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Improving Power Plant Gas Turbine Performance - Case Study | Parker Hannifin

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Gas turbine performance is affected by the environmental challenges of a specific power plant installation. In a recent project located in the Middle East, a filtration solution to protect the turbine needed to be designed to address each of the conditions faced, including varying amounts of dust, salt, moisture and other contaminants.
The spectrum of potential hazards that could be faced at a turbine installation means one filter cannot meet all needs. Even the different forms of dust or moisture present need to be considered within the design of the filter house. Learn how analysis, process change, and technology upgrade improved performance at this facility.

Published in: Engineering
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Improving Power Plant Gas Turbine Performance - Case Study | Parker Hannifin

  1. 1. January 22, 2019 Improving Power Plant Gas Turbine Performance David Tristante Sales Director Parker Hannifin, Filtration Group
  2. 2. Improving Power Plant Gas Turbine Performance: Agenda 1.Discussion of challenging environments 2.Installation before scenario 3.Filtration assessment and changes implemented 4.The results
  3. 3. Enhancing inlet pulse systems for performance improvement in harsh environments • The Persian Gulf coast experiences some of the most challenging conditions anywhere in the world for gas turbine operation. • Dust, sand and hot temperatures are just the start. • Winds from Iraq blow across the gulf. The wind heats up as it goes across the water until it hits Abu Dhabi and Dubai, resulting in heavy fog. 3
  4. 4. Site conditions are challenging • Inlet DP can rise quickly • Difficult maintenance • Short filter life • Gas Turbine shutdowns common Thick fog combined with high dust concentration complicates the filtration process • Middle East is brutal • Sandstorms • Heat • Mist, moisture from random fog events
  5. 5. Before This is a process customer, where the process was more valuable than the gas turbine. Availability was of utmost importance, as well as keeping the process equipment online. • Changing out pre-filters every 2-3 days • Labor intensive • Replacing final filters every 6-7 months, • Not meeting customer expectations of 2+ years MOST IMPORTANTLY • Opportunity cost of production downtime • Gas Turbine availability supremely important
  6. 6. Implementation 1. Optimize pulse system settings 2. Change coalescing technology
  7. 7. How a Pulse System Operates Operates 2 different ways: 1. Operate 24/7, cycling on pressure drop (time-based) “non-stop” 2. Operate only when differential pressure reaches certain level – “on demand” DIRTY CLEAN Coalescers Pulse filters
  8. 8. 1. Major Change: Optimize pulse settings Previous condition • Set to run continuously • Dust would get re-entrained on filter, ineffective cleaning • Process was repeated over and over, every single day Corrected condition • Set to a DP basis • System turns on a 1.5” wg and stops at 1.0” wg* *This was a learning. Typical set points for pulse cleanings start at 3.0” wg. The lower setting was reflective of regional environment.
  9. 9. 2. Major Change: Coalescing technology change Traditional coalescers clog quickly with dust and are forced out of place. After 12 months of operation, the new coalescing technology remains in place.
  10. 10. 2. Major Change: Coalescing media change • Unlike the traditional mat equivalents, the new synthetic media coalescers had been specifically designed to allow the sand and dust to pass through. • The new units work by using a two-stage coalescence configuration. The first stage is a moisture separator with coalescing efficiency down to 50 microns. • The second stage, a clearcurrent TS1000 coalescer, has 99 percent coalescing efficiency for droplets down to 10 microns but which has limited dust removal capability. • It is this deliberate limitation of dust removal capability which avoids blockages and significantly reduces the maintenance overheads where high levels of both dust and moisture are present. The dry dust is then easily handled by the filtration system, to prevent it from damaging the turbine.100% synthetic, washable in place media
  11. 11. The Results 1. After 2. Checklist to follow
  12. 12. After • No shutdowns due to filters and DP spikes • Self-cleaning filter life exceeding customer request of 2 years • Extended maintenance intervals, important for budget and labor required World-class filter performance and life for this difficult region
  13. 13. Checklist to follow A. Start difficult season with new, clean filters – less reactive to moist/dust combination B. Evaluate all filtration options – new technologies can be major upgrade C. Plan your outage to be in best position to survive a tough environment. Recommended to check and fix any issue around: ✓ Compressed air quality ✓ Pulse valves and diaphragms ✓ Tripods integrity and alignment ✓ Sealing gaskets ✓ Among other checkpoints of your intake
  14. 14. Thank you • David Trisante is sales director at Parker Hannifin Gas Turbine Filtration division. Trisante earned his engineering degree in the prestigious Universitat Politecnica de Catalunya (Spain) and the Aalborg Univeritet i Esbjerg (Denmark). He holds more than 20 years’ experience in purification and air pollution control markets as well as in a variety of Filtration equipment’s ranging from dust collectors, electrostatic precipitators or Gas Turbines air intake systems. • Dan Burch is pricing manager, Gas Turbine Filtration (GTF) Division, Parker Hannifin. He’s covered all aspects of the company’s filtration offerings, with a particular focus on developing marketing and pricing strategies for gas turbine inlet filtration products. He has 15 years of experience in marketing and journalism roles. Dan has a B.A. in journalism from Indiana University and an MBA in marketing from the University of Missouri-Kansas City (UMKC). • Presentation given at 2018 Middle East RoTIC Conference –(Parker Hannifin Gold Sponsor - http:roticmiddleeast.com David Tristante – david.tristante@parker.com

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