CleanBlade GTC1000 Treatment Program* For Gas Turbine

1
CleanBlade GTC1000 Treatment Program

• For Gas Turbine Compressors

Patent Pending
2
GE Gas Turbine Portfolio our start target market

• Aeroderivatives 13 47 MW
• LM1600
• LM2000
• LM2500 / LM2500
• LM6000

3
LM1600 Gas Turbine
4
LM2500 Gas Turbine
5
Aeroderivative Market
6
GE Gas Turbine Portfolio

• Heavy Duty Gas Turbines
• Frame 6 42 76 MW
• 6B 1000 units globally
• Frame 9 126 255 MW
• Advancements as FA / FB / H series
• F/FA 60 units for 50 Hz market (7FA 180 units
  for 60 Hz market)
• 9H Baglan Bay, Wales 480 MW

7
Table of Contents

• Gas Turbine Compressor Fouling - Problem
  Description
• CleanBlade Product Description Lab Test Data
• GT Compressor Cleaning Process
• US Field Trial Experience
• GT Compressor Performance Monitoring

8
Gas Turbine Compressor Fouling

• Compressor sections of Power Plant gas turbines
  ingest large quantities of outside air for the
  combustion process, that can contain
• Particulate matter
• Aerosols of hydrocarbons
• Other organic compounds
• Industrial production gases (i.e. nitrogen,
  chlorine, sulfur)

9
Gas Turbine Compressor Fouling

• Ingested compounds and fine particulate matter
  can deposit on compressor blades, altering the
  aerodynamics of the blades, decreasing the
  efficiency of the compressor and resulting in
• Power losses
• Higher operating temperatures
• Increased fuel consumption
• Shorter component life
• Some turbines are more prone to fouling than
  others (i.e. those operating in contaminated air)
• However all GT compressors foul to some extent.

10
Gas Turbine Compressor Fouling

• Routine off-line washing of compressors with an
  approved cleaning solution will remove the
  deposited fouling, restoring the aerodynamics and
  compressor efficiency, helping to ensure
• Maximum available power output
• Improved fuel efficiency
• Reduced wear and tear on machine components
  (bearings, blades )
• On-line washing is not as efficient as off-line
  washing
• The purpose of on-line washing is to extend the
  period between off-line washes by regaining some
  of the lost power.

11
Gas Turbine Compressor Fouling

• Depending on the amount of deposits on the
  blades, off-line washing (using the correct
  cleaner) can result in efficiency gains of 2-3.
• For a typical Power Plant gas turbine, this can
  translate into savings of hundreds of thousands
  of dollars a year.
• The time between off-line washes will be dictated
  by
• Site operations
• Degree of air pollution
• Amount of fine particulate matter in the air
• Acceptable power loss by the operator
• Use of on-line washes

12
Gas Turbine Compressor Fouling

• To monitor the effectiveness of off-line
  cleanings, the following compressor parameters
  can be monitored
• Compressor inlet and discharge pressures and
  temperatures
• Exhaust gas temperature (EGT)
• Measuring the EGT at a specific power setting
  before and after a wash will indicate the
  efficiency gained through the washing.
• A more efficient (i.e. cleaner) compressor will
  show a decrease in the EGT.

13
CleanBlade GTC1000

• CleanBlade GTC1000 isa concentrated high
  performance, non-flammable, biodegradable, low
  foaming aqueous-based cleaner for cleaning Gas
  Turbine compressors.
• CleanBlade GTC1000s unique chemistry
  (surfactants, emulsifiers, ) is specifically
  designed to remove deposits found on gas turbine
  compressor blades.

14
CleanBlade GTC1000 Product Features

• Water based clear solution with a mild pleasant
  odor
• Excellent cleaning performance
• Attains cleaning efficiencies similar to
  solvent-based products.
• Low foaming, easy rising off.
• Low alkali metals and ash levels (lt0.004)
• Specifically formulated to ensure that no
  incremental trace elements can contribute to
  corrosion
• Contains a unique blend of corrosion inhibitors

15
CleanBlade GTC1000 Product Features

• Environmentally friendly, biodegradable
• Where permitted, the cleaning solution can be
  discharged into the local sewer system,
  eliminating the need to collect the solution for
  disposal.
• Safe to use
• Contains no solvents (w/aromatic hydrocarbons)
  reducing the amount of protective clothing
  required during cleaning
• Approved for use by GE Power Systems
• Confirms fully with following GE Turbine
  specifications GEK103623B, GEK107122B,
  GEK107518A, GEK110529, GEI41042

16
Laboratory Cleaning Efficiency Test Apparatus
MIL-PRF-85704C (1998)
GE Proprietary
17
CleanBlade Lab Performance Capability
GE Proprietary
18
CleanBlade Lab Performance Capability
GE Proprietary
19
Steam Cleaning Efficiency TestingMIL-PRF-85704C
GTC1000
Benchmark
Benchmark
GTC1000
Solutions heated at 80oC
Solutions heated at 80oC
GTC1000
Benchmark
Benchmark
GTC1000
Solutions at room temp (35oC)
Solutions at room temp (35oC)
Soil on the panel was baked at 232oC for 15 min
testing with 77oC Stream
Soil being applied onto the panel testing with
54oC Stream
GE Proprietary
20
Accelerated Storage Stability Test
Steel (SAE-AMS5046) CleanBlade GTC1000 passed
the Accelerated Storage Stability Test
(MIL-PRF-85704C)
GE Proprietary
21
Cleaning Process

• The local GE Water Process Technologies
  representative will work with the plant team to
  develop a specific cleaning procedure (frequency,
  dosage, flow rates ) utilizing GTC1000 for the
  on-site gas turbines
• The procedure will following the turbine
  manufacturers instructions
• What follows is a brief overview of the cleaning
  process

22
GTC1000 Cleaning Process

• Step 1 Prepare cleaning solution
• Mix GTC1000 (1 part) w/demineralized water (4
  parts) in day tank.

23
GTC1000 Cleaning Process

• Step 2 Apply cleaning solution to GT
  compressor
• Pump dilute GTC1000 cleaning solution according
  to cleaning procedure while GT is operating at
  crank speed for specified time
• Continue pumping dilute GTC1000 cleaning solution
  during coastdown until day tank solution contents
  are empty.
• Allow cleaning solution to soak for specified
  time
• Depending on the level of fouling, repeat
  cleaning procedure as required

24
GTC1000 Cleaning Process

• Step 3 Rinse GT compressor
• Pump rinse water according to specified cleaning
  procedure while GT is operating at crank speed
  for specified time
• Continue pumping rinse water
• Repeat rinse cycle as specified by cleaning
  procedure as required

25
GTC1000 Cleaning Process

• Step 4 Drain and Dry GT compressor
• Allow gas turbine to drain and dry for specified
  time or until low point drains are dry at crank
  speed

26
CleanBlade US Field Trials

• Six trials completed Five 7FAs and one 7EZ
• 7FA trials General (9FA trials will probably be
  similar)
• Have pulsed wash system (1 min pulses of
  wash/rinse water 3 min spins without water
• Not much rinse water used foaming and rinsing
  are issues
• 20 to 60 liter of detergent normally used
• Sometimes there is a long distance from detergent
  tank to turbine (150-200 meters) Hence, must
  carefully monitor/plan timing of detergent
  additions
• Results of cleanings have been positive. No
  negative comments from customers. Customer
  comments less foam and better rinsing
• Have detailed performance data at one site
  (cleaning impact). Data from other sites
  available soon.
• Want comparisons with competitive water-based
  cleaners at differing settings (industrial vs.
  rural vs. seacoast, etc.)

27
CleanBlade Cleaning Impact

• Average Decrease in Heat Rate 47.3 BTU/KWhr
• Annual Savings 246,500/year _at_ 3.5/MMBTU
• Annual Savings 317,000/year _at_4.5/MMBTU

28
CleanBlade Application Data

• Information/Data Needed from CleanBlade GTC1000
  Applications
• Turbine model
• Amount of actual employed detergent used
• Temperature and amount of wash water used
• How much is the actual product diluted
• Ambient temperature
• Site location Industrial? Rural? Suburban?
  Seashore?
• When was the turbine cleaned last?
• Was the spent cleaning solutiontrucked away?
  Discharged to a sanitary sewer system? Directly
  discharged?
• Performance/efficiency data, before and after
  cleaning
• Performance/efficiency data of a competitive
  product, before and ater cleaning
• Was the foaming that was observed during cleaning
  excessive?
• How did the customer rate the cleaning compared
  to competitive products?

29
Gas Turbine Performance Influencers

• Air temperature

Effect of ambient temperature
30
GT Performance Influencers

• Air humidity
• Inlet and exhaust losses
• Fuels
• Fuel heating
• Diluent injection
• Air extraction