US3729526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen fluoride stripping to separate hydrocarbons and alkyl fluorides in alkylation process
Assignee: Universal Oil Products Co
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Filing: 1971-04-05
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Granted: 1973-04-24
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Expires: 1991-04-05
Abstract
Abstract THE REACTION MIXTURE FROM HF ALKYLATION OF ISOPARAFFIN WITH AN OLEFIN-ACTING REACTANT IS SEPARATED INTO A HYDROCARBON AND CARALYST PHASES, UNREACTED ISOPARAFFIN FROM THE HYDROCARBON PHASE STRIPS THE CATALYST PHASE TO SEPARATE AN OVERHEAD STREAM OF HYDROCARBONS AND ALKYL FLUORIDES, AND THE STRIPPED LIQUID CATALYST IS THEN PASSED TO THE ALKYLATION REACTION. THE SEPARATED STREAM OF HYDROCARBONS AND ALKYL FLUORIDES MAY BE SUPPLIED TO THE REACTION MIXTURE UNDERGOING PHASE SEPARATION TO RECOVER VALUABLE HYDROCARBONS FROM SAID OVERHEAD STREAM AS A PORTION OF THE ALKYLATE PRODUCT.
Inventors
- 👤 R Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:50
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/62; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 0
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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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |