The explosion limit of gas mixture explosion (1)

(1) Definition

Explosion limit refers to the concentration range where combustible gas, vapor or combustible dust and combustion-supporting gas (such as air or other suitable gas) are uniformly mixed within a certain concentration range and will explode when encountering fire sources and other external energy.

The concentration here refers to the volume fraction (V/V) of the explosive body (combustible substance) in the combustion-supporting gas.

The explosion limit is an important indicator to measure the explosion risk of explosive gases or liquids

If the difference between the upper limit and the lower limit of the explosion limit is divided by the lower limit, the result is the degree of danger, and the expression is

In the formula, X ₁ represents the lower explosion limit; X ₂ represents the upper explosion limit; R represents the risk

Generally speaking, the larger the R value, the greater the risk of explosion

Table 13-1 Explosion limits of some common gases and vapors in the air (normal temperature and pressure)

Flash explosion is also a kind of explosive mixture explosion, and it is relatively common.

Related Links: Reaction History of Gas Mixture Explosion