Sulfur Recovery Daily Question 2018.9.11
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Q: What is the explosion limit? A: An explosive mixture composed of flammable gases, vapors, or combustible dusts and air can explode when exposed to fire. This range of concentrations at which an explosion can occur is called the explosive limit; the lowest concentration at which an explosion can take place is known as the lower limit, while the highest such concentration is referred to as the upper limit. It is usually expressed as a volume percentage of the combustible gas, vapor, or dust in the air.
The explosion limit, also known as the explosive concentration limit, refers to the fact that a combustible substance (combustible gas, vapor, or dust) must be uniformly mixed with air (or oxygen) within a certain concentration range to form a premixed gas; only when this premixed gas comes into contact with a source of ignition will an explosion occur. This concentration range is called the explosive range
A mixture of combustible gases, vapors, or combustible dusts with air that can explode when exposed to fire. This range of concentrations at which an explosion can occur is called the explosive limit; the lowest concentration at which an explosion can take place is known as the lower limit, while the highest such concentration is referred to as the upper limit. It is usually expressed as a volume percentage of the combustible gas, vapor, or dust in the air.
Combustible materials (combustible gases, vapors, and dusts) must be evenly mixed with air (or oxygen) within a certain concentration range to form a premixed gas; an explosion will occur only when this mixture comes into contact with a source of ignition. This concentration range is known as the explosive limit, or explosion concentration limit. For example, the explosive limit of a mixture of carbon monoxide and air is 12.5%–74%. The lowest and highest concentrations at which a flammable mixture can explode are referred to as the lower explosive limit and the upper explosive limit, respectively; these are sometimes also called the lower ignition limit and the upper ignition limit. It does not explode or catch fire when below the lower explosion limit ； It will not explode at levels above the upper explosion limit, but it can burn.
There are upper and lower limits to the ratio of combustible gas to air; the lower the lower limit, the more dangerous it is.
When the vapor of flammable gases or liquids (or flammable dusts) mixes with air and reaches a certain concentration, an explosion occurs upon encountering a source of fire. This range of concentrations at which an explosion can occur is called the explosive limit, and it is usually expressed as the volume percentage of the flammable gas, vapor, or dust in the air.
The explosion limit, also known as the explosive concentration limit, refers to the fact that a combustible substance (combustible gas, vapor, or dust) must be uniformly mixed with air (or oxygen) within a certain concentration range to form a premixed gas; only when this premixed gas comes into contact with a source of ignition will an explosion occur. This concentration range is called the explosive range.
Combustible materials (combustible gases, vapors, and dusts) must be evenly mixed with air (or oxygen) within a certain concentration range to form a premixed gas; an explosion will occur only when this mixture comes into contact with a source of ignition. This concentration range is known as the explosive limit, or explosion concentration limit. For example, the explosive limit of a mixture of carbon monoxide and air is 12.5%–74%. The lowest and highest concentrations at which a flammable mixture can explode are referred to as the lower explosive limit and the upper explosive limit, respectively; these are sometimes also called the lower ignition limit and the upper ignition limit. It does not explode or catch fire when below the lower explosion limit ； It will not explode at levels above the upper explosion limit, but it can burn.
Combustible materials (combustible gases, vapors, and dusts) must be evenly mixed with air (or oxygen) within a certain concentration range to form a premixed gas; an explosion will occur only when this mixture comes into contact with a source of ignition. This concentration range is known as the explosive limit, or explosion concentration limit.
The range of compositions in which a flammable substance (gas or dust) mixed with other gases (such as air) can explode. It is generally expressed as the volume fraction or mass density of flammable substances. Such as hydrogen 4.1%—72.4% (volume fraction) ； Flax dust: 16–50 grams/m³ (mass density).
The lowest and highest concentrations that can produce intense light and heat along with a rapid expansion in volume