Combustion Elements and Fire Extinguishing Methods
Release time:
17 Dec,2025
Combustion is a phenomenon that arises from the combined action of four key elements: fuel, oxygen, heat, and free radicals. The chain reaction formed by these four combustion factors begins when combustible materials and oxygen, upon being heated or exposed to light, lose their stability and generate free radicals. As intermediate species in the combustion reaction, free radicals, under the influence of heat, give rise to even more free radicals, thereby sustaining and perpetuating the combustion process and ultimately leading to stable combustion.
The four elements of combustion:
Combustion is a phenomenon that arises from the combined action of four key elements: fuel, oxygen, heat, and free radicals. The chain reaction formed by these four combustion factors begins when combustible materials and oxygen, upon being heated or exposed to light, lose their stability and generate free radicals. These free radicals, serving as intermediates in the combustion reaction, under the influence of heat, give rise to even more free radicals, thereby initiating and sustaining the combustion process and ultimately leading to stable combustion.
Four fire-extinguishing methods:
Cooling: Reducing the temperature of the ignition system slows down the generation of free radicals until they completely cease to form. Isolation: Cutting off the contact between combustibles and oxygen prevents the two types of free radicals from combining. Asphyxiation: Lowering the oxygen concentration inhibits the reaction between combustibles and oxygen. Inhibition: Additives and inorganic salts react chemically with free radicals, forming stable compounds that suppress the formation of new free radicals.
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