01.30.2009 | By Ben Bogner
The 200-MW Dallman Unit 4 under construction in Springfield, Ill., is expected to cost approximately 20% less to operate per megawatt-hour than the most efficient of the three existing Dallman units. A composite stack liner is one element enabling that cost savings....
01.30.2009 | By George S. Potter, PE
The flue gas desulfurization process requires the use of aggressive liquids that significantly shorten the life of typical construction materials such as metals and concrete. That makes fiberglass-reinforced plastic (FRP) the material of choice for many components in a typical flue gas desulfurization (FGD) system....
11.07.2008 | Richard E. Conn, John Grusha, and Gary Norman
Replacing existing, older-generation controlled-flow split-flame burners on Unit 1 at the Seminole Generating Station with Foster Wheeler’s new low-NOx burners and overfire air additions reduced NOx emissions. This case study provides all the details and post-installation test results....
06.27.2008 | By Mike O’Neill
Many automation engineers are coming face to face with real fieldbus applications for the first time. Fieldbus (the use of digital communications networks for distributed instrumentation and control) is a wonderful technology with many benefits, but fieldbus installation requires some additional considerations over and above normal 4-20 mA projects. In this article, I present some of those issues and show you how to deal with them....
06.27.2008 | By Christopher Humphrey, PE; Bob Klare; and Rajesh Mendiratta
Reducing NOx, SO2, and other air pollutants continues to be a challenge for the power generation industry. The technologies are well-understood, but the devil is always in the details, especially when a complex treatment system is retrofitted to an existing plant.
The most common method for reducing SO2 from plant emissions is the conventional lime- and limestone-based flue gas desulfurization (FGD) system. Material-handling systems for limestone and gypsum present specific challenges and opportunities that differ from those of coal-handling systems. This article looks at factors to consider before and during the design of a new material-handling system. The choices you make about these many variables will determine the cost and longevity of your system....
06.27.2008 | By Sonal Patel
In early June, New York Gov. David Paterson proclaimed that his state would commit $6 million to buttress a carbon capture and sequestration (CCS) viability study for the development of a new 50-MW clean coal plant in Jamestown, in western New York. The circulating fluidized-bed (CFB) project, which would use pure oxygen to combust coal and subsequently capture and sequester 90% of emitted carbon dioxide (CO2), would be “the first of its kind in the world” and could potentially enable New York firms to launch exports of the technology worldwide, Paterson promised....
03.01.2008 | Douglas J. Smith, IEng, Contributing Editor
In recent years, Sargent & Lundy has evaluated many potential sites for new coal-fueled generation. Some of the sites studied were lands adjacent to existing power plants (brownfield sites); others were undeveloped greenfield sites. The numerous...
01.01.2008 | Dr. Robert Peltier, PE
Production from Wyoming Powder River Basin (PRB) coal mines ended last year with a increase of only about 1.1%, reflecting a record 451.3 million tons, according to the Department of Energy’s Energy Information Administration. Production of PRB coal...
01.01.2008 | Dr. Robert Peltier, PE
The FutureGen Industrial Alliance Inc. selected Mattoon, Ill., as the site of the $1.8 billion FutureGen project just before Christmas, but the plant may never move off the drawing board.. FutureGen, the proposed prototype of a near-zero-emissions coal plant...
01.01.2008 | Emerging Energy Research
Integrated gasification combined-cycle (IGCC) technology, a process of gasifying coal that allows the capture of carbon dioxide emissions, has tremendous potential for meeting future baseload generation demand. Though it is one of the leading alternatives for...
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