Patent US4002558A successfully refreshed from Google Patents.
US4002558A
Expired / Lapsed
US
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Removing water haze from distillate fuels
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1976-01-22
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Granted: 1977-01-11
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Expires: 1996-01-22
Abstract
Abstract Undesirable haze that occurs in a distillate fuel, such as a diesel fuel, a jet fuel or a heating oil, as a result of emulsion formation with slight traces of water, is removed from the fuel by adding to and simply mixing with the fuel a small amount of an inorganic halide or nitrate of calcium, magnesium, cadmium, copper or nickel dissolved in a water-miscible, fuel-immiscible aliphatic monohydric or polyhydric alcohol or glycol ether.
Inventors
- 👤 Nicholas Feldman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:45
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/04; F; F02; F02B; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
72 words
A method for removing water haze from a middle distillate fuel which comprises contacting said fuel with from 0.002 to 2 volumes per 100 volumes of said fuel, of a solution of an inorganic halide or nitrate of calcium, magnesium, cadmium, copper or nickel dissolved in a water-miscible, fuel-immiscible aliphatic monohydric alcohol, polyhydric alcohol or glycol ether, said solution containing from 0.1 to 50 wt. % of said inorganic halide or nitrate.
Claim 2
Independent Claim
72 words
A method for removing water haze from a middle distillate fuel which comprises contacting said fuel with from 0.002 to 2 volumes per 100 volumes of said fuel, of a solution of an inorganic halide or nitrate of calcium, magnesium, cadmium, copper or nickel dissolved in a water-miscible, fuel-immiscible aliphatic monohydric alcohol, polyhydric alcohol or glycol ether, said solution containing from 0.1 to 50 wt. % of said inorganic halide or nitrate.
Claim 3
Dependent Claim
14 words
The method of claim 1 wherein said solution comprises magnesium chloride dissolved in methanol.
Claim 4
Dependent Claim
24 words
The method of claim 1 wherein said solvent is selected from the group consisting of ethanol, methanol, ethylene glycol and ethylene glycol monomethyl ether.
Claim 5
Dependent Claim
23 words
The method of claim 1 wherein there is used from about 0.04 to about 0.5 volume of solution for 100 volumes of fuel.
Claim 6
Dependent Claim
23 words
The method of claim 1 wherein said solution contains from about 5 to about 25 wt. % of said inorganic halide or nitrate.
Claim 7
Dependent Claim
50 words
The method of claim 1 wherein the total quantity of solution employed in treating a batch of fuel is premixed with from 0.5 to 2 volume percent of the fuel and the resulting mixture is then simply poured into the remaining bulk of the fuel without any additional mechanical mixing.
Claim 8
Dependent Claim
41 words
The method of claim 1 wherein the total quantity of solution employed in treating a batch of fuel is sprayed over the top surface of the batch of fuel and permitted to settle through the fuel without mechanical stirring or mixing.
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) | 1980-01-11 | 1980-07-12 | 1981-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-11 | 1984-07-12 | 1985-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-11 | 1988-07-12 | 1989-01-11 | $7700.00 | Window Closed / Lapsed |