Why does not wood melts . but it burns or ignites at higher temprature?

As wood is heated it first gives up its moisture. After the water boils off and its temperature is increased to 450�F. the wood particles begin evolving volatiles. Thereafter the volatiles and fixed carbon mix with oxygen and burn separately. All of the visible flames in wood fire are from combustion of the volatiles.Wood is composed of 79% combustibles and 21% water and ash. First the water boils off then at 450�F the wood particles begin evolving volatiles. Carbon ignites between 765�F and 1115�F the volatiles, which include hydrogen, Methane, Ethylene, Ethane, Benzene and Carbon Monoxide ignite within a range of 1000�F to 1300�F. The volatiles burn ten to one thousand times as fast as with a normal fire. Burning at higher temperatures is a major factor in reducing pollution.