Patent US3262278A successfully refreshed from Google Patents.
US3262278A
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US
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Increased ethylene recovery by ethane addition
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1963-08-19
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Granted: 1966-07-26
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Expires: 1983-08-19
Abstract
No abstract record available.
Inventors
- 👤 Thorsten Andrew Carl
- 👤 Robert B Lynch
- 👤 Donald R Schlotterbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:52
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0228; F25J3/0238; C; C07; C07C; C07C7/00; C07C7/09; F25J3/0204; F25J3/0219; F25J3/0233; F25J2205/00; F25J2205/50; F25J2210/00; F25J2210/12; F25J2215/00; F25J2215/62; F25J2245/00; F25J2245/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN A PROCESS FOR RECOVERING ETHYLENE FROM A GASEOUS STREAM CONTAINING 3 TO 6 VOLUME PERCENT ETHYLENE, 0.1 TO 1.0 VOLUME PERCENT ETHANE, AND THE REMAINDER BEING LIGHTER GASES, BY EXPANDING THE SAID GASEOUS STREAM FROM A TEMPERATURE OF -140 TO -165*F. AND A PRESSURE OF 400 TO 600 P.S.I.A. TO A TEMPERATURE OF -170 TO -200*F. AND A PRESSURE OF 50 TO 200 P.S.I.A. TO THEREBY OBTAIN CONDENSATION AND SEPARATION OF A PART OF THE ETHANE AND ETHYLENE FROM THE LIGHTER GASES, THE IMPROVEMENT WHICH COMPRISES ADDING 1 TO 5 VOLUME PERCENT OF ADDITIONAL ETHANE (BASED ON TOTAL GAS) TO THE GAS PRIOR TO EXPANSION THEREBY INCREASING THE AMOUNT OF ETHYLENE CONDENSED.
Claim 2
Dependent Claim
113 words
IN A PROCESS FOR RECOVERING ETHYLENE FROM A GASEOUS STREAM CONTAINING 3 TO 6 VOLUME PERCENT ETHYLENE, 0.1 TO 1.0 VOLUME PERCENT ETHANE, AND THE REMAINDER BEING LIGHTER GASES, BY EXPANDING THE SAID GASEOUS STREAM FROM A TEMPERATURE OF -140 TO -165*F. AND A PRESSURE OF 400 TO 600 P.S.I.A. TO A TEMPERATURE OF -170 TO -200*F. AND A PRESSURE OF 50 TO 200 P.S.I.A. TO THEREBY OBTAIN CONDENSATION AND SEPARATION OF A PART OF THE ETHANE AND ETHYLENE FROM THE LIGHTER GASES, THE IMPROVEMENT WHICH COMPRISES ADDING 1 TO 5 VOLUME PERCENT OF ADDITIONAL ETHANE (BASED ON TOTAL GAS) TO THE GAS PRIOR TO EXPANSION THEREBY INCREASING THE AMOUNT OF ETHYLENE CONDENSED.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |