Coal liquefaction is the process of producing liquid fuels from coal. Coal liquifaction is a means of addressing the many energy applications that are suited for consuming liquids. The technology entails heating coal, often with various reagents such as hydrogen, which produces a liquid. The technologies can be controversial since they often generate large volumes of waste. The economic attractiveness of coal liquifaction is coupled to the price of petroleum. Related, competing technologies include coal gasification.
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Famous quotes containing the word coal:
“Coal lay in ledges under the ground since the Flood, until a laborer with pick and windlass brings it to the surface. We may will call it black diamonds. Every basket is power and civilization. For coal is a portable climate.”
—Ralph Waldo Emerson (1803–1882)