Patent US2097070A successfully refreshed from Google Patents.
US3901445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas burner - lance construction
Assignee: Pullman Inc
•
Filing: 1974-11-08
•
Granted: 1975-08-26
•
Expires: 1994-11-08
Abstract
Abstract A gaseous burner-lance construction for burning a gaseous fuel with air or pure oxygen gas to generate heat in an industrial furnace including a specially constructed lance tip which improves the degree of mixing of the gaseous fuel and the gaseous oxidant issuing from the tip for more complete combustion, the tip having an outer concentric conduit conveying the gaseous fuel and an inner concentric conduit within the outer conduit conveying the gaseous oxidant and a gas separating partition wall structure connecting each of the conduits, said partition wall structure being deeply corrugated to provide for a plurality of fingers or lobes defining ridges communicating with the oxidant and grooves communicating with the gaseous fuel. In one embodiment the partition wall construction is an outwardly and downwardly diverging multi-lobed cone member communicating with each of the conduits and in a second embodiment a cylinder member is corrugated to provide for vertically extending fingers or ridges and in a third embodiment there is provided a partition wall construction in each of a plurality of circumferentially spaced orifices or ports on a single tip. In all of the three embodiments a sealing arrangement is provided to prevent intermingling of the gaseous fuel and the oxidant within the lance tip and yet to allow intermingling of the gases as they issue from the tip.
Inventors
- 👤 Yi-Chung Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:33
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/72; F23D14/78; C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/4606; F23D14/20; F23D14/22; F23D14/32
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
140 words
In a burner-lance for burning a fuel-gas with a gaseous oxidant in a furnace having a substantially elongated lance barrel section and a lance tip section, said lance tip section comprising: a port means in the end thereof, a corrugated partition structurE within said port means, an inner tube connecting with said partition structure and defining a first gaseous passage, an outer tube concentric about said inner tube and defining a second gas passage, and said corrugated partition structure having a deeply corrugated vertically extending partition wall formed into an upright tubular member and defining a plurality of alternating depp upright hollow ridge portions and open groove portions with the ridge portions communicating with the first passage and the grove portions communicating with second passage, whereby alternating plume layer gases can mix with one another outwardly of the port means.
Claim 2
Dependent Claim
140 words
In a burner-lance for burning a fuel-gas with a gaseous oxidant in a furnace having a substantially elongated lance barrel section and a lance tip section, said lance tip section comprising: a port means in the end thereof, a corrugated partition structurE within said port means, an inner tube connecting with said partition structure and defining a first gaseous passage, an outer tube concentric about said inner tube and defining a second gas passage, and said corrugated partition structure having a deeply corrugated vertically extending partition wall formed into an upright tubular member and defining a plurality of alternating depp upright hollow ridge portions and open groove portions with the ridge portions communicating with the first passage and the grove portions communicating with second passage, whereby alternating plume layer gases can mix with one another outwardly of the port means.
Claim 3
Dependent Claim
62 words
The invention according to claim 1, and said ridge portions and groove portions having alternating ports extending respectively into said second passage and said first passage, and said partition structure having sealing means on the partition wall preventing mixing of the first gas with the second gas between the alternating ports of the ridge portions and groove portions within the port means.
Claim 4
Dependent Claim
41 words
The invention according to claim 1, and said partition wall comprising an annular upright cone-shaped member having its upper narrowest part connecting with the inner tube and its lowest widest part being adjacent said lower end of said concentric outer tube.
Claim 5
Dependent Claim
109 words
The invention according to claim 1, and said ridge portions and groove portions having alternating ports extending respectively into said second passage and said first passage, said partition structure having sealing means on the partition wall preventing mixing of the first gas with the second gas between the alternating ports of the ridge portions and groove portions within the port means, said partition wall comprising an annular upright cone-shaped member having its upper narrowest part connecting with the inner tube and its lowest widest part being adjacent said lower end of said concentric outer tube, and including the downward sloping portion and said sealing means of the ridge portions.
