Thursday, December 27, 2007

Underground Coal Gasification


An LLNL research program on Underground Coal Gasification. "Gasification is a process by which coal or other hydrocarbons are converted into a synthesis gas (syngas) at elevated pressures and temperatures, usually in a commercially purchased gasifier. Gasification can be used to create many products (electric power, liquid fuels, hydrogen, synthetic gas) and provides great opportunities for pollution control, especially sulfur, nitrous oxides, and mercury. Underground coal gasification (UCG) converts coal in-situ into a synthesis gas through the same chemical reactions. Because this process gasifies coal at depth under many different geological circumstances, UCG could increase the coal resource available for utilization enormously. A 300-400% increase in coal reserves and even greater increase of gasification is possible...."