US3797991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flare burner
Assignee: COMBUSTION UNLIMITED INC US
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Filing: 1973-01-08
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Granted: 1974-03-19
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Expires: 1993-01-08
Abstract
Abstract A flare burner for waste combustible gases from oil refineries and the like is disclosed which includes a stack for the gases with central air duct and steam pipe, the stack having outwardly extending vanes with gas delivery slots, the tops of the vanes being angularly disposed in a plane with respect to radial lines through the center of the stack for a swirling action of the burning gas. The stack has a closure plate with flame retention openings. An interior back flow preventing diode can be employed and also an optional steam ring with steam delivery pipes along the vanes and with angularly disposed tips to enhance the swirling action of the burning gas. Ignitors and pilots are shown.
Inventors
- 👤 J Straitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:20
CPC Classifications
F; F23; F23G; F23G7/00; F23G7/06; F23G7/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
90 words
A flare stack burner for waste gas comprising a waste gas delivery pipe, a plurality of outwardly extending hollow tilted vanes at the upper end of said pipe with spaces therebetween and having upwardly facing gas delivery slots connected to said gas delivery pipe for discharge of waste gas for burning, said vanes having their slots disposed at an angle to a radius through the vertical longitudinal axis of said pipe, and means associated with said pipe for inducing air flow for combustion of waste gas delivered through said pipe.
Claim 2
Dependent Claim
90 words
A flare stack burner for waste gas comprising a waste gas delivery pipe, a plurality of outwardly extending hollow tilted vanes at the upper end of said pipe with spaces therebetween and having upwardly facing gas delivery slots connected to said gas delivery pipe for discharge of waste gas for burning, said vanes having their slots disposed at an angle to a radius through the vertical longitudinal axis of said pipe, and means associated with said pipe for inducing air flow for combustion of waste gas delivered through said pipe.
Claim 3
Dependent Claim
25 words
A flare stack burner as defined in claim 1 in which said pipe has an air delivery pipe in spaced relation in the interior thereof.
Claim 4
Dependent Claim
38 words
A flare stack burner as defined in claim 2 in which said means for inducing air flow includes a pipe within said air delivery pipe delivering air flow inducing fluid under pressure upwardly in said air delivery pipe.
Claim 5
Dependent Claim
23 words
A flare stack burner as defined in claim 3 in which said air flow inducing pipe is connected to a source of steam.
Claim 6
Dependent Claim
29 words
A flare stack burner as defined in claim 2 in which said waste gas delivery pipe and said air delivery pipe have a closure provided with flame retention ports.
Claim 7
Dependent Claim
32 words
A flare stack burner as defined in claim 1 in which said waste gas delivery pipe has a fluidic diode therein permitting upward flow in said pipe and obstructing downward flow therein.
Claim 8
Dependent Claim
40 words
A flare stack burner as defined in claim 1 in which said vanes have air flow inducing pipes therealong, and said pipes have openings for delivery of flow inducing pressure fluid to induce swirling of burning gas from said slots.
Claim 9
Dependent Claim
48 words
A flare stack as defined in claim 1 which said means for inducing air flow comprise air flow inducing pipes along said vanes, and said pipes along their lengths have upwardly facing openings for inducing upward air flow between said vanes for contact with gas from said slots.
Claim 10
Dependent Claim
23 words
A flare stack burner as defined in claim 8 in which said air flow inducing pipes are connected to a source of steam.
Claim 11
Dependent Claim
45 words
A flare stack burner as defined in claim 3 in which said means for inducing air flow further comprises air flow inducing pipes extending along said vanes and having discharge openings for discharge of air flow inducing fluid into contact with gas from said slots.
References Cited (Backward Citations)
US3547567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |