Enhanced Capture of Mercury Using Unique Baghouse Filter Media
Several states have already instituted mercury emission limits in expectation of tightening mercury emission rules that will require reductions of up to 91%. Coal-fired plants searching for an economical way to meet the new limits may need to look no further than replacing their baghouse filter elements.
EPA Indefinitely Delays Power Plant Greenhouse Gas Rules
Just two weeks after the Environmental Protection Agency (EPA) withdrew its smog rule, the agency confirmed it would not meet a Sept. 30, 2011, deadline for issuing proposed New Source Performance Standards (NSPS) to limit greenhouse gas emissions from new, modified, and existing power plants. The agency did not specify a new deadline for proposing the rule.
Improved Coal Fineness Improves Performance, Reduces Emissions
Utilizing engineering ingenuity and today’s developing computational fluid dynamics tools, a new classifier design is now available that significantly improves fineness from pulverizers without the heavy costs associated with dynamic classification or any downsides on pulverizer capacities, maintenance, and parasitic power. Instead, operational flexibility and improved emission control options are enhanced.
Is Coal a Fuel of the Future?
Few reasonable people can dispute that the U.S. Environmental Protection Agency (EPA) is conducting a war against coal. If you doubt that conclusion, just look at the large number of new regulations affecting coal-fired power plants that have been proposed in rapid-fire succession by the EPA.
Luminant, AEP to Mothball Coal Units, Implement Derates on CSAPR Compliance Concerns
Dallas-based Luminant, Texas’ largest power generator, on September 9 filed a legal challenge against the Environmental Protection Agency’s (EPA’s) Cross State Air Pollution Rule (CSAPR) but said the newly finalized rule that will require generators to dramatically reduce sulfur dioxide and nitrogen oxide emissions from power plants had forced it to idle two coal-fired units and reduce capacity at three other units. This decision follows a similar decision made by American Electric Power to shutter 6GW of coal-fired plants in June.
Not a Clue
U.S. Environmental Protection Agency (EPA) rules are being processed at a furious pace in 2011. Unexpectedly, the new greenhouse gas and ozone rules were stayed by President Obama. However, it’s the Utility MACT Rule and the Cross-State Air Pollution Rule that leave utilities on unsteady ground. The result has been a number of plant closure announcements that far exceed the magnitude of the coal-fired generation losses predicted by the EPA. The predicted losses vary greatly.
Obama Shelves Smog Rule on Concerns About Regulatory Burdens, Uncertainty
President Obama has scuttled the Environmental Protection Agency's (EPA's) smog rule, saying that he had underscored the importance of reducing regulatory burdens and uncertainty. The decision has dealt a blow to environmental groupsâ€”which are contemplating legal actionâ€”and won the Democratic president praise from Republicans and industry groups.
Pulverizers 101: Part II
Pulverizers prepare the raw fuel by grinding it to a desired fineness and mixing it with the just the right amount of air before sending the mixture to boiler burners for combustion. In Part I of this three-part report, we examined the essentials of pulverizer design and performance. In the second part, we discuss the importance of fuel fineness. In the final article, we will discuss the importance of air and fuel measurement.