US4523529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and burner for the partial combustion of solid fuel
Assignee: Shell USA Inc
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Filing: 1983-10-06
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Granted: 1985-06-18
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Expires: 2003-10-06
Abstract
Abstract A process and burner for the partial combustion of a finely divided solid fuel, wherein coal and oxygen is supplied to a reactor space via a central coal passage and a plurality of inwardly inclined oxygen outlet passages supply oxygen. Each oxygen jet is surrounded by a shield of a moderate gas from an annular passage, preventing premature contact of free oxygen with reactor gas and the premature escape of solid fuel, broken-up by the oxygen jet from the break-up zone.
Inventors
- 👤 Ian Poll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:53
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/46; C10J3/48; C10J3/50; C10J3/506; C10J2200/00; C10J2200/15; C10J2200/152; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/0916; C10J2300/092; C10J2300/093; C10J2300/0943; C10J2300/0946; C10J2300/0953; C10J2300/0956; C10J2300/0959; C10J2300/0973; C10J2300/0976; F; F23; F23D; F23D2900/00; F23D2900/00006
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
111 words
A burner for the partial combustion of a finely divided solid fuel comprising: a burner housing having a central passageway terminating in a central fuel outlet; a plurality of oxygen outlets substantially equal spaced and surrounding said fuel outlet; a plurality of annular outlets, one said annular outlet surrounding each of said oxygen outlets, said annular outlets being coaxial with said oxygen outlets and both said oxygen and annular outlets being inclined at an angle to the axis of the fuel outlet; a first conduit means, said first conduit means being coupled to said oxygen outlets; and a second conduit means, said second conduit means being coupled to said annular outlets.
Claim 2
Dependent Claim
111 words
A burner for the partial combustion of a finely divided solid fuel comprising: a burner housing having a central passageway terminating in a central fuel outlet; a plurality of oxygen outlets substantially equal spaced and surrounding said fuel outlet; a plurality of annular outlets, one said annular outlet surrounding each of said oxygen outlets, said annular outlets being coaxial with said oxygen outlets and both said oxygen and annular outlets being inclined at an angle to the axis of the fuel outlet; a first conduit means, said first conduit means being coupled to said oxygen outlets; and a second conduit means, said second conduit means being coupled to said annular outlets.
Claim 3
Dependent Claim
30 words
The burner as claimed in claim 1, wherein the angle of inclination with the central passage of the outlet passages is in the range of from 20 through 70 degrees.
Claim 4
Dependent Claim
30 words
The burner as claimed in claim 1, wherein the angle of inclination with the central passage of the outlet passages is in the range of from 20 through 60 degrees.
Claim 5
Dependent Claim
24 words
The burner as claimed in claims 1, 2 or 3, wherein the first conduit means and the central passage have substantially coinciding longitudinal axes.
Claim 6
Dependent Claim
24 words
The burner as claimed in claims 1, 2 or 3, wherein the second conduit means and the central passage have substantially coinciding longitudinal axes.
References Cited (Backward Citations)
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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) | 1988-06-17 | 1988-12-17 | 1989-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-17 | 1992-12-17 | 1993-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-17 | 1996-12-17 | 1997-06-18 | $7700.00 | Window Closed / Lapsed |