US3206389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocracking process with desulfurization and denitrogenization of the feed oil and the separation of hydrogen and hydrocarbon gases from the products
Assignee: Pullman Inc
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Filing: 1963-05-13
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Granted: 1965-09-14
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Expires: 1983-05-13
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Gast
- 👤 Frank L Lempert
- 👤 Charles H Viens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:29
CPC Classifications
C; C10; C10G; C10G49/00; C10G49/22; C10G65/00; C10G65/02; C10G65/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A PROCESS FOR RECOVERING A HIGH PERCENTAGE OF A SELECTED HYDROCARBON FROM THE EFFLUENT OF A HYDROCRACKING ZONE EMPLOYED IN THE TREATMENT OF A HYDROCARBON FEED STREAM UNDER AN ELEVATED PRESSURE WHICH COMPRISES: SEPARATING UNREACTED HYDROGEN FROM SUCH AN EFFLUENT, AND PASSING THE REMAINING EFFLUENT AT A PRESSURE SUBSTANTIALLY BELOW THE REACTION PRESSURE INTO A FRACTIONATION ZONE MAINTAINED UNDER CONDITIONS TO SEPARATE A BOTTOMS FRACTION AND AN OVERHEAD FRACTION CONTAINING SAID SELECTED HYDROCARBON, COOLING AND SEPARATING SAID OVERHEAD FRACTION INTO A FIRST LIQUID FRACTION CONTAINING A MAJOR PORTION OF THE SELECTED HYDROCARBON AND A FIRST GASEOUS STREAM CONTAINING A MINOR PORTION THEREOF, CONTACTING A SUITABLE LEAN OIL ABSORBENT FRACTION AND SAID FIRST GASEOUS STREAM IN AN ABSORPTION ZONE TO ABSORB THE SELECTED HYDROCARBON FROM RESULTING TAIL GAS INTO A RESULTING ABSORBER BOTTOMS STREAM AND PASSING SUCH ABSORBER BOTTOMS STREAM INTO THE FRACTIONATION ZONE, SAID FRACTIONATION ZONE BEING MAINTAINED UNDER A PRESSURE ABOVE THE PRESSURE OF THE ABSORPTION ZONE SUCH
Claim 2
Dependent Claim
159 words
A PROCESS FOR RECOVERING A HIGH PERCENTAGE OF A SELECTED HYDROCARBON FROM THE EFFLUENT OF A HYDROCRACKING ZONE EMPLOYED IN THE TREATMENT OF A HYDROCARBON FEED STREAM UNDER AN ELEVATED PRESSURE WHICH COMPRISES: SEPARATING UNREACTED HYDROGEN FROM SUCH AN EFFLUENT, AND PASSING THE REMAINING EFFLUENT AT A PRESSURE SUBSTANTIALLY BELOW THE REACTION PRESSURE INTO A FRACTIONATION ZONE MAINTAINED UNDER CONDITIONS TO SEPARATE A BOTTOMS FRACTION AND AN OVERHEAD FRACTION CONTAINING SAID SELECTED HYDROCARBON, COOLING AND SEPARATING SAID OVERHEAD FRACTION INTO A FIRST LIQUID FRACTION CONTAINING A MAJOR PORTION OF THE SELECTED HYDROCARBON AND A FIRST GASEOUS STREAM CONTAINING A MINOR PORTION THEREOF, CONTACTING A SUITABLE LEAN OIL ABSORBENT FRACTION AND SAID FIRST GASEOUS STREAM IN AN ABSORPTION ZONE TO ABSORB THE SELECTED HYDROCARBON FROM RESULTING TAIL GAS INTO A RESULTING ABSORBER BOTTOMS STREAM AND PASSING SUCH ABSORBER BOTTOMS STREAM INTO THE FRACTIONATION ZONE, SAID FRACTIONATION ZONE BEING MAINTAINED UNDER A PRESSURE ABOVE THE PRESSURE OF THE ABSORPTION ZONE SUCH
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |