Pyrolysis

Pyrolysis is the chemical breakdown of compounds, which contain carbon, by heat. Pyrolysis happens under pressure and if the temperature is above 430 °C (800 °F). It is normally used for organic things, and is involved in charring.

Pyrolysis Media

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  Burning pieces of wood, showing various stages of pyrolysis followed by oxidative combustion.

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  日本の楢などの黒炭

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  Processes in the thermal degradation of organic matter at atmospheric pressure.

• Charcoal briquettes, often made from compressed sawdust or similar, in use.

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  A blacksmith's forge, with a blower forcing air through a bed of fuel to raise the temperature of the fire. On the periphery, coal is pyrolyzed, absorbing heat; the coke at the center is almost pure carbon, and releases a lot of heat when the carbon oxidizes.

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  Typical organic products obtained by pyrolysis of coal (X = CH, N).

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  Carbon fibers produced by pyrolyzing a silk cocoon. Electron micrograph, scale bar at bottom left shows 100 μm.

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  Illustrating inputs and outputs of methane pyrolysis, an efficient one-step process to produce Hydrogen and no greenhouse gas

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  Illustration of the metalorganic vapour phase epitaxy process, which entails pyrolysis of volatiles

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  Production of Hydrogen, Methane, and Tars when creating Biochar