North Sea.

As U.S. utilities increase the percentage of renewable energy in their generation portfolio, they must deal with a number of key issues related to selecting specific technologies. Additionally, they must figure out what it will take to make renewables emerge as a mainstream generating option in the future.

Re: “Natural Gas Piping: It’s Time for Better Risk Control,” by John Puskar, PE (May 2010) Mr. Puskar’s recommendations to address the hazards associated with purging and blowing natural gas from large industrial piping systems are a significant contribution to the dialogue that is taking place on this important subject. Mr. Puskar correctly identifies two […]

The sturdy design of CONSPEC Controls’ new Allen Bradley PLC-Equipped Multi-Channel controller makes it ideal for coal-fired power plants needing to detect carbon dioxide and combustible gases through a variety of sensor types. Preprogrammed and calibrated at the CONSPEC factory, the controller is capable of multipoint detection on a single power and communication line. This […]

The FIFA World Cup, the biggest sports event on the planet, is under way in South Africa through July 11. More than 300,000 fans are expected to attend the global soccer tournament, and hundreds of millions more will be watching on television. But a focus will also be on South Africa itself, which 20 years ago ended apartheid and has spent the following decades in a recovery process. And the pressure is on for Eskom, South Africa’s state-owned utility, which generates nearly 95% of the nation’s power (and 45% of Africa’s total).

Cyberex CyberWave from Thomas & Betts Power Solutions incorporates the Cyberex patented digital static transfer switch design, which increases redundancy and reliability. Additional benefits include a full-color VGA touch screen, which allows for easy operation and monitoring with minimal engagement, as well as Modbus communications and advanced battery management capabilities to ensure accurate system analysis. […]

Growing water demand and reduced runoff due to drought has depleted waters feeding many hydroelectric power plants around the world—sometimes causing severe power shortages, such as in Brazil and New Zealand. The 2,080-MW Hoover Dam (Figure 4), a facility that generates power for more than a million people in Arizona, Nevada, and Southern California, is not immune to this phenomenon. According to a recent study by the Scripps Institution of Oceanography, the Colorado River system, which includes Lake Powell and Lake Mead (both manmade reservoirs), is suffering a net deficit of nearly one million acre-feet of water per year.

Types 510 and 511 diaphragm seals are the newest addition to Ashcroft’s line of instrument media isolators. These economical, all-welded seals protect pressure gauges, transmitters, switches, and other instruments against the potentially harmful effects of caustic media. The seals are available for use with ranges from vacuum through 5,000 psi, and they can be threaded […]

Gas hydrate, a potentially immense energy resource, occurs at high saturations within reservoir-quality sands in the Gulf of Mexico, an expedition by the U.S. Department of Energy has discovered.

GD Nash introduced the new 2BE4 series vacuum pumps and compressors, a redesign and upgrade of the existing 2BE3 series. The 2BE4 series includes optimized inlet and discharge porting for enhanced performance, and cylindrical roller bearings for improved load ratings and increased reliability (bearing upgrade is possible in existing 2BE3s). The series also includes optional […]

Soldiers could one day carry 600-W power plants on their backs, or set up arrays of up to 20 kW in streams deeper than 4 feet, if a prototype being developed by California-based Bourne Energy comes to fruition.

Rental Solutions & Services (RSS), a global provider of rental power and cooling, recently launched its latest product offering, temporary desalination, or mobile water. The company, which recently opened a new office in Cyprus to serve the Mediterranean market, says its rental desalination, or mobile water technology has various applications, especially where freshwater is scarce […]

AES Secures PPA with Electricity Vietnam for 1,200-MW Coal Plant. AES Corp. subsidiary AES VCM Mong Duong Power Co. Ltd. in April signed a power purchase agreement (PPA) with state power company Electricity Vietnam (EVN) for Mong Duong II, a proposed 1,200-MW coal-fired power plant. In support of this agreement, AES VCM has also entered […]

Caterpillar introduced the G3512E, an advanced natural gas–fueled generator set that was designed for maximum efficiency in extended-duty distributed generation and combined heat and power (CHP) applications. Driven by a Caterpillar electronically controlled, lean-burn gaseous-fueled reciprocating engine, the G3512E generator set offers high power density and fuel efficiency while maintaining tight NOx control. It provides […]

A recent trend in nuclear power plant upgrades has been the replacement of the motor-generator (MG) sets that drive the reactor circulating pumps with variable-frequency drives (VFD). Siemens’ first application of VFDs in this industry began in 2000 with an installation of six VFDs at the Browns Ferry Nuclear Plant. The use of the VFD continues to expand, and upgrades were recently completed at several U.S. plants, including the Hatch Nuclear Plant in Georgia.

ESAB Cutting Systems launched the Falcon FXA, a small gantry-cutting machine that is designed for improved cutting performance. The machine features heavy-duty gantry, rack-and-pinion drives, digital AC drive amplifiers, and AC brushless motors. It comes with three tools—two oxy-fuel torches and one plasma—and covers a 6-inch by 12-inch working area. These process tools allow the […]

Since the collapse of Enron and the wholesale power markets, the vitality of competition in retail markets for electricity has waned in most regions of the U.S., with the exception of Texas. At KEMA’s 21st annual Executive Forum in late March, 300 attendees converged on Dallas to discuss and debate the dynamics and changes now facing residential and commercial customers in most regions of the U.S. and Canada. Founded in 1927, KEMA is a global provider of business and technical consulting, operational support, measurement and inspection, and testing and certification for the energy and utility industry. A summary of the many presentations follows.

Now that U.S. utilities have taken federal stimulus funds and seamlessly built out two-way advanced metering infrastructure (AMI) connecting utility control centers and end users (ok, not completely, but let’s assume that the “stall-ulus” becomes a true stimulus), the question becomes, what’s next? At the moment, this new “comm layer” or “platform” has utilities planning in two directions: upstream and downstream from the smart meters.

Dresser Waukesha is a familiar name associated with large, gas-fueled stationary engines for power generation and gas compression applications around the world. Each new project location presents a unique set of site variables that must be taken into consideration—such as fuel quality, air/fuel ratio, temperature, humidity, altitude, load, and exhaust after-treatment—when providing the customer a meaningful performance guarantee. To fully characterize every engine option with such a wide range of fuel types and quality and in widely varying environmental conditions across the global is an impossible chore.