Deasphalting

When producing deasphalted oil (DAO) for hydroprocessing and catalytic cracking, the deasphalting process naturally creates heavy asphaltene buildup.

MOGAS' C-Series full-ported valve design offers 100 percent reliability in all asphaltene and DAO applications. That’s because MOGAS valves are equipped with a continuous, intermittent purge system that removes troublesome asphaltene build-up from seats and body cavities.

Operating Conditions:

High Temperatures: 500– 900° F
Coking Service

Temperature Cycling
Erosive Conditions

Asphaltene Formation

Deasphalting Process Flow Diagram

Feed
Steam
Make-up Solvent
Deasphalt Oil / Asphaltine Separator
Asphalt / Asphaltine Separator
Solvent / Deasphalt Oil Separator
ROSE® Exchanger
Deasphalt Oil / Deasphalt Oil Separator
Deasphalt Oil Flash Drum
Asphaltine Flash Drum
Solvent Recycle
Deasphalt Oil Stripper
Asphaltine Stripper
Stripper Solvent Condesor
Low Pressure Solvent Drum
Asphaltine Product
Deasphalt Oil Product

Heat Exchanger (not shown)
General Ball Valves (not shown)