US4029571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing contaminant from hydrocarbonaceous fluid
Assignee: Atlantic Richfield Co
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Filing: 1975-02-25
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Granted: 1977-06-14
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Expires: 1995-02-25
Abstract
Abstract A method of removing arsenic and selenium contaminants from a hydrocarbonaceous fluid, such as a synthetic crude oil and fractions thereof, is disclosed. In the disclosed method, the hydrocarbonaceous fluid, containing the contaminant is subjected to a heat treating step for a period of time sufficient to form a precipitate. The thus treated hydrocarbonaceous fluid can then be separated from the precipitate to recover a hydrocarbonaceous fluid having a reduced contaminant content.
Inventors
- 👤 Daniel J. Curtin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:14
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
89 words
A method for removing a contaminant comprising at least one of arsenic and selenium from a synthetic hydrocarbonaceous fluid feed stream obtained from oil shale comprising the steps of noncatalytically heat treating said feed stream at a temperature of at least about 600° F and at a pressure such that a substantial portion of said feed is maintained in a liquid phase for a period of time sufficient to form a precipitate; and thereafter separating at least a portion of said precipitate from the thus treated synthetic hydrocarbonaceous fluid.
Claim 2
Independent Claim
89 words
A method for removing a contaminant comprising at least one of arsenic and selenium from a synthetic hydrocarbonaceous fluid feed stream obtained from oil shale comprising the steps of noncatalytically heat treating said feed stream at a temperature of at least about 600° F and at a pressure such that a substantial portion of said feed is maintained in a liquid phase for a period of time sufficient to form a precipitate; and thereafter separating at least a portion of said precipitate from the thus treated synthetic hydrocarbonaceous fluid.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein said feed stream is heat treated in the presence of hydrogen.
Claim 4
Dependent Claim
26 words
The method of claim 2 wherein the partial pressure of said hydrogen is at least 500 psig during at least a portion of said heat treating.
Claim 5
Dependent Claim
19 words
The method of claim 3 wherein said separating is carried out by filtering said thus treated synthetic hydrocarbonaceous fluid.
Claim 6
Dependent Claim
24 words
The method of claim 4 wherein said feed stream is heat treated at a temperature of from about 750° F to about 850° F.
Claim 7
Dependent Claim
24 words
The method of claim 1 wherein said feed stream is heat treated at a temperature of from about 750° F to about 850° F.
Claim 8
Dependent Claim
25 words
The method of claim 1 wherein said precipitate is less than 1 part by weight per 100 parts by weight of said fluid feed stream.
Claim 9
Dependent Claim
19 words
The method of claim 1 wherein said separating is carried out by centrifuging said thus treated synthetic hydrocarbonaceous fluid.
Claim 10
Dependent Claim
19 words
The method of claim 1 wherein said separating is carried out by filtering said thus treated synthetic hydrocarbonaceous fluid.
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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) | 1980-06-13 | 1980-12-13 | 1981-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-13 | 1984-12-13 | 1985-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-13 | 1988-12-13 | 1989-06-14 | $7700.00 | Window Closed / Lapsed |