Patent US3095293A successfully refreshed from Google Patents.
US3095293A
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Production and recovery of ethylene
Assignee: Phillips Petroleum Co
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Filing: 1960-11-30
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Granted: 1963-06-25
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Expires: 1980-11-30
Abstract
No abstract record available.
Inventors
- 👤 Richard D Kuerston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:56
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0204; F25J3/0219; F25J3/0228; F25J3/0233; F25J3/0238; F25J3/0252; F25J2200/00; F25J2200/74; F25J2205/00; F25J2205/02; F25J2205/04; F25J2210/00; F25J2210/12; F25J2215/00; F25J2215/62; F25J2270/00; F25J2270/12; F25J2270/42
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
129 words
A PROCESS COMPRISING INCOMPLETELY BURNING A HYDROCARBON NAPHTHA HAVING AN AVERAGE MOLECULAR WEIGHT OF ABOUT 90 IN THE PRESENCE OF STEAM, AS SUBSEQUENTLY PRODUCED, THEREBY PRODUCING A HYDROCARBON CONVERSION EFFLUENT COMPRISING ETHYLENE AND OTHER DIFFICULTY CONDENSIBLE COMPONENTS, CHILLING SAID EFFLUENT BY INDIRECT HEAT EXCHANGE WITH A COLD PROCESS STREAM AS SUBSEQUENTLY PRODUCED, FURTHER CHILLING THE ONCE-CHILLED STREAM AND CONDENSING AT LEAST A PORTION THEREOF BY INDIRECT HEAT EXCHANGE WITH AN EXPANDING REFRIGERANT AS SUBSEQUENTLY PRODUCED, FROM THIS FURTHER CHILLING AND CONDENSING STEP SEPARATING A CONDENSATE FROM AN UNCONDENSATE PHASE, RECOVERING ETHYLENE FROM THE CONDENSATE AS THE MAIN PRODUCT OF THE PROCESS, SAID UNCONDENSED PHASE BEING THE COLD PROCESS STREAM AS SUBSEQUENTLY PRODUCED, WITHDRAWING SAID PROCESS STREAM FROM THE HEAT EXCHANGE OPERATION, BURNING THE WITHDRAWN PROCESS STREAM IN A COMBUSTION
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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) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |