Low smoke combustion system
Abstract
Abstract A COMBUSTION SYSTEM FOR A GAS TURBINE WHICH PRODUCES A SMOKELESS EXHAUST STACK IS CONSTRUCTED SUCH THAT THE COMBUSTION REACTION ZONE WILL OPERATE WITH A LEAN FUEL-AIR MIXTURE. THE LEAN COMBUSTION ZONE IS STABILIZED BY A VORTEX GENERATED AROUND THE CENTERLINE OF THE LINER, CREATING GAS FLOW PATTERNS THAT CAUSE STRONG BACK FLOW IN THE COMBUSTION REACTION ZONE. THIS VORTICAL FLOW ALSO SWEEPS OUT THE FUEL-RICH POCKETS, THUS FACILITATING COMPLETE COMBUSTION. A THERMAL SOAKING REGION WITH NO AIR HOLES IN THE LINER IS PROVIDED DOWNSTREAM OF THE LAST ROW OF COMBUSTION AIR HOLES HAVING AN AXIAL LENGTH OF AT LEAST 1.25D WHEREIN THAT SOOT WHICH MAY BE FORMED IN THE COMBUSTION PROCESS IS CONSUMED BY A VERY FAST CHEMICAL REACTION. THE TEMPERATURE THROUGHOUT THE SOAKING REGION IS MAINTAINED SUFFICIENTLY HIGH TO INDUCE SUCH A REACTION. AXIALLY DOWNSTREAM OF THIS REGION, TEMPERING AIR IS ADDED TO THE COMBUSTION PRODUCTS SUCH THAT THEY ARE COOLED SUFFICIENTLY IN ORDER TO ENTER THE FIRST STAGE NOZZLE AT THE DESIRED TEMPERATURE.
Inventors
- 👤 William E Hill
- 👤 Milton B Hilt
- 👤 Edward P Hopkins
- 👤 Robert H Johnson
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
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