Classifications

• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
  • C10L10/00—Use of additives to fuels or fires for particular purposes
  • C10L10/02—Use of additives to fuels or fires for particular purposes for reducing smoke development
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
  • C10L1/00—Liquid carbonaceous fuels
  • C10L1/10—Liquid carbonaceous fuels containing additives
  • C10L1/14—Organic compounds
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
  • C10L1/00—Liquid carbonaceous fuels
  • C10L1/10—Liquid carbonaceous fuels containing additives
  • C10L1/14—Organic compounds
  • C10L1/16—Hydrocarbons
  • C10L1/1608—Well defined compounds, e.g. hexane, benzene
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
  • C10L1/00—Liquid carbonaceous fuels
  • C10L1/10—Liquid carbonaceous fuels containing additives
  • C10L1/14—Organic compounds
  • C10L1/18—Organic compounds containing oxygen
  • C10L1/185—Ethers; Acetals; Ketals; Aldehydes; Ketones
  • C10L1/1857—Aldehydes; Ketones
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
  • C10L1/00—Liquid carbonaceous fuels
  • C10L1/10—Liquid carbonaceous fuels containing additives
  • C10L1/14—Organic compounds
  • C10L1/26—Organic compounds containing phosphorus
  • C10L1/2633—Organic compounds containing phosphorus phosphorus bond to oxygen (no P. C. bond)
  • C10L1/2641—Organic compounds containing phosphorus phosphorus bond to oxygen (no P. C. bond) oxygen bonds only
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
  • C10L1/00—Liquid carbonaceous fuels
  • C10L1/10—Liquid carbonaceous fuels containing additives
  • C10L1/14—Organic compounds
  • C10L1/18—Organic compounds containing oxygen
  • C10L1/1802—Organic compounds containing oxygen natural products, e.g. waxes, extracts, fatty oils
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
  • C10L1/00—Liquid carbonaceous fuels
  • C10L1/10—Liquid carbonaceous fuels containing additives
  • C10L1/14—Organic compounds
  • C10L1/18—Organic compounds containing oxygen
  • C10L1/182—Organic compounds containing oxygen containing hydroxy groups; Salts thereof
  • C10L1/1822—Organic compounds containing oxygen containing hydroxy groups; Salts thereof hydroxy group directly attached to (cyclo)aliphatic carbon atoms
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
  • C10L1/00—Liquid carbonaceous fuels
  • C10L1/10—Liquid carbonaceous fuels containing additives
  • C10L1/14—Organic compounds
  • C10L1/18—Organic compounds containing oxygen
  • C10L1/192—Macromolecular compounds
  • C10L1/198—Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds homo- or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon to carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid
  • C10L1/1985—Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds homo- or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon to carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid polyethers, e.g. di- polygylcols and derivatives; ethers - esters
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
  • C10L1/00—Liquid carbonaceous fuels
  • C10L1/10—Liquid carbonaceous fuels containing additives
  • C10L1/14—Organic compounds
  • C10L1/22—Organic compounds containing nitrogen
  • C10L1/23—Organic compounds containing nitrogen containing at least one nitrogen-to-oxygen bond, e.g. nitro-compounds, nitrates, nitrites
  • C10L1/231—Organic compounds containing nitrogen containing at least one nitrogen-to-oxygen bond, e.g. nitro-compounds, nitrates, nitrites nitro compounds; nitrates; nitrites
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
  • C10L1/00—Liquid carbonaceous fuels
  • C10L1/10—Liquid carbonaceous fuels containing additives
  • C10L1/14—Organic compounds
  • C10L1/22—Organic compounds containing nitrogen
  • C10L1/232—Organic compounds containing nitrogen containing nitrogen in a heterocyclic ring

Definitions

• the invention relates to new and useful additives for hydrocarbon-based fuels, fuel formulations, method of production and use. More specifically, the invention is directed to compounds, materials and processes for improving the combustion characteristics of fuels so as to reduce undesirable polluting emissions produced during burning.
• the present invention relates generally to composition and method for improving combustion and reducing polluting emissions in fuels.
• Hydrocarbon fuels typically contain complex mixtures of hydrocarbons, depending on the specific application: including but not limited to gasoline, diesel, jet, fuel oils, coal fuels, resid fuels, kerosene, and the like. Fuels typically may also contain other additives, including detergents, anti-icing agents, emulsifiers, corrosion inhibitors, dyes, deposit modifiers, ignition modifiers and non-hydrocarbons, for example oxygenates, for improving the emission characteristics of fuels.
• additives including detergents, anti-icing agents, emulsifiers, corrosion inhibitors, dyes, deposit modifiers, ignition modifiers and non-hydrocarbons, for example oxygenates, for improving the emission characteristics of fuels.
• the test of Smoke Point can be used to show the effect of additives on a standard jet engine fuel such as A, 1, JP-4 or JP-8 (herein after all Icnown as "Jet") that exhibit a reproducible height of a smokeless flame when burned in wick-fed lamp of the ASTM test.
• This test is qualitatively related to the potential radiant heat transfer from the combustion products of the fuel. Additives incorporated into a fuel that improve the combustion characteristics, that is completeness of burning, exhibit a higher smoke point. This effect can be synergistic and unexpected for certain additives that have not been previously known as additives to Hydrocarbon fuels for this purpose. When improvements in Smoke Point are found this positively correlates to reducing polluting emissions into the environment.
• the present invention provides solutions to this ongoing problem of polluting emissions from various internal combustion devices, for example, automotive engines, diesel engines ( so-called piston engines), coal burning plants, aero-engines, jet engines, two-stroke engines, and the like, thereby overcoming many of the aforementioned limitations in the hydrocarbon fuel formulation art.
• the invention relates to additives for hydrocarbon fuels that improve combustion and reduce emissions when added in small quantities.
• Hydrocarbon fuels can be thought of as including, but not limited to gasoline, diesel, oil fuels, coals and the like that provide for the production of radiant heat when combined in the presence of oxygen and a source of ignition. These fuels are useful in automobiles, motorcycles, tracks, generators, power plants and the like.
• the invention includes a fuel additive for hydrocarbon fuels comprising a molecule having a system of between 2 and about 11 (or more) conjugated carbon-carbon double bonds.
• the tenn conjugated includes aromatic species, for example, in a preferred embodiment, biphenyl.
• the conjugated group can further comprise at least one end group comprising a cyclic linear or branched 5 to 8 carbon saturated, imsaturated or aromatic moiety. If the additive comprises at least two aromatic moieties then a single double carbon bond between them is optional.
• the additive an be further substituted with oxygen- containing groups, for example hydroxyl or keto groups.
• substituents include least one Ci to C 6 containing group, branched or linear that can be substituted on the system of conjugated carbon-carbon double bond containing groups, the end group moiety, or combinations of both.
• the fuel additive can be a molecule comprised of at least 12 carbon atoms and as high as about 40 to 50 carbon atoms.
• the fuel additives according to the above description can include mixtures of cis and trans beta-carotenes, These compounds can be derived from natural and/ or synthetic sources. In the case of mixtures of cis and trans beta-carotenes, these can be in the form of precursors from a process to manufacture pure trans beta-carotene.
• the fuel additive can be astaxanthin or an astaxanthin derivatives obtained from synthetic or natural sources. Additionally, the additive can include mixtures of cis and trans beta-carotenes and astaxanthin and/or an astaxanthin derivatives obtained from synthetic or natural sources.
• Preferred aromatic group containing compounds can be selected for example from the group of cis-stilbene, trans- stilbene, 1, 6 diphenyl-1, 3, 5-hexatriene, 1, 4-diphenyl- 1,3 -butadiene, l,4-diphenyl-2-methyl-l,3 butadiene, 1, 4-diphenyl butadiene, bibenzyl and mixtures of with or without carotenes, astaxanthin, or lutein derived compounds.
• the fuel additive can further comprise a solubilizing agent such as a surfactant having a hydrophobic-lipophillic balance to enhance the solubility of a fuel additive in a hydrocarbon fuel.
• Particularly useful solubilizing agents are those that comprise an ethoxylated or propoxylated moiety having from about 6 to about 25 or 30 ethox- or propoxylated moieties derived from ethylene oxide and/or propylene oxide units.
• ethoxylated macadamia nut oil having about 12 to 16 ethoxylations.
• a method of making a fuel composition comprising at least one additive of the present invention includes the steps of: obtaining a fuel additive prepared or synthesized in a low oxygen or oxygen free environment; removing a substantial portion of dissolved oxygen from a fuel solvent or diluent; preparing an additized solution by mixing the solvent or diluent with the fuel additive under reduced oxygen conditions prior to additizing a fuel and additizing the fuel.
• a phytic acid (inositol hexaphosphoric acid) based fuel additive can be a water solution, a salt or mixture.
• a surfactant for example, a macadamia nut oil-based surfactant and effective amount of an antioxidant such as a quinoline compound to provide enhanced oxidation resistance can be added.
• Fig. 1 illustrates the Smoke Point Apparatus utilized in the present disclosure for obtaining Smoke Point.
• Fig. 2. illustrates an Experimentalist using the Head Rest and Smoke Point Apparatus.
• additives which enhance the combustion characteristics of hydrocarbon based fuels, and thus improve emissions characteristics of burnt fuels are enhanced by including certain groups of molecular structures that have structural parameters hereto not realized as especially useful.
• molecules that include extended pi-bonded systems, multiple hydrocarbon rings provide improved combustion characteristics.
• Such molecules when added in the parts per million to parts per thousand range having the aforementioned characteristics often show improved combustion characteristics when formulated into a hydrocarbon fuel.
• solubilizing agents such as surfactants that can include oxygen atoms in their structures (e.g. PEG-type surfactants) in combination with the aforementioned further improves combustion efficiency.
• molecules having extended pi or double bonded structures of from about 2 to 11 or more conjugated double bonds are believed to enhance combustion characteristics and thus lower pollution when properly incorporated into a fuel such as Jet or diesel and the like.
• the moieties including the double bond structures can be terminated by at least one end group further comprising an aromatic, cyclic branched 5 to 8 carbon moiety that can be additionally saturated or imsaturated. Examples include: cyclo- pentane, cyclo-pentene, cyclo-hexane, cyclo-hexene, cyclo-heptane, cyclo-heptene, isopentane or isopentene and the like.
• Aromatic structures are considered as extended pi structures also.
• the unsaturate ⁇ V aromatic portions and the end groups can additionally include various other subsituents such as hydroxyl groups, keto groups, alkyl groups, alkenyl groups and combinations of these groups.
• the additive molecules can comprise from 12 to about 40 or 50 carbon atoms. Such molecules are found in mixtures of synthetic carotenoid precursors. One such mixture is a product called "Iso-mixtene" which is an intermediate used in the manufacture of synthetic trans beta carotene.
• Iso-Mixtene is a product of DSM chemicals (Texas), (formerly, Roche Vitamins, Inc): and is an admixture of from about 89 to about 98% trans ⁇ carotene with the remainder being from about 1.4 to 11% of cis ⁇ carotene isomers. These can be obtained from a natural or a synthetic source.
• the carotinoids and/or carotenoid precursors can also be those disclosed in German patent 954,247, issued in 1956.
• compounds within the above description are astaxanthin or astaxanthin derivatives obtained from synthetic or natural sources, or lutein or lutein derivatives obtained from synthetic or natural sources.
• Other embodiments include molecules having two aromatic end groups such as cis and trans stilbene, bibenzyl or a derivative having hydroxyl groups, or alkyl or alkenyl groups substituted on the phenyl rings; or 1, 6 diphenyl-1, 3, 5-hexatriene substituted or not substituted as described previously.
• the additives can be added to a fuel in concentrations from at least one part per million upwards to provide a level of improved combustion and reduced pollution.
• One embodiment of the invention includes adding a solubilizing agent such as a surfactant having a hydrophobic-lipophillic balance to enhance the solubility of a fuel additive in an HC.
• a solubilizing agent such as a surfactant having a hydrophobic-lipophillic balance
• a solubilizing agent such as a surfactant or surfactant systems.
• These solubilizing agents can additionally comprise oxygen-containing species, for example an ethoxylated or propoxylated moiety such as polyethylene- or polypropylene glycol modified oils that can further synergistically enhance the combustion of fuels when incorporated with the additives.
• These materials can be used in amounts that are sufficient to provide the desired degree of solubilization as can be determined by one of skill in the art. Typically they can be added in amounts up to a 10 or 100 fold excess of the inventive additive molecules.
• Another aspect of the present invention involves relates to methods of preparing the additives and the fuels in the absence of oxygen and optionally in the presence of an antioxidant. Certain compounds are capable of performing as both antioxidants and as thermal stabilizers. Therefore, it is possible to prepare formulations containing a single compound that provides both a thermal stability and antioxidant effect.
• Examples of compounds known in the art as providing some degree of oxidation resistance and/ or thermal stability include diphenylamines, dinaphthylamines, and phenylnaphthylamines, either substituted or unsubstituted, e.g., N,N'-diphenylphenylenediamine, p-octyldiphenylamine, p,p- dioctyldiphenylamine, N-phenyl-1-naphthylamine, N-phenyl-2-naphthylamine, N-(p- dodecyl)phenyl-2-naphthylamine, di-1-naphthylamine, and di-2naphthylamine; phenothazines such as N-alkylphenothiazines; immo(bisbenzyl); and hindered phenols such as 6-(t- butyl)phenol, 2,6-di-(
• oxidation inhibitors can be utilized in fuel formulations of various embodiments. These include phenolic antioxidants, amine antioxidants, sulfurized phenolic compounds, and organic phosphites, among others.
