Patent US2764623A successfully refreshed from Google Patents.
US2764623A
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Method of operating a catalytic acid alkylation unit
Assignee: Phillips Petroleum Co
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Filing: 1951-11-21
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Granted: 1956-09-25
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Expires: 1971-11-21
Abstract
No abstract record available.
Inventors
- 👤 Ancel B Leonard
- 👤 Hettick George Riley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:23
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
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
IN A PROCESS FOR THE ALKYLATION OF HYDROCARBONS IN A REACTION ZONE IN THE PRESENCE OF AN ACID WHIC IS VOLATILE UNDER CONDITIONS EMPLOYED IN SEPARATING UNREACTED HYDROCARBONS FROM REACTED HYDROCARBONS, THE IMPROVED METHOD OF OPERATION WHICH COMPRISES PASSING A PORTION OF HYDROCARBON PHASE EFFLUENT FROM SAID REACTION ZONE TO AN ACID STRIPPER TOWER AS FEED THERETO, PASSING ANOTHER PORTION OF SAID EFFLUENT AS FEED TO AN ACID-ISO TOWER OPERATED IN PARALLEL WITH SAID ACID STRIPPER TOWER, THE RATIO OF THE VOLUME OF FEED TO SAID ACID STRIPPER TOWER TO THE VOLUME OF FEED TO SAID ACID-ISO TOWER BEING FROM 1:3 TO 5:1, TAKING OVERHEAD FROM SAID ACID-ISO TOWER FROM 70 TO 90 PERCENT OF THE FEED THERETO, TAKING OVERHEAD FROM SAID ACID STRIPPER TOWER FROM 5 TO 20 PERCENT OF THE FEED THERETO, COMBINING SAID OVERHEAD STREAMS AND PASSING SAID COMBINED STREAM TO SAID REACTION ZONE.
Claim 2
Dependent Claim
147 words
IN A PROCESS FOR THE ALKYLATION OF HYDROCARBONS IN A REACTION ZONE IN THE PRESENCE OF AN ACID WHIC IS VOLATILE UNDER CONDITIONS EMPLOYED IN SEPARATING UNREACTED HYDROCARBONS FROM REACTED HYDROCARBONS, THE IMPROVED METHOD OF OPERATION WHICH COMPRISES PASSING A PORTION OF HYDROCARBON PHASE EFFLUENT FROM SAID REACTION ZONE TO AN ACID STRIPPER TOWER AS FEED THERETO, PASSING ANOTHER PORTION OF SAID EFFLUENT AS FEED TO AN ACID-ISO TOWER OPERATED IN PARALLEL WITH SAID ACID STRIPPER TOWER, THE RATIO OF THE VOLUME OF FEED TO SAID ACID STRIPPER TOWER TO THE VOLUME OF FEED TO SAID ACID-ISO TOWER BEING FROM 1:3 TO 5:1, TAKING OVERHEAD FROM SAID ACID-ISO TOWER FROM 70 TO 90 PERCENT OF THE FEED THERETO, TAKING OVERHEAD FROM SAID ACID STRIPPER TOWER FROM 5 TO 20 PERCENT OF THE FEED THERETO, COMBINING SAID OVERHEAD STREAMS AND PASSING SAID COMBINED STREAM TO SAID REACTION ZONE.
References Cited (Backward Citations)
US2423156A
Cited
US2410498A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |