What is the meaning of spontaneous combustion? What is the meaning of spontaneous combustion?

This is an ignition phenomenon caused by the heat of the combustible gas mixture (or vapor) itself or contact with a non-sparking, flameless hot surface, which increases the temperature and increases the rate of chemical reaction. In combustion theory, spontaneous combustion is divided into two types: thermal spontaneous combustion and chain spontaneous combustion.

The theory of thermal spontaneous combustion holds that the calorific rate of the chemical reaction of the combustible gas mixture exceeds the heat dissipation rate of the system, so that there is excess heat to heat the combustible gas mixture, so that the chemical reaction accelerates rapidly with the increase of temperature, and then the temperature of the mixed gas rises rapidly until it causes the combustion of the mixed gas.

The theory of chain spontaneous combustion holds that the self-acceleration of chemical reactions does not necessarily depend on the accumulation of heat, but through the chain reaction, the activation center is rapidly increased to promote the continuous acceleration of the reaction until it ignites and burns. Spontaneous combustion is a complex chemical and physical phenomenon. In the case of flammable gas mixtures, a certain temperature must always be reached in the event of spontaneous combustion.

At the autoignition temperature, the combustible substance comes into contact with the air and does not require an open flame to combust. The natural point is not a fixed value, it depends mainly on the precipitation of heat during oxidation and the outward conduction of heat. It can be seen that the same combustible substance has different spontaneous ignition points due to different oxidation conditions and the influence of different factors.

**The most basic condition for combustion is that the instantaneous temperature reaches the ignition point, and the spontaneous combustion of the object indicates that the object itself is heated or the environment is overheated, which is caused by the temperature of the object reaching the ignition point.

Ignition is achieved without any auxiliary ignition energy.

The explanation of the word spontaneous combustion is: spontaneous combustion zìrán. (1) Ignition without direct fire or sparks in flammable substances (such as tarpaulins or damp forage) is usually caused by a slow oxidation process (such as atmospheric oxidation or bacterial fermentation) under conditions that cannot dissipate heat.

2) Ignition without flames or sparks (e.g. under high compression).

The explanation of the word spontaneous combustion is: spontaneous combustion zìrán. (1) Ignition without direct fire or sparks in flammable substances (such as tarpaulins or damp forage) is usually caused by a slow oxidation process (such as atmospheric oxidation or bacterial fermentation) under conditions that cannot dissipate heat.

2) Ignition without flames or sparks (e.g. under high compression). The structure is: self-combustion (single structure) combustion (left and right structure).

The phonetic pronunciation is: The part of speech is: the verb.

Pinyin is: zìrán.

What is the specific explanation of spontaneous combustion, we will introduce it to you through the following aspects:

1. Chinese dictionary [click here to view the details of the plan].

The temperature of the substance rises to the ignition point, and it burns automatically after a large amount of oxidation in the air, which is called spontaneous combustion. Translation of the word English spontaneouscombustion, German selbstentzündung(s), French combustionspontanée

2. Network Explanation.

Spontaneous combustion (natural phenomenon) Spontaneous combustion refers to the phenomenon that combustibles burn by self-heating or external heat without the action of an external ignition source in the air. According to the different heat sources, spontaneous combustion of substances is divided into two types: self-heating spontaneous combustion and heated spontaneous combustion. Under normal conditions, the oxidation process of combustible substances and air contact will occur slowly, but the speed is very slow, and the precipitation of heat is also very small, and at the same time, it continuously dissipates heat to the surrounding environment, and cannot emit light like combustion.

Verses about spontaneous combustion.

The heart empty fire spontaneously combusted, the heart empty fire spontaneously combusted, facing the full pond Qingfen, facing the soul of the quiet spontaneous combustion, which one.

Words about spontaneous combustion.

spontaneousfire

Idioms about spontaneous combustion.

Niu Zhu burns rhino, burns the eyebrows, burns the bran, burns the boiled beans, burns the broken arm, burns the body, burns the fried beans, burns the sensitive, burns the beans, burns the rhino, and Wen Qiao rekindles.

Words about spontaneous combustion.

The ashes are rekindled, the boiled beans are burned, the bran is burned, the embers are rekindled, the broken arm is burned, the body is burned, the cold ash is more urgent, the candle is burned, and the fried beans are burned.

Sentence formation about spontaneous combustion.

1. Spontaneous combustion and refusal of insurance will occur in the harm of unauthorized modification.

2. Due to the production process of the battery cell, the battery cell is overheated and melted or the shell of the product is scorched during the use of the battery pack, which further leads to spontaneous combustion and has potential safety hazards.

3. Wang Shilong said that since the sixth day of the first lunar month, there have been items at home anytime and anywhere without warning, and spontaneous combustion has occurred without warning.

4. The influence of different types of goaf leakage and wind on spontaneous combustion and ignition in goaf was analyzed.

5. Phosphine is a toxic gas that can spontaneously ignite in the air.

Spontaneous combustion refers to the spontaneous combustion of combustible substances due to heating or self-heating and heat storage without the action of external sparks, flames and other ignition sources. Spontaneous combustion of substances is divided into spontaneous combustion and heated spontaneous combustion, the two are different from each other, the former is the thermal effect of the substance itself, and the latter is the result of external heating.

The ignition point is not a fixed value, it mainly depends on the precipitation of heat during oxidation and the outward conduction of heat. The same kind of combustible material has different spontaneous ignition points due to different oxidation conditions and the influence of different factors. Common substances that can cause spontaneous combustion include plant products, oils and fats, coal and other chemicals.

Spontaneous combustion refers to the phenomenon that combustibles burn by self-heating or external heat under the action of no external ignition source in the air. According to the different heat sources, spontaneous combustion of substances can be divided into two types: spontaneous combustion and heated spontaneous combustion.

Typical spontaneous combustion.

The spontaneous combustion of white phosphorus is the most typical spontaneous combustion phenomenon, the ignition point of white phosphorus is very low, only 40 °C, and it is not that white phosphorus will not spontaneously burn below 40 °C, because once there is friction, the local temperature of white phosphorus rises to more than 40 °C, and it will burn. Because of the fact that white phosphorus is prone to spontaneous combustion, it is usually stored in water to isolate the air.

Spontaneous combustion in life.

The most likely contact in our daily life is probably the spontaneous combustion of the car, the combustion of the car is generally caused by the damage of the oil circuit, circuit and car modification parts, the car is driven for a long time, overloaded, so that the engine parts run in front of the shed for a long time, resulting in a rise in temperature, coupled with the hot weather, the engine ventilation equipment is not good, it may cause a short circuit in the power cord, causing spontaneous combustion**. However, it should be noted that the spontaneous combustion mentioned here is not the same concept as the spontaneous combustion mentioned in physics and chemistry, because the spontaneous combustion of automobiles is mostly caused by short-circuit electric fire, which belongs to the external chain ignition source, so it cannot be regarded as spontaneous combustion.