Technology of mercury removal from exhaust from coal fired boilers

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

Mutagenicity in emissions from coal- and oil-fired boilers.

The mutagenicity of emission samples from three oil-fired and four coal-fired boilers have been compared by using the Salmonella/microsome assay. Very little or no mutagenic activity was observed in samples from five of these boilers. The sample from one oil-fired boiler showed mutagenic activity of about 500 revertants/MJ, and the sample from a coal-fired fluidized bed combustor had an activit...

Selective Catalytic Reduction (SCR) Technology for the Control of Nitrogen Oxide Emissions from Coal-Fired Boilers

The Clean Coal Technology Demonstration Program (CCTDP) is a government and industry co-funded effort to demonstrate a new generation of innovative coal utilization processes in a series of facilities built across the country. These projects are carried out on a commercial scale to prove technical feasibility and provide information for future applications. The goal of the CCTDP is to furnish t...