Basic conditions for boiler combustion

When any substance is burned, there is a process of changing from an unburned state to a burning state. The occurrence and development of the combustion process must meet the following three conditions:

1-Combustible

All substances that can react chemically with oxygen or other oxidants in the air are called combustibles, such as wood, gasoline, coal, paper, sulfur, etc.

2-Oxidizer

Substances that can help and support the combustion of combustibles, which can oxidize and react with combustibles, are called oxidants. Usually, the oxidant we talk about refers to the oxygen that is widely present in the air.

3-Temperature (ignition source)

The ignition source refers to the energy source that supplies the combustible material and the combustion-supporting material for the combustion reaction. Generally, it is divided into two categories: direct fire source and indirect fire source.

Direct fire source: open flame, arc, spark, lightning strike of instantaneous high voltage discharge can ignite any combustible material.

Indirect fire sources mainly include: high temperature, which refers to high temperature heating, baking, accumulated heat, mechanical equipment failure, and friction. Spontaneous ignition refers to the fact that the substance itself heats up and burns by itself in the absence of an open flame and no external heat source.