13 articles
Acid Rain Program
The Acid Rain Program is an EPA program under the 1990 Clean Air Act Amendments that cut sulfur dioxide and nitrogen oxides from power plants using cap and trade.
Coal blending
Coal blending is the practice of mixing two or more coals so the fuel meets the quality, cost, and emissions needs of a boiler, gasifier, or coke oven.
Cofiring biomass in coal plants
Cofiring biomass in coal plants means burning biomass with coal in existing coal-fired power plants, replacing part of the fossil fuel and reducing net CO2 emissions.
Integrated gasification fuel cell cycle
The integrated gasification fuel cell (IGFC) cycle, formally the Integrated Coal Gasification Fuel Cell Combined Cycle, gasifies coal to drive fuel cell, gas turbine, and steam turbine generation in series.
Low NOx burner
A low NOx burner (LNB) is a combustion burner that reduces nitrogen oxide emissions by staging the mixing of fuel and air within the burner itself.
Mercury and Air Toxics Standards
The Mercury and Air Toxics Standards (MATS) are US EPA emission limits for mercury and other hazardous air pollutants from coal- and oil-fired power plants, effective in 2015.
Overfire air
Overfire air (OFA) is a combustion modification that diverts 5 to 20 percent of a furnace's air to ports above the burners, reducing nitrogen oxide (NOx) formation.
Pressurized fluidized bed combustion
Pressurized fluidized bed combustion (PFBC) is a coal-fired power technology in which coal burns under pressure in a combined steam and gas turbine cycle, commercialized in the 1990s.
Pulverized coal combustion
Pulverized coal combustion (PCC) burns coal ground to a fine powder and blown with air into a furnace, and is the dominant technology for coal-fired power generation worldwide.
Supercritical steam cycle
A supercritical steam cycle is a Rankine power cycle operating above water's critical point of 374 °C and 22.1 MPa, the standard high-efficiency configuration of large coal-fired power plants.
Ultra-supercritical steam cycle
The ultra-supercritical steam cycle is a Rankine power cycle operating above water's critical pressure, around 3,750 psia and above 1,100 °F, the most efficient commercial class of pulverized coal plants.
Wet bottom boiler
A wet bottom boiler, also called a slag tap furnace, is a coal-fired furnace that removes ash as molten slag rather than dry ash, mainly for low-ash-fusion coals.
Wet limestone scrubbing
Wet limestone scrubbing is a flue gas desulfurization process that removes sulfur dioxide from coal-fired power plant exhaust with a limestone slurry, producing gypsum. It is the most widely used desulfurization method.