METHOD FOR OBTAINING EVAPORATIVE OILS FROM THE RESIDUE OF THE HYDROGENATION OF HEAVY OR FUEL, BITUMEN, TEAR AND DERGL.

摘要

The residues from the hydrogenation of heavy oils or very heavy oils, bitumen, tar, oils from oil shale or tar sand and the like, are subjected to a vacuum distillation at pressures from 0.01 to 0.6 bar. For an improved process engineering procedure in the vacuum distillation of such hydrogenation residues, these are subjected to a distillation under reduced pressure in a single- or multi-shaft screw machine. IMAGE