Fuel Oil Maintenance and Filtration Selection Bob Cade 1.
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Transcript of Fuel Oil Maintenance and Filtration Selection Bob Cade 1.
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Fuel Oil Maintenanceand Filtration Selection
Bob Cade
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Agenda• Introduction• About diesel fuel• Cetane• Stabilization and water• Fuel Maintenance• 3 steps to readiness• Filtration, how it works• More about additives• Testing details• Selecting and sizing a maintenance system• Conclusion
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Introduction
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• Critical Fuel Systems, div of BFS Industries, LLC• Building fuel oil equipment since 1946 • Created CFS to meet the unique needs of the
Mission Critical market• Find more at www.criticalfuelsystems.com
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Diesel Fuel
• How to size a system?• Diesel fuel or fuel oil?• Hydrophilic-fuel & water• Refining fuel oil• Catalyst or hydrogen cracking• Stability
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Diesel Fuel
• Fuel Quality• Water• Cetane number
• Maximum Water (and particulate) .05%• Cetane Number (CN)= ability to ignite• C16H34 (1-hexadecane)• Minimum allowed-40• Maximum effective-50
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Diesel Fuel
• Water• Delivered• Atmospheric• Produced in tank• New tank installation
• Biological contamination• Fungi, algae, bacteria
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Basic Fuel System
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Total Fuel Management
Day Tanks
Fill Manifolds
Pump SetsFiltration and Maintenance
Tank Selection Valve
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Filtration Installation
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Option #1Primary suction
Filtration suction
Filtration return
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Filtration Installation
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Option #2
Primary suction
Filtration suction
Filtration return
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Fuel Maintenance
• Filtration-remove water and particulate• Treatment-additives to maintain and
improve fuel quality.• Testing-test and adjust until consistently
good results are obtained
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Filtration Basics
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Separator Internals
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Filtration Options
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More About Additives
• Over 140 mfrs registered with EPA• Cetane boosters• Water emulsification agents• Stabilizers• Biocides
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Cetane Boosters
• Typically 2-ethylhexl nitrate (EHN)• About .04% optimal concentration• Not recommended-accelerates instability
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Water Emulsification Agents
• Any water in the fuel is bad• The only solution is to remove the water• Emulsifiers will only spread the water
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Stabilizers• Instability accelerated by:• Moisture• Oxygen• High Temperature-generators fuel bypass• Nitrates in cetane boosters
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• Instability results in:• Increase biological• Stratification• Varnishing
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Biocides
• Solvent base• Broad spectrum• Work in water and
fuel
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Testing• NFPA 110.8.3.8 requires annual testing to ASTM
standards
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ASTM D-613 cetane/combustionASTM D-1094 water ASTM D-2274 fuel stabilityASTM D-500 lubrication quality ASTM D-97 cold flow test
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Sizing and Selection
• Multiple Tank• How long can each storage tank be offline?• Determine generator capacity & calculate max
fuel flow• 7.1 gph per 100KWH
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Sizing and Selection
• Single Tank• As short of time as practical• 4 hour turn-over is typical• Or full flow type system
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Conclusion• Call it fuel oil or diesel fuel.• Fuel will degrade.• Fuel must be ready to go at all times, a life
may depend on it!• Fuel must be maintained to be ready!
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