Flame at flare is blue??? 2

[nong]

Hello all,
I have question about why flare is blue in offshore natural gas plant because we have various opinion. Someone said because of H2S (>80 ppm), someone said because of CO2 (>65%) in flare. From my memory, blue flame is hotter than the orange flame since CO2 is not flamable and giving very little BTU so CO2 'd not be blue fame?
Pls suggest.
Thank you

 

[cougarfan]

Contact your flare mfr and they can explain further - blue flame will be hotter and shows combustion of the flame - but your flare mfr will help you out.....

 

[MOCHEM]

daer
frome my experriance the blue flame indecate that hydrogen gase passing to the flair system ,i facied this case mor than one time and every time when we do the check we find that ther is hydrogen passing to the blow dowen system ,and when we stop this passing the flair return to the orang.
also i know that the normal pentain make the same case ,but for normal pentain i am not sure partucaly.
regards.

 

[Keithbowers]

A Blue flame indicates ahigh hydrogen content. Carbon in the flame incandesces during oxidation and radiates a lot of heat. Hydrogen does not glow or radiate light or heat. The blue flame is either high in hydrogen, hydrogen sulfide or methane. If hydrogen sulfide is the material, you will seea faint blue smoke plun during the day. No smoke plume is visible from methane or hydrogen