US3863359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory gas distributor for a fluidized solids reactor
Assignee: Dresser Industries Inc
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Filing: 1973-10-29
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Granted: 1975-02-04
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Expires: 1993-10-29
Abstract
Abstract A gas distributor or grid for a fluidized solids reactor having a centrally located cavity or air space, with a second air space lying between the outer periphery of the gas distributor and the reactor wall to accommodate for expansion and contraction of the grid during service.
Inventors
- 👤 John M Grega
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:00
CPC Classifications
F; F26; F26B; F26B3/00; F26B3/02; F26B3/06; F26B3/08; F26B3/082; B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/44
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
100 words
In a fluidized solids reactor having sidewalls lined with refractories, a perforated gas distributor or grid having an upper and lower surface and composed of a plurality of concentric courses of refractory brick, the outer periphery of the grid being supported on an oblique face of skewbrick embedded in the sidewalls of the reactor, air space located between the inner periphery of the sidewalls and outer periphery of the grid and an air space in the central portion of the grid formed from the innermost course of refractory brick to allow for expansion and contraction of the grid during service.
Claim 2
Dependent Claim
100 words
In a fluidized solids reactor having sidewalls lined with refractories, a perforated gas distributor or grid having an upper and lower surface and composed of a plurality of concentric courses of refractory brick, the outer periphery of the grid being supported on an oblique face of skewbrick embedded in the sidewalls of the reactor, air space located between the inner periphery of the sidewalls and outer periphery of the grid and an air space in the central portion of the grid formed from the innermost course of refractory brick to allow for expansion and contraction of the grid during service.
Claim 3
Dependent Claim
22 words
The reactor of claim 1 in which the central air space is continuous between the upper and lower surfaces of the grid.
Claim 4
Dependent Claim
22 words
The reactor of claim 1 in which the central air space is discontinuOus between the upper and lower surfaces of the grid.
Claim 5
Dependent Claim
26 words
The reactor of claim 2 in which the central air space is closed on the upper surface of the grid to provide a dead air space.
Claim 6
Dependent Claim
20 words
The reactor of claim 1 in which the grid has a relatively flat upper surface and a curved lower surface.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |