The flammability of most hydrocarbons have limits when it comes to the ratio with it and air. With this concept in mind, stopping them from combusting may be possible under certain circumstances and can be controlled. This may be called as deflagration where it literally means to burn down.
Due to a Clean Air Act from the United States of America, a lot of industries and manufacturers have now pushed through controlling the release of combusted gases and liquids in their factories. There are ways to do his and one invention that stuck out completely is the detonation arrestor. This makes control and managing the materials that are hazardous a lot easier.
In 1990, Nicholas Roussakis and other inventors made Flame Arresters or Arrestors as their initial mechanism to burn down any ignition inside a pipe. This is in order to prevent it from tracing back to the source of the tank and further make damages. But there is a difference between that and a detonation arrester.
The detonation kind is actually innovated from the regular arrestor in order to hold and manage extreme pressures and supersonic speed, which is 1500 PSI or ten MPa, and 2500 mps respectively. Functionally, this is installed between two sources or pipes where gas is free flowing in between them. So in case of ignition from either side, it would diminish it until it is gone.
This is a passive device so there are no moving parts inside it and should be working once it is installed. Inside it is composed of many layers of metallic ribbons that has crimped corrugations. This allows the travel of gas to flow but combustion to stop at certain levels.
The burning is studied and calculated in various types of hydrocarbons in order to make up the compression of these metal ribbons which is the Upper and Lower Explosive Limits. These tests in the laboratory revealed the percentages at which points to these gases would burn and extinguish. This is depending on the ratio of the hydrocarbon and the air.
For LEL, the amount of hydrocarbon is increased up to the point that it starts combusting, while further increasing it until it stops, it would be recorded as its UEL. This is to know at which ratio of the air and hydrocarbons a certain gas would be able to take. This is then applied in how compressed the ridges are in the core of the arrester.
With Methane gas as example, its LEL is five percent while the UEL is fifteen percent. This means that when the gas is at five it would burn up until it reaches fifteen percent. Although there are special cases in some hydrocarbons where they still combust even with no oxygen in the air.
The industries that are utilizing this may call this as their vapor control system. The gases contained may be vented to the atmosphere and therefore controlling them should be a requirement and to ensure safety precautions for the workers and especially the environment. This prevents any fire or explosions within the area.
Due to a Clean Air Act from the United States of America, a lot of industries and manufacturers have now pushed through controlling the release of combusted gases and liquids in their factories. There are ways to do his and one invention that stuck out completely is the detonation arrestor. This makes control and managing the materials that are hazardous a lot easier.
In 1990, Nicholas Roussakis and other inventors made Flame Arresters or Arrestors as their initial mechanism to burn down any ignition inside a pipe. This is in order to prevent it from tracing back to the source of the tank and further make damages. But there is a difference between that and a detonation arrester.
The detonation kind is actually innovated from the regular arrestor in order to hold and manage extreme pressures and supersonic speed, which is 1500 PSI or ten MPa, and 2500 mps respectively. Functionally, this is installed between two sources or pipes where gas is free flowing in between them. So in case of ignition from either side, it would diminish it until it is gone.
This is a passive device so there are no moving parts inside it and should be working once it is installed. Inside it is composed of many layers of metallic ribbons that has crimped corrugations. This allows the travel of gas to flow but combustion to stop at certain levels.
The burning is studied and calculated in various types of hydrocarbons in order to make up the compression of these metal ribbons which is the Upper and Lower Explosive Limits. These tests in the laboratory revealed the percentages at which points to these gases would burn and extinguish. This is depending on the ratio of the hydrocarbon and the air.
For LEL, the amount of hydrocarbon is increased up to the point that it starts combusting, while further increasing it until it stops, it would be recorded as its UEL. This is to know at which ratio of the air and hydrocarbons a certain gas would be able to take. This is then applied in how compressed the ridges are in the core of the arrester.
With Methane gas as example, its LEL is five percent while the UEL is fifteen percent. This means that when the gas is at five it would burn up until it reaches fifteen percent. Although there are special cases in some hydrocarbons where they still combust even with no oxygen in the air.
The industries that are utilizing this may call this as their vapor control system. The gases contained may be vented to the atmosphere and therefore controlling them should be a requirement and to ensure safety precautions for the workers and especially the environment. This prevents any fire or explosions within the area.
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This article collected, selected and written by: Author Van Hoc
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