Fuel Tech, Inc. · NASDAQ:FTEK
Fuel Tech — NTPC's O & M Conference 2016
20 slides from Fuel Tech's conference presentation, Feb 14, 2016
Slide 1: Minimizing Unplanned Outages and Boiler Fouling Utilizing On-Line Impulse Cleaning
James J Ferrigan Director – Worldwide Business Development Fuel Tech, Inc. NTPC’s O & M Conference February 14, 2016 “Minimizing Unplanned Outages and Boiler Fouling Utilizing On-Line Impulse Cleaning”
Slide 2: Optimizing Plant Operations
OPTIMIZING PLANT OPERATIONS IMPULSE Cleaners can improve heat transfer efficiency, reduce operational and maintenance costs, and minimize or eliminate costly unplanned outages. • Small-scale, single tube, hydrogen/air • Ethylene/air, detonation fundamentals, high pressure • Multitube, turbine intera
Slide 3: Advantages of IMPULSE Cleaners
ADVANTAGES OF IMPULSE CLEANERS • The frequent, proactive operation of the impulse cleaner minimizes ash build up and sintering of deposits on heat transfer surfaces • Provides 360°, non line-of-sight cleaning that has the ability to remove tube-to-tube bridging and minimize platenization • No harsh
Slide 4: Typical Challenges with Sootblowing
TYPICAL CHALLENGES WITH SOOTBLOWING • Soot blowers are not able to clean the shaded areas behind the first rows of tubes. • The accumulations in these blinded areas Platenization and are difficult to between tubes clean once they have had an opportunity to form a structure.
Slide 5: Typical Challenges with Sootblowing
TYPICAL CHALLENGES WITH SOOTBLOWING Tube Erosion Tube Leaks • Soot blower erosion is often the main contributing factor for loss of boiler availability. • High velocity steam and improper alignment of the blower with respect to the furnace walls, superheater tubes, reheater tubes, economizer tubes o
Slide 6: Impulse Cleaning: Boiler Areas Conducive to Cleaning
IMPULSE CLEANING BOILER AREAS CONDUCIVE TO CLEANING Molten deposits - Not receptive to cleaning by IMPULSE cleaner* *NOTE: Unless deposits are chemically altered to enhance removal Elevated temps, possible plastic” ash - Use caution Temps lower than 1,500°F – Very receptive to IMPULSE cleaners
Slide 7: Impulse Cleaning
IMPULSE CLEANING Boiler Tubes Encompassing Shockwave Areas of platenization between boiler tubes • Intense cleaning waves approach tube surfaces, encompass tube surfaces, transition around to back side, reconnect, and continue travelling • Non-Line-Of-Sight Cleaning • Deep Penetration throughout tub
Slide 8: Cleaning Action
CLEANING ACTION • Supersonic shock waves penetrate the deposited material and reflects from tube walls and interior surfaces • Reflected waves propagate through the deposited material on the tube surface and reflect from this surface as rarefaction waves • Rarefaction waves propagate back toward the
Slide 9: Pulse Detonation Cleaning: Sound vs Detonation
CLEANING WITH PULSE SOUND vs DETONATION • A shock wave is characterized by a sharp increase in pressure and temperature across a boundary. • They are orders of magnitude more intense than sound waves Acoustic cleaners utilize sound waves to • The resulting shockwaves provide a large create particle
Slide 10: System Specifications
SYSTEM SPECIFICATIONS IMPULSE Cleaners are constructed from 3 separate pieces. • A: Combustion chamber, is fabricated from stainless steel and is about 48” long and 2” in diameter. • B: Casting that diverges from two- inches out to approximately 6” in diameter over an axial length of 30”. There are
Slide 11: System Components
SYSTEM COMPONENTS • Combustion Assembly • Control System • Fuel Manifold
Slide 12: How It Works
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Slide 13: IMPULSE Cleaning Technology Case Study: Western Sugar
IMPULSE Cleaning Technology Case Study Western Sugar Project Overview • Boilers were experiencing severe pluggage across the superheat area and unable to keep boilers in service during peak processing season • Slag mitigation technology was ineffective forcing outages to clean boiler tubes • IMPULSE
Slide 14: IMPULSE Cleaning Technology Case Study: Dynegy Vermilion
IMPULSE Cleaning Technology Case Study Dynegy – Vermilion Power Station, Unit 1 Project Overview Results • Remove ash from unit’s spiral wound tube economizer Increased ΔT across economizer over 70°F • IMPULSE cleaners installed on east and west sides of boiler in March 2009 Decreased air heater
Slide 15: IMPULSE Cleaning Technology Case Study: FirstEnergy
IMPULSE Cleaning Technology Case Study FirstEnergy, Unit 5 Project Overview • Fuel switching lead to platenization and pluggage problems in backpass which sootblowers could not resolve • Economizer – stagger Fintube arrangement • Six (6) IMPULSE cleaners installed in March 2007 • Each unit performs
Slide 16: IMPULSE Cleaning Technology Case Study: Xcel Sherco Unit 3
IMPULSE Cleaning Technology Case Study XCel, Sherco Station – Unit 3 Project Overview • Eliminate tube erosion to increase tube life • Improve heat rate • Minimize or eliminate use of sootblowers • One (1) IMPULSE cleaner was installed on west side of boiler through existing backpass access door • F
Slide 17: IMPULSE Cleaning Technology Case Study: Kalaeloa Partners
IMPULSE Cleaning Technology Case Study Kalaeola Partners – Kapolei, HI Project Overview • Bi-weekly outages to perform boiler/turbine wash and fouling turned to “cement” after washes if not completed • DP across tube banks and stack temperatures increased throughout cycle due to fouling • Very aggre
Slide 18: Partial Installation List
PARTIAL INSTALLATION LIST tion Boiler | # of IMPULSE Notes atlanta os seid os Size Cleaners Covanta Energy | Westbury Westbury | NY 36 sian aetna emma seein eae First Energy Sammis Stratton OH 300 3 Units Not currently running-Plant Shut down First Energy Ashtabula Ashtabula | OH 268 6 Units Plant h
Slide 19: Partial Installation List
PARTIAL INSTALLATION LIST KC Board of 2 units Top of back pass Nearman Public Utilities Kansas City | KS 261 City Utilities of 2 units James River ingfield | MO 96 Springfield iil City Utilities of 2 units Southwest Stn ingfield | MO 195 Springfield a TVA Gallatin Gallatin ™ 320 8 Units Unit 2 boile
Slide 20: Questions?
Questions? .. FUEL TECH