US3063934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of aromatics, olefins and sulfur from naphtha feed
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1959-04-10
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Granted: 1962-11-13
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Expires: 1979-04-10
Abstract
No abstract record available.
Inventors
- 👤 William R Epperly
- 👤 John R Tuttle
- 👤 Jr George F Feldbauer
- 👤 Charles W Tyson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:33
CPC Classifications
C; C10; C10G; C10G61/00; C10G61/02; C10G61/06; C10G25/00; C10G25/02; C10G25/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
AN IMPROVED PROCESS FOR PREPARING A NAPHTHA FEED FOR ISOMERIZATION WHICH COMPRISES PASSING SAID NAPHTHA FEED THROUGH A FIRST CONTACTING ZONE CONTAINING A ZEOLITIC MOLECULAR SIEVE OF FROM ABOUT 6 TO 15 ANGSTROM SIZE AT A TEMPERATURE FROM ABOUT 70 TO 500*F., ADSORBING AROMATICS, OLEFINS AND SULFUR FROM SAID FEED IN SAID FIRST CONTACTING ZONE, WITHDRAWING FROM SAID FIRST CONTACTING ZONE A NAPHTHA ESSENTIALLY FREE OF AROMATICS, OLEFINS AND SULFUR PASSING AROMATIC, OLEFIN AND SULFUR-FREE FEED TO AN ISOMERIZATION REACTOR; CYCLICALLY INTERRUPTING THE FLOW OF SAID FEED INTO SAID FIRST CONTACTING ZONE; HEATING ISOMERATE BY PASSING SAID ISOMERATE THROUGH A SECOND CONTACTING ZONE CONTAINING A PREVIOUSLY HEATED AND DESORBED MOLECULAR SIEVE, HEATING AND PURGING SAID FIRST MOLECULAR SIEVE BY PASSING SAID HOT ISOMERATE AT A TEMPERATURE OF FROM ABOUT 500 TO 800*F. THROUGH SAID FIRST CONTACTING ZONE, THEREBY DESORBING THE ADSORBED AROMATICS, OLEFINS
Claim 2
Dependent Claim
143 words
AN IMPROVED PROCESS FOR PREPARING A NAPHTHA FEED FOR ISOMERIZATION WHICH COMPRISES PASSING SAID NAPHTHA FEED THROUGH A FIRST CONTACTING ZONE CONTAINING A ZEOLITIC MOLECULAR SIEVE OF FROM ABOUT 6 TO 15 ANGSTROM SIZE AT A TEMPERATURE FROM ABOUT 70 TO 500*F., ADSORBING AROMATICS, OLEFINS AND SULFUR FROM SAID FEED IN SAID FIRST CONTACTING ZONE, WITHDRAWING FROM SAID FIRST CONTACTING ZONE A NAPHTHA ESSENTIALLY FREE OF AROMATICS, OLEFINS AND SULFUR PASSING AROMATIC, OLEFIN AND SULFUR-FREE FEED TO AN ISOMERIZATION REACTOR; CYCLICALLY INTERRUPTING THE FLOW OF SAID FEED INTO SAID FIRST CONTACTING ZONE; HEATING ISOMERATE BY PASSING SAID ISOMERATE THROUGH A SECOND CONTACTING ZONE CONTAINING A PREVIOUSLY HEATED AND DESORBED MOLECULAR SIEVE, HEATING AND PURGING SAID FIRST MOLECULAR SIEVE BY PASSING SAID HOT ISOMERATE AT A TEMPERATURE OF FROM ABOUT 500 TO 800*F. THROUGH SAID FIRST CONTACTING ZONE, THEREBY DESORBING THE ADSORBED AROMATICS, OLEFINS
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) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |