Siemens Gas Turbine SGT-700
Power output: ISO 29.06 MW(e) / Mechanical Drive: 30.10 MWSpecially designed to produce more power, the SGT-700 is an uprated version of the proven SGT-600 industrial gas turbine. The SGT-700 boasts a simple cycle shaft output of 29.1 MW and a thermal efficiency of 36 % at base load on gas. This two-shaft machine can be used for both power generation and mechanical drive. The unit offers long life, easy on-site maintenance and a wide fuel range capability - from liquid fuel to natural gas. Its compactness makes it suitable for offshore installations as well as for retrofitting in existing installations.
FIELDS of APPLICATION:-
> Drive solution for compressors.
>Simple cycle power generation.
> Combined cycle power generation.
> Ideal for combined heat and power(CHP), because of its excellent exhaust heat data.
> Power generation for the oil and gas industry:
--> Onshore power generator for oil field service, refinery application etc.
--> Offshore platforms and FPSO vessels.
DESIGN CONCEPT:-
SGT-700 for Power Generation and Mechanical Drive: up to 30.10 MW
The SGT-700 is a twin shaft machine with eleven compressor stages. The first two stages have variable guide vanes. To optimize power output, the power turbine is equipped with advanced profile blades that improve gas flow. Direct drive of pipeline or process compressor is provided for by the free high-speed power turbine, eliminating the need for a gearbox. Its overall design ensures easy service access to the combustor and burners. The combustion chamber is of annular type and includes 18 burners. The inner surface of the combustor has a thermal barrier coating that reduces the level of heat transfer and extends the lifetime. The uprated machine has full Dry Low Emissions (DLE) capability, providing low NOx levels. It can operate on both gas and liquid fuels with on-line switchover between fuels.
POWER GENERATION PACKAGE:-
The SGT-700 is available as a skid-mounted package with single-lift capacity. It is easily transported, installed and maintained at site. The package incorporates the gas turbine, gearbox, generator and all systems mounted on a single underbase. Turbine controls, generator control panel, motor control center for package motors and variable speed drive for starter motor are normally also package-mounted.
TECHNICAL DATA:-
(SGT-700 for Power Generation)
> Power output: 29.06 MW(e)
> Fuel: Natural gas / liquid fuel / dual fuel and other fuels capability on request
> Frequency: 50/60 Hz
> Electrical efficiency: 36 %
> Heat rate: 9,999 kJ/kW-hr (9,477 Btu/kW-hr)
> Turbine speed: 6,500 rpm
> Compressor pressure ratio: 18:1
> Exhaust gas flow / temperature: 91 kg/s, 518 °C (200 lb/s, 964 °F)
> NOx emissions (with DLE, corrected to 15 % O2 dry): ≤ 15 ppmV
SGT-700: Mechanical Drive
> Shaft output: 30.10 MW
> Fuel: Natural gas / liquid fuel / dual fuel and other fuels capability on request
> Electrical efficiency: 37.3 %
> Heat rate: 9,649 kJ/kW-hr (6,820 Btu/kW-hr)
> Turbine speed: 6,500 rpm
> Compressor pressure ratio: 18:1
> Exhaust gas flow / temperature: 91 kg/s, 518 °C (200 lb/s, 964 °F)
> NOx emissions (with DLE, corrected to 15 % O2 dry): ≤ 15 ppmV.
BENEFITS:-
SGT-700
Robust Industrial Design
> Low noise & low vibration level
> EB-welded compressor rotor for smooth running and trouble-free operation
> Heavy duty tilting pad bearings using mineral oil
> Casings with blade containment capability, thermal insulation and no requirement for forced ventilation
Environmentally Friendly
> Simple DLE system for stable operation
> Only engine in its class with DLE on liquid fuel
> World class NOx emissions
High Performance
> High efficiency for low fuel cost
> Rapid load changes (light industrial machine)
> Low degradation of output & heat rate
> Dual fuel DLE capability with fuel changeover capability (gas to liquid & liquid to gas) on load
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