AE94.2 Gas Turbine

AE94.2
GAs TuRBINE

AE94.2 - The Gas Turbine for
a Flexible Approach
The AE94.2 Gas Turbine meets customer needs
in terms of performance, emissions and operational/fuel
flexibility for intermediate-class gas turbines,
by delivering a competitive and cost-effective
package based on established technology.
The latest continuous improvements have been
made available for previous releases through a
retrofittable package.
With the special AE94.2K version, this gas turbine
can also burn low-BTU fuels and high H 2 content
gas.
AE94.2 Gas Turbine and Generator view
A proven layout for a reliable engine
• Compressor cold-end drive
• Compressor with variable inlet guide vanes
• Disk-type rotor with two bearings
• Improved compressor exhaust diffuser
• 2 vertical silo type combustion chambers
• 16 hybrid burners (diffusion or premix
operation) for natural gas and light oil
• Axial exhaust
AE94.2 Gas Turbine and Generator package
• Turbine blades/vanes, hot casing and mixing
chamber with advanced coating and Thermal
Barrier Coating (TBC)
• Easy maintenance features (all blades and
vanes are replaceable with rotor in place, and
the hot gas path can be inspected with no need
to open the turbine)
• Fuel system designed to manage non conventional
fuels (naphtha, crude and heavy fuel oil, low
BTU gases, hydrogen rich fuels, coal gases,
dwell gases, etc.)
Performance (natural gas, ISO conditions, base load)
Power output at generator terminals [MW]
Efficiency at generator terminals [%]
Exhaust gas mass flow [kg/s]
Exhaust gas temperature [°C]
1 GT + 1 ST Combined cycle power output [MW]
1 GT + 1 ST Combined cycle efficiency [%]
2 GT + 1 ST Combined cycle power output [MW]
2 GT + 1 ST Combined cycle efficiency [%]
AE94.2
170
34.7
535
552
258.4
53.1
518
53.3
A benchmark in flexibility
The AE94.2 gas turbine is a benchmark for both
operational and fuel flexibility. The ability to adapt
rapidly to provide the requested grid power is becoming
more and more important:
• start up and loading time: full speed no load reached
in less than 5 minutes and baseload conditions
about 15 minutes later. Fast loading gradient
procedures can reduce this time to about 6 minutes

AE94.2 Gas Turbine compressor
• best dynamic performance during grid support:
40 MW in few seconds is a well proven result on
several units.
The AE94.2 is the best solution to satisfy increasing
market demand of greater fuel flexibility:
• optimum operation with a broad variety of fuel
compositions and characteristics (from naphtha
to heavy oil, fuel gas from different sources:
refinery, blast furnaces, dwells, etc.).
• gas/oil fuel change-over: can be performed across
almost the entire load range and carried out in as
little as a few minutes in certain conditions
• mixed operation (concurrent combustion of gas
and oil): this mode is particularly useful when
neither fuel gas nor fuel oil can be supplied in
sufficient quantities to achieve the base load.
Low emissions for challenging targets
AE94.2
NOx [mg/Nm 3 ] *
CO [mg/Nm 3 ] *
FUEL GAS
PREMIX
DRY
50 **
30
PREMIX
FUEL OIL
DIFFUSION
DRY 140% water/fuel
150 85
30 30
* Dry gases, 15% O2 ** 30 mg/Nm 3 option available
The VeLoNOx burner, designed by Ansaldo
Energia to reduce NOx emissions in fuel gas
mode, achieves NOx emissions levels lower than
30 mg/Nm 3 .
Recognised excellence in commissioning
and after sales services
Ansaldo Energia offers a full range of services and
qualified personnel for erection and/or supervision,
start-up and testing of your AE94.2 gas turbine.
The availability of standard arrangements and in
some cases packaged solutions ensures rapid, problem-free
erection, start-up and commissioning.
The Ansaldo Energia Service Organisation provides
technical assistance services worldwide, available 24
hours a day, 7 days a week, in the fields of maintenance,
spare parts supply and preventive maintenance
programs, so ensuring that customers are in the
best position to achieve optimum operation.
Continuous process improvements guarantee the
best assistance for our customers: for example,
the latest maintenance procedures include extended
spare parts stocks and streamlined logistics.
AE94.2K - Matching customer fuel flexibility
needs with a tailored solution
Ansaldo Energia has been working on the use of
low caloric value gas in heavy duty gas turbines
since 1997. The special AE94.2K version,
specifically designed for low BTU fuels (syngas,
steel mill, blast furnace gases, biomass, etc.),
can burn fuels with LHV in the range 8-13 MJ/kg
and lower. The combustion system, including the
modification to allow it to burn a wide range of
fuels, has been patented.
Power Plant
Feedstock
Natural Gas
Integration
Net power
(GT/CC)
First firing date
GT EOH (2011)
Isab Energy Priolo G.
Gasification of Asphalt
0 %
2x162 MW/520 MW
Nov 1998/Apr 1999
Unit 1: 137,000
Unit 2: 110,000
Elettra GLT Servola
Feed Mill Gas
45 - 49%
1x110 MW/180 MW
Jul 2000
96,000
Enipower Ferrera E.
Gasification of Asphalt
0 - 30%
1x166 MW/255 MW
Mar 2004
62,000
Proud of our worldwide references - decades of
experience:
Our AE94.2 fleet is installed worldwide, and has
an excellent track record of robustness, operational
flexibility and durability.
5,000,000
4,500,000
4,000,000
3,500,000
3,000,000
2,500,000
2,000,000
1,500,000
1,000,000
500,000
1996
AE94.2 Cumulative
Equivalent Operating Hours
Dec. 2011: 4 300 000 EOH
1998
2000
2002
2004
Years
2006
2008
2010

Ansaldo Energia AE94.2
Gas Turbine References in the World
UK (3)
Barry (1)
Ballylumford (2)
ITALY (7)
Rosignano (1)
Priolo Gargallo (3)
Servola (1)
Cassano d’Adda (1)
Ferrera Erbognone (1)
ALGERIA (6)
Larbaa (4)
Batna (2)
Ajn Djasser (2)
Labreg (2)
CHILE (1)
Mejillones (1)
POLAND (1)
Lublin (1)
EGYPT (4)
6 th October
OTHER MIDDLE
EAST (44)
16152 Genova - Via N. Lorenzi, 8 - Italy
Tel: +39 010 6551 - Fax: +39 010 655 3411
E-mail: ansaldoenergia@aen.ansaldo.it
ansaldoenergia.com
FINLAND (3)
Espoo (1)
Forssa (2)
LEBANON (2)
Zaharani (1)
Beddawi (1)
JORDAN (2)
Amman East (2)
DUBAI (3)
Jabel Ali (3)
CONGO REP. (2)
Pointe-Noire (2)
OMAN (5)
Barka (5)
PAKISTAN (1)
Liberty (1)
INDIA (1)
Samalkot (1)
BANGLADESH (3)
Meghnaghat (2)
Sylhet (1)
Stampa: Microart Recco - Genova 05/2012 Petergraf