US3746515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two stage high temperature shift reactor
Assignee: Lummus Technology LLC
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Filing: 1971-10-13
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Granted: 1973-07-17
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Expires: 1991-10-13
Abstract
Abstract A HIGH-TEMPERATURE HIGH-PRESSURE REACTOR VESSEL, SUCH AS A SHIFT REACTOR FOR SYNTHESIS GAS. A VERTICAL SHELL IS PROVIDED WITH A FIRST STAGE CATALYST BED THEREIN DISPOSED ABOVVE A QUENCH CHAMBER AND BELOW A SECOND STAGE CATALYST BED. THE GAS IS CONDUCTED DOWNWARD IN SERIES THROUGH THE FIRST BED AND THE QUENCH, UPWARD VIA A CENTRAL RISER TUBE AND THEN DOWNWARD THROUGH THE SECOND STAGE BED FOR EXIT FROM THE SHELL.
Inventors
- 👤 G Friedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:13
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/02; B01J8/04; B01J8/0446; B01J8/0476; B01J8/048; B01J8/0005; B01J8/0449; B01J8/0453; C; C01; C01B; C01B3/00; C01B3/02; C01B3/06; C01B3/12; C01B3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |