Gas Processing Operations
Processing Plants Prepared by: DSc PhD Dževad Hadžihafizović (DEng)
Sarajevo 2024
Gas Processing Operations
Natural Gas Dehydration
•INPUT:Process Multiple Crude Compositions At
Minimum Cost
•OUTPUT: Produce Slate Of Products That Provide The
Most Profit For Current Market Conditions
•CONVERSION: Utilize Processes That Upgrade Value Of
Petroleum Components
•FULL CONVERSION REFINERY
–Change Less Valuable Fractions Into Higher Value
Transportation Fuels
–Process Heavier, Cheaper Crude Oil
–Convert ~90% Of Crude Oil Into Fuels And Products
Ford, Bacon & Davis, LLC 3
Ford, Bacon & Davis, LLC 6
STABILIZER
ATMOSPHERIC
TO WER
VACUUM
TO WER
CRUDE DISTILLATION
CRUDE
LPG & GAS
SR GASOLINE
NAPHTHA
MIDDLE DISTILLATES
HVY ATMOS
GAS OIL
VACUUM
GAS OIL
(LVG O/
HVGO)
DELAYED
COKER
COKE
T
R
E
A
T
I
N
G
A
N
D
B
L
E
N
D
I
N
G
REFINERY FUEL GAS
LIQUID PETROLEUM GAS (LPG)
REGULAR GASOLINE
PREMIUM GASOLINE
CHEMICAL FEEDSTOCKS
JET FUEL / KEROSENE
DIESELS
HEAT ING OILS
LUBE OILS
GREASES
ASPHALTS
INDUSTRIAL FUELS
REFINERY FUEL OIL
FLUIDIZED
CATALYTIC
CRACKING
(FCCU)
LIGHT ENDS
UNIT
NAPHTHA
HYDRO
TREATING
REFORMING
REFORMATE
ISOMERIZATION
CONVERSION PRODUCT FINISHING
VACUUM TOWER BOTTOMS
SULFUR
RECOVERY SULFUR
RICH
AMINE
SOUR
W AT E R
LEAN
AMINE
SWEET WATER
HYDRO-
CRACKING
(HCU)
COKER GAS OIL
DISTILLATE
HYDRO
TREATING
DISTILLATES
ALKYLATION
ALKYLATES
COKER
NAPHTHA
COKER DISTILLATE
GAS OIL
HYDRO
TREATING
(GOHT)
HYDROCRACKATE
HCU DIESEL
C AT L IG HT EN DS
CAT
NAPHTHA
CAT LIGHT CYCLE OIL (LCO)
•Crude Oil Is A Complex Mixture Of
Hydrocarbons Generated By Nature
•Light Crudes Have Lower Boiling Point
Components With More Value As Products
•Sweet Crudes Have Lower Sulfur Concentrations
–Less Expensive Materials Of Construction
–Less Sulfur Handling Requirements
•Light, Sweet Crudes Are Becoming More Scarce
And More Expensive
Ford, Bacon & Davis, LLC 12
•Heavier Crudes Have Higher Boiling Point
Components With Less Value As Products
•Heavier Crudes Require More Refinery Process
Steps To Convert To Lower Boiling Point
Components Of Higher Value
•Sour Crudes Have Higher Sulfur Concentrations
–More Expensive Materials Of Construction
–More Sulfur Handling Requirements
•Heavy, Sour Crudes Are More Available And Less
Expensive Than Light, Sweet Crudes
Ford, Bacon & Davis, LLC 13
•Crude AssayIs Used To Define Specific Properties That
Impact Refining
•Crude Oil Properties Include:
–Boiling Point Curve
–API Gravity
–Sulfur Content
–Nitrogen Content
–Metals (Nickel/Vanadium)
–Conradson Carbon Residue (CCR)
–PONA Analysis
(Paraffins/Olefins/Naphthenes/Aromatics)
–Viscosity Curve
Ford, Bacon & Davis, LLC 14
•API Gravity Is A Measure Of Crude Oil Density
•Higher API Gravity = Lower Density
•Lower API Gravity = Higher Density
•Light Crudes Are Greater Than 40° API
•Medium Crudes Are 20° To 40° API
•Heavy Crudes Are Less Than 20° API
Ford, Bacon & Davis, LLC 16
Octane Sulfur RVP
Ford, Bacon & Davis, LLC 49
SR Naphtha Low High High
Alkylate
Very High None Low
Lt Hydrocrackate
Medium Very Low High
Hvy Hydrocrackate
Medium Very Low Low
Lt Cat Naphtha
High Medium Medium
Hvy Cat Naphtha
High High Low
Coker Naphtha
Medium Very High High
Wild Naphtha
Very Low Very High Very High
Ford, Bacon & Davis, LLC 50
LightEnds
Naphtha
Middle Distillates
Gas Oils
Residuals
Byproduct Recovery
Delayed
Coker
FCCU
Hydro-
cracker
Alkylation
Crude Unit Off Gas
Alky Propane/n-Butane
HCU LPG
FCC C3’s
SR Naphtha
Alkylate
Lt/Hvy Hydrocrackate
Lt/Hvy Cat Naphtha
Coker Naphtha
SR Kerosene
SR Diesel
HCU Diesel
Light Cycle Oil
Coker Distillate
Clarified Slurry Oil
Petroleum Coke
Naphtha
Hydrotreater
(NHT)
SR Naphtha
Coker Naphtha
Wild Naphtha
Hydrogen
Stabilizer
LPG
Naphtha
Splitter
Isomerization
(Penex)
Hydrogen Fuel Gas
Isomerate
Reformer
Proprietary Reformer Trademarks
Platformer (UOP) Rheniformer (Chevron) Powerformer (ExxonMobil)
Hydrogen
(Net Gas)
LPG
Reformate
Stabilize–Reduce RVP
Hydrotreat–Remove Sulfur and Olefins
Split – Separate Light And Heavy SR
Reform –Boost Heavy SR Octane
Isomerize – Boost Light SR Octane
SR/Coker/Wild
Ford, Bacon & Davis, LLC 51
LightEnds
Naphtha
Middle Distillates
Gas Oils
Residuals
Byproduct Recovery
Delayed
Coker
FCCU
Hydro-
cracker
Alkylation
Crude Unit Off Gas
Alky Propane/n-Butane
HCU LPG
FCC C3’s
SR Naphtha
Alkylate
Lt/Hvy Hydrocrackate
Lt/Hvy Cat Naphtha
Coker Naphtha
SR Kerosene
SR Diesel
HCU Diesel
Light Cycle Oil
Coker Distillate
Clarified Slurry Oil
Petroleum Coke
Naphtha
Hydrotreater
(NHT)
SR Naphtha
Coker Naphtha
Wild Naphtha
Hydrogen
Stabilizer
LPG
Naphtha
Splitter
Merox /
Merichem
Treater
Caustic Soda Light SR
Reformer
Proprietary Reformer Trademarks
Platformer (UOP) Rheniformer (Chevron) Powerformer (ExxonMobil)
Hydrogen
(Net Gas)
LPG
Reformate
Stabilize–Reduce RVP
Hydrotreat–Remove Sulfur and Olefins
Split – Separate Light And Heavy SR
Reform –Boost Heavy SR Octane
Isomerize – Boost Light SR Octane
SR/Coker/Wild
Ford, Bacon & Davis, LLC 52
LightEnds
Naphtha
Middle Distillates
Gas Oils
Residuals
Delayed
Coker
FCCU
Hydro-
cracker
Alkylation
Crude Unit Off Gas
Alky Propane/n-Butane
HCU LPG
FCC C3’s
SR Naphtha
Alkylate
Lt/Hvy Hydrocrackate
Lt/Hvy Cat Naphtha
Coker Naphtha
SR Kerosene
SR Diesel
HCU Diesel
Light Cycle Oil
Coker Distillate
Clarified Slurry Oil
Petroleum Coke
Naphtha
Hydrotreater
(NHT)
SR Naphtha
Coker Naphtha
Wild Naphtha
Hydrogen
Stabilizer
LPG
Naphtha
Splitter
Isomerization
(Penex)
Hydrogen Fuel Gas
Isomerate
Reformer
Hydrogen
(Net Gas)
LPG
Reformate
Lt Hydrocrackate
Guard
Bed
Hvy Hydrocrackate
Stabilize–Reduce RVP
Hydrotreat–Remove Sulfur and Olefins
Split – Separate Light And Heavy SR
Reform –Boost Heavy SR Octane
Isomerize – Boost Light SR Octane
SR/Coker/Wild
Ford, Bacon & Davis, LLC 53
LightEnds
Naphtha
Middle Distillates
