Flue gas
Encyclopedia : F : FL : FLU : Flue gas
Flue gas is gas that exits to the atmosphere via a flue, which is a pipe or channel for conveying exhaust gases from a fireplace, oven, furnace, boiler or steam generator. Quite often, it refers to the combustion exhaust gas produced at power plants. Its composition depends on what is being burned, but it will usually consist of mostly carbon dioxide (CO2) and water vapor as well as nitrogen and excess oxygen (derived from the combustion air). It also contains a small percentage of pollutants such as particulate matter, carbon monoxide, nitrogen oxides and sulfur oxides. At power plants, flue gas is often treated using filters and scrubbers, which remove certain pollutants. Electrostatic precipitators remove particulate matter and flue gas desulfurization captures the sulfur dioxide produced by burning fossil fuels, particularly coal.
There are some emerging technologies for removing certain pollutants emitted from power plants. In particular, GreenFuel Technologies [link] has demonstrated the reduction of 86% of NOx and 46% of CO2 from a power plant's smokestack. As yet, there is very little perfomance data available from large-scale industrial applications of such technologies.
See also
- Integrated Gasification Combined Cycle (often referred to as IGCC)
- Flue gas desulfurization (often referred to as FGD)
- Nitrogen oxides emission (often referred to as NOx)
- Flue gas emissions from fossil fuel combustion
- Flue gas stacks
- Combustion
From Wikipedia, the Free Encyclopedia. Original article here. Support Wikipedia by contributing or donating.
All text is available under the terms of the GNU Free Documentation License See Wikipedia Copyrights for details.