the coal liquid which includes process solvent is fractionated in essentially three components one being a light gasoline fraction having a boiling point not greater than about 450 u00b0 f at atmospheric pressure the second being the 450 u00b0 850 u00b0 f recycle solvent and the other being a heavy src fraction the solvent refined coal src fraction typically has a boiling point in excess of 850 u00b0 f at atmospheric pressure the light fraction is obtained from distillation zone 18 via line 20 while the recycle solvent via line 21 and the src or solid fraction is obtained through line 22 because the fluidity of material from zone 18 via line 22 must be adequate for handling purposes the upper cut point of the recycle solvent can be lowered to 650 u00b0 850 u00b0 f the src from line 22 constitutes the feedstock for the subsequent operations in the production of the carbonaceous fraction the first step in the processing of the src involves hydrotreating the src in hydrotreating zone 24 hydrotreating is carried out to reduce the hetero atom content and to crack some of the non distillables i e those having a boiling point over 850 u00b0 f especially those over 1000 u00b0 f including the preasphaltenes the hydrotreating is carried out at temperatures of from 680 u00b0 950 u00b0 f at pressures of 1 000 6 000 psig and.