US2777305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation and recovery of ethylene
Assignee: Phillips Petroleum Co
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Filing: 1953-12-28
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Granted: 1957-01-15
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Expires: 1973-12-28
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Davison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:05
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0228; F25J3/0242; C; C07; C07C; C07C7/00; C07C7/04; F25J3/0204; F25J3/0219; F25J3/0233; F25J3/0238; F25J2200/00; F25J2200/72; F25J2200/74; F25J2210/00; F25J2210/12; F25J2215/00; F25J2215/62; F25J2215/64; F25J2270/00; F25J2270/88
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
294 words
A PROCESS FOR THE RECOVERY OF ETHYLENE FROM A VAPOROUS MIXTURE CONTAINING ETHYLENE AT A SUPERATMOSPHERIC PRESURE COMPRISING THE STEPS OF SEPARATING C4 AND HIGHER BOILING HYDROCARBONS FROM SAID VAPOROUS MIXTURE AND RECOVERING THESE C4 AND HIGHER BOILING HYDROCARBONS AS ONE PRODUCT OF THE PROCESS, CHILLING THE PROPANE AND LOWER BOILING HYDROCARBONS AND HYDROGEN, FACTIONATING THIS CHILLED STREAM OF PROPANE AND LOWER BOILING HYDROCARBONS AND HYDROGEN IN A DEMETHANIZING OPERATION TO PRODUCE AN OVERHEAD INTERMEDIATE PRODUCT COMPRISING METHANE AND A BOTTOM PRODUCT COMPRISING C2 AND C3 HYDROCARBONS, REDUCING THE PRESSURE OF THE C2 AND C3 HYDROCARBON BOTTOM MATERIAL FROM SAID DEMETHANIZING OPERATION AND FRACTIONATING SAME IN A DEETHANIZING OPERATION TO PRODUCE AN OVERHEAD INTERMEDIATE PRODUCT COMPRISING ETHANE AND ETHYLENE AND A BOTTOM INTERMEDIATE PRODUCT COMPRISING C3 HYDROCARBONS, CONDENSING THE ETHANE-ETHYLENE OVERHEAD INTERMEDIATE PRODUCT, RETURNING A PORTION OF THE EHTANE-ETHYLENE CONDENSATE TO REFLUX THE DEETHANIZING OPERATION, REDUCING THE PRESSURE ON THE REMAINDER OF THE ETHANE-ETHYLENE CONDENSATE AND FRACTIONATING SAME TO PRODUCE AN OVERHEAD INTERMEDIATE ETHYLENE PRODUCT AND AN ETHANE BOTTOMS PRODUCT, WITHDRAWING THIS LATTER ETHANE AS ONE PRODUCT OF THE PROCESS, CONDENSING A PORTION OF SAID OVERHEAD INTERMEDIATE ETHYLENE PRODUCT, RETURNING THIS CONDENSATE INTO THE ETHYLENE-ETHANE FRACTIONATING OPERATION TO REFLUX SAME, WITHDRAWING THE UNCONDENSED PORTION OF THE ETHYLENE AS THE MAIN PRODUCT OF THE PROCESS, WITHDRAWING THE C3 HYDROCARBON BOTTOM PRODUCT FROM SAID DEETHANIZING OPERATION AND PASSING SAME IN INDIRECT HEAT EXCHANGE WITH THE KETTLE MATERIAL IN SAID DEMETHANIZING OPERATION TO REBOIL SAME, WITHDRAWING SAID C3 HYDROCARBON BOTTOM PRODUCT FROM THE DEMETHANIZING REBOILING OPERATION, INTRODUCING A PORTION OF THIS WITHDRAWN LIQUID C3 PRODUCT INTO THE UPPER PORTION OF SAID DEMETHANIZING OPERATION TO SUPPLY LIQUID ABSORBENT AND REFLUX FOR SAID DEMETHANIZING OPERATION, AND WITHDRAWING THE REMAINDER OF THE C3 HYDROCARBON AS ANOTHER PRODUCT OF THE PROCESS.
Claim 2
Dependent Claim
294 words
A PROCESS FOR THE RECOVERY OF ETHYLENE FROM A VAPOROUS MIXTURE CONTAINING ETHYLENE AT A SUPERATMOSPHERIC PRESURE COMPRISING THE STEPS OF SEPARATING C4 AND HIGHER BOILING HYDROCARBONS FROM SAID VAPOROUS MIXTURE AND RECOVERING THESE C4 AND HIGHER BOILING HYDROCARBONS AS ONE PRODUCT OF THE PROCESS, CHILLING THE PROPANE AND LOWER BOILING HYDROCARBONS AND HYDROGEN, FACTIONATING THIS CHILLED STREAM OF PROPANE AND LOWER BOILING HYDROCARBONS AND HYDROGEN IN A DEMETHANIZING OPERATION TO PRODUCE AN OVERHEAD INTERMEDIATE PRODUCT COMPRISING METHANE AND A BOTTOM PRODUCT COMPRISING C2 AND C3 HYDROCARBONS, REDUCING THE PRESSURE OF THE C2 AND C3 HYDROCARBON BOTTOM MATERIAL FROM SAID DEMETHANIZING OPERATION AND FRACTIONATING SAME IN A DEETHANIZING OPERATION TO PRODUCE AN OVERHEAD INTERMEDIATE PRODUCT COMPRISING ETHANE AND ETHYLENE AND A BOTTOM INTERMEDIATE PRODUCT COMPRISING C3 HYDROCARBONS, CONDENSING THE ETHANE-ETHYLENE OVERHEAD INTERMEDIATE PRODUCT, RETURNING A PORTION OF THE EHTANE-ETHYLENE CONDENSATE TO REFLUX THE DEETHANIZING OPERATION, REDUCING THE PRESSURE ON THE REMAINDER OF THE ETHANE-ETHYLENE CONDENSATE AND FRACTIONATING SAME TO PRODUCE AN OVERHEAD INTERMEDIATE ETHYLENE PRODUCT AND AN ETHANE BOTTOMS PRODUCT, WITHDRAWING THIS LATTER ETHANE AS ONE PRODUCT OF THE PROCESS, CONDENSING A PORTION OF SAID OVERHEAD INTERMEDIATE ETHYLENE PRODUCT, RETURNING THIS CONDENSATE INTO THE ETHYLENE-ETHANE FRACTIONATING OPERATION TO REFLUX SAME, WITHDRAWING THE UNCONDENSED PORTION OF THE ETHYLENE AS THE MAIN PRODUCT OF THE PROCESS, WITHDRAWING THE C3 HYDROCARBON BOTTOM PRODUCT FROM SAID DEETHANIZING OPERATION AND PASSING SAME IN INDIRECT HEAT EXCHANGE WITH THE KETTLE MATERIAL IN SAID DEMETHANIZING OPERATION TO REBOIL SAME, WITHDRAWING SAID C3 HYDROCARBON BOTTOM PRODUCT FROM THE DEMETHANIZING REBOILING OPERATION, INTRODUCING A PORTION OF THIS WITHDRAWN LIQUID C3 PRODUCT INTO THE UPPER PORTION OF SAID DEMETHANIZING OPERATION TO SUPPLY LIQUID ABSORBENT AND REFLUX FOR SAID DEMETHANIZING OPERATION, AND WITHDRAWING THE REMAINDER OF THE C3 HYDROCARBON AS ANOTHER PRODUCT OF THE PROCESS.
References Cited (Backward Citations)
US2600110A
Cited
US2619814A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |