Patent US4990132A successfully refreshed from Google Patents.
Patent US3852207A successfully refreshed from Google Patents.
US3852207A
Expired / Lapsed
US
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Production of stable lubricating oils by sequential hydrocracking and hydrogenation
Assignee: Chevron USA Inc
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Filing: 1973-03-26
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Granted: 1974-12-03
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Expires: 1993-03-26
Abstract
Abstract A process is disclosed for producing a lubricating oil having good UV stability from a hydrocarbon feedstock boiling in the range 700* to 1,200*F., which comprises: A. catalytically hydrocracking in a hydrocracking zone said feedstock at a per pass conversion of at least 20 volume percent to materials boiling below the initial boiling point of said feedstock; B. catalytically hydrogenating in a hydrogenating zone at least a substantial portion of the effluent from said hydrocracking zone boiling in the range 550*-1,200*F. at hydrogenation conditions, in the presence of a hydrogenation catalyst comprising 1. A REFRACTORY OXIDE, AND 2. A HYDROGENATING COMPONENT COMPRISING A NOBLE METAL; AND C. recovering as a product of the hydrogenating step a lubricating oil having good UV stability.
Inventors
- 👤 B Stangeland
- 👤 C Egan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:03
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/44; C10G45/46; C10G45/52; C10G2400/00; C10G2400/10
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
4 words
A REFRACTORY OXIDE, AND
Claim 2
Dependent Claim
4 words
A REFRACTORY OXIDE, AND
Claim 3
Dependent Claim
137 words
A TWO-STAGE PROCESS FOR PRODUCING A LUBRICATING OIL HAVING GOOD UV STABILITY FROM A HYDROCARBON FEEDSTOCK BOILING IN THE RANGE 700* TO 1,200*F., WHICH COMPRISES: A. CATALYTICALLY HYDROCRACKING SAID FEEDSTOCK IN A HYDROCRACOING ZONE AT HYDROCRACKING CONDITIONS AT A PER PASS CONVENTION OF AT LEAST 20 VOLUME PERCENT TO MATERIALS BOILING BELOW THE INITAL BOILING POINT OF SAID FEEDSTOCK; AND B.CATALYTICALLY HYDROGENATING IN A HYDROGENATING ZONE AT LEAST A SUBSTANTIALLY PORTION OF THE EFFLUENT FROM SAID HYDROCRACKING ZONE BOILING IN THE RANGE 550*-1,200*F. AT HYDROGENATION CONDITIONS INCLUDING: A TEMPERATURE OF FROM 400* TO 700*F., A PRESSURE OF FROM 1,500 TO 5,000 PSIG, AN LHSV OF FROM 0.2 TO 1.5, AND A HYDROGEN SUPPLY RATE OF FROM 500 TO 20,000 SCF BARREL OF SAID EFFLUENT FED TO SAID HYDROGENATING ZONE, IN THE PRESENCE OF A HYDROGENERATION CATALYST COMPRISING
Claim 4
Dependent Claim
137 words
A TWO-STAGE PROCESS FOR PRODUCING A LUBRICATING OIL HAVING GOOD UV STABILITY FROM A HYDROCARBON FEEDSTOCK BOILING IN THE RANGE 700* TO 1,200*F., WHICH COMPRISES: A. CATALYTICALLY HYDROCRACKING SAID FEEDSTOCK IN A HYDROCRACOING ZONE AT HYDROCRACKING CONDITIONS AT A PER PASS CONVENTION OF AT LEAST 20 VOLUME PERCENT TO MATERIALS BOILING BELOW THE INITAL BOILING POINT OF SAID FEEDSTOCK; AND B.CATALYTICALLY HYDROGENATING IN A HYDROGENATING ZONE AT LEAST A SUBSTANTIALLY PORTION OF THE EFFLUENT FROM SAID HYDROCRACKING ZONE BOILING IN THE RANGE 550*-1,200*F. AT HYDROGENATION CONDITIONS INCLUDING: A TEMPERATURE OF FROM 400* TO 700*F., A PRESSURE OF FROM 1,500 TO 5,000 PSIG, AN LHSV OF FROM 0.2 TO 1.5, AND A HYDROGEN SUPPLY RATE OF FROM 500 TO 20,000 SCF BARREL OF SAID EFFLUENT FED TO SAID HYDROGENATING ZONE, IN THE PRESENCE OF A HYDROGENERATION CATALYST COMPRISING
Claim 5
Dependent Claim
51 words
The process of claim 1 wherein said hydrogenation conditions include a temperature of from 500* to 600*F., a pressure of from 2,000 to 3,000 psig, an LHSV of from 0.2 to 1.0, and a hydrogen supply rate of from 2,000 to 10,000 SCF/barrel of said effluent fed to said hydrogenating zone.
Claim 6
Dependent Claim
16 words
a hydrogenating component comprising a noble metal; to produce a lubricating oil having good UV stability.
Claim 7
Dependent Claim
16 words
a hydrogenating component comprising a noble metal; to produce a lubricating oil having good UV stability.
Claim 8
Dependent Claim
16 words
A HYDROGENATING COMPONENT COMPRISING A NOBLE METAL; TO PRODUCE A LUBRICATING OIL HAVING GOOD UV STABILITY.
Claim 9
Dependent Claim
16 words
A HYDROGENATING COMPONENT COMPRISING A NOBLE METAL; TO PRODUCE A LUBRICATING OIL HAVING GOOD UV STABILITY.
Claim 10
Dependent Claim
28 words
The process of claim 1 wherein said hydrocarbon feedstock is selected from the class consisting of heavy run gas oil, deasphalted oil, vacuum gas oil and atmospheric residua.
Claim 11
Dependent Claim
15 words
The process of claim 1 wherein said hydrogenation catalyst comprises palladium on an alumina-silica support.
Claim 12
Dependent Claim
37 words
The process of claim 4 wherein said hydrogenation catalyst has an alumina to silica weight ratio of 40-60 to 95-5 and said noble metal is palladium present in an amount of from 0.2 to 10 weight percent.
Claim 13
Dependent Claim
61 words
The process of claim 5 wherein said hydrogenation conditions include a temperature in the range of 500* to 600*F., a pressure in the range of from about 2,000 to 3,000 psig, an LHSV of from about 0.2 to about 1.0, and a hydrogen supply rate of from about 2,000 to 10,000 SCF per barrel of hydrocarbon feed to said hydrogenation zone.
Claim 14
Dependent Claim
26 words
The process of claim 6 wherein said hydrogenation catalyst has a silica to alumina weight ratio of 40 to 60 and contains 0.4 weight percent palladium.
Claim 15
Dependent Claim
20 words
The process of claim 7 wherein said lubricating oil has, after dewaxing, a UV stability of at least 9 hours.
Claim 16
Dependent Claim
25 words
The process of claim 6 wherein said hydrogenation catalyst was subjected to said heat treatment at a temperature in the range of 1,200* to 1,800*F.
Claim 17
Dependent Claim
18 words
The process of claim 7 wherein said hydrogenation catalyst was subjected to said heat treatment at about 1,400*F.
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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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |