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EP0506069A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Supercritical fluids as diluents in combustion of liquid fuels and waste materials

Assignee: Union Carbide Chemicals and Plastics Technology LLC
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Filing: 1992-03-27
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Granted: —
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Expires: 2012-03-27
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Abstract

Abstract The present invention is directed to processes and apparatus in which supercritical fluids are used as viscosity reduction diluents for liquid fuels or waste materials which are then spray atomized into a combustion chamber. The addition of supercritical fluid to the liquid fuel and/or waste material allows viscous petroleum fractions and other liquids such as viscous waste materials that are too viscous to be atomized (or to be atomized well) to now be atomized by this invention by achieving viscosity reduction and allowing the fuel to produce a combustible spray and improved combustion efficiency. Moreover, the present invention also allows liquid fuels that have suitable viscosities to be better utilized as a fuel by achieving further viscosity reduction that improves atomization still further by reducing droplet size which enhances evaporation of the fuel from the droplets.

Inventors

  • 👤 Kenneth Andrew Nielsen

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-28 14:57
CPC Classifications
C; C10; C10L; C10L1/00; B; B05; B05B; B05B7/00; B05B7/24; B05B7/26; B05B7/28; B05B7/32; B05D; B05D1/00; B05D1/02; B05D1/025; B05D2401/00; B05D2401/90

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 68 words
A process for forming a combustible liquid spray mixture which comprises: a) forming a liquid mixture in a closed system, said liquid mixture comprising: (i) at least one liquid fuel capable of being combusted; and (ii) at least one supercritical fluid which is at least partially miscible with the liquid fuel; and b) spraying said liquid mixture into an atmosphere capable of sustaining combustion of said liquid fuel.
Claim 2
Dependent Claim 33 words
The process of Claim 1, wherein the at least one supercritical fluid is added in an amount sufficient to render the viscosity of the liquid mixture to a point suitable for spray combustion.
Claim 3
Dependent Claim 33 words
The process of Claim 2, wherein the amount of supercritical fluid in the liquid mixture ranges from about 10 to about 60 weight percent based upon the total weight of the liquid mixture.
Claim 4
Dependent Claim 26 words
The process of Claim 1, wherein the liquid mixture is sprayed to form droplets having an average diameter of from about 1 to about 300 microns.
Claim 5
Dependent Claim 13 words
The process of Claim 1, wherein the liquid fuel is a petroleum product.
Claim 6
Dependent Claim 14 words
The process of Claim 1, wherein the liquid fuel contains solid particulate combustible matter.
Claim 7
Dependent Claim 15 words
The process of Claim 1, wherein the liquid fuel is a liquid organic waste material.
Claim 8
Dependent Claim 54 words
The process of Claim 1, wherein the at least one supercritical fluid is selected from the group consisting of carbon dioxide, nitrous oxide, sulfur dioxide, ammonia, methyl amines, xenon, krypton, methane, ethane, ethylene, propane, propylene, butane, butene, pentane, dimethyl ether, methyl ethyl ether, diethyl ether, formaldehyde, chlorotrifluoromethane, monofluoromethane, methyl chloride, cyclopentane, and mixtures thereof.
Claim 9
Dependent Claim 15 words
The process of Claim 1, wherein the liquid mixture is sprayed as a decompressive spray.
Claim 10
Independent Claim 80 words
An apparatus for the spray combustion of liquid fuels containing at least one supercritical fluid comprising, in combination: a) means for supplying at least one liquid fuel capable of being combusted; b) means for supplying at least one supercritical fluid; c) means for forming a liquid mixture of the components supplied by means (a) and (b); and d) means for spraying said liquid mixture by passing the mixture under pressure through an orifice into an atmosphere capable of sustaining combustion.

References Cited (Backward Citations)

US2327835A Cited
US2866693A Cited
US3009789A Cited
BE689179A Cited
GB1180678A Cited
FR2217410A1 Cited

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