Process for solvent refining of coal using a denitrogenated...

Details Process for solvent refining of coal using a denitrogenated... Process for solvent refining of coal using a denitrogenated...

C - Chemistry, Metallurgy

10

G

196/5.8

C10G 1/06 (2006.01) C10G 1/00 (2006.01) C10G 1/08 (2006.01)

Patent

CA 1215664

ABSTRACT A process is disclosed for the solvent refining of non-anthracitic coal at elevated temperatures and pressure in a hydrogen atmosphere using a hydrogen solvent which before being recycled in the solvent refining process is subjected to chemical treatment to extract substantially all nitrogenous and phenolic constituents from the solvent so as to improve the conversion of coal and the production of oil in the solvent refining process. The solvent refining process can be either thermal or catalytic. The extraction of nitrogenous compounds can be performed by acid contact such as hydrogen chloride or fluoride treatment, while phenolic extraction can be performed by caustic contact or contact with a mixture of silica and alumina.

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