Patent US3310487A successfully refreshed from Google Patents.
US3310487A
Expired / Lapsed
US
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Fractionation system
Assignee: Phillips Petroleum Co
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Filing: 1964-10-23
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Granted: 1967-03-21
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Expires: 1984-10-23
Abstract
No abstract record available.
Inventors
- 👤 Frank E Johnson
- 👤 Mack F Potts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:12
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/143; C; C10; C10G; C10G7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A METHOD OF FRACTIONATION COMPRISING INTRODUCING A SUITABLE FEED INTO A FRACTIONATOR TO PRODUCE, INTER ALIA, INTERMEDIATE DISTILLATES, REMOVING AT LEAST ONE OF SAID INTERMEDIATE DISTILLATES FROM SAID FRACTIONATOR, PASSING SAID INTERMEDIATE DISTILLATE TO A COMBINED STRIPPER-DEHYDRATOR ZONE DIVIDED INTO AN UPPER SECTION, AN INTERMEDIATE SECTION, AND A LOWER SECTION, CONTACTING SAID DISTILLATE WITH A STRIPPING MEDIUM IN SAID FIRST SECTION OF SAID STRIPPERDEHYDRATOR TO PRODUCE AN OVERHEAD PRODUCT, RETURNING SAID OVERHEAD PRODUCT TO SAID FRACTIONATOR, SUBJECTING A BOTTOMS PRODUCT REMOVED FROM SAID FIRST SECTION TO REDUCED PRESSURE STRIPPING IN SAID INTERMEDIATE SECTION TO PRODUCE A SECOND OVERHEAD PRODUCT, COMBINING SAID SECOND OVERHEAD PRODUCT WITH THE STRIPPING MEDIUM UTILIZED TO PRODUCE SAID FIRST OVERHEAD, RECOVERING STRIPPED LIQUID FROM SAID SECOND SECTION AS PRODUCT, PASSING A SECOND INTERMEDIATE DISTILLATE FROM SAID FRACTIONATION TO SAID LOWER SECTION AND THEREIN SUBJECTING SAME TO STRIPPING, RETURNING STRIPPED OVERHEAD TO SAID FRACTIONATION, AND RECOVERING A SECOND STRIPPED PRODUCT FROM THE BASE OF SAID LOWER SECTION.
Claim 2
Independent Claim
160 words
A METHOD OF FRACTIONATION COMPRISING INTRODUCING A SUITABLE FEED INTO A FRACTIONATOR TO PRODUCE, INTER ALIA, INTERMEDIATE DISTILLATES, REMOVING AT LEAST ONE OF SAID INTERMEDIATE DISTILLATES FROM SAID FRACTIONATOR, PASSING SAID INTERMEDIATE DISTILLATE TO A COMBINED STRIPPER-DEHYDRATOR ZONE DIVIDED INTO AN UPPER SECTION, AN INTERMEDIATE SECTION, AND A LOWER SECTION, CONTACTING SAID DISTILLATE WITH A STRIPPING MEDIUM IN SAID FIRST SECTION OF SAID STRIPPERDEHYDRATOR TO PRODUCE AN OVERHEAD PRODUCT, RETURNING SAID OVERHEAD PRODUCT TO SAID FRACTIONATOR, SUBJECTING A BOTTOMS PRODUCT REMOVED FROM SAID FIRST SECTION TO REDUCED PRESSURE STRIPPING IN SAID INTERMEDIATE SECTION TO PRODUCE A SECOND OVERHEAD PRODUCT, COMBINING SAID SECOND OVERHEAD PRODUCT WITH THE STRIPPING MEDIUM UTILIZED TO PRODUCE SAID FIRST OVERHEAD, RECOVERING STRIPPED LIQUID FROM SAID SECOND SECTION AS PRODUCT, PASSING A SECOND INTERMEDIATE DISTILLATE FROM SAID FRACTIONATION TO SAID LOWER SECTION AND THEREIN SUBJECTING SAME TO STRIPPING, RETURNING STRIPPED OVERHEAD TO SAID FRACTIONATION, AND RECOVERING A SECOND STRIPPED PRODUCT FROM THE BASE OF SAID LOWER SECTION.
References Cited (Backward Citations)
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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) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |