Advanced Gas Turbine Technology GT26 phần 1 ppsx

Information contained in this document is provided without liability for information purposes only and is subject to change without notice.. No representation or warranty is given or to

Advanced Gas Turbine

Technology GT26

Presentation at the Jornada Tecnológica in Madrid

Johannes Wick

General Manager Gas Turbine Project Execution

26 October 2006

GT24/GT26 Gas Turbine

© ALSTOM 2006 All rights reserved Information contained in this document is provided without liability for information purposes only and is subject to change without notice No representation or warranty

is given or to be implied as to the completeness of information or fitness for any particular purpose Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited

Jornada Tecnológica

26 Oct 06/jw

R 4.38(26)

z Increasing Efficiency

z Improved Availability/Reliability

– Proven Technology

– Extended Lifetime

z Improved Operational Flexibility

– Part Load Operation

– Start-up times and loading gradients

– Fuel flexibility (e.g C2+ content)

GT Technology

Today and future market requirements

GT24/GT26 Gas Turbine

© ALSTOM 2006 All rights reserved Information contained in this document is provided without liability for information purposes only and is subject to change without notice No representation or warranty

is given or to be implied as to the completeness of information or fitness for any particular purpose Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited

Jornada Tecnológica

26 Oct 06/jw

R 4.38(26)

Annular Combustor

in GT8C2, GT13E2, GT24 and GT26

EV burners used in all ALSTOM gas turbines

Maintenance free, welded rotor

in all ALSTOM heavy duty gas turbines

GT Technology

Common ALSTOM GT Features

GT24/GT26 Technology

Welded Rotor

z One piece design with forged discs welded together

z Applied since 1929 to all GT and ST rotors

z Maintenance free - no restacking required – no major overhaul

No major overhauls:

Increased availability and reduced maintenance

Compressor

LP Turbine HP Turbine

© ALSTOM 2006 All rights reserved Information contained in this document is provided without liability for information purposes only and is subject to change without notice No representation or warranty

is given or to be implied as to the completeness of information or fitness for any particular purpose Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited

Jornada Tecnológica

26 Oct 06/jw

R 4.38(26)

GT24/GT26 Technology

Single Shaft Sequential Combustion

annular EV Combustor

Annular SEV Combustor

Retractable SEV Fuel Lance

24 SEV Burners

EV = EnVironmental

SEV = Sequential EnVironmental

Retractable

EV Burners with EV Fuel Lances

(GT24=20, GT26 =24)

GT24/GT26 Technology

EnVironmental (EV) Burner

z A standard burner design,

used in all ALSTOM gas turbines

z A simple robust design:

– No maintenance-prone cans, transition

pieces, or cross-fire tubes

– No burner inspections required

z Perfect air and fuel mixing:

– fuel gas injection into high velocity air

stream

– flame stabilized in combustor with no

contact with burner

EV dry low NOx Technology -the cost effective way to low emissions

© ALSTOM 2006 All rights reserved Information contained in this document is provided without liability for information purposes only and is subject to change without notice No representation or warranty

is given or to be implied as to the completeness of information or fitness for any particular purpose Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited

Jornada Tecnológica

26 Oct 06/jw

R 4.38(26)

GT24/GT26 Gas Turbine

GT24/GT26 Operation

Operation Concept

Load [% of base load]

100%

EV-Combustor Temperature

GT Exhaust Temperature

0%

SEV Combustor Temperature

SEV Ignition

at ~12% Load

40%

Inlet Air Mass flow (Inlet Guide Vane Position) VIGV idle position

VIGV open

z EV temperature maintained from about 30%-100% load for low emissions

z High exhaust temperature maintained from 40%-100% load for high CC part load efficiency