US2579678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst regeneration
Assignee: Sinclair Refining Co
•
Filing: 1947-06-21
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Granted: 1951-12-25
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Expires: 1967-06-21
Abstract
No abstract record available.
Inventors
- 👤 George F Kuhn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:30
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/1881
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
IN THE STEP OF REGENERATION FINELY DIVIDED CATALYST WHICH HAS BEEN USED IN THE PRYOLYTIC CONVERSION OF HYDROCARBONS BY THE PROCESS COMPRISING THE SUBJECTING OF THE HYDROCARBON TO BE CONVERTED TO CONVERSION TEMPERATURES IN THE PRESENCE OF THE CATAYST WHEREBY CARBONACEOUS MATERIAL IS DEPOSITED THEREON AND THE CATALYST IS INTERMITTENLY REGENERATED BY BURNING OFF THE DEPOSITED CARBON BY PASSING AIR IN CONTACT THEREWITH, THE IMPROVEMENT WHICH COMPRISES SUSPENDING THE CATALYST IN A CURRENT OF AIR AND CONVEYING IT THEREBY TO AN ELEVATED CHAMBER, SEPARATING CATALYST FROM THE AIR IN THE CHAMBER AND PASSING THE SEPARATED CATALYST BY GRAVITY TO AND DOWNWARDLY THROUGH A REGENERATING CHAMBER POSITIONED AT AN ELEVATION LOWER THAN THAT OF THE FIRST SAID CHAMBER, WITHDRAWING THE AIR FROM THE ELEVATED CHAMBER AND PASSING IT TO A LOWER ZONE OF THE REGENERATED CHAMBER AND UPWARDLY THROUGH THE CHAMBER IN CONTACT WITH THE DOWNWARDLY FLOWING CATALYST.
Claim 2
Dependent Claim
147 words
IN THE STEP OF REGENERATION FINELY DIVIDED CATALYST WHICH HAS BEEN USED IN THE PRYOLYTIC CONVERSION OF HYDROCARBONS BY THE PROCESS COMPRISING THE SUBJECTING OF THE HYDROCARBON TO BE CONVERTED TO CONVERSION TEMPERATURES IN THE PRESENCE OF THE CATAYST WHEREBY CARBONACEOUS MATERIAL IS DEPOSITED THEREON AND THE CATALYST IS INTERMITTENLY REGENERATED BY BURNING OFF THE DEPOSITED CARBON BY PASSING AIR IN CONTACT THEREWITH, THE IMPROVEMENT WHICH COMPRISES SUSPENDING THE CATALYST IN A CURRENT OF AIR AND CONVEYING IT THEREBY TO AN ELEVATED CHAMBER, SEPARATING CATALYST FROM THE AIR IN THE CHAMBER AND PASSING THE SEPARATED CATALYST BY GRAVITY TO AND DOWNWARDLY THROUGH A REGENERATING CHAMBER POSITIONED AT AN ELEVATION LOWER THAN THAT OF THE FIRST SAID CHAMBER, WITHDRAWING THE AIR FROM THE ELEVATED CHAMBER AND PASSING IT TO A LOWER ZONE OF THE REGENERATED CHAMBER AND UPWARDLY THROUGH THE CHAMBER IN CONTACT WITH THE DOWNWARDLY FLOWING CATALYST.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |