|Home » Forums » Value Added Wood Products Forum » Message||Login|
You are not logged in. Consider these WOODWEB Member advantages:
To ask a question4/30
My question is:What happen when you burn a piece of wood or lumber?
The wood oxidizes through combustion.
When you burn wood,or anything for that matter, You release the carbon atoms in it.
Are you referrring to pyrolisis(gasification) as result of heat?Or perhaps the fire triangle,heat,oxygen and fuel(wood).Have a good one!
When the wood is first heated, it releases its moisture. Then with additional heat the wood decomposes. You will get primarily methane gas, CH3. As this burns, you will get CO2 and H2O, if there is enough oxygen; if oxygen is limited, then CO and a variety of gases (smoke) that will condense and form creosote. After the methane gas, then you will have carbon left which glows bright red at about 1100 F and comsines with oxygen to form CO or CO2 depending onthe availability of oxygen. If there is no oxygen, then you will have pure carbon left that will not burn. THis carbon is called charcoal. Sometimes charcoal is combined with corn starch and maybe sopme wax to make the charcoal that is used for backyard grilling.
when we burn wood, it first releases moisture before its carbon atoms are released. Before burning wood it is usually best to dry it out first. Moisture affects the burning process, with un-burnt hydrocarbons going up the chimney.