Claim 6
Dependent Claim
59 words
The invention according to claim 1, and said partition wall comprising an annular upright cone-shaped member having its upper narrowest part connecting with the inner tube and its lowest widest part being adjacent said lower end of said concentric outer tube, and said lowest widest part of said cone-shaped member touching the inner wall of said outer concentric tube.
Claim 7
Dependent Claim
22 words
The invention according to claim 1, and said first gas passage being oxygen bearing and said second gas passage being fuel bearing.
Claim 8
Dependent Claim
13 words
The invention according to claim 6, and said fuel being a hydrocarbon gas.
Claim 9
Dependent Claim
41 words
The invention according to claim 1, and said barrel section having an inner pipe for carrying a first gas connecting with the inner tube and having an outer concentric pipe for carrying a second gas connecting with said outer concentric tube.
Claim 10
Dependent Claim
35 words
The invention according to claim 1, and said ridge portions forming a curved spiral shape for giving gyrating motion to gases exiting from the tip section to increase mixing of the first and second gases.
Claim 11
Dependent Claim
14 words
The invention according to claim 1, and said port means being rectangular in shape.
Claim 12
Dependent Claim
14 words
The invention according to claim 1, and said port means being triangular in shape.
Claim 13
Dependent Claim
14 words
The invention according to claim 1, and said port means being oval in shape.
Claim 14
Dependent Claim
14 words
The invention according to claim 1, and said port means being circular in shape.
Claim 15
Dependent Claim
14 words
The invention according to claim 1, and said port means being crescent in shape.
Claim 16
Dependent Claim
63 words
The invention according to claim 1, and said port means including a plurality of circumferentially spaced ports on the outer peripheral portion of the tip section, a corrugated partition structure being in each port and communicating with the inner tube and the outer tube, and each port having a passageway communicating with the hollow interior of the ridge portions anD the inner tube.
Claim 17
Dependent Claim
213 words
In a burner-lance for burning a fuel-gas with a gaseous oxidant in a furnace having a substantially elongated lance barrel section and a lance tip section, said lance tip section comprising: a port means in the end thereof, a corrugated partition structure within said port means, an inner tube connecting with said partition structure and defining a first gaseous passage, an outer tube concentric about said inner tube and defining a second gas passage, said corrugated partition structure having a deeply corrugated vertically extending partition wall formed into an upright tubular member and defining a plurality of alternating deep upright hollow ridge portions and open groove portions with the ridge portions communicating with the first passage and the groove portions communicating with second passage, whereby alternating plume layer gases can mix with one another outwardly of the port means, said partition wall comprising an annular upright cone-shaped member having its upper narrowest part connecting with the inner tube and its lowest widest part being adjacent said lower end of said concentric outer tube, and said cone-shaped member including sealer means for the portions of the ridge portions and groove portions extending respectively into the outer tube and inner tube to prevent commingling of the first gases and second gases within the tip section.
Claim 18
Dependent Claim
213 words
In a burner-lance for burning a fuel-gas with a gaseous oxidant in a furnace having a substantially elongated lance barrel section and a lance tip section, said lance tip section comprising: a port means in the end thereof, a corrugated partition structure within said port means, an inner tube connecting with said partition structure and defining a first gaseous passage, an outer tube concentric about said inner tube and defining a second gas passage, said corrugated partition structure having a deeply corrugated vertically extending partition wall formed into an upright tubular member and defining a plurality of alternating deep upright hollow ridge portions and open groove portions with the ridge portions communicating with the first passage and the groove portions communicating with second passage, whereby alternating plume layer gases can mix with one another outwardly of the port means, said partition wall comprising an annular upright cone-shaped member having its upper narrowest part connecting with the inner tube and its lowest widest part being adjacent said lower end of said concentric outer tube, and said cone-shaped member including sealer means for the portions of the ridge portions and groove portions extending respectively into the outer tube and inner tube to prevent commingling of the first gases and second gases within the tip section.
