US3853457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flare
Assignee: BP PLC
•
Filing: 1973-05-25
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Granted: 1974-12-10
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Expires: 1993-05-25
Abstract
Abstract A flare suitable for use for the disposal of combustible waste gases from marine platforms comprises a fuel chamber having tubes passing through it. The interior of the fuel chamber is connected to the bores of the tubes only by Coanda nozzles. During use of the flare, fuel from the fuel chamber passes via the Coanda nozzles into the tubes and thus surrounding air is entrained into the fuel flow. The combustible mixture thus formed is burned off above the tubes.
Inventors
- 👤 D Desty
- 👤 C Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:41
CPC Classifications
E; E21; E21B; E21B41/00; E21B41/005; E21B41/0071; F; F23; F23G; F23G7/00; F23G7/06; F23G7/08; Y; Y10; Y10S; Y10S239/00; Y10S239/07
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
172 words
A burner element, comprising: a fuel chamber through which pass a plurality of first tubes, the shape of said first tubes being cylindrical and being arranged with their axes parallel to one another; means for reducing gas velocity comprising second tubes of increasing cross-sectional area attached to the exit of each of said plurality of first tubes; said second tubes of increasing cross-sectional area each comprising a diffuser cone having a throat diameter of 1 inch to 3 inches and a length of 6 inches to 18 inches; the interior of said fuel chamber being connected to the bores of each of said plurality of first tubes only by means of Coanda nozzles so that, in use, fuel passes from said fuel chamber into said first tubes via the Coanda nozzles thus entraining surrounding air into the fuel flow, said fuel and air thereafter passing through each of said first tube exits and said second tubes of increasing cross-sectional area to a combustion zone to thereby produce a single, self-stabilizing, horizontal flame.
Claim 2
Dependent Claim
172 words
A burner element, comprising: a fuel chamber through which pass a plurality of first tubes, the shape of said first tubes being cylindrical and being arranged with their axes parallel to one another; means for reducing gas velocity comprising second tubes of increasing cross-sectional area attached to the exit of each of said plurality of first tubes; said second tubes of increasing cross-sectional area each comprising a diffuser cone having a throat diameter of 1 inch to 3 inches and a length of 6 inches to 18 inches; the interior of said fuel chamber being connected to the bores of each of said plurality of first tubes only by means of Coanda nozzles so that, in use, fuel passes from said fuel chamber into said first tubes via the Coanda nozzles thus entraining surrounding air into the fuel flow, said fuel and air thereafter passing through each of said first tube exits and said second tubes of increasing cross-sectional area to a combustion zone to thereby produce a single, self-stabilizing, horizontal flame.
Claim 3
Dependent Claim
109 words
A burner element comprising a fuel chamber through which pass a plurality of tubes in an array, the centres of the tubes being not greater than five tube diameters apart; means for reducing gas velocity attached to the exit of the tubes, the interior of the fuel chamber being connected to the bores of the tubes only by means of Coanda nozzles so that, in use, fuel passes from the fuel chamber into the tubes via the Coanda nozzles thus entraining surrounding air into the fuel flow, the fuel and air then passing through the tube exits to a combustion zone to thereby produce a single, self-stabilizing, horizontal flame.
Claim 4
Dependent Claim
109 words
A burner element comprising a fuel chamber through which pass a plurality of tubes in an array, the centres of the tubes being not greater than five tube diameters apart; means for reducing gas velocity attached to the exit of the tubes, the interior of the fuel chamber being connected to the bores of the tubes only by means of Coanda nozzles so that, in use, fuel passes from the fuel chamber into the tubes via the Coanda nozzles thus entraining surrounding air into the fuel flow, the fuel and air then passing through the tube exits to a combustion zone to thereby produce a single, self-stabilizing, horizontal flame.
Claim 5
Dependent Claim
112 words
A burner element comprising a fuel chamber through which pass a plurality of tubes; means for reducing gas velocity attached to the exit of the tubes, the interior of the fuel chamber being connected to the bores of the tubes only by means of Coanda nozzles so that, in use, fuel passes from the fuel chamber into the tubes via the Coanda nozzles thus entraining surrounding air into the fuel flow, the fuel and air then passing through the tube exits to a combustion zone to thereby produce a single, self-stabilizing horizontal flame; said burner element being of modular construction and formed from six triangular modules in the shape of a hexagon.
Claim 6
Dependent Claim
112 words
A burner element comprising a fuel chamber through which pass a plurality of tubes; means for reducing gas velocity attached to the exit of the tubes, the interior of the fuel chamber being connected to the bores of the tubes only by means of Coanda nozzles so that, in use, fuel passes from the fuel chamber into the tubes via the Coanda nozzles thus entraining surrounding air into the fuel flow, the fuel and air then passing through the tube exits to a combustion zone to thereby produce a single, self-stabilizing horizontal flame; said burner element being of modular construction and formed from six triangular modules in the shape of a hexagon.
Claim 7
Dependent Claim
177 words
A burner element, comprising; a fuel chamber through which pass a plurality of first tubes, the shape of said first tubes being cylindrical and being arranged with their axes parallel to one another; means for reducing gas velocity comprising second tubes of increasing cross-sectional area attached to the exit of each of said plurality of first tubes; said second tubes of increasing cross-sectional area each comprising a diffuser cone having an included angle of 3*-10* and an exit mouth diameter from one and one-half to two times greater than its throat diameter; the interior of said fuel chamber being connected to the bores of each of said plurality of first tubes only by means of Coanda nozzles so that, in use, fuel passes from said fuel chamber into said first tubes via the Coanda nozzles thus entraining surrounding air into the fuel flow, said fuel and said air thereafter passing through each of said first tube exits and said second tubes of increasing cross-sectional area to a combustion zone to thereby producE a single, self-stabilizing, horizontal flame.
Claim 8
Dependent Claim
177 words
A burner element, comprising; a fuel chamber through which pass a plurality of first tubes, the shape of said first tubes being cylindrical and being arranged with their axes parallel to one another; means for reducing gas velocity comprising second tubes of increasing cross-sectional area attached to the exit of each of said plurality of first tubes; said second tubes of increasing cross-sectional area each comprising a diffuser cone having an included angle of 3*-10* and an exit mouth diameter from one and one-half to two times greater than its throat diameter; the interior of said fuel chamber being connected to the bores of each of said plurality of first tubes only by means of Coanda nozzles so that, in use, fuel passes from said fuel chamber into said first tubes via the Coanda nozzles thus entraining surrounding air into the fuel flow, said fuel and said air thereafter passing through each of said first tube exits and said second tubes of increasing cross-sectional area to a combustion zone to thereby producE a single, self-stabilizing, horizontal flame.
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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |