Patent US3322650A successfully refreshed from Google Patents.
US3322650A
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US
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Control of ratio of rate of heat flow to rate of feed in distillation responsive to bottoms analysis
Assignee: Phillips Petroleum Co
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Filing: 1964-01-03
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Granted: 1967-05-30
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Expires: 1984-01-03
Abstract
No abstract record available.
Inventors
- 👤 Thell L Hillburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:30
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; B01D3/425; Y; Y10; Y10S; Y10S203/00; Y10S203/19
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
128 words
A METHOD FOR CONTROLLING THE OPERATION OF A FRACTIONAL DISTILLATION COLUMN, COMPRISING THE STEPS OF: PASSING A FEED INTO SAID COLUMN; CONTROLLING THE TEMPERATURE OF SAID FEED; PASSING A HEATING FLUID IN HEAT EXCHANGE RELATION WITH SAID COLUMN; MEASURING THE FLOW OF SAID FEED AND PRODUCING A FIRST SIGNAL PROPORTIONAL THERETO; MEASURING THE FLOW OF SAID HEATING FLUID AND PRODUCING A SECOND SIGNAL PROPORTIONAL THERETO; CONTROLLING THE FLOW OF SAID HEATING FLUID IN RESPONSE TO SAID FIRST AND SECOND SIGNALS TO MAINTAIN A PREDETERMINED RATIO OF THE FLOW OF SAID HEATING FLUID TO THE FLOW OF SAID FEED; ANALYZING KETTLE PRODUCT OF SAID COLUMN AND PRODUCING A THIRD SIGNAL PROPORTIONAL TO THE CONCENTRATION OF A SELECTED COMPONENT THERIN; AND ADJUSTING SAID RATIO IN RESPONSE TO SAID THIRD SIGNAL.
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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) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |