Desalting Part 2 May 2009
Desalting Part 2 May 2009
Desalting Part 2 May 2009
PROBLEM DEFINITION
ANALYSIS
RECTIFICATION
DESALTER TROUBLESHOOTING
Problem Definition
Operational Considerations
RESOLV™ Applications
(Reverse Emulsion Breaker)
Inversion of Resolv Dispersion Polymer
Process Water
Optimum Desalting/Dehydration
BENEFITS
Optimum
Solids Removal
Collapses Rag
Background
• XOM, Fawley
35
28 28.5
30 25
24
25 22
$ / MB -- 20
20 17.5 17
Desalting 14.5 14 13.8
15 9.6 9.5 9.7
Chemical 7.1 7
9
10 6 5.5 6
5 0.5 0.6 0.2 0.2 0.2 0.5 0.2 0.1 0.4 0.2
0
Total Dispersion
BPG-033
CRITICAL VOLTAGE
Current
_ _ _ _ _ _ _ _
+ + + + + + + +
Critical Electric Field
+ + + + + + + +
_ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _
Voltage
Early CEF Results
1
12.5 ppm EC2472A
0.9 12.5 ppm EC2452A
12.5 ppm EC2425A
0.8 12.5 ppm EC2045A
12.5 ppm VX8324
0.7 12.5 ppm EC2498A
Blank
0.6
0.5
0.4
0.3
0.2
0.1
0
60 65 70 75 80 85 90 95 100
8 ml Maya Crude Oil: 2 ml Brine (1 % NaCl)
Voltage (V)
Emulsified 15000 rpm for 3 minutes
Crude Oil Data Base
Neostar Capabilities
• OPERATOR TRAINING
TANKAGE DEHYDRATION
APPLICATION
BPG-058
• CHEMICAL
CS-183
• TEMPERATURE CS-188
• SETTLING TIME
TANKAGE DEHYDRATION
TREATMENT GUIDELINES
ASPHALTIC / NAPHTHENIC CRUDES
API GRAVITY DOSAGE TEMP TEMP SETTLING
(PPM) (oC) (oF) TIME (HRS)
30+ 4.5 18 - 27 65 - 80 24
TREATMENT GUIDELINES
PARAFFINIC CRUDES
Treated Crude
PORTAFEED
Free Water
PIPELINE
Treated Crude
PORTAFEED
Free Water
TANKAGE DEHYDRATION
Tank Bottoms Method
Untreated Crude
Unresolved Emulsion
Recovered Oil
PORTAFEED
Free Water
TANKAGE DEHYDRATION
BENEFITS
• IMPROVE PROFITABILITY
• ACHIEVE FEEDSTOCK REQUIREMENTS
• ENHANCE DESALTING PROCESS
• MINIMIZE CRUDE SYSTEM UPSETS
• SMOOTHER DESALTER OPERATION
• CONSERVE FUEL COST
• PROTECT DOWNSTREAM PROCESSES
• SHARPER OIL/WATER INTERFACE
• REDUCE POLLUTION CONTROL COSTS
WASTE OIL TREATMENT
HEAVY
ENDS PRODUCT
• Batch treatment
• Transfer treatment
• Continuous treatment
WASTE OIL TREATMENT
BATCH TREATMENT APPLICATION
CHEMICAL
WASTE OIL TREATMENT
BATCH TREATMENT APPLICATION
• Heat enhances
emulsion resolution
• Ensure only emulsion is
removed from tank HYDROCARBON
EMULSION
WATER
CHEMICAL
WASTE OIL TREATMENT
TRANSFER TREATMENT APPLICATION
• Method involves moving
SLOP TANK emulsion from one tank to another
• Ensure only emulsified
material is transferred
EMULSION
RESOLVING TANK
CHEMICAL
WASTE OIL TREATMENT
TRANSFER TREATMENT APPLICATION
• Provides sufficient mixing
and uses less chemical
SLOP TANK • The emulsion passes through
the pump only once
RESOLVING TANK
HYDROCARBON
EMULSION
CHEMICAL
WATER
WASTE OIL TREATMENT
CONTINUOUS TREATMENT APPLICATION
• Waste streams are continuously
pumped to a resolving tank
API • Requires close monitoring
SEPARATOR
RESOLVING TANK
HYDROCARBON
EMULSION
CHEMICAL
WATER
CS-154
WASTE OIL TREATMENT
• Minimize waste
• Reduce pollution control costs
• Reduce disposal costs
• Reduce operating costs
• Restore storage tank capacity