Claim 19
Dependent Claim
160 words
In a burner-lance for burning a fuel-gas with a gaseous oxidant in a furnace having a substantially elongated lance barrel section and a lance tip section, said lance tip section comprising: a port means in the end thereof, a corrugated partition structure within said port means, an inner tube connecting with said partition structure and defining a first gaseous passage, an outer tube concentric about said inner tube and defining a second gas passage, said corrugated partition structure having a deeply corrugated vertically extending partition wall formed into an upright tubular member and defining a plurality of alternating deep upright hollow ridge portions and open groove portions with the ridge portions communicating with the first passage and the groove portions communicating with second passage, whereby alternating plume layer gases can mix with one another outwardly of the port means, and said partition wall including a generally corrugated annularly shaped member having said ridge portions and groove portions forming vertical walls.
Claim 20
Dependent Claim
160 words
In a burner-lance for burning a fuel-gas with a gaseous oxidant in a furnace having a substantially elongated lance barrel section and a lance tip section, said lance tip section comprising: a port means in the end thereof, a corrugated partition structure within said port means, an inner tube connecting with said partition structure and defining a first gaseous passage, an outer tube concentric about said inner tube and defining a second gas passage, said corrugated partition structure having a deeply corrugated vertically extending partition wall formed into an upright tubular member and defining a plurality of alternating deep upright hollow ridge portions and open groove portions with the ridge portions communicating with the first passage and the groove portions communicating with second passage, whereby alternating plume layer gases can mix with one another outwardly of the port means, and said partition wall including a generally corrugated annularly shaped member having said ridge portions and groove portions forming vertical walls.
Claim 21
Dependent Claim
72 words
The invention according to claim 17, and said partition structure including sealer means extending over the parts of the ridge portions extending into the outer concentric tube to prevent gas in the ridge portions from passing into the outer concentric tube, and said sealer means extending over the parts of the groove portions extending into the inner tube to prevent the gas in the groove portions from passing into the inner tube.
Claim 22
Dependent Claim
47 words
The invention according to claim 18, and said sealer means including a top sealer plate on said annularly shaped member, said plate having alternating oppositely directed tab portions alternately covering the ridge portions extending into the outer tube and the groove portions extending into the inner tube.
Claim 23
Dependent Claim
16 words
The invention according to claim 17, and said annularly shaped member being generally cylindrical in shape.
Claim 24
Dependent Claim
178 words
In a burner-lance for burning a fuel-gas with a gaseous oxidant in a furnace having a substantially elongated lance barrel section and a lance tip section, said lance tip section comprising: a port means in the end thereof, a corrugated partition structure within said port means, an inner tube connecting with said partition structure and defining a first gaseous passage, an outer tube concentric about said inner tube and defining a second gas passage, said corrugated partition structure having a deeply corrugated vertically extending partition wall formed into an upright tuBular member and defining a plurality of alternating deep upright hollow ridge portions and open groove portions with the ridge portions communicating with the first passage and the groove portions communicating with the second passage, whereby alternating plume layer gases can mix with one another outwardly of the port means, said port means including a plurality of circumferentially spaced ports on the outer peripheral portion of the tip section, and a corrugated partition structure being in each port and communicating with the inner tube and the outer tube.
Claim 25
Dependent Claim
178 words
In a burner-lance for burning a fuel-gas with a gaseous oxidant in a furnace having a substantially elongated lance barrel section and a lance tip section, said lance tip section comprising: a port means in the end thereof, a corrugated partition structure within said port means, an inner tube connecting with said partition structure and defining a first gaseous passage, an outer tube concentric about said inner tube and defining a second gas passage, said corrugated partition structure having a deeply corrugated vertically extending partition wall formed into an upright tuBular member and defining a plurality of alternating deep upright hollow ridge portions and open groove portions with the ridge portions communicating with the first passage and the groove portions communicating with the second passage, whereby alternating plume layer gases can mix with one another outwardly of the port means, said port means including a plurality of circumferentially spaced ports on the outer peripheral portion of the tip section, and a corrugated partition structure being in each port and communicating with the inner tube and the outer tube.
Claim 26
Dependent Claim
32 words
The invention according to claim 21, and said ridge portions and groove portions having cover parts sealing the ridge portions from the outer tube and the groove portions from the inner tube.
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |