Patent US2974100A successfully refreshed from Google Patents.
US2974100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for controlling dephlegmators
Assignee: Phillips Petroleum Co
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Filing: 1958-06-12
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Granted: 1961-03-07
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Expires: 1978-06-12
Abstract
No abstract record available.
Inventors
- 👤 Charles G Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:02
CPC Classifications
B; B01; B01D; B01D5/00; B01D5/0057; B01D5/006; B01D5/0063; B01D3/00; B01D3/42; B01D3/4211; B01D3/4238; B01D5/0027; B01D5/0078; B01D5/0093
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
230 words
A METHOD FOR RECOVERY OF GASOLINE VAPORS FROM A MIXTURE CONTAINING THE SAME AND SOME ABSORBER OIL UNAVOIDABLY ENTRAINED WHEN SAID VAPORS HAVE BEEN STRIPPED FROM A RICH ABOSRBER OIL OBTAINED IN THE RECOVERY OF NATURAL GASOLINE WHICH COMPRISES FEEDING THE VAPOR MIXTURE TO A DPHLEGMATION ZONE, CONDENSING OIL IN SAID ZONE, REMOVING GASOLINE VAPOR OVERHEAD FROM SAID ZONE, REVING CONDENSED OIL FROM THE LOWER PORTION OF SAID ZONE, RECIRCULATING WATER FEOM AN INTERMEDIATE PORTION OF SAID ZONE TO THE UPPER PORTION THEREOF TO PROVIDE COOLING OF SAID UPPER PORTION, DETERMINING CHANGES IN THE AMOUNT OF CONDENSED OIL REMOVED FROM THE LOWER PORTION OF SAID ZONE, DETERMINING CHANGES IN THE TEMPERATURE OF THE VAPOR REMOVED OVERHEAD FROM SAID ZONE, AND INCREASING THE AMOUNT OF WATER RECIRCULATED IN RESPONSE TO A DECREASE IN FLOW OF CONDENSED OIL, INCREASING THE AMOUNT OF WATER RECIRCULATED IN RESPONSE TO AN INCREASE IN THE TEMPERATURE OF THE OVERHEAD VAPORS, DECREASING THE AMOUNT OF WATER REECIRCULATED IN RESPONSE TO AN INCREASE IN THE FLOW OF CONDENSED OIL AND DECREASING THE AMOUNT OF WATER CIRCULATED IN RESPONSE TO A DECREASE IN THE TEMPRERATURE OF THE OVERHEAD VAPORS, THE NET EFFECT OF SAID CHANGES BEING SUCH THAT WHEN THE VOLUME OF CONDENSED OIL REMOVED INCREASED THE FLOW RATE OF COOLING WATER IS ADUJSTED TO PROVIDE AN INCREASE IN THE TEMPERATURE OF THE VAPORS REMOVED OVERHEAD AND VICE VERSA.
Claim 2
Independent Claim
230 words
A METHOD FOR RECOVERY OF GASOLINE VAPORS FROM A MIXTURE CONTAINING THE SAME AND SOME ABSORBER OIL UNAVOIDABLY ENTRAINED WHEN SAID VAPORS HAVE BEEN STRIPPED FROM A RICH ABOSRBER OIL OBTAINED IN THE RECOVERY OF NATURAL GASOLINE WHICH COMPRISES FEEDING THE VAPOR MIXTURE TO A DPHLEGMATION ZONE, CONDENSING OIL IN SAID ZONE, REMOVING GASOLINE VAPOR OVERHEAD FROM SAID ZONE, REVING CONDENSED OIL FROM THE LOWER PORTION OF SAID ZONE, RECIRCULATING WATER FEOM AN INTERMEDIATE PORTION OF SAID ZONE TO THE UPPER PORTION THEREOF TO PROVIDE COOLING OF SAID UPPER PORTION, DETERMINING CHANGES IN THE AMOUNT OF CONDENSED OIL REMOVED FROM THE LOWER PORTION OF SAID ZONE, DETERMINING CHANGES IN THE TEMPERATURE OF THE VAPOR REMOVED OVERHEAD FROM SAID ZONE, AND INCREASING THE AMOUNT OF WATER RECIRCULATED IN RESPONSE TO A DECREASE IN FLOW OF CONDENSED OIL, INCREASING THE AMOUNT OF WATER RECIRCULATED IN RESPONSE TO AN INCREASE IN THE TEMPERATURE OF THE OVERHEAD VAPORS, DECREASING THE AMOUNT OF WATER REECIRCULATED IN RESPONSE TO AN INCREASE IN THE FLOW OF CONDENSED OIL AND DECREASING THE AMOUNT OF WATER CIRCULATED IN RESPONSE TO A DECREASE IN THE TEMPRERATURE OF THE OVERHEAD VAPORS, THE NET EFFECT OF SAID CHANGES BEING SUCH THAT WHEN THE VOLUME OF CONDENSED OIL REMOVED INCREASED THE FLOW RATE OF COOLING WATER IS ADUJSTED TO PROVIDE AN INCREASE IN THE TEMPERATURE OF THE VAPORS REMOVED OVERHEAD AND VICE VERSA.
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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) | 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 |