Patent US4075085A successfully refreshed from Google Patents.
US4075085A
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Process for treating arsenic-containing hydrocarbon feedstocks
Assignee: Honeywell UOP LLC
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Filing: 1976-09-20
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Granted: 1978-02-21
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Expires: 1996-09-20
Abstract
Abstract Oil-soluble nickel, cobalt, or copper-containing additives are blended with a hydrocarbon feedstock containing arsenic, and the resulting solution is heated to at least 300° F to convert a large proportion of the arsenic to forms removable by conventional filtration or desalting techniques. Preferably, the feedstock-additive solution is heated to at least 500° F and is then distilled so as to produce one or more distillate fractions consisting of components that boil at atmospheric pressure at temperatures in the range 400°-900° F; such distillate fractions will contain arsenic in a concentration less that 20% of that of the feedstock.
Inventors
- 👤 Dean Arthur Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:30
CPC Classifications
C; C10; C10G; C10G17/00; C10G17/095; C10G29/00; C10G29/06
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
136 words
A process comprising (a) heating at a temperature of at least 300° F a liquid solution comprising (1) a hydrocarbon feedstock containing at least 2 ppmw arsenic, said hydrocarbon feedstock being a synthetic crude, or fraction thereof, obtained from oil shale, solid coal, or tar sands, and (2) an oil-soluble additive comprising one or more nickel, copper, or cobalt components, said heating being carried out for a time sufficient to convert at least some of the arsenic in said solution to arsenic components selected from the class consisting of those extractable in water and those that exist as an undissolved solid at 100°-250° F; (b) separating at least some of said arsenic components from said solution; and (c) withdrawing from step (b) a purified oil containing arsenic in a concentration less than that of the feedstock.
Claim 2
Dependent Claim
136 words
A process comprising (a) heating at a temperature of at least 300° F a liquid solution comprising (1) a hydrocarbon feedstock containing at least 2 ppmw arsenic, said hydrocarbon feedstock being a synthetic crude, or fraction thereof, obtained from oil shale, solid coal, or tar sands, and (2) an oil-soluble additive comprising one or more nickel, copper, or cobalt components, said heating being carried out for a time sufficient to convert at least some of the arsenic in said solution to arsenic components selected from the class consisting of those extractable in water and those that exist as an undissolved solid at 100°-250° F; (b) separating at least some of said arsenic components from said solution; and (c) withdrawing from step (b) a purified oil containing arsenic in a concentration less than that of the feedstock.
Claim 3
Dependent Claim
28 words
A process as defined in claim 1 wherein said additive comprises one or more nickel components and said heating is at a temperature of at least 500° F.
Claim 4
Dependent Claim
24 words
A process as defined in claim 2 wherein said purified oil contains arsenic in a concentration less than 40% of that of the feedstock.
Claim 5
Dependent Claim
16 words
A process as defined in claim 2 wherein said feedstock contains at least 20 ppmw arsenic.
Claim 6
Dependent Claim
109 words
A process comprising: (a) heating at a temperature of at least 300° F a liquid solution comprising (1) a hydrocarbon feedstock containing at least 2 ppmw arsenic, said hydrocarbon feedstock being a synthetic crude, or fraction thereof, obtained from oil shale, solid coal, or tar sands, and (2) an oil-soluble additive comprising one or more nickel components; (b) distilling the heated solution into a residual fraction and at least one distillate fraction comprising components that boil at atmospheric pressure at temperatures in the range 400°-900° F; and (c) withdrawing from said distilling step a distillate fraction containing arsenic in a concentration less than 50% of that of the feedstock.
Claim 7
Dependent Claim
109 words
A process comprising: (a) heating at a temperature of at least 300° F a liquid solution comprising (1) a hydrocarbon feedstock containing at least 2 ppmw arsenic, said hydrocarbon feedstock being a synthetic crude, or fraction thereof, obtained from oil shale, solid coal, or tar sands, and (2) an oil-soluble additive comprising one or more nickel components; (b) distilling the heated solution into a residual fraction and at least one distillate fraction comprising components that boil at atmospheric pressure at temperatures in the range 400°-900° F; and (c) withdrawing from said distilling step a distillate fraction containing arsenic in a concentration less than 50% of that of the feedstock.
