US3295897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for transferring a slurry of catalysts to a regeneration zone
Assignee: Sinclair Research Inc
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Filing: 1964-02-27
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Granted: 1967-01-03
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Expires: 1984-02-27
Abstract
No abstract record available.
Inventors
- 👤 Erickson Henry
- 👤 Howard G Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:54
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/0015; B01J8/002; B01J8/18; B01J8/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
AN IMPROVED METHOD FOR TRANSFERRING A WATER-SOLID CATALYST SLURRY FROM A LOWER PRESSURE CATALYST WASHING OPERATION TO A REGENERATION ZONE OF ELEVATED PRESSURE AND AT AN ELEVATED POSITION WHICH COMPRISES THE STEPS OF FORMING AN AQUEOUS SLURRY OF THE CATALYST CONTAINING ABOUT 2.5 TO 9 PARTS OF WATER PER PART OF CATALYST, PUMPING THE SLURRY FROM AN ELEVATION BELOW SAID REGENERATION ZONE TO AN INTERMEDIATE ZONE AT AN ELEVATION HIGHER THAN THE POINT OF ENTRY OF THE CATALYST INTO THE REGENERATION ZONE, REMOVING AT SAID HIGHER INTERMEDIATE ZONE AN AMOUNT OF WATER FROM THE SLURRY TO PROVIDE A MIXTURE OF CATALYST AND WATER CONTAINING ABOUT 1.2 TO 1.9 PARTS OF WATER PER PART OF CATALYST AND AT LEAST ABOUT 50% LESS WATER THAN IS IN SAID FORMED SLURRY, AND PASSING SAID CATALYST- WATER MIXTURE TO SAID REGENERATION ZONE BY WAY OF SAID LOWER POINT OF ENTRY.
Claim 2
Dependent Claim
146 words
AN IMPROVED METHOD FOR TRANSFERRING A WATER-SOLID CATALYST SLURRY FROM A LOWER PRESSURE CATALYST WASHING OPERATION TO A REGENERATION ZONE OF ELEVATED PRESSURE AND AT AN ELEVATED POSITION WHICH COMPRISES THE STEPS OF FORMING AN AQUEOUS SLURRY OF THE CATALYST CONTAINING ABOUT 2.5 TO 9 PARTS OF WATER PER PART OF CATALYST, PUMPING THE SLURRY FROM AN ELEVATION BELOW SAID REGENERATION ZONE TO AN INTERMEDIATE ZONE AT AN ELEVATION HIGHER THAN THE POINT OF ENTRY OF THE CATALYST INTO THE REGENERATION ZONE, REMOVING AT SAID HIGHER INTERMEDIATE ZONE AN AMOUNT OF WATER FROM THE SLURRY TO PROVIDE A MIXTURE OF CATALYST AND WATER CONTAINING ABOUT 1.2 TO 1.9 PARTS OF WATER PER PART OF CATALYST AND AT LEAST ABOUT 50% LESS WATER THAN IS IN SAID FORMED SLURRY, AND PASSING SAID CATALYST- WATER MIXTURE TO SAID REGENERATION ZONE BY WAY OF SAID LOWER POINT OF ENTRY.
References Cited (Backward Citations)
US2414736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |