Patent US3784628A successfully refreshed from Google Patents.
US3784628A
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US
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Removing alkyl fluoride with hf acid from an alkylation hydrocarbon effluent
Assignee: Phillips Petroleum Co
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Filing: 1971-07-06
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Granted: 1974-01-08
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Expires: 1991-07-06
Abstract
Abstract METHOD AND APPARATUS ARE DESCRIBED WHEREIN ALKYLATE CONTAINING ALKYL FLUORIDE IS PASSED UPWARDLY THROUGH A SERIES OF CONTACTING ZONES OR MEMBERS IN CONTACT WITH DOWNFLOWING HIGH PURITY HF ACID, ACID IS SETTLED BELOW THE CONTACTING ZONE AND RETURNED TO ALKLATION WHILE HYDROCARBON PHASE FORMED ABOVE THE CONTACTING ZONE IS RECOVERED SUBSTANTIALLY FREE FROM FLUORIDE.
Inventors
- 👤 C Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:51
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/04; B01D11/0426; B01D11/043; B01D11/0484; C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/62; C07C7/00; C07C7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |