Matters regarding the combustion of VOC gases
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Generally, VOC gas treatment involves catalytic combustion. So, if the VOC concentration is below the explosive limit and there is no catalyst, but the temperature reaches the level required for catalytic combustion, will the VOCs in the gas burn or explode?
Of course it will. In the past, explosion accidents have occurred due to excessively high concentrations of photochemical oxygen and carbon-based VOCs. Therefore, ordinary carbon absorbers are equipped with explosion-proof devices and fire-suppression sprinklers. An alarm should also be provided when the temperature is too high.
The first sentence is incorrect. There are various processes such as catalytic oxidative combustion, thermal oxidative combustion, regenerative oxidative combustion, regenerative catalytic oxidative combustion, condensation recovery, activated carbon adsorption, molecular sieve adsorption, and resin-based adsorption for recovery. For gas components that do not reach the lower explosion limit, they theoretically cannot explode but can burn; in practice, they also do not explode. However, if accumulation occurs and leads to a high local concentration of these light components, an explosion may still happen.
In this way, I’ve learned it; thank you, expert