US3294858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective conversion of normal paraffins
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1963-02-28
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Granted: 1966-12-27
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Expires: 1983-02-28
Abstract
No abstract record available.
Inventors
- 👤 Roger M Butler
- 👤 Eng Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:26
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/02; C10G25/03; C10G45/00; C10G45/58; C10G45/60; C10G45/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
AN IMPROVED PROCESS FOR SELECTIVELY REMOVING NORMAL PARAFFIN HYDROCARBONS FROM A HYDROCARBON OIL BOILING BETWEEN ABOUT 100* AND ABOUT 750*F. WHICH COMPRISES CONTACTING SAID OIL IN VAPOR PHASE WITH A CRYSTALLINE METALLIC ALUMINO-SILICATE HAVING UNIFORM PORT SPACES OF ABOUT 5 ANGSTROM UNITS AND CONCOMITANTLY PURGING HYDROCARBON FRAGMENTS FROM THE SAID PORES OF THE CRYSTALLINE METALLIC ALUMINO-SILICATE WITH A GAS HAVING A MOLECULAR DIAMETER LESS THAN ABOUT 5 ANGSTROM UNITS AT A TEMPERATURE OF FROM ABOUT 800 TO ABOUT 1000*F. IN A CONTACTING ZONE, SAID GAS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, NITROGEN, CARBON DIOXIDE AND INERT GAS, WITHDRAWING OIL VAPOR CONTAINING OLEFINS FORMED BY THE SELECTIVE CONVERSION OF NORMAL PARAFFINS FROM SAID ZONE, CONTINUING SAID CONTACTING UNTIL THE VAPOR WITHDRAWN HAS AN UNDERSIRABLY HIGH NORMAL PARAFFIN CONTENT, AND THEREAFTER REGENERATING SAID METALLIC ALUMINO-SILICATE BY CONTACT WITH AN OXYGEN-CONTAINING GAS AT ELEVATED TEMPERATURE.
Claim 2
Dependent Claim
143 words
AN IMPROVED PROCESS FOR SELECTIVELY REMOVING NORMAL PARAFFIN HYDROCARBONS FROM A HYDROCARBON OIL BOILING BETWEEN ABOUT 100* AND ABOUT 750*F. WHICH COMPRISES CONTACTING SAID OIL IN VAPOR PHASE WITH A CRYSTALLINE METALLIC ALUMINO-SILICATE HAVING UNIFORM PORT SPACES OF ABOUT 5 ANGSTROM UNITS AND CONCOMITANTLY PURGING HYDROCARBON FRAGMENTS FROM THE SAID PORES OF THE CRYSTALLINE METALLIC ALUMINO-SILICATE WITH A GAS HAVING A MOLECULAR DIAMETER LESS THAN ABOUT 5 ANGSTROM UNITS AT A TEMPERATURE OF FROM ABOUT 800 TO ABOUT 1000*F. IN A CONTACTING ZONE, SAID GAS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, NITROGEN, CARBON DIOXIDE AND INERT GAS, WITHDRAWING OIL VAPOR CONTAINING OLEFINS FORMED BY THE SELECTIVE CONVERSION OF NORMAL PARAFFINS FROM SAID ZONE, CONTINUING SAID CONTACTING UNTIL THE VAPOR WITHDRAWN HAS AN UNDERSIRABLY HIGH NORMAL PARAFFIN CONTENT, AND THEREAFTER REGENERATING SAID METALLIC ALUMINO-SILICATE BY CONTACT WITH AN OXYGEN-CONTAINING GAS AT ELEVATED TEMPERATURE.
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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |