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Author Topic: Why do natural gas and other hydrocarbons burn blue?  (Read 2192 times)

Offline chris

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I confess that I now know the answer, but it's such an interesting concept that I thought it would be worth raising here so that we can discuss it.

Who wants to have a go?


 

Offline damocles

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Re: Why do natural gas and other hydrocarbons burn blue?
« Reply #1 on: 11/04/2013 03:52:58 »
OK, I will buy in. It is because of an emission band in the spectrum of C2, which is a strongly fluorescent intermediate in the combustion reaction scheme. CH also has an emission band in the blue, and is abundant in the flame.
 

Offline chris

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Re: Why do natural gas and other hydrocarbons burn blue?
« Reply #2 on: 11/04/2013 21:50:52 »
Yes, well done. I was lucky to meet a combustion chemist for lunch a couple of days ago and had the most facinating conversation. He explained that most of that blue is CH and CO recombining and also radicals that dump energy using photon emission.

Chris
 

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Re: Why do natural gas and other hydrocarbons burn blue?
« Reply #2 on: 11/04/2013 21:50:52 »

 

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