Patent US3309288A successfully refreshed from Google Patents.
US3309288A
Expired / Lapsed
US
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Fractional distillation of a component from a feedstock by the addition of higher boiler vapors to the reboiler
Assignee: Phillips Petroleum Co
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Filing: 1962-11-02
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Granted: 1967-03-14
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Expires: 1982-11-02
Abstract
No abstract record available.
Inventors
- 👤 Iii William H Butterbaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:29
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/32; B01D3/322; B01D3/42; B01D3/4211; B01D3/425; Y; Y10; Y10S; Y10S203/00; Y10S203/19; Y10S585/00; Y10S585/949; Y10S585/956
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A METHOD FOR THE CONCENTRATION BY FRACTIONAL DISTILLATION OF 1,3-BUTADIENE FROM A FEED STOCK RICH IN 1,3BUTADIENE AND HAVING A NARROW BOILING RANGE WITHOUT OVERHEATING THE KETTLE PRODUCT IN PROCESS COMPRISING INTRODUCING SAID FEED STOCK INTO A FRACTIONAL DISTILLATION COLUMN, AND FRACTIONALLY DISTILLING SAID FEED STOCK BY ADDING REBOILING HEAT TO THE KETTLE SECTION OF THE COLUMN AND REFLUXING THE HEAD SECTION OF THE COLUMN, ADDING TO THE KETTLE SECTION A CONPONENT WHICH IS ALSO A CONPONENT OF SAID FEED STOCK AND WHICH HAS A BOILING POINT SLIGHTLY HIGHER THAN, 1,3-BUTADIENE, VAPORIZING AT LEAST A PORTION OF THE ADDED CONPONENT IN AN AMOUNT SUFFICIENT TO INCREASE THE FLOW OF VAPARS OF THE ADDED CONPONENT AND 1,3-BUTTADIENE UP COLUMN AND REDUCE THE CONCENTRATION OF 1,3BUTADIENE IN THE KETTLE MATERIAL, REMOVING THE LATTER MATERIAL LEAN IN 1,3-BUTADIENE AS A KETTLE PRODUCT, AND REMOVING AN OVERHEAD PRODUCT HAVING AN INCREASED CONCENTRATION OF 1,3-BUTADIENE AS PRODUCT OF THE OPERATION.
Claim 2
Independent Claim
155 words
A METHOD FOR THE CONCENTRATION BY FRACTIONAL DISTILLATION OF 1,3-BUTADIENE FROM A FEED STOCK RICH IN 1,3BUTADIENE AND HAVING A NARROW BOILING RANGE WITHOUT OVERHEATING THE KETTLE PRODUCT IN PROCESS COMPRISING INTRODUCING SAID FEED STOCK INTO A FRACTIONAL DISTILLATION COLUMN, AND FRACTIONALLY DISTILLING SAID FEED STOCK BY ADDING REBOILING HEAT TO THE KETTLE SECTION OF THE COLUMN AND REFLUXING THE HEAD SECTION OF THE COLUMN, ADDING TO THE KETTLE SECTION A CONPONENT WHICH IS ALSO A CONPONENT OF SAID FEED STOCK AND WHICH HAS A BOILING POINT SLIGHTLY HIGHER THAN, 1,3-BUTADIENE, VAPORIZING AT LEAST A PORTION OF THE ADDED CONPONENT IN AN AMOUNT SUFFICIENT TO INCREASE THE FLOW OF VAPARS OF THE ADDED CONPONENT AND 1,3-BUTTADIENE UP COLUMN AND REDUCE THE CONCENTRATION OF 1,3BUTADIENE IN THE KETTLE MATERIAL, REMOVING THE LATTER MATERIAL LEAN IN 1,3-BUTADIENE AS A KETTLE PRODUCT, AND REMOVING AN OVERHEAD PRODUCT HAVING AN INCREASED CONCENTRATION OF 1,3-BUTADIENE AS PRODUCT OF THE OPERATION.
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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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |