US3020213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractionation control system
Assignee: Phillips Petroleum Co
•
Filing: 1959-11-16
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Granted: 1962-02-06
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Expires: 1979-11-16
Abstract
No abstract record available.
Inventors
- 👤 Dale E Lupfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:32
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; B01D3/425; Y; Y10; Y10S; Y10S203/00; Y10S203/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN A FRACTIONATION SYSTEM WHEREIN A FEED MIXTURE OF TWO OR MORE COMPONENTS IS DIRECTED TO A FRACTIONATION COLUMN, A TEMPERATURE DIFFERENTIAL IS MAINTAINED BETWEEN THE BOTTOM AND TOP OF SAID COLUMN, A VAPOR STREAM IS REMOVED FROM THE TOP OF SAID COLUMN, SAID VAPOR STREAM IS COOLED TO CONDENSE AT LEAST A PART OF SAME, A PART OF THE RESULTING CONDENSATE IS RETURNED TO SAID COLUMN AS EXTERNAL REFLUX, AND A LIQUID STREAM IS REMOVED FROM THE BOTTOM OF SIAD COLUMN; A CONTROL SYSTEM COMPRISING FIRST MEANS TO ESTABLISH A SIGNAL RE REPRESENTATIVE OF THE FLOW OF SID EXTERNAL REFLUX, SECOND MEANS TO ESTABLISH A SIGNAL $T REPRESENTATIVE OF THE DIFFERENCE BETWEEN THE TEMPERATURE OF VAPOR REMOVED FROM SAID COLUMN AND THE TEMPERATURE OF SAID EXTERNAL REFLUX, THIRD MEANS RESPONSIVE TO SAID FIRST AND SECOND MEANS TO ESTABLISH A SIGNAL R1 WHICH IS EQUAL TO
Claim 2
Dependent Claim
146 words
IN A FRACTIONATION SYSTEM WHEREIN A FEED MIXTURE OF TWO OR MORE COMPONENTS IS DIRECTED TO A FRACTIONATION COLUMN, A TEMPERATURE DIFFERENTIAL IS MAINTAINED BETWEEN THE BOTTOM AND TOP OF SAID COLUMN, A VAPOR STREAM IS REMOVED FROM THE TOP OF SAID COLUMN, SAID VAPOR STREAM IS COOLED TO CONDENSE AT LEAST A PART OF SAME, A PART OF THE RESULTING CONDENSATE IS RETURNED TO SAID COLUMN AS EXTERNAL REFLUX, AND A LIQUID STREAM IS REMOVED FROM THE BOTTOM OF SIAD COLUMN; A CONTROL SYSTEM COMPRISING FIRST MEANS TO ESTABLISH A SIGNAL RE REPRESENTATIVE OF THE FLOW OF SID EXTERNAL REFLUX, SECOND MEANS TO ESTABLISH A SIGNAL $T REPRESENTATIVE OF THE DIFFERENCE BETWEEN THE TEMPERATURE OF VAPOR REMOVED FROM SAID COLUMN AND THE TEMPERATURE OF SAID EXTERNAL REFLUX, THIRD MEANS RESPONSIVE TO SAID FIRST AND SECOND MEANS TO ESTABLISH A SIGNAL R1 WHICH IS EQUAL TO
References Cited (Backward Citations)
US2684326A
Cited
US2767133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |