US3340158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractionation of hydrocarbons utilizing flow controls responsive to temperature
Assignee: Phillips Petroleum Co
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Filing: 1964-05-26
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Granted: 1967-09-05
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Expires: 1984-05-26
Abstract
No abstract record available.
Inventors
- 👤 Donald R Bates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:50
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; B01D3/4227; Y; Y10; Y10S; Y10S203/00; Y10S203/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
261 words
A METHOD OF FRACTIONATION OF HYDROCARBONS COMPRISING FRACTIONATING IN A FIRST FRACTIONATION ZONE A FEED HYDROCARBON INTO AN OVERHEAD FRACTION AND A BOTTOM FRACTION, SPLITTING SAID OVERHEAD FRACTION INTO TWO STREAMS, PASSING A FIRST STREAM TO A FIRST HEAT EXCHANGE ZONE, CONTROLLING THE AMOUNT OF FLOW OF SAID FIRST STREAM TO SAID FIRST HEAT EXCHANGE ZONE BY A MEANS RESPONSIVE TO PRESSURE VARIATIONS WITHIN THE FIRST FRACTIONATION ZONE, PASSING A SECOND STREAM TO A REBOILING ZONE ASSOCIATED WITH A SECOND FRACTIONATION ZONE IN SUCH A MANNER THAT HEAT FROM SAID REBOILING ZONE IS PASSED DIRECTLY TO SAID SECOND FRACTIONATION ZONE, WITHDRAWING SAID SECOND STREAM FROM SAID REBOILING ZONE, SPLITTING SAID WITHDRAWN SECOND STREAM INTO TWO PORTIONS BY MEANS RESPONSIVE TO THE AMOUNT OF FLOW OF SAID SECOND STREAM PRIOR TO ENTRY INTO SAID REBOILING ZONE, ADDDING A FIRST PORTION OF SAID TWO PORTIONS TO SAID FIRST STREAM WHEN SAID FIRST STREAM LEAVES SAID FIRST HEAT EXCHANGE ZONE, VARYING THE AMOUNT OF SAID FIRST PORTION THAT IS ADDED TO SAID FIRST STREAM BY MEANS RESPONSIVE TO THE TEMPERATURE TO THE COMPOSITE OF SAID FIRST STREAM AND ANY OF SAID FIRST AND SECOND PORTIONS ADDED TO SAID FIRST STREAM UPSTREAM OR DOWNSTREAM OF SAID FIRST HEAT EXCHANGER ZONE, SAID TEMPERATURE BEING MEASURED DOWNSTREAM FROM SAID FIRST HEAT EXCHANGE ZONE, PASSING A SECOND OF SAID TWO PORTIONS TO SAID FIRST STREAM PRIOR TO THE ENTRY OF SAID FIRST STREAM INTO SAID FIRST HEAT EXCHANGE ZONE AND PASSING THE OUTFLOW FROM SAID FIRST HEAT EXCHANGE ZONE AND ANY ADDED FIRST PORTION TO A COLLECTING ZONE.
Claim 2
Independent Claim
261 words
A METHOD OF FRACTIONATION OF HYDROCARBONS COMPRISING FRACTIONATING IN A FIRST FRACTIONATION ZONE A FEED HYDROCARBON INTO AN OVERHEAD FRACTION AND A BOTTOM FRACTION, SPLITTING SAID OVERHEAD FRACTION INTO TWO STREAMS, PASSING A FIRST STREAM TO A FIRST HEAT EXCHANGE ZONE, CONTROLLING THE AMOUNT OF FLOW OF SAID FIRST STREAM TO SAID FIRST HEAT EXCHANGE ZONE BY A MEANS RESPONSIVE TO PRESSURE VARIATIONS WITHIN THE FIRST FRACTIONATION ZONE, PASSING A SECOND STREAM TO A REBOILING ZONE ASSOCIATED WITH A SECOND FRACTIONATION ZONE IN SUCH A MANNER THAT HEAT FROM SAID REBOILING ZONE IS PASSED DIRECTLY TO SAID SECOND FRACTIONATION ZONE, WITHDRAWING SAID SECOND STREAM FROM SAID REBOILING ZONE, SPLITTING SAID WITHDRAWN SECOND STREAM INTO TWO PORTIONS BY MEANS RESPONSIVE TO THE AMOUNT OF FLOW OF SAID SECOND STREAM PRIOR TO ENTRY INTO SAID REBOILING ZONE, ADDDING A FIRST PORTION OF SAID TWO PORTIONS TO SAID FIRST STREAM WHEN SAID FIRST STREAM LEAVES SAID FIRST HEAT EXCHANGE ZONE, VARYING THE AMOUNT OF SAID FIRST PORTION THAT IS ADDED TO SAID FIRST STREAM BY MEANS RESPONSIVE TO THE TEMPERATURE TO THE COMPOSITE OF SAID FIRST STREAM AND ANY OF SAID FIRST AND SECOND PORTIONS ADDED TO SAID FIRST STREAM UPSTREAM OR DOWNSTREAM OF SAID FIRST HEAT EXCHANGER ZONE, SAID TEMPERATURE BEING MEASURED DOWNSTREAM FROM SAID FIRST HEAT EXCHANGE ZONE, PASSING A SECOND OF SAID TWO PORTIONS TO SAID FIRST STREAM PRIOR TO THE ENTRY OF SAID FIRST STREAM INTO SAID FIRST HEAT EXCHANGE ZONE AND PASSING THE OUTFLOW FROM SAID FIRST HEAT EXCHANGE ZONE AND ANY ADDED FIRST PORTION TO A COLLECTING ZONE.
References Cited (Backward Citations)
US2781293A
Cited
US3260057A
Cited
US3228860A
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FR1305938A
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US3215744A
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US3281337A
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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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |