The reason as to why a gas flame would be an orange colour would be from an incomplete combustion reaction. This occurs when paper is burned; the paper is reacting with the oxygen in the air, and it producing CO2, Carbon (ash), CO and H2O. This reaction can be represented in a chemcial equation; CH3 + O2 -> CO2 + H2O + CO + C .
Many common flames involve combustion of carbon - either in the form of coal or as a hydrocarbon. Incomplete combustion of carbon results in the formation of carbon monoxide. The oxidation of carbon monoxide to carbon dioxide results in an orange-yellow flame.
A blue flame means you are getting a good gas/air mixture.
If it is orange or yellow then there is more gas than air and should be adjusted.
because the pressure is being released when you first turn it on, then it levels out to what you adjusted it to
Not enough oxygen
To much to much oxygen
Improper gas/air mixture.
The flame goes out because you turned it off.
Closing the gas tap a little reduces the amount of gas flowing into the burner. This causes a reduction in flame.
The hotter a hydrocarbon gas burns, the bluer the flame. An orange flame indicates a cool flame with incomplete combustion since soot (unburnt carbon) glows orange. Hydrogen gas burns so completely and so hot that it emits light in the ultraviolet. You cannot see a hydrogen gas flame. Alcohol fires, similarly, tend to burn very efficiently and are nearly invisible--as anybody who watches NASCAR races knows.
You turn the gas control knob, son.
The sodium turns the flame bright orange..
The flame appears to have an orange color depending on the amount of gas being burned. The orange color is also due to the light spectrum that your eyes are catching.
Well like with any flame, the lighter the flame, the higher the temperature of the flame. If the flam is burning Yellow, it is at a higher temperature and is burning more oxygen than an orange flame is. That is your difference other than the color.
Improper gas/air mixture.
The flame goes out because you turned it off.
A blue flame means you are getting a good gas/air mixture. If it is orange or yellow then there is more gas than air and should be adjusted.
Closing the gas tap a little reduces the amount of gas flowing into the burner. This causes a reduction in flame.
They just turn the gas off
The hotter a hydrocarbon gas burns, the bluer the flame. An orange flame indicates a cool flame with incomplete combustion since soot (unburnt carbon) glows orange. Hydrogen gas burns so completely and so hot that it emits light in the ultraviolet. You cannot see a hydrogen gas flame. Alcohol fires, similarly, tend to burn very efficiently and are nearly invisible--as anybody who watches NASCAR races knows.
prevents soot generation
yellow flame needs more air or cleaned orange flame could indicate moisture in the fuel if propane have your tank treated your L.P. dealer should be able to do this also I have seen this when people use hemidfers the orange is burnning of the minerals in the water
When you reduce the gas, the flame goes down because you are starving the flame. Slowly turning off the gas is the correct way to put out a Bunsen burner. Never blow it out or gas will collect in the room.