Gas Turbines SGT-800

SGT-800 Industrial Gas Turbine Power Generation: (ISO) 47.0 MW(e)Answers for energy.Industrial Gas TurbinesDesigned for heavy-duty operation, the SGT-800 affords very competitive economy for a variety of industrial power generation customers such as energy companies, independent power producers, utilities and municipalities. The high exhaust gas temperature of the SGT-800, combined with its high efficiency, makes it outstanding in cogeneration and combined cycle installations, including process industries and district heating schemes. The robust design and high reliability also makes the SGT-800 an excellent choice for oil and gas, refinery, simple cycle and standby power generation applications.The SGT-800 has true dual-fuel Dry Low Emission (DLE) combustion to minimize NOx emissions and ensure that the turbine complies with both global and regional emission regulations. Flexible maintenance, high availabilityWith the option of on-site maintenance or modular overhaul, the structural arrangement of the SGT-800 offers a flexible and financially beneficial main-tenance concept. This maintainability combined with the turbine’s robust, single-shaft arrangement, ensures its high operational availability. The high power-to-footprint ratio results in lower construction costs and allows for convenient siting in restricted industrial areas.The Siemens SGT-800 industrial gas turbine combines reliable, industrial design with the high efficiency and low emissions of the latest gas turbine technology.Key features Robust industrial heavy-duty design High electrical efficiency High exhaust energy, giving excellent cogeneration/combined cycle characteristics Dual-fuel Dry Low Emissions (DLE) technology Fuel-changeover capability Long-term efficiency – low deterioration Stable load-rejection capability, < 5 % overspeed Low gas-supply pressure Cold-end drive enabling straight and simple fit with HRSG Excellent operational availability and reliabilityMaintenance Established on-site service concept, eliminating need for special workshop maintenance Compact, modular layout enabling easy on-site maintenance Gas turbine can be removed on rollers through the sliding door Removable burners for quick and easy inspection Vertically split compressor casing Staff training in operation and maintenance 24/7 Siemens support Remote diagnostics availableSGT-800 workshop package assembly.SGT-800 Industrial Gas TurbineTechnical specifications Gas turbineOverview• Power generation: 47.0 MW(e) • Frequency: 50/60 Hz• Electrical efficiency: 37.5 %• Heat rate: 9,597 kJ/kWh (9,096 Btu/kWh)• Turbine speed: 6,608 rpm• Compressor pressure ratio: 19.9:1• Exhaust gas flow: 131.5 kg/s (289.9 lb/s)• Exhaust temperature: 544° C (1,011° F)• NOx emissions: (with DLE corrected to 15 % O2 dry) - Natural gas: =15ppmV - Liquid fuel: =42ppmVAxial Compressor• 15-stage axial-flow compressor - 3 stages variable guide vanes• Electron-beam welded rotor• Cr-steel blades and vanes• Abradable seals• Controlled Diffusion AirfoilsCombustion• 30 dual-fuel Dry Low Emissions burners• Welded annular sheet metal design• Thermal-barrier-coated inner surfaceTurbine• Single-module high-efficiency 3-stage turbine - two first stages and stator flanges are air-cooled - first stage of single-crystal material - third stage with interlocking shroudsBearings• Tilting-pad radial and thrust bearings• Vibration and temperature monitoringFuel System• Natural gas – Liquid fuel – Dual fuel• On-load fuel changeover capability• Load-rejection capability• Gas-supply pressure requirement: 27-30 bar(a) (390-435 psi(a))Speed Reduction Gearbox• Double helical design• Cold-end-driven generator• Speeds of 1,500 rpm and 1,800 rpm to suit 50 Hz or 60 Hz operationGenerator• Four-pole design• Rated voltage: 10.5 kV/11.0 kV/13.8 kV• 50 Hz or 60 Hz• Protection IP54• PMG for excitation power supply• Complies with -IEC/EN 6034-1 standardLubrication• Lubricating oil system placed on separate skid• 3x50 % AC-driven lube oil pumps with DC backupStarting• Electric start-motor connected to gearboxControl System• Siemens Simatic control system• Distributed Inputs/OutputsOther• Straight axial exhaustIn a combined-cycle configuration, the excellent efficiency and steam-raising capability of the SGT-800 provides the core of a reliable, efficient and powerful SCC-800 plant. As an example, in condensing operation, two SGT-800 gas turbines and one SST-700 steam turbine can