Claim 8
Dependent Claim
19 words
A process as defined in claim 5 wherein said heating is at a temperature of at least 500° F.
Claim 9
Dependent Claim
31 words
A process as defined in claim 6 wherein said feedstock is a shale oil and said distillate fraction contains arsenic in a concentration less than 20% of that of the feedstock.
Claim 10
Dependent Claim
16 words
A process as defined in claim 6 wherein said feedstock contains at least 20 ppmw arsenic.
Claim 11
Dependent Claim
27 words
A process as defined in claim 8 wherein said distillate fraction consists of components that boil at atmospheric pressure at temperatures in the range of 400°-900° F.
Claim 12
Dependent Claim
27 words
A process as defined in claim 8 wherein said distillate fraction consists of components that boil at atmospheric pressure at temperatures in the range of 400°-700° F.
Claim 13
Dependent Claim
65 words
A process as defined in claim 6 comprising the further steps of: (d) separating from said residual fraction at least some arsenic components selected from the class consisting of those extractable in water and those that exist as an undissolved solid at 100°-250° F; and (e) withdrawing from step (d) a purified residual fraction containing arsenic in a concentration less than that of the feedstock.
Claim 14
Dependent Claim
33 words
A process as defined in claim 11 wherein said feedstock contains at least 20 ppmw arsenic and said distillate fraction contains arsenic in a concentration less than 20% of that of the feedstock.
Claim 15
Dependent Claim
24 words
A process as defined in claim 12 wherein said residual fraction contains arsenic in a concentration less than 40% of that of the feedstock.
Claim 16
Dependent Claim
132 words
A process comprising: (a) heating at a temperature of at least 300° F a liquid solution comprising (1) a hydrocarbon feedstock containing at least 2 ppmw arsenic, said hydrocarbon feedstock being a synthetic crude, or fraction thereof, obtained from oil shale, solid coal, or tar sands, and (2) an oil-soluble additive comprising one or more nickel, copper, or cobalt components; (b) distilling the heated solution into a residual fraction and at least one distillate fraction; (c) separating from said residual fraction at least some arsenic components selected from the class consisting of those extractable in water and those that exist as an undissolved solid at 100°-250° F in said residual fraction; and (d) withdrawing from step (c) a purified residual fraction containing arsenic in a concentration less than that of the feedstock.
Claim 17
Dependent Claim
132 words
A process comprising: (a) heating at a temperature of at least 300° F a liquid solution comprising (1) a hydrocarbon feedstock containing at least 2 ppmw arsenic, said hydrocarbon feedstock being a synthetic crude, or fraction thereof, obtained from oil shale, solid coal, or tar sands, and (2) an oil-soluble additive comprising one or more nickel, copper, or cobalt components; (b) distilling the heated solution into a residual fraction and at least one distillate fraction; (c) separating from said residual fraction at least some arsenic components selected from the class consisting of those extractable in water and those that exist as an undissolved solid at 100°-250° F in said residual fraction; and (d) withdrawing from step (c) a purified residual fraction containing arsenic in a concentration less than that of the feedstock.
Claim 18
Dependent Claim
28 words
A process as defined in claim 14 wherein said additive comprises one or more nickel components and said heating is at a temperature of at least 500° F.
Claim 19
Dependent Claim
16 words
A process as defined in claim 15 wherein said feedstock contains at least 20 ppmw arsenic.
Claim 20
Dependent Claim
31 words
A process as defined in claim 16 wherein said feedstock is a shale oil and said residual fraction contains arsenic in a concentration less than 40% of that of the feedstock.
Claim 21
Dependent Claim
23 words
A process as defined in claim 17 wherein said solution contains dissolved nickel in an atomic ratio to arsenic of at least 1:1.
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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) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |