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Title: Mechanical swirler for a low-NO{sub x}, weak-swirl burner

Abstract

Disclosed is a mechanical swirler for generating diverging flow in lean premixed fuel burners. The swirler of the present invention includes a central passage with an entrance for accepting a feed gas, a flow balancing insert that introduces additional pressure drop beyond that occurring in the central passage in the absence of the flow balancing insert, and an exit aligned to direct the feed gas into a combustor. The swirler also has an annular passage about the central passage and including one or more vanes oriented to impart angular momentum to feed gas exiting the annular passage. The diverging flow generated by the swirler stabilizes lean combustion thus allowing for lower production of pollutants, particularly oxides of nitrogen. 16 figs.

Inventors:
;
Issue Date:
Research Org.:
Univ. of California (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
335456
Patent Number(s):
5879148
Application Number:
PAN: 8-837,377
Assignee:
Univ. of California, Oakland, CA (United States)
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 9 Mar 1999
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; 54 ENVIRONMENTAL SCIENCES; GAS BURNERS; FLOW REGULATORS; VORTEX FLOW; DESIGN; NITROGEN OXIDES; AIR POLLUTION ABATEMENT

Citation Formats

Cheng, R K, and Yegian, D T. Mechanical swirler for a low-NO{sub x}, weak-swirl burner. United States: N. p., 1999. Web.
Cheng, R K, & Yegian, D T. Mechanical swirler for a low-NO{sub x}, weak-swirl burner. United States.
Cheng, R K, and Yegian, D T. Tue . "Mechanical swirler for a low-NO{sub x}, weak-swirl burner". United States.
@article{osti_335456,
title = {Mechanical swirler for a low-NO{sub x}, weak-swirl burner},
author = {Cheng, R K and Yegian, D T},
abstractNote = {Disclosed is a mechanical swirler for generating diverging flow in lean premixed fuel burners. The swirler of the present invention includes a central passage with an entrance for accepting a feed gas, a flow balancing insert that introduces additional pressure drop beyond that occurring in the central passage in the absence of the flow balancing insert, and an exit aligned to direct the feed gas into a combustor. The swirler also has an annular passage about the central passage and including one or more vanes oriented to impart angular momentum to feed gas exiting the annular passage. The diverging flow generated by the swirler stabilizes lean combustion thus allowing for lower production of pollutants, particularly oxides of nitrogen. 16 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {3}
}

Works referenced in this record:

Measurement of Scalar Dissipation in Premixed Flames
journal, March 1996