Patent US4006077A successfully refreshed from Google Patents.
US4006077A
Expired / Lapsed
US
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Demetallization of asphaltene-containing petroleum hydrocarbons
Assignee: Wintershall Dea International AG
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Filing: 1975-05-16
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Granted: 1977-02-01
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Expires: 1995-05-16
Abstract
Abstract Metals are removed from metal- and asphaltene-containing petroleum oils by contacting the oil with pellets of sorptive type attapulgus clay which has been extruded and then dried at a temperature between about 100° and 650° C. to a volatile content of less than 20 weight %.
Inventors
- 👤 Hans-Georg Wegner
- 👤 Wolfgang Kruger
- 👤 Gunter Sochtig
- 👤 Gunter Brandes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:11
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/003; C10G2300/00; C10G2300/10; C10G2300/107
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
82 words
A process for the removal of metals from petroleum hydrocarbon charge materials containing metals and asphaltenes as contaminants in the presence of a clay mineral comprising contacting the charge materials at a temperature between about 200° and 500° and a pressure between about 1 and 300 bar in the presences of hydrogen with sorptive type attapulgus clay which has been extruded and then dried at a temperature between 100° and 650° C. until it contains less than 20 wt. % volatile components.
Claim 2
Dependent Claim
82 words
A process for the removal of metals from petroleum hydrocarbon charge materials containing metals and asphaltenes as contaminants in the presence of a clay mineral comprising contacting the charge materials at a temperature between about 200° and 500° and a pressure between about 1 and 300 bar in the presences of hydrogen with sorptive type attapulgus clay which has been extruded and then dried at a temperature between 100° and 650° C. until it contains less than 20 wt. % volatile components.
Claim 3
Dependent Claim
22 words
A process according to claim 1 in which the attapulgus clay is dried at a temperature between 150° C. and 400° C.
Claim 4
Dependent Claim
35 words
A process according to claim 1 in which the clay is extruded through an opening having a maximum cross-sectional dimension not greater then 4.76 mm. and a minimum cross-sectional dimension not less than 0.177 mm.
Claim 5
Dependent Claim
29 words
A process according to claim 3 in which the maximum cross-sectional dimension is not greater than 2.38 mm. and the minimum cross-sectional dimension is not less than 1.19 mm.
Claim 6
Dependent Claim
18 words
A process according to claim 1 in which the contacting is carried out in the presence of hydrogen.
Claim 7
Dependent Claim
55 words
A process according to claim 1 in which the charge materials are passed through a particulate bed of said sorptive type attapulgus clay at a space velocity between about 0.1 and 5.0 v/v/hr. and in the presence of hydrogen introduced at a rate between about 100- 5000 Nm 3 per m 3 of charge materials.
Claim 8
Dependent Claim
30 words
A process according to claim 6 in which the particles have a maximum cross-sectional dimension not greater than 4.76 mm. and a minimum cross-sectional dimension not less than 0.177 mm.
Claim 9
Dependent Claim
30 words
A process according to claim 7 in which the particles have a maximum cross-sectional dimension not greater than 2.38 mm. and a minimum cross-sectional dimension not less than 1.19 mm.
References Cited (Backward Citations)
US2905625A
Cited
US3530066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-01 | 1980-08-02 | 1981-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-01 | 1984-08-02 | 1985-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-01 | 1988-08-02 | 1989-02-01 | $7700.00 | Window Closed / Lapsed |