CleanBlade_Presentation

CleanBlade GTC1000 Treatment Program*For Gas Turbine Compressors

*Patent Pending

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GE Gas Turbine Portfolio – our start target market

Aeroderivatives: 13 –47 MW

• LM1600

• LM2000

• LM2500 / LM2500+

• LM6000

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LM1600 Gas Turbine

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LM2500 Gas Turbine

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Aeroderivative Market

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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

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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

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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…)

Compressor

Generator

Combustors

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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.

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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.


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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


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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.


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CleanBlade GTC1000• CleanBlade GTC1000 is…a concentrated

high performance, non-flammable, biodegradable, low foaming aqueous-based cleaner for cleaning Gas Turbine compressors.

• CleanBlade GTC1000’s unique chemistry (surfactants, emulsifiers, …) is specifically designed to remove deposits found on gas turbine compressor blades.

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• 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 (<0.004%)

– Specifically formulated to ensure that no incremental trace elements can contribute to corrosion

– Contains a unique blend of corrosion inhibitors

CleanBlade GTC1000 Product Features:

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• 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

CleanBlade GTC1000 Product Features:

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Laboratory Cleaning Efficiency Test Apparatus

MIL-PRF-85704C (1998)

GE Proprietary

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99.4 99.6 99.8 100.0 100.2 100.4 100.6

95% Confidence Interval for Mu

99.85 99.95 100.05 100.15 100.25

95% Confidence Interval for Median

Variable: 2595-122-1

A-Squared:P-Value:

MeanStDevVarianceSkewnessKurtosisN

Minimum1st QuartileMedian3rd QuartileMaximum

99.860

0.186

100.000

1.1070.004

100.039 0.266

7.07E-02-1.027094.22461

11

99.390100.000100.000100.100100.510

100.218

0.467

100.113

Anderson-Darling Normality Test

95% Confidence Interval for Mu

95% Confidence Interval for Sigma

95% Confidence Interval for Median

Descriptive Statistics

CleanBlade Lab Performance Capability

GE Proprietary

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Actual (LT)

Potential (ST)

99 100 101

Process Performance

LSL

Actual (LT) Potential (ST)

1

10

100

1000

10,000

100,000

1,000,000

0 5 10

Actual (LT) Potential (ST)

PPM

Sigma(Z.Bench)

Process Benchmarks

6.31

1.56E-06

6.97

1.37E-04

Process Demographics

Date:

Reported by:

Project:

Department:

Process:

Characteristic:

Units:

Upper Spec:

Lower Spec:

Nominal:

Opportunity:

06/16/03

Laibin Yan

GT Cleaner NPI

Cooling Technology

Cleaning Efficiency

%

98.36

100

1

Report 1: Executive Summary

CleanBlade Lab Performance Capability

GE Proprietary

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Steam Cleaning Efficiency TestingMIL-PRF-85704C

Solutions heated at 80oC

GTC1000

GTC1000

Solutions at room temp (35oC)

Benchmark*

Benchmark*

Benchmark*

Benchmark*

Solutions heated at 80oC

Solutions at room temp (35oC)

GTC1000

GTC1000

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

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Accelerated Storage Stability Test

Steel (SAE-AMS5046)

CleanBlade GTC1000 passed the

Accelerated Storage Stability Test

(MIL-PRF-85704C)

GE Proprietary

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• 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

Cleaning Process

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GTC1000 Cleaning Process

Step 1: Prepare cleaning solution:

Mix GTC1000 (1 part) w/demineralized water (4 parts) in day tank.

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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


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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


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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


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• 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.)

CleanBlade US Field Trials

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Average Decrease in Heat Rate = 47.3 BTU/KWhrAnnual Savings ~ $246,500/year @ $3.5/MMBTUAnnual Savings ~ $317,000/year @$4.5/MMBTU

CleanBlade Cleaning Impact

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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 solution…trucked 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?

CleanBlade Application Data

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Air temperature

Gas Turbine Performance Influencers

Effect of ambient temperature

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• Air humidity

• Inlet and exhaust losses

• Fuels

• Fuel heating

• Diluent injection

• Air extraction

GT Performance Influencers

CleanBlade_Presentation

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