The presentation was made for Industrial training at Petromax Refinery Limited. This was part of the undergraduate course work at BUET.

1. Industrial Training at
Petromax Refinery Limited
| Presented by:
Pranto Paul (1402002)
Galib Hassan Khan (1402010)
ASM Nasim (1402015)
Tarikul Islam (1402019)
Arkabur Rahman Arnob (1402020)
Ahosan Habib Rakib (1402047)

2. Company Type: Privately Owned
Parent Company: Youth Group
Employees: around 250
Process Licensor: AXENS (France)
General Contractor: PT Istana Karang Laut, Indonesia
Local Contractor: SIGMA
Location:
Mongla Industrial Area, Khulna,
Bangladesh
(On the bank of the river Poshur)
Overview
Image Credit: Google Earth

3. Normal capacity: 2500 BPSD
Condensate Fractionation Unit (CFU)
Catalytic Reformation Unit (CRU)
Naphtha Hydrotreating (NHT)
Running Time: 24 hours
Raw Materials: Natural Gas Condensate
Main Products:
• Light Naphtha
• Premium grade Gasoline (Octane)
• Mineral Turpentine (MTT)
• Superior Kerosene Oil (SKO)
• Diesel
Major Process Units:
Process Overview

4. Condensate Fractionation Unit (CFU)
A Distillation column with 47 Equilibrium trays
Feed: Natural Gas Condensate
Output:
• Light Naphtha (Overhead)
• Naphtha (Overhead)
• Mineral Turpentine (Middle section)
• Superior Kerosene Oil (Middle Section)
• High Speed Diesel (Bottom)
• Preheating
• Re-boiling
• Condensation
• Stripping
Processes Involved:
Goes to NHT and
CRU for processing

5. Condensate Fractionation Unit (CFU)
ImageCredit:PetromaxRefineryLimited

6. Naphtha Hydrotreating (NHT)
Capacity: 6350 kg/hr
Feed: Naphtha from CFU
Purpose: To remove impurities from
Naphtha to make it suitable for CRU
Impurities Removed:
• Sulfur : Mercaptan, Sulfide (max 0.5 ppm)
• Water (max 4 ppm)
• Nitrogen (max 0.5 ppm)
• Oxygen
• Metallic compound : As, Fe, Pb, Cu etc. (max 5 ppb)
Reactions Involved:
• Hydrorefining (desulfurization)
• Hydrogenation
Catalysts Used:
• Bimetallic catalyst
• Cobalt-Molybdenum
• Used for the desulfurization and
denitrification
Distillation range: ASTM 80-180˚C

7. Naphtha Hydrotreating (NHT)
ImageCredit:PetromaxRefineryLimited

8. Catalytic Reformation Unit (CRU)
Purpose:
• To convert low octane naphtha to high
octane reformate product
• To produce high purity H2 for Hydro-treating
unit. Catalysts Used:
• Bimetallic catalyst
• Platinum & Rhenium.
• Total Catalyst of 3 Reactor: 6401 kg
Reactions Involved:
• Dehydrogenation
• Dehydrocyclisation
• Isomarization
• Cracking
• Hydrogenolysis
• Coking
Desired
Adverse
Feed: Naphtha from NHT
Output:
High Octane Blending Component (HOBC)

9. Catalytic Reformation Unit (CRU)
ImageCredit:PetromaxRefineryLimited

10. CFU
(Distillation)
NHT
(Impurity
removal)
CRU
(Increase of
Octane
number)
Tank Tank
Naphtha
MTT, SKO, HSD in
separate lines
NGC
feed
High Octane
naphtha
Process in short

11. Pre-treatment
Media-filtration
Softening by base
exchange
Demineralization
by Reverse
Osmosis
Polishing by ion-
exchange process
Water Treatment Plant
Water in Surrounding area is very salty
Controlling Parameters
✓ pH
✓ M-alkalinity
✓ Ca-Hardness
✓ Total Hardness
✓ Total Dissolved Solid
(TDS)
✓ Temperature

12. ➢ Multi-grade Filter (MGF)
➢ Activated Carbon Filter (ACF)
➢ Softener
➢ Reverse Osmosis
➢ De-gasifier
➢ Ion Exchanger
Cation exchanger Anion exchanger
Water Treatment Plant units
Image Credit: Petromax Refinery Limited

13. Safety and Firefighting
Image Credit: Petromax Refinery Limited
Highly Flammable Substance: Oil

14. Sensor Cable
Signal
Tank Fire
Detection Panel
SIS/F&G
Panel
Foam Pump(s)
Controller
Deluge Valve for
Specific Tank
Sounder and Beacon
for Specific Zone
Auto Start
Jockey pump,
Elec. Fire Pump
& Diesel fire
pump System
Water
Pressure
Drop
Pump types for fire fighting
• Jockey pump :
Cut in: 142 psi
Cut out: 150 psi
• Electric Fire pump:
Cut in: 136 psi
Cut out: 148 psi
• Diesel Fire Pump:
Cut in: 120 psi
Cut out: 144 psi
Safety and Firefighting

15. The whole plant area is divided into 6 fire zones
Safety and Firefighting
Image Credit: Petromax Refinery Limited

16. • All the Toxic and hazardous gases are
burned in presence of Oxygen
• A burning Flare signals that the plant is
running
Flare

17. Thanks
for
your time