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Gas Turbine SGT-500
Power Generation: ISO 19.10 MW(e) / Mechanical Drive: 19.52 MW
The three shaft industrial gas turbine SGT-500 is a light weight, high efficiency, heavy duty machine. It operates reliably in the 15-20 MW power range and can handle a variety of fuels. For both, industrial power generation and mechanical drive, the SGT-500 is a proven unit. The SGT-500 is available as a factory assembled package and provides an excellent power-to-weight ratio. Moreover, the SGT-500 has successfully undergone a comprehensive test program on heavy fuel oil for marine applications.
Fields of Application
• Drive solution for marine applications with heavy fuel oil (HFO) IF180
• Drive solution for centrifugal compressors used in the oil and gas industry
• Simple cycle power generation
• Combined cycle power generation
• Combined heat and power (CHP)
• Power generation for the oil and gas industry
- Onshore power generator for oil field service, refinery application etc.
- Offshore platforms and FPSO vessels
• Reliable, compact, lightweight solution for power generation applications
• High availability, low environmental impact
• Burns heavy fuel oils (HFO), crude oils, residual oils from refining processes, Medium Heavy Crude Oils and Extra Heavy Crude Oils with API gravities as low as 12° or 13° API
Specifications
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Power output |
19.10 MW(e) |
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Fuel |
Natural gas / liquid fuel / dual fuel and other fuels capability on request |
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Frequency |
50/60 Hz |
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Electrical efficiency |
33.8% |
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Heat rate |
10,664 kJ/kWh (10,107 Btu/kWh) |
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Turbine speed |
3,600 rpm |
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Compressor pressure ratio |
13:1 |
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Exhaust gas flow / Temperature |
97.9 kg/s, 369°C (215.9 lb/s, 697°F) |
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NOx Emissions (with DLE, corrected to 15% O2 dry) |
‘≤ 42 ppmV |
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Shaft output |
19.52 MW (26,177bhp) |
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Fuel |
Natural gas / liquid fuel / dual fuel and other fuels capability on request |
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Efficiency |
34.5% |
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Heat rate |
10,432 kJ/kWh (7,373 Btu/bhph) |
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Turbine speed |
3,450 rpm |
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Compressor pressure ratio |
13:1 |
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Exhaust gas flow / Temperature |
97.9 kg/s, 369°C (215.9 lb/s, 697°F) |
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NOx Emissions (with DLE, corrected to 15% O2 dry) |
‘≤ 42 ppmV |
Maintainability and Availability of the SGT-500
· 55,000 hours between overhauls
· 10,000 hours between inspections
· less than 50 days scheduled downtime in 18 years
· availability in excess of 97%
Crude Oil Capability
· Accepts liquid fuels with viscosities up to 20cSt
· Fuels pre-heated to as high as 150°C
· Possible usage of fuels with viscosities of 750cSt at 50° or higher due to pressurized fuel system
Benefits
· SGT-500 can operate on heavy fuel oil (ideal for Oil & Gas applications)
· Proven outstanding reliability and availability, onshore, offshore and FPSO
· Cyclic, peaking or continuous service
· Outstanding fuel flexibility, fuel changeover on load
· High efficiency, low degradation
· DLE systems for gas and liquid fuel
· State-of-the-art automation and control system
· Casings with blade containment capability and thermal insulation without requirement for forced ventilation
· Complete delivery from OEM - core engine and auxiliary equipment tested in workshop before delivery
· Long intervals between overhauls, low maintenance cost
· Site maintenance or gas generator replacement
· Combustor and hot section accessibility
· E-Service Applications (e.g. Operating Statistics, Upgrades & Enhancements)
· Increases energy efficiency of oilfield operations
· Reduces global CO2 footprint of Heavy Oil production
· Bi-Fueling (Mixed Fuel Operation) reduces the need to flare associated gas
· Core engine exchange concept (in less than 48 hours)
· Longer component life due to lower firing temperatures
Design Concept
The modular, compact design of the SGT-500 facilitates easy on-site service - complete modules can be swiftly exchanged. The SGT-500 contains a twin-shaft gas generator: The low pressure axis contains a 10 stage low pressure compressor and a 2 stage low pressure turbine. The high pressure axis contains an 8 stage high pressure compressor and a 1 stage high pressure turbine. The three-stage power turbine speed is 3,600 rpm for power generation and 3,450 rpm for mechanical drive. In order to increase efficiency, a blade tip clearance adjuster is connected between the power turbine stator and rotor. The gas turbine is available with a conventional or Dry Low Emissions (DLE) combustion system. Both systems provide dual fuel capability, the DLE system also providing extremely low NOX levels.
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