US2974182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractionator reboiler operation and method of using same
Assignee: Phillips Petroleum Co
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Filing: 1958-11-20
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Granted: 1961-03-07
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Expires: 1978-11-20
Abstract
No abstract record available.
Inventors
- 👤 Joe Van Pool
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:36
CPC Classifications
C; C10; C10G; C10G7/00; C10G7/02; B; B01; B01D; B01D3/00; B01D3/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
145 words
A PROCESS FOR THE THERMAL DEFLUORINATION OF AN HF ALKYLATION EFFLUENT, WHICH IS BEING SUBJECTED TO DEISOBUTANIZATION, THE STEPS IN COMBINATION AS FOLLOWS: REMOVING AN AT LEAST PARTIALLY DEISOBUTANIZED FRACTION FROM A DEISOBUTANIZATION ZONE, PASSING SAID FRACTION TO A HEATING ZONE, HEATING SAID FRACTION IN SAID HEATING ZONE AND CONTROLLING THE EFFLUENT TEMPERATURE OF SAID HEATING ZONE TO A CONSTANT PREDETERMINED VALUE SUITABLE FOR DEFLUORINATION OF SAID FRACTION, RETURNING SAID THUS HEATED FRACTION TO SAID DEISOBUTANIZATION ZONE, AND MAINTAINING A CONSTANT TEMPERATURE OF SAID FRACTION IN SAID DEISOBUTANIZATION ZONE BY CONTROLLING THE PRESSURE OF SAID EFFLUENT AT A CONSTANT PREDETERMINED VALUE WHICH IS ABOVE THE PRESSURE IN SAID DEISOBUTANIZATION ZONE, THEN EXPANDING SAID EFFLUENT INTO SAID DEISOBUTANIZATION ZONE, AND CONTROLLING THE RATE OF FLOW OF SAID FRACTION FROM SAID DEISOBUTANIZATION ZONE TO SAID HEATING ZONE AND BACK TO SAID DEISOBUTANIZATION ZONE RESPONSIVE TO A PREDETERMINED
References Cited (Backward Citations)
US2277070A
Cited
US2759032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |