US5284492A
Expired / Lapsed
US
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Enhanced lubricity fuel oil emulsions
Assignee: Nalco Fuel Tech
•
Filing: 1992-10-08
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Granted: 1994-02-08
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Expires: 2012-10-08
Abstract
Abstract An improved lubricity water and fuel oil emulsion is presented. The emulsion is used as fuel for an electric power generating turbine, and includes a lubricity additive selected from the group consisting of dimer acids, trimer acids, phosphate esters, sulfurized castor oil, and mixtures thereof. Also included is a method for improving the combustion efficiency of a turbine, using the inventive additives.
Inventors
- 👤 Leonard Dubin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:16
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/32; C10L1/328
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
38 words
An improved lubricity water and fuel oil emulsion for use as fuel for an electric power generating turbine, comprising a lubricity additive selected from the group consisting of dimer acids, trimer acids, sulfurized castor oil, and mixtures thereof.
Claim 2
Dependent Claim
38 words
An improved lubricity water and fuel oil emulsion for use as fuel for an electric power generating turbine, comprising a lubricity additive selected from the group consisting of dimer acids, trimer acids, sulfurized castor oil, and mixtures thereof.
Claim 3
Dependent Claim
20 words
The emulsion of claim 1, wherein said lubricity additive is present at a level of at least about 100 ppm.
Claim 4
Dependent Claim
17 words
The emulsion of claim 2, wherein said lubricity additive comprises dimer acids, trimer acids, or blends thereof.
Claim 5
Dependent Claim
18 words
The emulsion of claim 1, wherein said lubricity additive further comprises a corrosion inhibitor comprising a filming amine.
Claim 6
Dependent Claim
49 words
The emulsion of claim 1, which further comprises an emulsification system comprising: a) about 25% to about 85% of an amide; b) about 5% to about 25% of a phenolic surfactant; and c) about 0% to about 40% of a difunctional block polymer terminating in a primary hydroxyl group.
Claim 7
Dependent Claim
22 words
The emulsion of claim 5, wherein said amide comprises an alkanolamide formed by condensation of a hydroxyalkyl amine with an organic acid.
Claim 8
Dependent Claim
13 words
The emulsion of claim 5, wherein said phenolic surfactant comprises an ethoxylated alkylphenol.
Claim 9
Dependent Claim
13 words
The emulsion of claim 7, wherein said ethoxylated alkylphenol comprises ethylene oxide nonylphenyl.
Claim 10
Dependent Claim
16 words
The emulsion of claim 5, wherein said difunctional block polymer comprises propylene oxide/ethylene oxide block polymer.
Claim 11
Dependent Claim
22 words
The emulsion of claim 5, wherein said emulsification system is present in an amount of about 0.05% to about 5.0% by weight.
Claim 12
Dependent Claim
19 words
The emulsion of claim 1, wherein said fuel comprises #2 oil, kerosene, jet fuels, diesel fuels and mixtures thereof.
Claim 13
Dependent Claim
12 words
The emulsion of claim 1, which comprises up to about 90% water.
Claim 14
Independent Claim
53 words
A method for improving the combustion efficiency of an electric power generating turbine, comprising forming an emulsion of water and fuel oil, which comprises a lubricity additive selected from the group consisting of dimer acids, trimer acids, sulfurized castor oil and mixtures thereof; and combusting said emulsion in an electric power generating turbine.
Claim 15
Independent Claim
53 words
A method for improving the combustion efficiency of an electric power generating turbine, comprising forming an emulsion of water and fuel oil, which comprises a lubricity additive selected from the group consisting of dimer acids, trimer acids, sulfurized castor oil and mixtures thereof; and combusting said emulsion in an electric power generating turbine.
Claim 16
Dependent Claim
20 words
The method of claim 13, wherein said lubricity additive is present at a level of at least about 100 ppm.
Claim 17
Dependent Claim
17 words
The method of claim 13, wherein said lubricity additive comprises dimer acids, trimer acids, or blends thereof.
Claim 18
Dependent Claim
18 words
The method of claim 13, wherein said lubricity additive further comprises a corrosion inhibitor comprising a filming amine.
Claim 19
Dependent Claim
49 words
The method of claim 13, which further comprises an emulsification system comprising: a) about 25% to about 85% of an amide; b) about 5% to about 25% of a phenolic surfactant; and c) about 0% to about 40% of a difunctional block polymer terminating in a primary hydroxyl group.
Claim 20
Dependent Claim
22 words
The method of claim 17, wherein said amide comprises an alkanolamide formed by condensation of a hydroxyalkyl amine with an organic acid.
Claim 21
Dependent Claim
13 words
The method of claim 17, wherein said phenolic surfactant comprises an ethoxylated alkylphenol.
Claim 22
Dependent Claim
13 words
The method of claim 19, wherein said ethoxylated alkylphenol comprises ethylene oxide nonylphenyl.
Claim 23
Dependent Claim
16 words
The method of claim 17, wherein said difunctional block polymer comprises propylene oxide/ethylene oxide block polymer.
Claim 24
Dependent Claim
22 words
The method of claim 17, wherein said emulsification system is present in an amount of about 0.05% to about 5.0% by weight.
Claim 25
Dependent Claim
20 words
The method of claim 13, wherein said fuel oil comprises #2 oil, kerosene, jet fuels, diesel fuels and mixtures thereof.
Claim 26
Dependent Claim
13 words
The method of claim 13, which comprises up to about 90% water-in-fuel oil.
Claim 27
Dependent Claim
14 words
The method of claim 13, wherein said emulsion is combusted simultaneously with natural gas.
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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) | 1997-02-07 | 1997-08-09 | 1998-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-07 | 2001-08-09 | 2002-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-07 | 2005-08-09 | 2006-02-08 | $7700.00 | Window Closed / Lapsed |