Archive: Coal

Artwork

Cover Story: Coal-fired Electric Power Capacity Continues to Increase

In the U.S. electric power industry, coal is making a comeback as a fuel of choice for new generation projects. During the construction boom that occurred from 1999 to 2003 about 90% of new electric generation utilized natural gas – fired combustion turbines. Unfortunately, over the past few years natural gas supplies have tightened and […]

Artwork

Clean Coal: Clean Coal Technology Is Not an Oxymoron

In the late 1980s, the U.S. Department of Energy (DOE), in conjunction with industry and state agencies, started the Clean Coal Technology (CCT) program. The aim of the CCT program was to develop technologies, increase efficiency, and reduce the environmental effects of burning coal in power plants. Today, pollution controls for new and existing plants […]

520004df4b883-060106_Controls_Fig_1

Controls: Building the Digital Power Plant of the Future

History has shown that the proper deployment of automation on new construction projects can make the difference between a moderate performer and an industry-leading unit, between average financial results and accelerated profitability. Given the magnitude of a new coal-fired plant construction project, automation is often viewed as just one of the many components essential to […]

Coal Users Community: NCTA helping to resolve coal transportation infrastructure problems

The Mission of the National Coal Transportation Association (NCTA) is to provide education and facilitation for the resolution of coal transportation issues in order to serve the needs of the general public, industry, and all modes of transportation. This is accomplished through the sponsoring of educational forums and by providing opportunities for the lawful exchange […]

Projects

Kansas City Power & Light Installing SCR at La Cygne Generating Station Kansas City Power & Light (KCP&L), a subsidiary of Great Plains Energy, has awarded The Babcock & Wilcox Company (B&W) a contract for the installation of new emissions control equipment on Unit 1 at its La Cygne Generating Station. When completed, the selective […]

520004df4bb5a-090106_CaseHistory_Fig_1

Case Histories: Pulverizer Upgrades Are Reducing Fuel Costs

St. Johns River Power Park (SJRPP) is a two-boiler, 2 x 660-MW station jointly owned by JEA (formerly Jacksonville Electric Authority) and Florida Power & Light (FPL). JEA is the plant operator. The Foster Wheeler boilers went into commercial operation in 1987 and 1988. Each boiler has seven OEM vertical spindle pulverizers (mills) and 28 […]

520004dcbbc0f-13-01

Designing and maintaining steam coil air preheaters for reliability and effectiveness

If engineered well and drained properly, a simple finned-tube heat exchanger can help maximize a fossil-fueled power plant’s combustion efficiency, capacity, and air pollution reduction. Use the guidelines in this article either to return a disabled steam coil air preheater to service or to improve the performance of a unit that may have been wasting […]

520004dcbb4c0-11-01

How accurate primary airflow measurements improve plant performance

Primary airflow has a major impact on the efficiency, capacity, and cleanliness of pulverized coal–fired generation. Inaccurate measurements that underestimate primary airflow levels can lead to negative operational outcomes that include increased boiler gas temperatures, flyash loss-on-ignition, excessive NOx emissions, and higher-than-necessary fan power consumption. We remind you how to avoid those headaches.

520004dcbaeac-10-01

Curbing the blue plume: SO3 formation and mitigation

Understanding why stack emissions become opaque leads to better choices of systems for controlling SO3 and other pollutants, based on current and future plant operating configurations.