US4406610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and burner for the partial combustion of a liquid or gaseous fuel
Assignee: Shell USA Inc
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Filing: 1978-09-05
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Granted: 1983-09-27
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Expires: 1998-09-05
Abstract
Abstract An improved process for the partial combustion of a liquid or gaseous fuel is disclosed, the process being characterized by the introduction of steam into the combustion reactor through the interior of a burner gun, the steam being introduced as a jet which rotates about its axis and diverges in the form of a cone. Apparatus for carrying out the process is also disclosed.
Inventors
- 👤 Pius E. M. Duijvestijn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:44
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/20; F23L; F23L7/00; F23L7/002; F23L7/005
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
95 words
In a process for the partial combustion of a liquid or gaseous fuel in a reactor lined with refractory material, wherein said fuel is introduced into the reactor via a burner gun of a burner as a hollow diverging jet, and an oxygen-containing gas is introduced into the reactor as a jacket around the burner gun, the improvement comprising introducing steam into the reactor through the burner gun as a central rotating and diverging steam jet interior to said fuel jet, the steam jet rotating about an axis coincident with the axis of the burner.
Claim 2
Dependent Claim
95 words
In a process for the partial combustion of a liquid or gaseous fuel in a reactor lined with refractory material, wherein said fuel is introduced into the reactor via a burner gun of a burner as a hollow diverging jet, and an oxygen-containing gas is introduced into the reactor as a jacket around the burner gun, the improvement comprising introducing steam into the reactor through the burner gun as a central rotating and diverging steam jet interior to said fuel jet, the steam jet rotating about an axis coincident with the axis of the burner.
Claim 3
Dependent Claim
26 words
The process of claim 1 in which the steam jet diverges in the form of a cone with a top angle of from 30° to 90°.
Claim 4
Dependent Claim
12 words
The process of claim 2 in which the steam jet is hollow.
Claim 5
Dependent Claim
26 words
The process of claim 3 wherein a burner with a straight burner gun is used, and the oxygen-containing gas has an axial and a tangential momentum.
Claim 6
Dependent Claim
12 words
The process of claim 4 in which a gaseous fuel is used.
Claim 7
Dependent Claim
93 words
A burner for the partial combustion of a liquid or gaseous fuel comprising a burner gun having means for the ejection of a fuel, means surrounding said burner gun for providing an oxygen-containing gas as a jacket around the burner gun, and means for the ejection of a central steam jet mounted at the combustion end of the burner gun and interior to the means for the ejection of a fuel, said means for the ejection of a central steam jet comprising means for providing the steam jet with axial and tangential momentum.
Claim 8
Dependent Claim
93 words
A burner for the partial combustion of a liquid or gaseous fuel comprising a burner gun having means for the ejection of a fuel, means surrounding said burner gun for providing an oxygen-containing gas as a jacket around the burner gun, and means for the ejection of a central steam jet mounted at the combustion end of the burner gun and interior to the means for the ejection of a fuel, said means for the ejection of a central steam jet comprising means for providing the steam jet with axial and tangential momentum.
Claim 9
Dependent Claim
75 words
The burner according to claim 6 wherein the means for the ejection of a central steam jet comprises a plug having a bore, the bore being substantially tapering or funnel-shaped and diverging from the bottom of the bore to the bore's top located at the burner gun combustion end, and in which said bore, near the bottom, tangential ducts have their outlets, the ducts being connected with a central hollow space in the burner gun.
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) | 1986-09-26 | 1987-03-28 | 1987-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-26 | 1991-03-28 | 1991-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-26 | 1995-03-28 | 1995-09-27 | $7700.00 | Window Closed / Lapsed |