US3153679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of ethylene free from acetylene
Assignee: Linde GmbH
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Filing: 1962-10-04
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Granted: 1964-10-20
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Expires: 1982-10-04
Abstract
No abstract record available.
Inventors
- 👤 Rottmayr Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:25
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0228; F25J3/0238; C; C07; C07C; C07C7/00; C07C7/005; F25J3/0204; F25J3/0219; F25J2205/00; F25J2205/30; F25J2210/00; F25J2210/12; F25J2215/00; F25J2215/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A PROCESS FOR THE PRODUCTION OF EHTYLENE FREE FROM ACETYLENE, WHICH PROCESS COMPRISES THE STEPS OF: (A) SEPARATING FROM A CRUDE GAS A C2-FRACTION CONSISTING ESSENTIALLY OF ETHYLENE, ETHANE, AND ACETYLENE; (B) SEPARATING SAID C2-FRACTION TO OBTAIN AN ETHANE FRACTION, AN ETHYLENE FRACTION CONTAINING UP TO 10 P.P.M. ACETYLENE, AND A WASTE GAS FRACTION CONSISTING ESSENTIALLY OF ACDTYLENE, ETHANE AND ETHYLENE; (C) ADMIXING HYDROGEN TO SAID WASTE GAS; (D) CATALYTICALLY HYDROGENATING SAID WASTE GAS TO CONVERT ACETYLENE TO ETHYLENE; (E) RECYCLING THE RESULTANT WASTE GAS TO THE CRUDE GAS WHEREBY THE OVERALL YIELD OF ETHYLENE FROM THE CRUDE GAS IS INCREASED, THE REGULATION AND CONTROL OF THE HYDROGENATION RECTION IS SIMPLIFIED, AND WHEREBY THERE IS A CONSIDERABLE IMPROVEMENT IN THE PROCESS ECONOMICS OF CATALYTICALLY HYDROGENATING AND REMOVING ACETYLENE FROM ETHYLENE.
Claim 2
Dependent Claim
130 words
A PROCESS FOR THE PRODUCTION OF EHTYLENE FREE FROM ACETYLENE, WHICH PROCESS COMPRISES THE STEPS OF: (A) SEPARATING FROM A CRUDE GAS A C2-FRACTION CONSISTING ESSENTIALLY OF ETHYLENE, ETHANE, AND ACETYLENE; (B) SEPARATING SAID C2-FRACTION TO OBTAIN AN ETHANE FRACTION, AN ETHYLENE FRACTION CONTAINING UP TO 10 P.P.M. ACETYLENE, AND A WASTE GAS FRACTION CONSISTING ESSENTIALLY OF ACDTYLENE, ETHANE AND ETHYLENE; (C) ADMIXING HYDROGEN TO SAID WASTE GAS; (D) CATALYTICALLY HYDROGENATING SAID WASTE GAS TO CONVERT ACETYLENE TO ETHYLENE; (E) RECYCLING THE RESULTANT WASTE GAS TO THE CRUDE GAS WHEREBY THE OVERALL YIELD OF ETHYLENE FROM THE CRUDE GAS IS INCREASED, THE REGULATION AND CONTROL OF THE HYDROGENATION RECTION IS SIMPLIFIED, AND WHEREBY THERE IS A CONSIDERABLE IMPROVEMENT IN THE PROCESS ECONOMICS OF CATALYTICALLY HYDROGENATING AND REMOVING ACETYLENE FROM ETHYLENE.
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) | 1967-10-20 | 1968-04-20 | 1968-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-20 | 1972-04-20 | 1972-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-20 | 1976-04-20 | 1976-10-20 | $7700.00 | Window Closed / Lapsed |