Nitrogen oxides are produced in the combustion process by two different mechanisms: (a) burn-ing the nitrogen in the fuel, primarily coal or heavy oil (fuel NO x); and (b) high-temperature oxidation of the molecular nitrogen in the air used for combustion (thermal NO x). Formation of fuel NO x depends on combustion conditions, such as
Nitric oxide is a colorless, flammable gas with a slight odor. Nitrogen dioxide is a deep red-orange gas that is poisonous but not flammable. It, along with aerosols, is responsible for the reddish-brown color of smog. At high concentrations it is highly toxic, and can cause serious lung damage.
Natural gas (also called fossil gas; sometimes just gas) is a naturally occurring hydrocarbon gas mixture consisting primarily of methane, but commonly including varying amounts of other higher alkanes, and sometimes a small percentage of carbon dioxide, nitrogen, hydrogen sulfide, or helium. It is formed when layers of decomposing plant and animal matter are exposed to intense heat and
The principle source of acid rain-causing pollutants, sulfur dioxide and nitrogen oxides, are coal fired power plants. Since natural gas emits virtually no sulfur dioxide, and up to 80 percent less nitrogen oxides than the combustion of coal, increased use of natural gas could provide for fewer acid rain causing emissions.
Nitrogen Oxides | UCAR Center for Science Education
8.7. Nitrogen Oxides (NOx) Emissions | netl.doe.gov
NOx can react to form nitrous oxide (N 2 O), which is a greenhouse gas, and contribute to global warming. Coal usually contains between 0.5 and 3 percent nitrogen on a dry weight basis. The nitrogen found in coal typically takes the form of aromatic structures such as pyridines and pyrroles.
01/01/2016 · During the fossil fuel combustion process in gas-tube boilers furnaces, nitrogen contained in the air and fuel actively interacts with oxygen to form nitrogen oxide NO, dinitrogen oxide N2O, and nitrogen dioxide NO2.