US3933445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for preventing deposits on a gas inlet nozzle
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1973-10-15
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Granted: 1976-01-20
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Expires: 1993-10-15
Abstract
Abstract An oxidizing gas is injected through a nozzle into a bed of carbonaceous particles in a downward direction at an angle of declination at least as great as the angle of repose of the bed particles and at a gas inlet velocity of about 50 to 500 feet per second to supply the gas needed to fluidize the bed of carbonaceous particles.
Inventors
- 👤 David E. Mueller
- 👤 William J. Metrailer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:27
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/1818; C; C10; C10J; C10J3/00; C10J3/46; C10J3/48; C10J3/50; C10J3/503; C10J3/54; C10J3/56; C10J3/72; C10J3/78; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/093; C10J2300/0946; C10J2300/0953; C10J2300/0956; C10J2300/0959; C10J2300/0973; C10J2300/0976
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
92 words
In a gasification process wherein an oxygen-containing fluidizing gas is introduced through a nozzle into a bed of carbonaceous particles containing metallic contaminants, the improvement which comprises: preventing the formation of metallic ash deposits on said nozzle by introducing said oxygen-containing fluidizing gas into said bed as a downwardly directed stream at an angle of declination from a horizontal axis at least as great as the angle of repose of said bed particles and at an inlet velocity into said bed in the range of about 50 to 500 feet per second.
Claim 2
Dependent Claim
92 words
In a gasification process wherein an oxygen-containing fluidizing gas is introduced through a nozzle into a bed of carbonaceous particles containing metallic contaminants, the improvement which comprises: preventing the formation of metallic ash deposits on said nozzle by introducing said oxygen-containing fluidizing gas into said bed as a downwardly directed stream at an angle of declination from a horizontal axis at least as great as the angle of repose of said bed particles and at an inlet velocity into said bed in the range of about 50 to 500 feet per second.
Claim 3
Dependent Claim
25 words
The process of claim 1 wherein said inlet velocity of said oxygen-containing gas is in the range of about 100 to 350 feet per second.
Claim 4
Dependent Claim
33 words
The process of claim 1 wherein said downwardly directed nozzle is at an angle of declination of about 15° to 60° greater than the angle of repose of said carbonaceous bed of particles.
Claim 5
Dependent Claim
18 words
The process of claim 1 wherein said angle of declination ranges up to an angle of about 90°.
Claim 6
Dependent Claim
36 words
The process of claim 1 wherein said inlet velocity of said gas is greater than about 175 feet per second and said angle of declination is about 15° to 30° greater than said angle of repose.
Claim 7
Dependent Claim
18 words
The process of claim 1, wherein said oxygen-containing gas comprises a mixture of steam and an oxidizing gas.
Claim 8
Dependent Claim
96 words
In a gasification process wherein an oxidizing fluidizing gas is introduced into a bed of carbonaceous particles containing metallic impurities through a nozzle positioned in said bed, the improvement which comprises: preventing the formation of metallic ash deposits on said nozzle by introducing said fluidizing gas into said bed through a downwardly directed nozzle at an angle of declination from a horizontal axis at least as great as the angle of repose of said bed particles and at a gas exit velocity from said nozzle in the range of about 50 to 500 feet per second.
Claim 9
Dependent Claim
96 words
In a gasification process wherein an oxidizing fluidizing gas is introduced into a bed of carbonaceous particles containing metallic impurities through a nozzle positioned in said bed, the improvement which comprises: preventing the formation of metallic ash deposits on said nozzle by introducing said fluidizing gas into said bed through a downwardly directed nozzle at an angle of declination from a horizontal axis at least as great as the angle of repose of said bed particles and at a gas exit velocity from said nozzle in the range of about 50 to 500 feet per second.
References Cited (Backward Citations)
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Cited
US2683657A
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US3040439A
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US2994659A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |