US4343693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing contaminant from a feedstock stream
Assignee: Phillips Petroleum Co
•
Filing: 1981-03-31
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Granted: 1982-08-10
•
Expires: 2001-03-31
Abstract
Abstract Contaminants such as petroleum sulfonates, anticorrosion amines, and silicone oils are removed from a contaminated feedstock stream by contacting said feedstock stream with an adsorbent comprising bauxite. In a further aspect, a thus purified petroleum feedstock stream is hydrodesulfurized.
Inventors
- 👤 Eric O. Holland
- 👤 Marvin M. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:39
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/003; C10G45/00; C10G45/02; C10G45/04; C10G67/00; C10G67/02; C10G67/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
47 words
A method of removing feedstock stream contaminants including at least one of petroleum sulfonate and silicone oils from a contaminated feedstock stream comprising contacting said contaminated feedstock stream with an adsorbent comprising bauxite, thereby removing at least a portion of said contaminants from said contaminated feedstock stream.
Claim 2
Independent Claim
47 words
A method of removing feedstock stream contaminants including at least one of petroleum sulfonate and silicone oils from a contaminated feedstock stream comprising contacting said contaminated feedstock stream with an adsorbent comprising bauxite, thereby removing at least a portion of said contaminants from said contaminated feedstock stream.
Claim 3
Dependent Claim
15 words
A method as in claim 1 wherein: said feedstock stream is a petroleum feedstock stream.
Claim 4
Dependent Claim
22 words
A method as in claim 1 wherein: said feedstock stream generally comprises hydrocarbons having from 5 to 10 carbon atoms per molecule.
Claim 5
Dependent Claim
79 words
A method as in claim 2 wherein: said bauxite comprises in the range of abut 30 to about 75 percent Al 2 O 3 , in the range of about 2 to about 31 percent H 2 0, in the range of about 3 to about 25 percent Fe 2 O 3 , in the range of about 2 to about 9 percent SiO 2 , in the range of about 1 to about 3 percent TiO 2 .
Claim 6
Dependent Claim
14 words
A method as in claim 4 wherein: said feedstock stream contaminant is silicone oil.
Claim 7
Dependent Claim
26 words
A method as in claim 5 wherein: said contacting with an adsorbent is carried out in a temperature range from ambient temperature to about 600° F.
Claim 8
Dependent Claim
18 words
A method as in claim 6 wherein: said temperature range is about 150° F. to about 350° F.
Claim 9
Dependent Claim
30 words
A method as in claim 3, 4, or 5 wherein: said contacting with an adsorbent is carried out at a weight hourly space velocity of about 0.2 to about 20.
Claim 10
Dependent Claim
22 words
A method as in claim 8 wherein: said weight hourly space velocity is in the range from about 1 to about 5.
Claim 11
Dependent Claim
14 words
A method as in claim 4 wherein: said feedstock stream contaminant comprises petroleum sulfonates.
References Cited (Backward Citations)
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Cited
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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) | 1985-08-09 | 1986-02-08 | 1986-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-09 | 1990-02-08 | 1990-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-09 | 1994-02-08 | 1994-08-10 | $7700.00 | Window Closed / Lapsed |