US3013952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of butene-1 from butadiene and acetylenes
Assignee: Phillips Petroleum Co
•
Filing: 1958-01-30
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Granted: 1961-12-19
•
Expires: 1978-01-30
Abstract
No abstract record available.
Inventors
- 👤 Harris A Clay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:01
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/04; C07C7/05; C07C7/08; Y; Y10; Y10S; Y10S585/00; Y10S585/949; Y10S585/956
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
THE METHOD OF SUBSTANTIALLY ELIMINATING ACETYLENES FROM THE OVERHEAD PRODUCT OF THE BUTENE-1 EXTRACTIVE DISTILLATION STEP IN THE PROCESS FOR RECOVERING BUTADLENE FROM A MIXTURE OF HYDROCARBONS INCLUDING BUTADIENE, BUTENE-1 AND ACETYLENES WHEREIN BUTADIENE AND ACETYLENES ARE ABSORBED IN AN EXTRACTIVE DISTILLATION STEP WITHOUT SUBSTANTIAL ABSORPTION OF BUTENE-1, THE BUTENE-1 IS RECOVERED AS THE OVERHEAD PRODUCT IN THE EXTRACTIVE DISTILLATION STEP, THE RICH SOLVENT IS PASSED TO A STRIPPING STEP FOR REMOVAL OF ABSORBED HYDROCARBONS AND LEAN SOLVENT IS THEN RETURNED TO THE EXTRACTIVE DISTILLATION STEP, WHICH METHOD COMPRISES SUPPLYING SUFFICIENT HEAT TO SAID STRIPPING STEP TO MAINTAIN THE C4 HYDROCARBON CONTENT OF THE SOLVENT RETURNED TO THE EXTRACTIVE DISTILLATION STEP AT A VALUE OF NOT MORE THAN ABOUT .0028 MOL PERCENT.
Claim 2
Independent Claim
122 words
THE METHOD OF SUBSTANTIALLY ELIMINATING ACETYLENES FROM THE OVERHEAD PRODUCT OF THE BUTENE-1 EXTRACTIVE DISTILLATION STEP IN THE PROCESS FOR RECOVERING BUTADLENE FROM A MIXTURE OF HYDROCARBONS INCLUDING BUTADIENE, BUTENE-1 AND ACETYLENES WHEREIN BUTADIENE AND ACETYLENES ARE ABSORBED IN AN EXTRACTIVE DISTILLATION STEP WITHOUT SUBSTANTIAL ABSORPTION OF BUTENE-1, THE BUTENE-1 IS RECOVERED AS THE OVERHEAD PRODUCT IN THE EXTRACTIVE DISTILLATION STEP, THE RICH SOLVENT IS PASSED TO A STRIPPING STEP FOR REMOVAL OF ABSORBED HYDROCARBONS AND LEAN SOLVENT IS THEN RETURNED TO THE EXTRACTIVE DISTILLATION STEP, WHICH METHOD COMPRISES SUPPLYING SUFFICIENT HEAT TO SAID STRIPPING STEP TO MAINTAIN THE C4 HYDROCARBON CONTENT OF THE SOLVENT RETURNED TO THE EXTRACTIVE DISTILLATION STEP AT A VALUE OF NOT MORE THAN ABOUT .0028 MOL PERCENT.
References Cited (Backward Citations)
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US2696464A
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US2684326A
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US2709678A
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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) | 1964-12-18 | 1965-06-19 | 1965-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-18 | 1969-06-19 | 1969-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-18 | 1973-06-19 | 1973-12-19 | $7700.00 | Window Closed / Lapsed |