Patent US2914591A successfully refreshed from Google Patents.
US2914591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Upgrading petroleum refinery streams
Assignee: Texaco Inc
•
Filing: 1958-05-07
•
Granted: 1959-11-24
•
Expires: 1978-05-07
Abstract
No abstract record available.
Inventors
- 👤 John D Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:16
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/12; C07C7/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A METHOD OF UPGRADING C3 AND C4 HYDROCARBON STREAMS WHICH COMPRISES CONTACTING A GASEOUS C3 HYDROCARBON STREAM CONTAINING PROPANE AND PROPYLENE WITH AN ALUMINO-SILICATE SOLID SELECTIVE ADSORBENT WHICH SELECTIVELY ADSORBS STRAIGHT CHAIN HYDROCARBONS TO THE SUBSTANTIAL EXCULSION OF NON-STRAIGHT CHAIN HYDROCARBONS AND WHICH SELECTIVELY ADSORBS PROPYLENE OVER PROPANE TO ADSORB PROPYLENE FROM SAID C3 STREAM, DESORBING THE ADSORBED PROPYLENE FROM SAID ADSORBENT BY CONTACT WITH A GASEOUS C4 HYDROCARBON STREAM CONTAINING N-BUTANE AND ISOBUTANE UNDER CONDITION SUCH THAT N-BUTANE IN SAID C4 PETROLEUM REFRINERY STREAM DISPLACES THE PERVIOUSLY ADSORBED PROPYLENE AND IS ADSORBED BY SAID SELECTIVE ADSORBENT AND PASSING THE RESULTING GASEOUS DESORPTION EFFLUENT COMPRISING ISOBUTANE AND PROPYLENE TO AN ALKYLAREACTION ZONE FOR THE MAMUFACTURE OF THE CORRESPONDING PROPYLENE ISOBUTANE ALKYLATE.
Claim 2
Independent Claim
121 words
A METHOD OF UPGRADING C3 AND C4 HYDROCARBON STREAMS WHICH COMPRISES CONTACTING A GASEOUS C3 HYDROCARBON STREAM CONTAINING PROPANE AND PROPYLENE WITH AN ALUMINO-SILICATE SOLID SELECTIVE ADSORBENT WHICH SELECTIVELY ADSORBS STRAIGHT CHAIN HYDROCARBONS TO THE SUBSTANTIAL EXCULSION OF NON-STRAIGHT CHAIN HYDROCARBONS AND WHICH SELECTIVELY ADSORBS PROPYLENE OVER PROPANE TO ADSORB PROPYLENE FROM SAID C3 STREAM, DESORBING THE ADSORBED PROPYLENE FROM SAID ADSORBENT BY CONTACT WITH A GASEOUS C4 HYDROCARBON STREAM CONTAINING N-BUTANE AND ISOBUTANE UNDER CONDITION SUCH THAT N-BUTANE IN SAID C4 PETROLEUM REFRINERY STREAM DISPLACES THE PERVIOUSLY ADSORBED PROPYLENE AND IS ADSORBED BY SAID SELECTIVE ADSORBENT AND PASSING THE RESULTING GASEOUS DESORPTION EFFLUENT COMPRISING ISOBUTANE AND PROPYLENE TO AN ALKYLAREACTION ZONE FOR THE MAMUFACTURE OF THE CORRESPONDING PROPYLENE ISOBUTANE ALKYLATE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |