COAL POWER Direct [January 1, 2007]

Coal Plant O&M: Coal Drying Reduces Pulverizer Start-up Costs

If coal leaving a pulverizer isn’t dry, it may plug up the coal pipes leading to the boiler. The coal-drying process in a pulverizer is similar to that used by…

Coal Plant O&M: Elemental Analyzer Checks Quality of Delivered Coal in Real Time

When you receive a shipment, you don’t wait weeks to see whether you got what you paid for — do you? J.M. Stuart Generating Station doesn’t, but it used to.…

Emissions Control: Cost-Effective Layered Technology for Ultra-Low NOx Control

Layering NOx control technologies can reduce a coal-fired unit’s NOx emissions to levels achievable by selective catalytic reduction alone. Advanced Combustion Technology Inc. (ACT) (www.advancedcombustion.net) has demonstrated that using several…

Emissions Control: Layered NOx Reduction on a 500-MW Cyclone-Fired Boiler

Historically, cyclone-fired boilers have been characterized as big emitters of NOx due to the very high temperatures in their primary combustion zone. Uncontrolled levels from 0.8 to 1.9 lb/mmBtu have…

Emissions Control: User-Designed Large-Particle Ash Screens Minimize SCR Fouling

Large-particle ash (LPA), also called popcorn ash (Figure 1), is a serious concern for many coal-fired utility boiler operators who have retrofitted their unit(s) with a high-dust selective catalytic reduction…

PRB Tech Notes: Give Coal Handling the Priority It Deserves

Over the past 17 years — dating back to the 1990 Clean Air Act Amendments and including the introduction of retail competition — coal-fired power plants have become much cleaner…

Speaking of Coal Power: Shedding More Heat Than Light

When Charles Dickens began A Tale of Two Cities with, "It was the best of times, it was the worst of times," he was referring to the French Revolution of…

The Coal Patrol: Looking Back at 2006

To borrow shamelessly from Charles Dickens, one of my favorite authors, for coal in 2006, "It was the best of times, it was the worst of times." No Escape The…

The Coal Pile

The February 1907 issue of POWER magazine reported on the construction of a new coal-fired steam engine plant on the Merrimac River outside of Lawrence, Mass. According to the plant’s…