US3645701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reformer furnace
Assignee: Lummus Technology LLC
•
Filing: 1970-02-02
•
Granted: 1972-02-29
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Expires: 1990-02-02
Abstract
Abstract Reformer furnace having a plurality of tubes in the radiant section thereof, the lower portion of the tubes having a reformer catalyst and the upper portion being free of catalyst. A plug is positioned in the upper portion to provide a restricted flow passage for a steam-hydrocarbon mixture introduced into the tubes and the plug includes means for evenly distributing the mixture from the restricted flow passage over the catalyst.
Inventors
- 👤 Ira N Banchik
- 👤 Morgan C Sze
- 👤 Maldwin J Maddock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:15
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/02; B01J8/06; B01J8/062; C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/384
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
20 words
The reformer furnace as defined in claim 1 wherein the second interior portion of the tubes is coated with aluminum.
Claim 2
Dependent Claim
17 words
The reformer furnace as defined in claim 2 wherein the plug is formed or coated with aluminum.
Claim 3
Dependent Claim
124 words
The reformer furnace as defined in claim 1 wherein said plug includes as the distributing means: a closed chamber in the portion of the plug adjacent said catalyst, a first plurality of orifices in the portion of the plug defining the peripheral wall of said chamber for placing said chamber in fluid flow communication with the restricted passage and a second plurality of orifices in the portion of the plug defining the bottom wall of said chamber adjacent the catalyst for placing the chamber in fluid flow communication with the catalyst, whereby steam and hydrocarbon flow from the restricted passage into the chamber through the first plurality of orifices and from the chamber is distributed to the catalyst through the second plurality of orifices.
Claim 4
Dependent Claim
33 words
The reformer furnace as defined in claim 4 wherein said plug is hollow and includes an interior dividing wall, said interior dividing wall defining a wall of said chamber opposite said bottom wall.
Claim 5
Dependent Claim
23 words
The reformer furnace as defined in claim 5 wherein said plug further includes means for guiding and positioning the plug in the tube.
Claim 6
Dependent Claim
17 words
The reformer furnace as defined in claim 4 wherein the plug is axially aligned with the tube.
References Cited (Backward Citations)
US1692811A
Cited
US2356700A
Cited
US2708621A
Cited
US2952527A
Cited
US3154385A
Cited
US3334971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |