Why are explosion vents installed on the exhaust pipelines of environmental protection equipment
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The exhaust pipeline of the environmental protection device uses negative pressure to draw in waste gas; it’s really hard to understand why an explosion-proof valve is needed there.
It is mainly used to relieve pressure in case of an accidental combustion or explosion inside the pipeline
If the negative pressure is high, could the rupture disc explode in the opposite direction?
Explosion protection is essentially focused on prevention; negative pressure is only relevant under normal conditions and is certainly not needed in such situations. However, in the event of an accident or a pipeline explosion when negative pressure cannot be generated quickly, the explosion relief valve comes into play
Pressure release. The negative pressure isn’t that high.
It seems to be used for special situations. For example, the equipment stops working; there is a power outage. Without vacuuming, gas may continue to build up pressure.
This is generally installed on the RTO exhaust gas inlet line. Due to the complex composition of the gases entering the RTO exhaust line, certain areas may reach explosive conditions; a flashback in the RTO could lead to ignition and an explosion.
If it really explodes, will the blast shield be useful? It’s unimaginable
Check the requirements of safety design specifications – it is clearly stated that on any equipment or pipeline where overpressure incidents that could pose a danger might occur, reliable protective devices must be installed to prevent damage to the equipment and pipelines as well as casualties in the event of pressure loss of control； As the name implies, an explosion vent is designed to prevent explosions from causing damage to equipment or pipelines; it is a type of pressure release device ； The explosion-proof disc can withstand a certain level of pressure; when this limit is exceeded, the disc breaks apart to automatically release pressure and thus provide protection ； In general, safety valves are commonly used in high-pressure equipment, pipelines, and other pressure vessels ； Explosion-proof valves are used for equipment and pipelines under low pressure or slightly positive pressure ； In my personal view, learn together*.
Yes, devices or systems that have a high instantaneous discharge rate require rupture disks, such as furnaces