Patent US3555837A successfully refreshed from Google Patents.
US3555837A
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US
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Temperature control of fluid separation systems
Assignee: Phillips Petroleum Co
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Filing: 1968-02-01
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Granted: 1971-01-19
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Expires: 1988-02-01
Abstract
Abstract HEAVY CONSTITUENTS ARE REMOVED FROM A GAS STREAM BY MEANS OF AN ABSORBER. THE RICH OIL FROM THE ABSORBER IS STRIPPED IN TWO DISTILLATION COLUMNS CONNECTED IN SERIES. THE KETTLE PRODUCT FROM THE SECOND COLUMN IS PASSED IN HEAT EXCHANGE RELATIONSHIP WITH FLUID IN THE FIRST COLUMN, THE KETTLE PRODUCT FROM THE FIRST COLUMN, AND THE RICH OIL FROM THE ABSORBER. FLUID FROM THE LOWER REGION OF THE SECOND COLUMN IS PASSED IN HEAT EXCHANGE RELATIONSHIP WITH THE FEED TO THE SECOND COLUMN. TEMPERATURES OF SEVERAL OF THE PROCESS STREAMS ARE MAINTAINED CONSTANT BY ADJUSTING FLOWS THROUGH THE HEAT EXCHANGERS IN RESPONSE TO TEMPERATURE MEASUREMENTS.
Inventors
- 👤 William A Mcclintock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:18
CPC Classifications
C; C10; C10G; C10G5/00; C10G5/06; B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; C07; C07C; C07C7/00; C07C7/005; C07C7/04; Y; Y10; Y10S; Y10S203/00; Y10S203/19
Claims Analysis
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |