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Dow Oil & Gas
Meeting Pipeline Specifications for Gas and NGLs Permian Midstream Congress 2015 Michael Landoll, PhD., Senior Engineer, Dow Oil, Gas & Mining
Dow Oil, Gas and Mining
• Drilling • Cementing • Stimulation
• Phase separation • Asset integrity • Flow assurance
• Gas injection • Chemical flooding • Thermal recovery
applications
• Offshore flow assurance
• Gas recompression
• Gas dehydration • Gas compressor
engines • Gas pipeline line
heaters
• Onshore and offshore gas processing
• LNG • Gasification • Acid gas
enrichment/sulfur plants
• Ammonia synthesis
• Acid gas removal • LPG treating • Isomerization and
reformer regeneration
• Heat transfer
Our brands: • EMBARK™ • CELLOSIZE™ • ANTISOL™ • POLYOX™
• DEMTROL™ • ROMAX™ • ACCENT™ • AQUCAR™
ELEVATE™ ROMAX™ DOW FILMTEC™ DOW IntegraPac™
• NEPTUNE™ • HYPERLAST™ • NORKOOL™ • DESITHERM™
• UCARSOL™ • SELEXOL™ • NORKOOL™
DESITHERM™ • DOWTHERM™ • SYLTHERM† • SulFerox®
• UCARSORB™
• AMINE MANAGEMENTSM Program
• UCARSOL™ • SELEXOL™ • UCARSEP™ • ISOFORM™
Agenda
• Acid Gas Removal Technologies • Recovery of NGLs from Natural Gas Streams
• CO2 and H2S Removal from NGL Streams
• Removal of Acid Gas and Organic Sulfur • Amine H2S Removal at High Ambient Temperatures
• Corrosion and Scaling in Dehydration Units
• Hot Oil Selection
Acid Gas Removal Technologies
Recovery of Hydrocarbons from Gas Streams UCARSORB™ NGL Adsorbents
• Natural gas streams often contain varying levels of NGLs, which can hold significant value for operators
• New technology developed using polymeric beads with high surface area to adsorb NGL compounds
• Looks similar to a zeolite bed but opposite principle – not size exclusion (picking up small molecules) but collects large hydrocarbons, allowing smaller compounds to slip through the bed
• Installing first plants on: • Flare Gas NGL recovery • Engine Gas NGL exclusion • Pipeline Gas NGL concentration
• Low pressure drop (<5 psig)
CO2 Removal from NGL Products UCARSOL™ LL Specialty Solvents
• The rising value of NGLs has shifted industry focus toward development of heavy natural gas plays.
Removal of Acid Gas and Organic Sulfur
Removal of Acid Gas and Organic Sulfur Hybrid Solvents
Relative solubilities of methyl mercaptan at 104 F and 4.6 psi partial pressure.
Relative solubilities of propane at 104 F and 26.7 psi partial pressure.
• Hybrid solvents: partially chemical solvent nature, partially physical solvent nature
• Hybrid solvents bring advantages over Amine solvents and Physical solvents
• CO2 and H2S removal + Mercaptan removal • Lower energy than Amine solvents
Actual Plant Data Comparison
UCARSOL™ HYBRID 701 ABSORBER
Component Actual Plant (molar)
CH4 82%
C2H6 5.2%
C3H8 2.1%
CO2 5.6%
H2S 3.9%
CH4S 121 ppm
Component Actual Plant (molar)
Simulated (molar)
CH4 87% 88%
C2H6 5.6% 5.6 %
C3H8 2.1% 2.2 %
CO2 2.6% 2.6%
H2S 8.5 ppm 8.4 ppm
CH4S 13 ppm 19 ppm
Flow rate (kmol/h)
4256 4262
Feed Gas
Treated Gas
Simulator reproduces Plant Data
UCARSOL™ HYBRID 701 REGENERATOR
Component Actual Plant (molar)
Simulated (molar)
CH4 Flow rate (kmol/h)
2.0 1.9
CO2 Flow rate (kmol/h)
113 117
H2S Flow rate (kmol/h)
172 174 Variable Actual Plant Simulated
Reboiler Duty (GJ/h)
51±5 47
Condenser Temperature (deg C)
54.7 54.7
Reflux Flow (m3/h)
4.27±0.28 4.58
Simulator reproduces Plant Data
Actual Plant Data Comparison
West Texas is Hot and Dry!
• >130˚F lean amine temp • Avoids corrosion issues caused
by primary and secondary amines
• Formulated blends • Tailored to a customer’s unique
requirements
• New fill or online conversion
• For geographies and designs where ambient temperature prevents low H2S treat and cooling water is not available.
• UCARSOL™ HT is designed for deeper H2S treat in high temperature environments
TEG removes water from gas, but when pH is low it causes corrosion.
DESITHERM™ Formulated TEG Dessicant Significantly Better pH Stability vs TEG
Hot Oils Selection - Synthetics
• Much higher stability and longer life vs. Mineral oils. • Ideal for offshore and remote locations.
DOWTHERMTM/SYLTHERM † Fluids
† Trademark of Dow Corning Corporation
< http://www.dow.com/heattrans/fluidfile/fluidfile.htm>
Dow Oil, Gas and Mining
• Drilling • Cementing • Stimulation
• Phase separation • Asset integrity • Flow assurance
• Gas injection • Chemical flooding • Thermal recovery
applications
• Offshore flow assurance
• Gas recompression
• Gas dehydration • Gas compressor
engines • Gas pipeline line
heaters
• Onshore and offshore gas processing
• LNG • Gasification • Acid gas
enrichment/sulfur plants
• Ammonia synthesis
• Acid gas removal • LPG treating • Isomerization and
reformer regeneration
• Heat transfer
Our brands: • EMBARK™ • CELLOSIZE™ • ANTISOL™ • POLYOX™
• DEMTROL™ • ROMAX™ • ACCENT™ • AQUCAR™
ELEVATE™ ROMAX™ DOW FILMTEC™ DOW IntegraPac™
• NEPTUNE™ • HYPERLAST™ • NORKOOL™ • DESITHERM™
• UCARSOL™ • SELEXOL™ • NORKOOL™
DESITHERM™ • DOWTHERM™ • SYLTHERM† • SulFerox®
• UCARSORB™
• AMINE MANAGEMENTSM Program
• UCARSOL™ • SELEXOL™ • UCARSEP™ • ISOFORM™
Thank You
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