Patent US4269694A successfully refreshed from Google Patents.
US4269694A
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Method of removing contaminant from a feedstock stream
Assignee: Phillips Petroleum Co
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Filing: 1979-10-01
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Granted: 1981-05-26
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Expires: 1999-10-01
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 18:03
CPC Classifications
C; C10; C10G; C10G67/00; C10G67/02; C10G67/06; C10G25/00; C10G25/003; C10G45/00; C10G45/02; C10G45/04
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
71 words
A method of hydrodesulfurizing a petroleum feedstock stream comprising: contacting a contaminated petroleum feedstock stream containing feedstock contaminants with an adsorbent comprising activated bauxite effective to adsorb said feedstock contaminants to remove at least a portion of said contaminants therefrom to produce a purified petroleum feedstock stream; and subsequently contacting said purified petroleum feedstock stream with a hydrodesulfurization catalyst under conditions effective for hydrodesulfurization to produce a purified hydrodesulfurized feedstock stream.
Claim 2
Independent Claim
71 words
A method of hydrodesulfurizing a petroleum feedstock stream comprising: contacting a contaminated petroleum feedstock stream containing feedstock contaminants with an adsorbent comprising activated bauxite effective to adsorb said feedstock contaminants to remove at least a portion of said contaminants therefrom to produce a purified petroleum feedstock stream; and subsequently contacting said purified petroleum feedstock stream with a hydrodesulfurization catalyst under conditions effective for hydrodesulfurization to produce a purified hydrodesulfurized feedstock stream.
Claim 3
Dependent Claim
30 words
A method as in claim 1 wherein: said feedstock contaminants are selected from the group consisting of corrosion inhibitors, surfactants, antifoam agents, and combinations of any two or more thereof.
Claim 4
Dependent Claim
27 words
A method as in claim 2 wherein: said contaminated petroleum feedstock stream comprises generally hydrocarbons having in the range from 5 to 10 carbon atoms per molecule.
Claim 5
Dependent Claim
80 words
A method as in claim 3 wherein: said bauxite comprises in the range of about 30 to about 75 percent Al 2 O 3 , in the range of about 2 to about 31 percent H 2 O, 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 , and in the range of about 1 to about 3 percent TiO 2 .
Claim 6
Dependent Claim
32 words
A method as in claim 4 wherein: said feedstock contaminants are selected from the group consisting of corrosion inhibiting amines, petroleum sulfonates, silicone oils, and combinations of any two or more thereof.
Claim 7
Dependent Claim
13 words
A method as in claim 4 wherein: said feedstock contaminants is silicone oil.
Claim 8
Dependent Claim
14 words
A method as in claim 4 wherein: said feedstock stream contaminant comprises petroleum sulfonates.
Claim 9
Dependent Claim
27 words
A method as in claim 6 wherein: said contacting with a bauxite adsorbent is carried out in a temperature range from ambient temperature to about 600° F.
Claim 10
Dependent Claim
18 words
A method as in claim 8 wherein: said temperature range is about 150° F. to about 350° F.
Claim 11
Dependent Claim
31 words
A method as in claim 4, 5, or 6 wherein: said contacting with a bauxite adsorbent is carried out at a weight hourly space velocity of about 0.2 to about 20.
Claim 12
Dependent Claim
22 words
A method as in claim 10 wherein: said weight hourly space velocity is in the range from about 1 to about 5.
Claim 13
Dependent Claim
45 words
A method as in claim 4 further comprising: combining a reforming hydrogen stream with said contaminated petroleum feedstock stream prior to said first contacting; and heating said purified petroleum feedstock stream to a temperature range in the range of ambient temperature to about 600° F.
Claim 14
Dependent Claim
19 words
A method as in claim 12 wherein: said temperature range is from about 150° F. to about 350° F.
Claim 15
Dependent Claim
83 words
A method as in claim 13 wherein: said hydrodesulfurization catalyst is selected from the group consisting of catalytically active metals selected from the group consisting of molybdenum, tungsten, nickel, cobalt, copper, iron, zinc, and mixtures thereof, said catalytically active metals being present in the metallic state or in the form of oxides, or carbonyls, or sulfides, or salts of carboxylic acids, or chemically combined with each other, or chemically or physically combined with other metals such as the alkali or alkaline earth metals.
Claim 16
Dependent Claim
59 words
A method as in claim 14 wherein: said hydrodesulfurization catalyst is selected from the group consisting of molybdenum oxide, cobalt molybdate, nickel sulfide, zinc molybdate, copper oxide, barium oxide, copper molybdate, magnesium tungstate, iron oxide, barium molybdate, tungsten oxide, zinc sulfide, molybdenum hexacarbonyl cobalt oxide, cobalt naphthenate, nickel napthenate, barium naphthenate, and mixtures of any two or more thereof.
Claim 17
Dependent Claim
39 words
A method as in claim 15 wherein: said hydrodesulfurization catalyst is associated with a catalytic support material selected from the group consisting of alumina, calcium aluminate, barium aluminate, magnesium aluminate, bauxite, and mixtures of any two or more thereof.
Claim 18
Dependent Claim
14 words
A method as in claim 16 wherein: said hydrodesulfurization catalyst is a nickel-molybdenum catalyst.
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) | 1984-05-25 | 1984-11-24 | 1985-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-25 | 1988-11-24 | 1989-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-25 | 1992-11-24 | 1993-05-26 | $7700.00 | Window Closed / Lapsed |