Mercury Emissions Control from Existing Utility and Industrial Boilers

Mercury Emissions Control from Existing Utility and Industrial Boilers

Industrial, commercial, and institutional (ICI) boilers are one of the major sources of hazardous air pollutants (HAP), including mercury (Hg). Coal-fired electric power plants constitute the largest point source of anthropogenic Hg in the United States. The primary objective of this paper was to address the mercury side of the boiler maximum achievable control technology (MACT) of the national...

Control of mercury emissions from coal-fired electric utility boilers.

Introduction During combustion, the mercury (Hg) in coal is volatilized and converted to elemental mercury (Hg) vapor in the high temperature regions of coal-fired boilers. As the flue gas is cooled, a series of complex reactions begin to convert Hg to ionic mercury (Hg) compounds and/or Hg compounds (Hgp) that are in a solid-phase at flue gas cleaning temperatures or Hg that is adsorbed onto t...

Control of Mercury Emissions from Coal Fired Electric Utility Boilers: An Update

Control of Mercury Emissions from Coal Fired Electric Utility Boilers: An Update

1. Controlling Emissions from Wood Boilers

Currently, the use of emission controls on wood boilers is limited and has seen incremental forward movement, as compared with the advances used in Europe. The use of advanced boiler designs, as well as, the use of emission control devices such as ESPs and baghouses are commonly deployed in Europe on small wood boilers (units 1 million Btus and larger). However, in the United States the use of ...