Separation of solids containing residues from liquid fractions o

Details Separation of solids containing residues from liquid fractions o Separation of solids containing residues from liquid fractions o

1977-06-01

1978-10-31

Gantz, Delbert E.

Mineral oils: processes and products

Products and compositions

Lubricating oils

208 9, 208102, 208364, 208366, C10G 108, C10G 3704, B01D 306

Patent

active

041233492

ABSTRACT:
A process for the separation of solids containing residues from a liquid fraction containing higher boiling fractions produced in a coal hydrogenation process at elevated temperatures and pressures. The separation process involves two expansion steps, one step in an expansion engine and a subsequent expansion-evaporation step in a pressure release means and a separator chamber, whereby the higher boiling fraction is evaporated and separated from the residue fraction. The separation process in the chamber can be facilitated by creating vacuum conditions therein, or by introducing a foreign gas, preferably heat exchange with the removed hot residue fraction, to thereby reduce the partial pressure of the evaporated higher boiling fraction. The foreign gases can be steam or/and gases obtained from the hydrogenation of the coal.

REFERENCES:
patent: 3844928 (1974-10-01), Geymer
patent: 4019975 (1977-04-01), Urquhart

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