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Manufacturing Process
S-OIL Lube Base Stock Manufacturing Process

·Refined from petroleum crude oil.
·Synthesized from relatively pure compounds with properties that are suitable for lubricants.

Group I Base Oil Process

·Vacuum Distillation Process      ·Purification Process      ·Dewaxing Process     ·Hydrofinishing

S-OIL Group II and III Lube Base Stock Manufacturing Process Diagram
S-OIL Group III aramcoULTRA Process

 

VDU: vacuum distillation unit VGO: vacuum gas oil HYC: hydrocracking
WAX ISOM: wax isomerization HDF: hydrofinishing SDA: solvent deasphalting
DAO: deasphalted oil HDT: hydrotreating MEK DWX: MEK dewaxing
CAT DWX: catalytic dewaxing    

 

What happens during each process

Item

VGO

After hydro cracking

After hydro isomerization

After hydro finishing

Saturates

40-60%

＜10%

＜2%

＜1%

Sulfur

2-3%

＜10ppm

＜5ppm

＜1ppm

VI

70-85

＞130

＞120

120 - 130

Pour point Degrees

+25 - +50

+30 - +40

＜-15.0

-22.5 - -15

Color

L3.0 - L4.0

L0.5 - L2.0

+20

+30

  
  S-OIL Group II Base Oil Process    

Aramco Prima series base oil utilizes ExxonMobil’s MSDW TM catalytic dewaxing and hydrofinishing process effectively combined with Gulf’s hydrotreating process .

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