Regarding the explosion limit
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I have a question: fuel explodes when it comes into contact with an open flame in an explosive zone. So, when the fuel is almost completely burned, its concentration should reach the explosive zone; why then doesn’t an explosion occur at that time?
It needs to be evenly mixed within a certain concentration range.
The oxygen that had been fully mixed during the combustion process is also consumed; without oxygen, no explosion can occur. The newly added oxygen has not yet mixed thoroughly with the fuel, so the subsequent combustion is a diffusion combustion, and the combustion rate is determined by the rate of oxygen diffusion – hence, no explosion takes place
Thank you for the reply: handshake
It was explained very clearly, thank you:handshake