Patent US3748080A successfully refreshed from Google Patents.
US3748080A
Expired / Lapsed
US
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Combustion control apparatus using a liquid spray
Assignee: Peabody Engineering Corp
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Filing: 1971-12-27
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Granted: 1973-07-24
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Expires: 1991-12-27
Abstract
Abstract Combustion control apparatus for use with a burner of the type having a centrally located liquid fuel atomizer or a gas ring or center fuel gas arrangement mounted to produce a cone of flame in a combustion chamber. The control apparatus includes a ring of nozzles disposed around the burner and adapted to direct a jet or spray of water or other fluid, such as a slurry or air borne solids onto the flame and an additional duct adapted to direct a stream of air or other fluid onto the flame. The fluid is adapted to eliminate excessively hot combustion zones by cooling the flame at such zones and eliminating temperature peaks for thereby increasing the period of combustion in the chamber so as to reduce or eliminate the formation of undesirable oxidation products which are formed at high temperature.
Inventors
- 👤 J Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:17
CPC Classifications
F; F23; F23L; F23L7/00; F23D; F23D14/00; F23D17/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
108 words
In combination with a furnace having a wall provided with an opening forming a burner throat, a burner tube connected to supply air for combustion to said throat and a fuel barrel disposed axially of said burner tube and having a tip adapted to produce a cone of flame, a series of nozzles extending through said wall around said throat opening and adapted to project a liquid spray onto said cone of flame, an annular header disposed to supply liquid to said nozzles, and means to adjust the radial angle of said spray for controlling the zone of impingement of said liquid spray on said cone of flame.
Claim 2
Dependent Claim
108 words
In combination with a furnace having a wall provided with an opening forming a burner throat, a burner tube connected to supply air for combustion to said throat and a fuel barrel disposed axially of said burner tube and having a tip adapted to produce a cone of flame, a series of nozzles extending through said wall around said throat opening and adapted to project a liquid spray onto said cone of flame, an annular header disposed to supply liquid to said nozzles, and means to adjust the radial angle of said spray for controlling the zone of impingement of said liquid spray on said cone of flame.
Claim 3
Dependent Claim
39 words
Apparatus as set forth in claim 1 in which said means for adjusting the radial angle of said liquid spray comprises deflector plates disposed adjacent each nozzle to direct the spray onto selected portions of said cone of flame.
Claim 4
Dependent Claim
18 words
Apparatus as set forth in claim 2 including means for adjusting the angular positions of said deflector plates.
Claim 5
Dependent Claim
31 words
Apparatus as set forth in claim 1 including a set of gas passages extending through said wall around said throat opening adapted to direct a gas onto said cone of flame.
Claim 6
Dependent Claim
24 words
Apparatus as set forth in claim 4 including means supplying a gas to said passages and means to control the quantity of such gas.
Claim 7
Dependent Claim
31 words
Apparatus as set forth in claim 5 in which a manifold is connected to said passages and means is provided to supply a controlled quantity of a gas to said manifold.
Claim 8
Dependent Claim
19 words
ApparAtus as set forth in claim 4 in which said gas passages are peripherally displaced around said throat opening.
Claim 9
Independent Claim
85 words
The method of controlling the flame in a fuel burner having a burner adapted to produce a cone of flame in a throat opening in a furnace wall which comprises directing a liquid spray onto said cone of flame from a plurality of sources disposed peripherally around said throat opening and controlling the angular direction of said spray to eliminate local hot zones and to thus increase the period of combustion so as to eliminate the formation of undesirable oxides in the products of combustion.
Claim 10
Independent Claim
85 words
The method of controlling the flame in a fuel burner having a burner adapted to produce a cone of flame in a throat opening in a furnace wall which comprises directing a liquid spray onto said cone of flame from a plurality of sources disposed peripherally around said throat opening and controlling the angular direction of said spray to eliminate local hot zones and to thus increase the period of combustion so as to eliminate the formation of undesirable oxides in the products of combustion.
Claim 11
Dependent Claim
29 words
The method set forth in claim 8 in which a gas is projected onto said cone of flame from a plurality of external sources disposed around said throat opening.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |