US2856264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charging fluidizing gas into fluidized bed reactor
Assignee: EIDP Inc
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Filing: 1954-04-09
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Granted: 1958-10-14
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Expires: 1974-04-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Wendell E Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:27
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/44
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
A METHOD FOR CHARGING A FLUIDIXING GAS INTO A REACTOR WHEREIN FINELY DIVIDED SOLIDS COMPRISING ILMENITE ORE AND COKE ARE REACTED IN FLUIDIZED STATE WITH CHLORINE AT AN ELEVATED TEMPERATURE TO PRODUCE TITANIUM TETRACHLORIDE WHICH COMPRISES PASSING SAID CHLORINE UPWARDLY INTO SAID REACTOR AND THROUGH A PLURALITY OF VERTICAL INLET CONDUITS, AND MAINTAINING SAID SOLIDS IN UNIFORMLY DISTRIBUTED FLUIDIZED SUSPENSION WHILE PREVENTING THEIR BACKFLOW INTO SAID CONDUITS BY PROVIDING IN THE EXTREMITY OF EACH OF THE LATTER A SQUARE- SIDED, HELIX-SHAPED PASSAGE HAVING A CROSS-SECTIONAL AREA OF APPROXIMATELY ONE-FIFTH THAT OF SAID CONDUIT WITH THE MINOR HELIX ANGLE AT THE OLWER BONDARY SURFACE OF SAID PASSAGE BEING APPROXIMATELY 25* AND LENGHT THEREOF AT LEAST TURNS.
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) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |