Process for the isolation of chemicals from processed coals

Details Process for the isolation of chemicals from processed coals Process for the isolation of chemicals from processed coals

1977-02-14

1978-11-28

Levine, Herbert

Mineral oils: processes and products

Fractionation

Adsorption

208 8, 210 31C, C10G 2500

Patent

active

041274750

ABSTRACT:
Processed coal such as solvent refined coal are subjected to multistage liquid chromatographic fractionation. There is employed a succession of eluants of progressively varying properties, this succession having the effect of removing from the substrate a corresponding succession of sharply defined, chemically differentiated product groups each of value as an industrial raw material. An installation for practising the invention on a continuous basis is described.

REFERENCES:
patent: 2776250 (1957-01-01), Capell et al.
patent: 2776297 (1956-10-01), Neuworth
patent: 2930821 (1960-03-01), Schwoegler et al.
Mair et al., "Journal of Research," National Bureau of Standards, vol. 32 (Apr. 1944) pp. 165 to 183.
"Chromatographic Adsorption and Silica Gel," The Davison Chemical Corporation, Baltimore, Md. pp. 1 to 5 (1946).

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