Offshore Kurz Solar

Packaging Turbomachines for Offshore Applications Rainer Kurz Solar Turbines Incorporated, Klaus Brun Southwest Research Institute, Marybeth Nored Apache Corp

Gas Electric Partnership 2013

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Scope • • • • • •

Turbomachinery in Offshore Applications Certification Movement and Deflection Air Fuel Weight

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Offshore Applications Mechanical Drive

Generator Set

Multi Body Compressor Set © 2013 Solar Turbines Incorporated

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Gas Turbine Installation on an FPSO • Power Generation • Mechanical Drive

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Certification

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Certification and Compliance

Classification of Floating Offshore Installations, Fixed Location – FPSO / FPU, TLP, SPAR, CTs Steel Ship’s Rules for Building and Classing – FPSOs Facilities Offshore Guide –Fixed Leg Platforms

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Hazardous Locations

Risk

Not Classified

Division 1 Zone 1

Division 2 Zone 2

1 Hr./Yr.

10 Hrs./Yr.

1000 Hrs./Yr.

Zone 0

Duration of time Gas is Present © 2013 Solar Turbines Incorporated

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Movements and Deflection

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Movements

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Fluid Management

Evaluate L/O Tanks for Pitch & Roll using CFD

• Bearing Scavenge Systems • Package Scavenging • Separate Lube Oil Tank • Lube Oil Tank Baffles

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SIDE VIEW © 2013 Solar Turbines Incorporated

TOP VIEW

Moderate Package Scavenge System

PACKAGE SCAVENGE OIL TANK

Lube Oil Tank and Drain © 2013 Solar Turbines Incorporated

Vent System

Lube Oil Supply System

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Installation Orientation OIL CAN’T DRAIN TO TANK

ROLL ANGLE

ROLL ANGLE

OIL CAN DRAIN TO TANK

OIL CAN DRAIN TO TANK

Perpendicular Orientation

14 Parallel Orientation © 2013 Solar Turbines Incorporated

Deck Deflections

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Base Plate Mounting

Anti-Vibration Mount (AVM) Method

STAINLESS STEEL VIBRATION ISOLATORS © 2013 Solar Turbines Incorporated

PACKAGE MOUNTING SURFACE

Gimbal Mount Method

SPHERICAL BEARING DECK MOUNTING SURFACE

16 TTS105-001

3-Point Mount Base Plates

Single-Piece Base Plate

Two-Piece Base Plate

Two-Piece Base Plate with Sub-Base 17 © 2013 Solar Turbines Incorporated

TTS1 0

Air Filtration

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Environment: The issues

•

Environmental conditions can lead to fouling and corrosion

– – – –

Viscous hydrocarbons from flares, exhausts cement dust, shot blast, iron oxides salt crystals cyclic wet/dry conditions etc.

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Air Filters Trade-Off

Effectiveness

e iz ss o t,S L os re C su es Pr

© 2013 Solar Turbines Incorporated

T G

M

e c n a n e t n i a 20

~ 5 to 10 microns

Behavior of Airborne Salt with Changes in Relative Humidity

DROPLET DIAMETER RELATIONSHIP

SALT DROPLET SIZE RELATION WITH HUMIDITY

0

10

20

30

Low

Solids

40

50

60

Transitional

Both

70

80

90 100

~ 0.5 to 2 microns

High

Liquids

Filter has to deal with salt dissolved in water and salt particulates both in the airstream and in its surface! © 2013 Solar Turbines Incorporated

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Fractional efficiency for filter elements

1ST-STAGE VANE SEPARATOR

DRAINAGE SYSTEM

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Offshore Air Inlet Systems

HIGH VELOCITY INLET SYSTEM

© 2010 Solar Turbines Incorporated

© 2013 Solar Turbines Incorporated

MEDIUM VELOCITY INLET SYSTEM 24

Fuel

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Hot Corrosion • A form of accelerated oxidation • 1100 to 1750F temperature range: two types

– Type I, High Temperature (1350 – 1750F ) – Type II, Low Temperature (1020 – 1350F ) • Na2SO4 commonly responsible • Sodium intake is critical • Potassium, vanadium, and lead also contribute to hot corrosion

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Dealing with Contaminants in Gas Fuels

• Scale, Rust, Slag, Dirt – Clean and Passivate Piping – Use Proper Filtration • Condensibles, Oils, Water – Use Coalescing Filtration – Fuel Heating – Fuel Analysis (up to C14!)

Fuel Filters and Coalescers

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Weight

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Offshore Concepts Gas Turbines and Electric Drives

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Installed Weights and Footprints Driver Systems for 10 MW Compressors

All Gas Turbine

Electric Drive – Variable Frequency

Electric Drive – Variable-Speed Gear

Electric Drive – Constant Speed

Driver System Weight

55,000 kg

60,000 kg

60,000 kg

40,000 kg

Driver System Footprint

30 m2

41 m2

32 m2

26 m2

System Option1

• Driver System Weight and Footprint Impact Cost • Gas Turbine and Variable Frequency Electric Drive Systems Comparable – Provided Full Electrical Equipment Scope Included in Analysis • Constant Speed Option Compact, But Limits Operability, Increases Size of Power Generation 1Driven

compressors not included (same for all scenarios). Weight for Generators (EMD Solutions) not included

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Questions?

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