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Title: Swozzle based burner tube premixer including inlet air conditioner for low emissions combustion

Abstract

A burner for use in a combustion system of a heavy-duty industrial gas turbine includes a fuel/air premixer having an air inlet, a fuel inlet, and an annular mixing passage. The fuel/air premixer mixes fuel and air into a uniform mixture for injection into a combustor reaction zone. The burner also includes an inlet flow conditioner disposed at the air inlet of the fuel/air premixer for controlling a radial and circumferential distribution of incoming air. The pattern of perforations in the inlet flow conditioner is designed such that a uniform air flow distribution is produced at the swirler inlet annulus in both the radial and circumference directions. The premixer includes a swozzle assembly having a series of preferably air foil shaped turning vanes that impart swirl to the airflow entering via the inlet flow conditioner. Each air foil contains internal fuel flow passages that introduce natural gas fuel into the air stream via fuel metering holes that pass through the walls of the air foil shaped turning vanes. By injecting fuel in this manner, an aerodynamically clean flow field is maintained throughout the premixer. By injecting fuel via two separate passages, the fuel/air mixture strength distribution can be controlled inmore » the radial direction to obtain optimum radial concentration profiles for control of emissions, lean blow outs, and combustion driven dynamic pressure activity as machine and combustor load are varied.« less

Inventors:
 [1];  [2];  [2];  [3];  [4];  [2];  [5];  [4];  [6]
  1. (Bolton, CT)
  2. (Scotia, NY)
  3. (Duanesburg, NY)
  4. (Clifton Park, NY)
  5. (Troy, NY)
  6. (Glenville, NY)
Publication Date:
Research Org.:
General Electric Company (Schenectady, NY)
OSTI Identifier:
874678
Patent Number(s):
US 6438961
Assignee:
General Electric Company (Schenectady, NY) NETL
DOE Contract Number:  
FC21-95MC31176
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
swozzle; based; burner; tube; premixer; including; inlet; air; conditioner; emissions; combustion; heavy-duty; industrial; gas; turbine; fuelair; fuel; annular; mixing; passage; mixes; uniform; mixture; injection; combustor; reaction; zone; flow; disposed; controlling; radial; circumferential; distribution; incoming; pattern; perforations; designed; produced; swirler; annulus; circumference; directions; assembly; series; foil; shaped; vanes; impart; swirl; airflow; entering; via; contains; internal; passages; introduce; natural; stream; metering; holes; pass; walls; injecting; manner; aerodynamically; clean; field; maintained; throughout; separate; strength; controlled; direction; obtain; optimum; concentration; profiles; control; lean; blow; outs; driven; dynamic; pressure; activity; machine; load; varied; gas turbine; reaction zone; air flow; natural gas; fuel flow; industrial gas; /60/

Citation Formats

Tuthill, Richard Sterling, Bechtel, II, William Theodore, Benoit, Jeffrey Arthur, Black, Stephen Hugh, Bland, Robert James, DeLeonardo, Guy Wayne, Meyer, Stefan Martin, Taura, Joseph Charles, and Battaglioli, John Luigi. Swozzle based burner tube premixer including inlet air conditioner for low emissions combustion. United States: N. p., 2002. Web.
Tuthill, Richard Sterling, Bechtel, II, William Theodore, Benoit, Jeffrey Arthur, Black, Stephen Hugh, Bland, Robert James, DeLeonardo, Guy Wayne, Meyer, Stefan Martin, Taura, Joseph Charles, & Battaglioli, John Luigi. Swozzle based burner tube premixer including inlet air conditioner for low emissions combustion. United States.
Tuthill, Richard Sterling, Bechtel, II, William Theodore, Benoit, Jeffrey Arthur, Black, Stephen Hugh, Bland, Robert James, DeLeonardo, Guy Wayne, Meyer, Stefan Martin, Taura, Joseph Charles, and Battaglioli, John Luigi. Tue . "Swozzle based burner tube premixer including inlet air conditioner for low emissions combustion". United States. https://www.osti.gov/servlets/purl/874678.
@article{osti_874678,
title = {Swozzle based burner tube premixer including inlet air conditioner for low emissions combustion},
author = {Tuthill, Richard Sterling and Bechtel, II, William Theodore and Benoit, Jeffrey Arthur and Black, Stephen Hugh and Bland, Robert James and DeLeonardo, Guy Wayne and Meyer, Stefan Martin and Taura, Joseph Charles and Battaglioli, John Luigi},
abstractNote = {A burner for use in a combustion system of a heavy-duty industrial gas turbine includes a fuel/air premixer having an air inlet, a fuel inlet, and an annular mixing passage. The fuel/air premixer mixes fuel and air into a uniform mixture for injection into a combustor reaction zone. The burner also includes an inlet flow conditioner disposed at the air inlet of the fuel/air premixer for controlling a radial and circumferential distribution of incoming air. The pattern of perforations in the inlet flow conditioner is designed such that a uniform air flow distribution is produced at the swirler inlet annulus in both the radial and circumference directions. The premixer includes a swozzle assembly having a series of preferably air foil shaped turning vanes that impart swirl to the airflow entering via the inlet flow conditioner. Each air foil contains internal fuel flow passages that introduce natural gas fuel into the air stream via fuel metering holes that pass through the walls of the air foil shaped turning vanes. By injecting fuel in this manner, an aerodynamically clean flow field is maintained throughout the premixer. By injecting fuel via two separate passages, the fuel/air mixture strength distribution can be controlled in the radial direction to obtain optimum radial concentration profiles for control of emissions, lean blow outs, and combustion driven dynamic pressure activity as machine and combustor load are varied.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

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