Patent US4017823A successfully refreshed from Google Patents.
Patent US2615315A successfully refreshed from Google Patents.
US3296121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillation control system
Assignee: Phillips Petroleum Co
•
Filing: 1964-06-15
•
Granted: 1967-01-03
•
Expires: 1984-06-15
Abstract
No abstract record available.
Inventors
- 👤 Mack F Potts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:36
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; B01D3/4238; Y; Y10; Y10S; Y10S203/00; Y10S203/19; Y10S208/00; Y10S208/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
200 words
A DISTILLATION PROCESS WHICH COMPRISES PASSING A FEED MIXTURE TO A DISTILLATION ZONE, WITHDRAWING A VAPOROUS STREAM FROM THE UPPER REGION OF SAID DISTILLATION ZONE, WITHDRAWING A LIQUID STREAM FROM THE LOWER REGION OF SAID DISTILLATION ZONE, PASSING A LIQUID SIDE STREAM FROM AN INTERMEDIATE REGION OF SAID DISTILLATION ZONE TO A FIRST COOLING ZONE, PASSING AT LEAST A PORTION OF THE RESULTANT COOLED SIDE STREAM FROM SAID FIRST COOLING ZONE TO A SECOND COOLING ZONE, COMBINING THE REMAINDER OF THE EFFLUENT STREAM FROM SAID FIRST COOLING ZONE WITH THE EFFLUENT STREAM WITHDRAWN FROM SAID SECOND COOLING ZONE, PASSING AT A SUBSTANTIALLY CONSTANT FLOW RATE THE RESULTANT COMBINED COOLED MIXTURE OF SAID DISTILLATION ZONE ABOVE THE POINT OF WITHDRAWAL OF SAID SIDE STREAM FROM SAID DISTILLATION ZONE, MANIPULATING THE RATE OF FLOW OF EFFLUENT FROM SAID FIRST COOLING ZONE TO SAID DISTILLATION ZONE RESPONSIVE TO A TEMPERATURE MEASUREMENT OF SAID COMBINED COOLED MIXTURE, AND MANIPULATING THE RATE OF FLOW THROUGH SAID SECOND COOLING ZONE RESPONSIVE TO A DIFFERENTIAL PRESSURE MEASUREMENT, SAID DIFFERENTIAL PRESSURE MEASUREMENT COMPRISING THE DIFFERENCE IN MEASUREMENTS REPRESENTATIVE OF THE PRESSURE OF THE EFFLUENT WITHDRAWN FROM SAID SECOND COOLING ZONE AND THE FEED TO SAID SECOND COOLING ZONE.
Claim 2
Dependent Claim
200 words
A DISTILLATION PROCESS WHICH COMPRISES PASSING A FEED MIXTURE TO A DISTILLATION ZONE, WITHDRAWING A VAPOROUS STREAM FROM THE UPPER REGION OF SAID DISTILLATION ZONE, WITHDRAWING A LIQUID STREAM FROM THE LOWER REGION OF SAID DISTILLATION ZONE, PASSING A LIQUID SIDE STREAM FROM AN INTERMEDIATE REGION OF SAID DISTILLATION ZONE TO A FIRST COOLING ZONE, PASSING AT LEAST A PORTION OF THE RESULTANT COOLED SIDE STREAM FROM SAID FIRST COOLING ZONE TO A SECOND COOLING ZONE, COMBINING THE REMAINDER OF THE EFFLUENT STREAM FROM SAID FIRST COOLING ZONE WITH THE EFFLUENT STREAM WITHDRAWN FROM SAID SECOND COOLING ZONE, PASSING AT A SUBSTANTIALLY CONSTANT FLOW RATE THE RESULTANT COMBINED COOLED MIXTURE OF SAID DISTILLATION ZONE ABOVE THE POINT OF WITHDRAWAL OF SAID SIDE STREAM FROM SAID DISTILLATION ZONE, MANIPULATING THE RATE OF FLOW OF EFFLUENT FROM SAID FIRST COOLING ZONE TO SAID DISTILLATION ZONE RESPONSIVE TO A TEMPERATURE MEASUREMENT OF SAID COMBINED COOLED MIXTURE, AND MANIPULATING THE RATE OF FLOW THROUGH SAID SECOND COOLING ZONE RESPONSIVE TO A DIFFERENTIAL PRESSURE MEASUREMENT, SAID DIFFERENTIAL PRESSURE MEASUREMENT COMPRISING THE DIFFERENCE IN MEASUREMENTS REPRESENTATIVE OF THE PRESSURE OF THE EFFLUENT WITHDRAWN FROM SAID SECOND COOLING ZONE AND THE FEED TO SAID SECOND COOLING ZONE.
References Cited (Backward Citations)
US2104310A
Cited
US2252020A
Cited
US2221702A
Cited
US3025232A
Cited
US3158556A
Cited
US3156628A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |