07.01.2007 | By Douglas J. Smith, IEng
The 1990 amendments to the Clean Air Act require coal-fired power plants to reduce their emissions of the pollutant SO2. To do so, many have switched to, or are considering switching to, Powder River Basin (PRB) coal. Unfortunately, PRB coal has a tendency to leave excessive and tenacious deposits on boiler heat-exchange surfaces. Complicating the problem, the distribution of the deposits is far from uniform....
05.01.2007 | Kennedy Maize
It’s déjà synfuels all over again. With crude oil prices seemingly interminably pegged at over $60 a barrel, the old, beguiling notion of turning coal into liquid fuel — a task accomplished by the Nazis in the 1940s and the South...
05.01.2007 | Randy Rahm is executive director of the PRB Coal Users’ Group. He can be reached at r.rahm@ethanexenergy.com.
Money is always spent with the best intentions. We look for the best deal, often identifying it by the lowest price. Sometimes, our choice works out and we save money and get a great product. When it doesn’t work out, however, we find ourselves spending...
05.01.2007 | Douglas J. Smith, IEng
During 2005, about 150 million tons of coal were transported to power plants by hopper barges plying U.S. inland waterways. With coal-fired plants expected to continue producing 50% of America’s electricity, coal barge traffic is not likely to fall off...
05.01.2007 | Gerald Pargac is performance manager of LCRA’s Fayette Power Project. He can be reached at gerald.pargac@lcra.org. Doug Hart is manager, firing
The Fayette Power Project (FPP, aka the Sam K. Seymour Power Station) is a three-unit, coal-fired generating plant sited near La Grange, Texas (Figure 1). Units 1 and 2, each with a nominal rating of 600 MW, are co-owned by the Lower Colorado River Authority...
05.01.2007 | C.A. Penterson is manager of fuel equipment design for Riley Power Inc. He can be reached at cpenterson@babcockpower.com. D.E. Dorman and B. Courteman
Reducing NOx emissions from large utility coal-fired boilers has been a primary focus of the U.S. power generation industry since passage of the 1970 Clean Air Act and subsequent legislation. By the early 1990s, nearly all such boilers had installed some form...
03.01.2007 | Dr. Robert Peltier, PE, Editor-in-Chief
Carbon capture and sequestration (CCS) have elbowed their way into the nation’s lexicon with the rise in concern over climate change. But few of the journalists who are hyping global warming have taken the trouble to learn the ins and outs of producing...
03.01.2007 | Kennedy Maize
The big buzz still echoing through world of coal-fired generation is the move by two big-bucks private equity investors to take TXU Corp. off the public market, including scuttling announced plans for eight new pulverized coal – fired plants. That...
03.01.2007 | Randy Rahm is executive director of the PRB Coal Users’ Group. He can be reached at r.rahm@ethanexenergy.com.
In the last issue of COAL POWER, I urged readers to give coal handling the priority it deserves. The coal yard warrants as much attention as boilers and combustion systems, turbine-generators and auxiliaries, and postcombustion emissions control — the...
03.01.2007 | Douglas P. Ritzenthaler is an Engineer I in the Environmental Equipment Performance Group at American Electric Power; he can be reached at dpritzentha
Using a selective catalytic reduction (SCR) system to reduce the emissions of nitrogen oxides (NOx) from a coal-fired power plant is rapidly becoming the norm, rather than the exception. But for many plants, adding an SCR system has unintended consequences...
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