Re-refined lubricating oil
Used lube oil brought back to a straw-coloured base oil by wiped-film distillation.
- Viscosity
- about SAE 40 at ambient
- Distillation
- 310 to 320 °C at 1 mm Hg
- Finish
- Bleached with active clay
- Colour
- 2 to 4 by lot
Process conditions, wiped-film reclamation
| Test | Method | Limit |
|---|---|---|
| Settling | Settling vessel | Solids drop out |
| Filtration | Centrifuge and oil purifier | Sludge, water and organics removed |
| Dehydration | Distillation column | Water off at 120 °C |
| Light cut | Distillation column, 710 mm Hg vacuum | 180 to 220 °C |
| Thin-film distillation | Induction-heated molecular still, 1 mm Hg | 310 to 320 °C |
| Viscosity of distillate | At ambient | About SAE 40 |
| Bleaching | Active clay | High-colour base oil |
| Residue | Incinerator | Complete combustion |
- The unit runs two columns: one for dehydration and light cut, one thin-film evaporator.
Limits are the specification the product is tested against.
Where it comes from
Used lubricating oil, largely from the engine rooms of ships broken at Alang, taken through the six-step wiped-film process at Mamsa: settling, centrifuge and purifier, dehydration at 120 °C, light-cut distillation, thin-film molecular distillation under high vacuum, and clay bleaching.
Used for
Base stock for blenders, and for any buyer who needs a clean lubricating oil at a used-oil price.
Despatch
By tanker or drums from Mamsa.
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