LIQUEFACTION STUDY OF SEVERAL COALS AND A CONCEPT FOR UNDERGROUND LIQUEFACTION.

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Skidmore, Duane R.
Konya, Calvin J.
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COAL - Chemical Reactions - COAL DEPOSITS - COAL RESEARCH - HYDROGEN - Chemical Reactions;
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In the absence of hydrogen several coal types undergo a swelling and spalling reaction early in their liquefaction reaction with hydrogen donor solvents. The coals increase their reactivity in the order semi-anthracite, lignite, and sub-bituminous. Increased temperature and reaction time increase the extent of reaction. To utilize these observations a concept is presented which may lead to an underground coal liquefaction process.
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