Gas Oils
Residuals
Byproduct Recovery
Delayed
Coker
FCCU
Hydro-
cracker
Alkylation
Crude Unit Off Gas
Alky Propane/n-Butane
HCU LPG
FCC C3’s
SR Naphtha
Alkylate
Lt/Hvy Hydrocrackate
Lt/Hvy Cat Naphtha
Coker Naphtha
SR Kerosene
SR Diesel
HCU Diesel
Light Cycle Oil
Coker Distillate
Clarified Slurry Oil
Petroleum Coke
SHU
Reactor
Lt Cat Naphtha
Hvy Cat Naphtha
Lt Coker Naphtha
Hydrogen
Naphtha Splitter
Fuel Gas
Lt LS Gasoline
HDS
Reactor
Hydrogen
Recycle Compressor
Stabilizer
Fuel Gas
Hvy LS Gasoline
Remove Diolefins (Gum-Formers)
Remove Mercaptans (Sulfur)
Split to Maximize Light Cat Naphtha Octane
Hydrotreat But Minimize Olefin Saturation
Stabilize To Decrease Gasoline RVP
Lt Cat/Hvy Cat/Lt Coker
Ford, Bacon & Davis, LLC 54
LightEnds
Naphtha
Middle Distillates
Gas Oils
Residuals
Byproduct Recovery
Delayed
Coker
FCCU
Hydro-
cracker
Alkylation
Crude Unit Off Gas
Alky Propane/n-Butane
HCU LPG
FCC C3’s
SR Naphtha
Alkylate
Lt/HvyHydrocrackate
Lt/Hvy Cat Naphtha
Coker Naphtha
SR Kerosene
SR Diesel
HCU Diesel
Light Cycle Oil
Coker Distillate
Clarified Slurry Oil
Petroleum Coke
HDS
Reactors
SR Kerosene
SR Diesel
Coker Distillate
Lt Cycle Oil
Hydrogen
Recycle Compressor
Fractionation
Fuel Gas
Wild Naphtha
Kerosene
ULSD
Distillate Hydrotreater (DHT)
Ford, Bacon & Davis, LLC 55
LightEnds
Naphtha
Middle Distillates
Gas Oils
Residuals
Byproduct Recovery
Delayed
Coker
FCCU
Hydro-
cracker
Alkylation
Crude Unit Off Gas
Alky Propane/n-Butane
HCU LPG
FCC C3’s
SR Naphtha
Alkylate
Lt/HvyHydrocrackate
Lt/Hvy Cat Naphtha
Coker Naphtha
SR Kerosene
SR Diesel
HCU Diesel
Light Cycle Oil
Coker Distillate
Clarified Slurry Oil
Petroleum Coke
HDS/HDN
Reactors
AGO
LVGO
HVGO
Coker Gas Oil
Hydrogen
Recycle Compressor
Fractionation
Fuel Gas
Wild Naphtha
FCC Feed
Gas Oil Hydrotreater (GOHT)
Hydrotreating Gas Oil Before FCCU Avoids Hydrotreating Separate FCCU Products
Ford, Bacon & Davis, LLC 56
Ford, Bacon & Davis, LLC 58
Amine
Regeneration
Unit
Rich Amine
Lean Amine
Acid Gas
Sour Water
Stripper
Sour Water
Acid Gas
SRU (Claus) Unit
Air
Molten Sulfur
Tail Gas
Treatment
(Scot) Unit
Thermal
Oxidizer
Vent
Ford, Bacon & Davis, LLC 61
REACTION
PREHEATING
TAIL
GAS
FROM
SRU
PROCESS
GAS
QUENCH
COOLING
H2S
ABSORPTION
TREATED
TAIL
GAS
TO
ATMOS
REACTION
(SO2
CONVERSION
TO H2S)
SOLVENT
REGENERATION
ACID
GAS
TO
SRU
LEAN
SOLVENT
RICH
SOLVENT
INCINERATION/
WASTE
HEAT
RECOVERY
BFW
HP
STEAM
COND
HP
STEAM
•Petroleum Refinery Converts Crude Oil To
Fuels and Chemical Feedstocks
•Molecules In Crude Oil Are Converted To High
Value Products Through Refinery Conversion
And Product Finishing Steps
•Removing Sulfur From Refinery Products Is
Critical in Meeting Environmental
Requirements (Tier 3 = 10 ppmw)
Ford, Bacon & Davis, LLC 62
•Handbook Of Petroleum Refining Processes,
Robert A. Meyers, ed.
•Petroleum Refining Technology and
Economics, James H. Gary, et al.
Ford, Bacon & Davis, LLC 2