US2739928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary converter purging system
Assignee: Sunoco Inc
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Filing: 1953-06-08
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Granted: 1956-03-27
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Expires: 1973-06-08
Abstract
No abstract record available.
Inventors
- 👤 Clarence H Thayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:00
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J8/10; B01J2208/00; B01J2208/02; B01J2208/023; B01J2208/027; B01J2208/028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
IN A PROCESS IN WHICH A ROTATABLE SERIES OF CATALYST UNITS ARE EACH CONTACTED, SUCCESSIVELY, WITH A FLUID HYDROCARBON REACTANT TO CONVERT IT TO OTHER HYDROCARBONS, WITH A PURGING FLUID TO REMOVE HYDROCARBONS DEPOSITED THEREON DURING THE HYDROCARBON CONVERSION STEP, WITH A FLUID OXIDIZING MEDIUM REACTANT TO REGENERATE THE CATALYST TO REMOVE CARBONACEOUS MATERIALS DEPOSITED THEREON DURING THE HYDROCARBON CONVERSION STEP, AND WITH A PURGING FLUID TO REMOVE REGENERATION PRODUCTS FORMED DURING THE IMMEDIATELY PRECEDING STEP: THE IMPROVEMENT WHICH COMPRISES DIVIDING THE FLUID PRODUCTS OF THE REGENERATING STEP INTO A PLURALITY OF STREAMS ONE OF WHICH STREAMS DISCHARGES FROM THE CATALYSTIC UNITS THAT HAVE EARILER RECEIVED THE OXIDIZING MEDIUM AND IS RELATIVELY LOW IN O2 CONTENT AND THE OTHER OF WHICH STREAMS DISCHARGES FROM THE CATALYSTIC UNITS THAT HAVE LATER RECEIVED THE OXIDIZING MEDIUM AND IS RELATIVELY HIGH IN O2, AND UTILIZING THE FLUID PRODUCTS OF THE FIRST STREAM AS THE PURGING FLUID FOR ONE OR BOTH OF THE SAID PURGING STEPS.
Claim 2
Dependent Claim
162 words
IN A PROCESS IN WHICH A ROTATABLE SERIES OF CATALYST UNITS ARE EACH CONTACTED, SUCCESSIVELY, WITH A FLUID HYDROCARBON REACTANT TO CONVERT IT TO OTHER HYDROCARBONS, WITH A PURGING FLUID TO REMOVE HYDROCARBONS DEPOSITED THEREON DURING THE HYDROCARBON CONVERSION STEP, WITH A FLUID OXIDIZING MEDIUM REACTANT TO REGENERATE THE CATALYST TO REMOVE CARBONACEOUS MATERIALS DEPOSITED THEREON DURING THE HYDROCARBON CONVERSION STEP, AND WITH A PURGING FLUID TO REMOVE REGENERATION PRODUCTS FORMED DURING THE IMMEDIATELY PRECEDING STEP: THE IMPROVEMENT WHICH COMPRISES DIVIDING THE FLUID PRODUCTS OF THE REGENERATING STEP INTO A PLURALITY OF STREAMS ONE OF WHICH STREAMS DISCHARGES FROM THE CATALYSTIC UNITS THAT HAVE EARILER RECEIVED THE OXIDIZING MEDIUM AND IS RELATIVELY LOW IN O2 CONTENT AND THE OTHER OF WHICH STREAMS DISCHARGES FROM THE CATALYSTIC UNITS THAT HAVE LATER RECEIVED THE OXIDIZING MEDIUM AND IS RELATIVELY HIGH IN O2, AND UTILIZING THE FLUID PRODUCTS OF THE FIRST STREAM AS THE PURGING FLUID FOR ONE OR BOTH OF THE SAID PURGING STEPS.
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) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |