US4016067A
Expired / Lapsed
US
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Process for demetalation and desulfurization of petroleum oils
Assignee: Mobil Oil AS
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Filing: 1975-02-21
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Granted: 1977-04-05
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Expires: 1995-02-21
Abstract
Abstract This invention is concerned with removing metal and sulfur contaminants from residual oil fractions by catalytic contact in a novel dual bed system. In this process the oil is first contacted with a catalyst comprising a Group VIB metal and an iron group metal oxide, such as a mixture of cobalt and molybdenum oxides, composited with an alumina support that contains delta or theta phase alumina, the catalyst having at least 60% of its pore volume in pores of 100A to 200A diameter, at least about 5% of its pore volume in pores having a diameter greater than 500A, and a surface area up to about 110m2/g. The oil is then contacted with a second catalyst of the high surface-area, cobalt-molybdenum on alumina type. The second catalyst has a major fraction of its pores in the 30 to 100A diameter range.
Inventors
- 👤 Ronald H. Fischer
- 👤 Donald Milstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:47
CPC Classifications
B; B01; B01J; B01J35/00; B01J35/60; B01J35/63; B01J35/633; B01J35/635; B01J35/64; B01J35/647; C; C10; C10G; C10G2300/00; C10G2300/10; C10G2300/107
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
209 words
A process for catalytically demetalizing and desulfurizing a residual oil, said process consisting essentially of: passing a mixture of hydrogen and said oil at a hydrogen pressure of about 500 to 3,000 psig, a temperature of about 600° to 850° F, and a space velocity of 0.1 to 5.0 LHSV, through a trickle bed of first catalyst, said first catalyst comprising the oxides or sulfides of a Group VIB metal and an iron group metal on a support comprising a delta or theta phase alumina, said first catalyst having also at least about 60 percent of its pore volume in pores with diameters of about 100 to 200A, at least about 5 percent of its pore volume in pores greater than 500A., and a surface area of up to about 110 m 2 /g; and then passing said mixture of hydrogen and said oil through a bed of second catalyst disposed downstream of said first catalyst, said second catalyst comprising the oxides or sulfides of a Group VIB metal and an iron group metal on an alumina support, said second catalyst having a surface area of at least 150 m 2 /g and at least 50 percent of its pore volume in pores with diameters of 30 to 100A.
Claim 2
Dependent Claim
209 words
A process for catalytically demetalizing and desulfurizing a residual oil, said process consisting essentially of: passing a mixture of hydrogen and said oil at a hydrogen pressure of about 500 to 3,000 psig, a temperature of about 600° to 850° F, and a space velocity of 0.1 to 5.0 LHSV, through a trickle bed of first catalyst, said first catalyst comprising the oxides or sulfides of a Group VIB metal and an iron group metal on a support comprising a delta or theta phase alumina, said first catalyst having also at least about 60 percent of its pore volume in pores with diameters of about 100 to 200A, at least about 5 percent of its pore volume in pores greater than 500A., and a surface area of up to about 110 m 2 /g; and then passing said mixture of hydrogen and said oil through a bed of second catalyst disposed downstream of said first catalyst, said second catalyst comprising the oxides or sulfides of a Group VIB metal and an iron group metal on an alumina support, said second catalyst having a surface area of at least 150 m 2 /g and at least 50 percent of its pore volume in pores with diameters of 30 to 100A.
Claim 3
Dependent Claim
20 words
The process as claimed in claim 1 wherein said first catalyst occupies 40% to 80% of the total catalyst volume.
Claim 4
Dependent Claim
20 words
The process as claimed in claim 1 wherein said first catalyst and said second catalyst are contained in one reactor.
Claim 5
Dependent Claim
20 words
The process as claimed in claim 1 wherein said first catalyst and said second catalyst are contained in separate reactors.
Claim 6
Dependent Claim
20 words
The process as claimed in claim 2 wherein said first catalyst and said second catalyst are contained in one reactor.
Claim 7
Dependent Claim
20 words
The process as claimed in claim 2 wherein said first catalyst and said second catalyst are contained in separate reactors.
Claim 8
Dependent Claim
47 words
The process of claim 2 and wherein said process includes the step of cracking said oil following said demetalation and desulfurization steps, said cracking being done at 800° to 1500° F temperature, 1 to 5 atmospheres pressure and a space velocity of about 1 to 1000 WHSV.
Claim 9
Dependent Claim
38 words
The process of claim 2 and wherein said process includes the step of coking said oil following said demetalation and desulfurization steps, said coking being done at 800° to 1100° F temperature and 1 to 10 atmospheres pressure.
Claim 10
Dependent Claim
38 words
The process of claim 2 and wherein said process includes the step of hydrocracking said oil following said demetalation and desulfurization steps, said hydrocracking being done at 400° to 1000° F temperature and 100 to 3500 psig pressure.
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) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |