US3169151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Up-grading a hydrocarbon stream to produce high purity cyclohexane and benzene
Assignee: Phillips Petroleum Co
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Filing: 1961-09-19
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Granted: 1965-02-09
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Expires: 1981-09-19
Abstract
No abstract record available.
Inventors
- 👤 George E Merryfield
- 👤 John G Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:05
CPC Classifications
C; C10; C10G; C10G69/00; C10G69/02; C10G69/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A PROCESS FOR UP-GRADING A HYDROCARBON MIXTURE CONTAINING C6-C7 HYDROCARBON COMPRISING REFORMING SAID MIXTURE TO PRODUCE A STREAM COMPRISING PARAFFINS, NAPHTHENES, AND AROMATICS INCLUDING BENZENE; SEPARATING SAID STREAM COMPRISING PARAFFINS, NAPHTHENES AND AROMATICS INCLUDING BENZENE BY SOLVENT EXRACITONTO PRODUCE AN EXTRACT STREAM COMPRISING AROMATICS AND A RAFFINATE STREAM COMPRISING PARAFFINS AND NAPHTHENES; WITHDRAWING A FIRST PORTION OF SAID EXTRACT STREAM AS A HIGH-PURITY BENZENE PRODUCT; HYDROGENATING A SECOND PORITON OF SAID EXTRACT STREAM TO PRODUCE A HIGH-PURITY CYCLOHEXANE PRODUCT; FRACTIONATING SAID RAFFINATE STREAM TO PRODUCE A STREAM COMPRISING METHYCLCLOPENTANE AND LIGHTER AND A STREAM COMPRISING CYCLOHEXANE; RETURNING AT LEAST A PORTION OF SAID STREAM COMPRISING CYCLOHEXANE TO SAID MIXTURE; ISOMERIZING SAID STREAM COMPRISING METHYLCCLOPENTANE AND LIGHTER; AND SEPARATING FROM THE RESULTING ISOMERIZATE A HIGH-PURITY CYCLOHEXANE PRODUCT.
Claim 2
Dependent Claim
126 words
A PROCESS FOR UP-GRADING A HYDROCARBON MIXTURE CONTAINING C6-C7 HYDROCARBON COMPRISING REFORMING SAID MIXTURE TO PRODUCE A STREAM COMPRISING PARAFFINS, NAPHTHENES, AND AROMATICS INCLUDING BENZENE; SEPARATING SAID STREAM COMPRISING PARAFFINS, NAPHTHENES AND AROMATICS INCLUDING BENZENE BY SOLVENT EXRACITONTO PRODUCE AN EXTRACT STREAM COMPRISING AROMATICS AND A RAFFINATE STREAM COMPRISING PARAFFINS AND NAPHTHENES; WITHDRAWING A FIRST PORTION OF SAID EXTRACT STREAM AS A HIGH-PURITY BENZENE PRODUCT; HYDROGENATING A SECOND PORITON OF SAID EXTRACT STREAM TO PRODUCE A HIGH-PURITY CYCLOHEXANE PRODUCT; FRACTIONATING SAID RAFFINATE STREAM TO PRODUCE A STREAM COMPRISING METHYCLCLOPENTANE AND LIGHTER AND A STREAM COMPRISING CYCLOHEXANE; RETURNING AT LEAST A PORTION OF SAID STREAM COMPRISING CYCLOHEXANE TO SAID MIXTURE; ISOMERIZING SAID STREAM COMPRISING METHYLCCLOPENTANE AND LIGHTER; AND SEPARATING FROM THE RESULTING ISOMERIZATE A HIGH-PURITY CYCLOHEXANE PRODUCT.
References Cited (Backward Citations)
US2821561A
Cited
US2872492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-09 | 1968-08-10 | 1969-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-09 | 1972-08-10 | 1973-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-09 | 1976-08-10 | 1977-02-09 | $7700.00 | Window Closed / Lapsed |