Boiler modifications cut mercury emissions

Oct 04, 2005

Lehigh University researchers in Bethlehem, Pa., have developed a cost-effective technique for reducing mercury emissions from coal-fired power plants.

Lead investigator Carlos Romero said the Lehigh system in full-scale tests at three power plants reduced flue-gas emissions of mercury by as much as 70 percent or more, with modest impact on plant performance and fuel cost.

The reductions were reportedly achieved by modifying the physical conditions of power-plant boilers, including flue gas temperature, the size of the coal particles that are burned, the size and unburned carbon level of the fly ash, and the fly ash residence time. The modifications promote the in-flight capture of mercury, Romero said.

The researchers report their findings in an article titled "Modification of boiler operating conditions for mercury emissions reductions in coal-fired utility boilers," which will be published in a forthcoming issue of the journal Fuel.

Copyright 2005 by United Press International

Explore further: Apple's fiscal 3Q earnings top analyst forecasts

add to favorites email to friend print save as pdf

Related Stories

EPA sets pollution controls for boilers, incinerators

Feb 25, 2011

The Environmental Protection Agency on Wednesday said new pollution controls for boilers and incinerators will save thousands of lives every year but at half the cost of an earlier proposal that industry and lawmakers had ...

US issues cheaper boiler rules

Feb 23, 2011

The US administration overhauled rules Wednesday to cut air pollution from industrial boilers and incinerators but at almost half the price of initial plans criticized by industrial groups.

EPA requires cleanup of mercury from cement plants

Aug 10, 2010

The Environmental Protection Agency on Monday announced the nation's first limits on mercury emissions from cement plants. The decision also will require reductions of other harmful pollutants from cement plants, including ...

Recommended for you

Designing exascale computers

15 minutes ago

"Imagine a heart surgeon operating to repair a blocked coronary artery. Someday soon, the surgeon might run a detailed computer simulation of blood flowing through the patient's arteries, showing how millions ...

Telerobotics puts robot power at your fingertips

55 minutes ago

At the Smart America Expo in Washington, D.C., in June, scientists showed off cyber-dogs and disaster drones, smart grids and smart healthcare systems, all intended to address some of the most pressing challenges ...

User comments : 0