- Flue gas
Flue gas is
gasthat exits to the atmosphere via a flue, which is a pipe or channel for conveying exhaust gases from a fireplace, oven, furnace, boileror steam generator. Quite often, it refers to the combustionexhaust gas produced at power plants. Its composition depends on what is being burned, but it will usually consist of mostly nitrogen(typically more than two-thirds) derived from the combustion air, carbon dioxide(CO2) and water vaporas well as excess oxygen(also derived from the combustion air). It further contains a small percentage of pollutants such as particulate matter, carbon monoxide, nitrogen oxidesand sulfur oxides.
For each ton of oil or coal fuel burned at a power plant, the flue gas contains 3 to 3.5 tons of carbon dioxide.
At power plants, flue gas is often treated with a series of chemical processes and
scrubbers, which remove pollutants. Electrostatic precipitators or fabric filters remove particulate matter and flue gas desulfurizationcaptures the sulfurdioxide produced by burning fossil fuels, particularly coal. Nitrogen oxides are treated either by modifications to the combustion process to prevent their formation, or by high temperature or catalytic reaction with ammonia or urea. In either case, the aim is to produce nitrogen gas, rather than nitrogen oxides. In the US there is a rapid deployment of technologies to remove mercury from flue gas - typically by adsorption on sorbents or by capture in inert solids as part of the flue gas desulfurization product.
Technologies based on regenerative capture by amines for the removal of CO2 from flue gas have been deployed to provide high purity gas to the food industry. They are now under active research as a method for CO2 capture for long-term storage as a means of greenhouse gas remediation.
There are a range of emerging technologies for removing pollutants emitted from power plants. As yet, there is very little performance data available from large-scale industrial applications of such technologies and none has achieved significant penetration of the enormous worldwide market.
Flue gas emissions from fossil fuel combustion
Flue gas stacks
Flue gas desulfurization(often referred to as FGD)
Integrated Gasification Combined Cycle(often referred to as IGCC)
Nitrogen oxides emission (often referred to as NOx)
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flue gas — kūryklų dujos statusas T sritis chemija apibrėžtis Kūryklose deginamo kuro dujiniai produktai. atitikmenys: angl. combustion gas; flue gas; stack gas rus. дымовой газ; топочный газ … Chemijos terminų aiškinamasis žodynas
flue gas — dūmų dujos statusas T sritis chemija apibrėžtis Kuro nevisiško sudegimo dujiniai produktai. atitikmenys: angl. flue gas; furnace gas rus. дымовой газ … Chemijos terminų aiškinamasis žodynas
flue gas — dūmų dujos statusas T sritis ekologija ir aplinkotyra apibrėžtis Kuro nevisiško sudegimo dujiniai produktai, kuriuos sudaro anglies oksidas (monoksidas CO ir dioksidas CO₂), azoto oksidas (NO, NO₂, NO₃), vandenilio sulfidas H₂S, sieros dioksidas… … Ekologijos terminų aiškinamasis žodynas
flue gas — dūmai statusas T sritis Energetika apibrėžtis Medžiagų deginimo produktai, kurių dalelių matmenys (0,1–10) μm. atitikmenys: angl. flue gas; smoke vok. Rauch, m rus. дым, m pranc. fumée, f … Aiškinamasis šiluminės ir branduolinės technikos terminų žodynas
Flue gas — Gas that is left over after fuel is burned and which is disposed of through a pipe or stack to the outer air. California Energy Comission. Dictionary of Energy Terms … Energy terms
Flue Gas — The gas resulting from the combustion of a fuel that is emitted to the flue … Energy terms
flue gas — noun : the mixture of gases resulting from combustion and other reactions in a furnace, passing off through the smoke flue, composed largely of nitrogen, carbon dioxide, carbon monoxide, water vapor, and often sulfur dioxide, and sometimes… … Useful english dictionary
flue gas — /ˈflu gæs/ (say flooh gas) noun the gaseous combustion products from a boiler furnace consisting of a mixture of carbon dioxide, carbon monoxide, nitrogen, oxygen, and steam … Australian English dictionary
Flue gas desulfurization — (FGD) is the technology used for removing sulfur dioxide (SO2) from the exhaust flue gases in power plants that burn coal or oil to produce steam for the steam turbines that drive their electricity generators. Sulfur dioxide is responsible for… … Wikipedia
Flue gas emissions from fossil fuel combustion — refers to the combustion product gas resulting from the burning of fossil fuels [http://www.epa.gov/ttn/chief/ap42/index.html Compilation of Air Pollutant Emission Factors] ] . Most fossil fuels are combusted with ambient air (as differentiated… … Wikipedia