Char

Look up char in Wiktionary, the free dictionary.

Char is the solid material that remains after light gases (e.g. coal gas) and tar have been driven out or released from a carbonaceous material during the initial stage of combustion, which is known as carbonization, charring, devolatilization or pyrolysis.

Further stages of efficient combustion (with or without char deposits) are known as gasification reactions, ending quickly when the reversible gas phase water gas shift reaction is reached.

See also

• Biochar
• Charcoal
• Coke (fuel)
• Petroleum coke
• Shale oil extraction

v t e Coal Coal by grade Peat1 Lignite Sub-bituminous coal Bituminous coal Anthracite Graphite1 Coal combustion Black coal equivalent Char Clean coal Coal preparation plant Coal seam fire Coke Coal tar Energy value Flue gas Fly ash Coal mining Coalfields Coal dust Coal gas Coal slurry Coal homogenization Coal liquefaction Environmental impact of the coal industry History Mining regions Peak coal Refined coal Coal town Coal types are ordered by grade. 1: peat is considered a precursor to coal, while graphite is only technically considered a coal type