US3779689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for non-polluting combustion of waste gases
Assignee: ZINC J CO
•
Filing: 1972-01-10
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Granted: 1973-12-18
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Expires: 1992-01-10
Abstract
Abstract A non-polluting waste-gas disposal system for processing plants or other operation subject to variable quantities of waste gas for disposal. The system includes a low-level burner normally adapted to handle the usual volumes of plant waste gas, required to be disposed, without visible flame, smoke or noise pollution. An elevated flare can be used in combination to consume gases in excess of the normal capacity of the low-level flare.
Inventors
- 👤 J Corble
- 👤 H Koons
- 👤 R Schwartz
- 👤 H Glomm
- 👤 R Reed
- 👤 Zink J Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:52
CPC Classifications
F; F23; F23G; F23G7/00; F23G7/06; F23G7/08
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
237 words
In a flare system for variable quantities of waste gas having, a vertical flare stack of substantially unrestricted inner horizontal cross-sectional area along its effective upper height; at least one burner area located about the lower portion of said stack the improvement in said burner area comprising: A. at least one burner nozzle oriented to direct said waste gas into said stack, said nozzle comprising: a gas supply conduit; a coaxial air baffle plate positioned forwardly of said conduit; said plate having a plurality of perforations thereacross; said gas supPly conduit having a converging portion at its forward end to a central opening; and a plurality of perforations across said converging portion such that a portion of said gas is diverted toward the back side of the said plate; B. an opening around said nozzle to provide passage of draft created combustion supporting air from the outside to the inside of said stack, the total cross sectional area of said opening for all burner areas not more than 90% of the said stack discharge area, C. means to supply said waste gas to said nozzle at any pressure greater than atmospheric pressure; D. means to cause sufficient mixing of said waste gas and air adjacent to and forwardly of said nozzle to cause complete and stable combustion when ignited under any waste gas flow quantity or combustion space temperature, and E. means to ignite said gas-air mixture.
Claim 2
Dependent Claim
237 words
In a flare system for variable quantities of waste gas having, a vertical flare stack of substantially unrestricted inner horizontal cross-sectional area along its effective upper height; at least one burner area located about the lower portion of said stack the improvement in said burner area comprising: A. at least one burner nozzle oriented to direct said waste gas into said stack, said nozzle comprising: a gas supply conduit; a coaxial air baffle plate positioned forwardly of said conduit; said plate having a plurality of perforations thereacross; said gas supPly conduit having a converging portion at its forward end to a central opening; and a plurality of perforations across said converging portion such that a portion of said gas is diverted toward the back side of the said plate; B. an opening around said nozzle to provide passage of draft created combustion supporting air from the outside to the inside of said stack, the total cross sectional area of said opening for all burner areas not more than 90% of the said stack discharge area, C. means to supply said waste gas to said nozzle at any pressure greater than atmospheric pressure; D. means to cause sufficient mixing of said waste gas and air adjacent to and forwardly of said nozzle to cause complete and stable combustion when ignited under any waste gas flow quantity or combustion space temperature, and E. means to ignite said gas-air mixture.
Claim 3
Dependent Claim
25 words
A flare system of claim 1 including, with each burner area, means to inject steam into and with said waste gas supply to said nozzle.
Claim 4
Dependent Claim
28 words
A flare system according to claim 1 including a plurality of burner areas wherein said openings are essentially vertical with a plurality of vertically spaced burner nozzles therein.
Claim 5
Dependent Claim
51 words
A flare system according to claim 1 including: means to sense a pressure or flow condition of said waste gas; means responsive to said condition to supply said waste gas to only that number of burners proportional to the quantity of said waste gas necessary to effect complete and stable combustion.
Claim 6
Dependent Claim
42 words
A flare system according to claim 4 including in combination: a second flare system, means to supply to said second flare system waste gas in excess of that capable of being efficiently and completely burned in said first ground level flare system.
Claim 7
Dependent Claim
39 words
A system according to claim 4 including in combination: an elevated flare stack; means to supply said elevated flare stack waste gas in excess of that capable of being efficiently and completely burned in said ground level flare system.
Claim 8
Dependent Claim
42 words
A flare system of claim 1 including: a screen extending outwardly from each burner area and extending vertically at least the length of said area to abate noise and sight of said flame from a normal ground position away from said stack.
Claim 9
Dependent Claim
13 words
A system of claim 7 wherein said screen is a set of louvers.
Claim 10
Dependent Claim
10 words
A system of claim 8 wherein said louvers are adjustable.
Claim 11
Dependent Claim
44 words
A flare system of claim 1 including: an air plenum encircling said lower periphery of said stack, said plenum comprising a screen to interrupt the wind or air force to said burner areas such that the air pressure within said plenum is substantially constant.
Claim 12
Dependent Claim
20 words
A system of claim 10 including: means to close the top of said plenum between said screen and said stack.
Claim 13
Dependent Claim
23 words
A flare system of claim 10 wherein said screen comprises a plurality of overlapping panels alternately spaced vertically and horizontally from each other.
Claim 14
Dependent Claim
40 words
A flare system of claim 1 wherein said flare stack includes, at the top 10-15 percent of said height, a restriction in said inner cross-sectional area to produce substantially maximum flow velocity at the point of discharge from said stack.
Claim 15
Dependent Claim
26 words
A flare system of claim 13 wherein said restriction terminates in a convex arcuate section the radius of which centers along said top of said stack.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |