The three necessary conditions for combustion are

The three necessary conditions for combustion are: fuel, oxygen and energy (the minimum temperature required to ignite fuel).

Without any of these conditions, combustion cannot be carried out. Among them, fuel and oxygen are two kinds of reactants, and only when they fully contact and reach the ignition point can the combustion reaction begin and further release energy.

Combustion is an exothermic reaction, usually accompanied by flame, smoke, light and so on. Therefore, combustion is also called oxidation reaction. This is because when the fuel is combined with oxygen in the combustion reaction, an oxidation chemical reaction will occur, so that the carbon, hydrogen and other atoms in the fuel can recombine with oxygen atoms into products such as carbon dioxide and water vapor, and at the same time, a lot of energy will be released.

In practical application, we can often see various combustion reactions. Such as daily matches, gas stoves, automobile engines, rocket propulsion, etc. Both need fuel and oxygen to work properly. In these applications, the choice and use of fuel may have a far-reaching impact on combustion efficiency, safety and environmental protection.

The impact is as follows:

1. First of all, the choice of fuel is very important. Different fuels will produce different calorific value and emissions when burning. For example, in industrial production, fossil fuels (such as coal, oil and natural gas) are the main energy sources, but their combustion will produce greenhouse gases such as carbon dioxide, which will lead to global warming and various environmental problems.

Therefore, more and more enterprises and countries turn to renewable energy (such as solar energy, wind energy and hydropower) to reduce their dependence on fossil fuels and reduce environmental pollution.

Secondly, the use of fuel is also one of the factors to be considered. In some occasions, such as fire scene, industrial furnace smelting and other high-temperature combustion processes, explosion-proof and fire-proof measures need to be taken to protect the surrounding environment and personal safety for safety reasons. For example, the laboratory needs to use explosive materials such as ammonium salt. At this time, users are required to have enough safety awareness and skills to ensure that there are no accidents in the experiment.

3. Finally, the combustion process also involves many other issues, such as combustion mechanism, product analysis, fire control and so on. When dealing with these problems, many subjects need to be involved, including chemistry, physics, material science, mechanical engineering and so on. Comprehensive application of multidisciplinary knowledge can help us have a deeper understanding of the combustion process and develop more efficient, safe and environmentally friendly combustion technology.

In a word, combustion is an indispensable part of our daily life and industrial production. For workers, it is necessary to have enough knowledge and skills to ensure an efficient, safe and environmentally friendly combustion process. At the same time, in the future development of science and technology, we need to constantly explore and innovate and strive to develop a more sustainable and green energy system.