Burning
Combustion or burning is a complex sequence of exothermic chemical reactions between a fuel and an oxidant accompanied by the production of heat or both heat and light in the form of either a glow or flames.
Direct combustion by atmospheric oxygen is a reaction mediated by radical intermediates. The conditions for radical production are naturally produced by thermal runaway, where the heat generated by combustion is necessary to maintain the high temperature necessary for radical production.
In a complete combustion reaction, a compound reacts with an oxidizing element, such as oxygen or fluorine, and the products are compounds of each element in the fuel with the oxidizing element. For example:
A simpler example can be seen in the combustion of hydrogen and oxygen, which is a commonly used reaction in rocket engines:
The result is water vapor.
In the large majority of the real world uses of combustion, the oxygen (O2) oxidant is obtained from the ambient air and the resultant flue gas from the combustion will contain nitrogen:
As can be seen, when air is the source of the oxygen, nitrogen is by far the largest part of the resultant flue gas.
In reality, combustion processes are never perfect or complete. In flue gases from combustion of carbon (as in coal combustion) or carbon compounds (as in combustion of hydrocarbons, wood etc.) both unburned carbon (as soot) and carbon compounds (CO and others) will be present. Also, when air is the oxidant, some nitrogen can be oxidized to various nitrogen oxides (NOx).
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Burning Man is an annual art event and temporary community based on radical self expression and self-reliance in the Black Rock Desert of Nevada.
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Burning Man or )'(is an annual event held in the Black Rock Desert, in Northern Nevada. The event starts on the Monday before, and ends on the day of, the American Labor Day ...
Burning Man - Wikipedia, the free encyclopedia
Combustion or burning is a complex sequence of exothermic chemical reactions between a fuel and an oxidant accompanied by the production of heat or both heat and light in the form ...
Combustion - Wikipedia, the free encyclopedia
burn·ing  (bûr n ng) adj. 1. Marked by flames or intense heat: a burning sun. 2. Characterized by intense emotion; passionate: a burning desire for justice.
burning - definition of burning by the Free Online Dictionary ...
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