Patent US2987349A successfully refreshed from Google Patents.
Patent US4437981A successfully refreshed from Google Patents.
US4437981A
Expired / Lapsed
US
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Immobilization and neutralization of contaminants in crude oil
Assignee: Ashland LLC
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Filing: 1982-11-22
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Granted: 1984-03-20
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Expires: 2002-11-22
Abstract
Abstract The invention is concerned with substantially eliminating the deactivating effects of alkaline materials and metal contaminants and compounds thereof existing in crude oils by first desalting the crude oil and thereafter adding a select neutralizing and immobilizing metal component or compound thereof to said desalted crude oil prior to and/or during distillation thereof to obtain select fractions subsequently catalytically processed as by catalytic cracking with a crystalline zeolite containing catalyst.
Inventors
- 👤 Stephen M. Kovach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:30
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/06
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
116 words
A method for deactivating alkaline contaminants and metal contaminants in crude oils prior to affecting catalytic conversion of fractions thereof which comprises: contacting a crude oil with one or more metal compounds selected from the group consisting of titanium, zirconium, and indium compounds immediately prior to or during distillation thereof, whereby residual alkaline material in said crude oil is neutralized and vanadium is reacted to form a reaction product having a melting point above the maximum temperature of a downstream catalytic conversion operation, and recovering a residual fraction of said crude oil boiling above 32.2° c. (630° F.) comprising metal contaminants reduced in deactivating affect upon a downstream contacted zeolite conversion catalyst at an elevated temperature.
Claim 2
Independent Claim
116 words
A method for deactivating alkaline contaminants and metal contaminants in crude oils prior to affecting catalytic conversion of fractions thereof which comprises: contacting a crude oil with one or more metal compounds selected from the group consisting of titanium, zirconium, and indium compounds immediately prior to or during distillation thereof, whereby residual alkaline material in said crude oil is neutralized and vanadium is reacted to form a reaction product having a melting point above the maximum temperature of a downstream catalytic conversion operation, and recovering a residual fraction of said crude oil boiling above 32.2° c. (630° F.) comprising metal contaminants reduced in deactivating affect upon a downstream contacted zeolite conversion catalyst at an elevated temperature.
Claim 3
Dependent Claim
74 words
A process according to claim 1 wherein said crude oil is desalted prior to said contact with one or more metal compounds, the desalting being accomplished by washing with sodium hydroxide and water to remove alkaline metal salts of sodium, magnesium, calcium, and potassium existing as chlorides, carbonates and/or sulfates in said crude oil and remove an acidic component such as hydrogen sulfide, phenolic acids and naphthenic acids thereby forming a washed crude oil.
Claim 4
Dependent Claim
23 words
The process of claim 1 wherein the residual alkali material comprises one or more elements of sodium, magnesium, calcium, potassium and compounds thereof.
Claim 5
Dependent Claim
53 words
The process of claim 1 wherein the metal contaminants comprise vanadium, nickel, iron and copper and wherein the oil is mixed with a select additive material so as to form high melting temperature mixture by the addition of an additive material selected from the group consisting of titanium, zirconium, indium, and compounds thereof.
Claim 6
Dependent Claim
16 words
A method according to claim 1 wherein said crude oil is contacted with a titanium compound.
Claim 7
Dependent Claim
16 words
A method according to claim 1 wherein said crude oil is contacted with a zirconium compound.
Claim 8
Dependent Claim
16 words
A method according to claim 1 wherein said crude oil is contacted with an indium compound.
Claim 9
Dependent Claim
37 words
The process of claim 1 wherein the select additive metal component is in an amount within the range of 0.01 up to about 2 wt% of the crude oil feed boiling above about 332° C. (630° F.)
Claim 10
Dependent Claim
63 words
The process of claim 1 wherein separation of a desalted crude oil feed is initially accomplished in a preflash zone and an atmospheric distillation zone with heating of the oil feed between zones and said select additive metal component is added all or in part to the crude oil feed either before or after said preflash zone and before said atmospheric distillation zone.
Claim 11
Dependent Claim
20 words
The process of claim 1 wherein said alkaline metal contaminants are present in said crude oils up to 50 ppms.
Claim 12
Dependent Claim
31 words
The process of claim 1 wherein said metals contaminants are present in said crude oils up to 50 ppm and has a Conradson Carbon value of 1 wt. % or more.
Claim 13
Dependent Claim
30 words
The process of claim 1 wherein said metal contaminants are present in said crude oils up to 100 ppm having a Conradson Carbon value of 2 wt. % or more.
Claim 14
Dependent Claim
30 words
The process of claim 1 wherein said metal contaminants are present in said crude oils up to 200 ppm having a Conradson Carbon value of 4 wt. % or more.
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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) | 1987-03-20 | 1987-09-19 | 1988-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-20 | 1991-09-19 | 1992-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-20 | 1995-09-19 | 1996-03-20 | $7700.00 | Window Closed / Lapsed |