provide 135 MW(e) with an efficiency up to 54.4 %.Example showing in-house installation of two SGT-800 gas turbines, two HRSGs and a Siemens SST-900 steam turbine in a combined-cycle plant.The combined-cycle cogeneration (district heating) plant of Göteborg Energi AB (Rya, Gothenburg) has a total efficiency of 94 %.Industrial plants based on the SGT-800 Combined-cycle power with SGT-8001. Combustion air inlet filter 2. Enclosure ventilation inlet 3. Generator cooling air inlet Height: 6.6 m (21 ft, 1“)Width: 7.1 m (23 ft, 4“)Length: 15.7 m (51 ft, 6“)Length: 20.0 m (65 ft, 7”) Height: 13.7 m (45 ft, 1“)94. Generator cooling air outlet 5. AC generator 6. Core engine7. Enclosure ventilation outlet 8. Combustion exhaust 9. Fire suppression cabinetSiemens offers industrial plant solutions based on the SGT-800 for power generation or cogeneration in simple or combined cycle modes. Experience from many operating plants, long-standing relations with key suppliers and the ability to offer up to full EPC solutions and service/maintenance/availability agreement packages are further advantages in the delivery of SCC-800 plants.Key features Reduced project risk due to proven plant concepts and experienced organization High plant reliability using in-house power trains, proven system designs and intelligent redundancy concepts Optimization of power train and balance of plant for excellent efficiency Low emissions per generated MWh due to high efficiency/high fuel utilization Multiple gas turbine plant solutions with extended load range, part-load efficiency and generation security Optimized plant layout combining high maintainability with a small footprintSGT-800 standard packageNominal generator output and heat rateConditions /assumptions:Fuel: Natural Gas LHV, 46,798 kJ/kg (20,118 Btu/lb)Altitude: Sea levelAmbient pressure: 1.013bar(a) (14.7psi(a)) Relative humidity: 60 %Inlet pressure loss: 5 mbar (2” H2O) Outlet pressure loss: 5 mbar (2” H2O) Fuel temperature: 5° C (41° F)Diagram conversion factors:To convert To Multiply by° C ° F (° Cx9/5)+32MJ/kWh Btu/kWh 949 Nominal exhaust mass flow and temperatureConditions /assumptions:Fuel: Natural Gas LHV, 46,798 kJ/kg (20,118 Btu/lb)Altitude: Sea levelAmbient pressure: 1.013bar(a) (14.7psi(a)) Relative humidity: 60 %Inlet pressure loss: 5 mbar (2” H2O) Outlet pressure loss: 5 mbar (2” H2O) Fuel temperature: 5° C (41° F)Diagram conversion factors:To convert To Multiply by° C ° F (° Cx9/5)+32 Unfired heat-recovery steam generationConditions /assumptions:Fuel: Natural Gas LHV, 46,798 kJ/kg (20,118 Btu/lb)Altitude: Sea levelAmbient pressure: 1.013bar(a) (14.7psi(a)) Ambient temperature: 15° C (59° F)Relative humidity: 60 %Boiler pinch point: 8K (14F)Boiler approach point: 5K (9F)Inlet pressure loss: 5 mbar (2” H2O) Outlet pressure loss: 25 mbar (10” H2O)Diagram conversion factors:To convert To Multiply by° C ° F (° Cx9/5)+32kg/s lb/s 2.2046bar psi 14.5SGT-800 Performancewww.siemens.com /energyPublished by and copyright © 2009:Siemens AGEnergy SectorFreyeslebenstrasse 191058 Erlangen, GermanySiemens AGEnergy SectorOil & Gas DivisionWolfgang-Reuter-Platz47053 Duisburg, GermanySiemens Energy, Inc.10730 Telge RoadHouston, Texas 77095, USASiemens Industrial Turbomachinery AB SlottsvaegenSE-61283 Finspong, SwedenFor more information, please contact our Customer Support Center.Tel: +49 180 524 70 00Fax: +49 180 524 24 71(Charges depending on provider)E-mail: support.energy@siemens.comOil & Gas DivisionOrder No. E50001-G430-A101-V1-4A00Printed in GermanyDispo 34806, c4bs 7447 P WS 0909.4Printed on elementary chlorine-free bleached paper. All rights reserved. Trademarks mentioned in this document are the property of Siemens AG, its affiliates, or their respective owners.Subject to change without prior notice. The information in this document contains general descriptions of the technical options available, which may not apply in all cases. The required technical options should therefore be specified in the contract.Heat rateGenerator outputExhaust mass flowExhaust temperature55 10.510.35045403530-40 -30 -20 -10 0 10 20 403010.19.99.79.5Compressor inlet air temperature, ° CGenerator output, MWHeat rate, MJ/kWh610590115125135145155105-400-3010-2020-10300401050206040803070570550530510Compressor inlet air temperature, ° CExhaust mass flow, kg/sExhaust temperature, °CSteam pressure, bar aSteam flow, kg/s262422201816200° C250° C300° C350° C400° C450° C500° CSaturated steam