Coal composition, liquefaction behavior

Data Obtained from the Study of Solid Coal. The quantitative ratio of the atoms in the organic part of coal gives the first information about its chemical structure. For example, for two coals whose liquefaction behavior has been extensively studied, the elemental composition for 100 atoms is as shown below. 

In the rest of this section, coal liquefaction researchers of the United States, South Africa, Australia, Japan, Canada, and Great Britain describe their country s coal reserves and origins, and the significance of coal composition to liquefaction behavior. 

Whitehurst, D.D., "Relationships Between Recycle Solvent Composition and Coal Liquefaction Behavior", Proceedings of the EPRI Coal Liquefaction Contractors Meeting, Palo Alto, Calif., May 1978. 

The Effect of Solvent Compositions on the Liquefaction Behavior of Western Subbituminous Coal... 

Another aspect of coal behavior in relation to liquefaction that has also received (and is stiU receiving) some attention is the relationship of liquid yield to petrographic composition (Chapter 4) (Gagarin and Krichko, 1992). For example, vitrinite can be converted to liquid products readily as can exinite, but fusinite is quite resistant to liquefaction conditions and, thus, the petrographic composition of coals (whatever the rank) may be an important variable in determining the yields of liquid products. 

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