• the antioxidant includes predominately or entirely either (1) a hindered phenol antioxidant such as 2,6-di-tert-butylphenol, 4-methyl -2,6-di-tert-butylphenol, 2,4-dimethyl-6- tert-butylphenol, 4,4'-methylenebis(2,6-di-tert-butylphenol), and mixed methylene bridged polyalkyl phenols, or (2) an aromatic amine antioxidant such as the cycloalkyl-di-lower alkyl amines, and phenylenediamines, or a combination of one or more such phenolic antioxidants with one or more such amine antioxidants.
• a hindered phenol antioxidant such as 2,6-di-tert-butylphenol, 4-methyl -2,6-d
• tertiary butyl phenols such as 2,6-di-tert-butylphenol, 2,4,6-tri-tert-butylphenol and o-tert-butylphenol.
• N,N'-di-lower-alkyl phenylenediamines such as N,N'-di-sec-butyl-p- phenylenediamine, and its analogs, as well as combinations of such phenylenediamines and such tertiary butyl phenols.
• fuel preparation methods that can remove substantial portions of oxygen from additives or solvents or diluents that are to contain additives include pumping under partial vacuum or sonication in an inert atmosphere and the like prior to additizing a fuel are preferred. Combinations of materials and process steps are especially preferred.
• these materials can be added in amounts of typically 1 to 100 mis per gallon of a diluent or solvent such as toluene, cyclohexene, xylene(s) and the like, hi one preferred embodiment, the additives concentrations are added in ppm quantities: from about 1 to about 1000 ppm.
• the ppm quantities can be incremental in steps of 1, 3, 5, 7 9 ppm etc.
• the diluted ranges can be from 500 to 10,000 ppm of the base additive
• the additives are added in quantities of approximately 500 ppm increments, for example about 1000, 1500, 2000, 2500 to about 10,000 ppm.
• the additives are additized in amounts of about 1000 to 1100 ppm, 2000 to 2200 ppm, 3000 to about 3500 ppm and 4000 to about 4500 ppm. In still another preferred embodiment the additives are additized in amounts of about 1057 ppm, 2114 ppm, and 4227 ppm.
• a diesel fuel composition it can also contain a cetane improver or ignition accelerator.
• the ignition accelerator is preferably an organic nitrate different from and in addition to the nitrate or nitrate source described above.
• Preferred organic nitrates are substituted or unsubstituted alkyl or cycloalkyl nitrates having up to about 10 carbon atoms, preferably from 2 to 10 carbon atoms.
• the alkyl group can be either linear or branched.
• nitrate compounds suitable for use in preferred embodiments include, but are not limited to the following: methyl nitrate, ethyl nitrate, n-propyl nitrate, isopropyl nitrate, allyl nitrate, n-butyl nitrate, isobutyl nitrate, sec-butyl nitrate, tert-butyl nitrate, n-amyl nitrate, isoamyl nitrate, 2-amyl nitrate, 3-amyl nitrate, tert-amyl nitrate, n-hexyl nitrate, 2-ethylhexyl nitrate, n-heptyl nitrate, sec-heptyl nitrate, n-octyl nitrate, sec-octyl nitrate, n-nonyl nitrate, n- de
• Preferred alkyl nitrates are ethyl nitrate, propyl nitrate, amyl nitrates, and hexyl nitrates.
• Other preferred alkyl nitrates are mixtures of primary amyl nitrates or primary hexyl nitrates.
• primary is meant that the nitrate functional group is attached to a carbon atom which is attached to two hydrogen atoms.
• Examples of primary hexyl nitrates include n-hexyl nitrate, 2-ethylhexyl nitrate, 4-methyl-n-pentyl nitrate, and the like.
• nitrate esters can be accomplished by any of the commonly used methods: such as, for example, esterification of the appropriate alcohol, or reaction of a suitable alkyl halide with silver nitrate.
• additives can be present in the same or different amounts as the inventive additives and in preferred embodiments, especially preferred cetane improvers are added in amounts equal to or multiples of the quantities in ppm of the inventive additives.
• Embodiments based on phytic acid are also contemplated.
• a fuel additive comprising phytic acid, (inositol hexaphosphoric acid), and an ethoxylated nut oil such as ethoxylated macadamia nut oil.
• an effective amount of EDTMQ can be used to provide enhanced oxidation resistance.
• the phytic acid can be the disodium salt, available from Aldrich Chemical, mixed at a concentration of from about 1 to about 5, preferably about 1.5 to about 3 grams into 450 mis. of toluene. Into this solution from about 40 to about 60, preferably about 50 mis.
• ethoxylated Macadamia nut oil the ethoxylated portion having, on average 16 ethylene glycol repeat units.
• An antioxidant such as EDTMQ can be added in an amount of from about 0.5 to about 3 or more, preferably about 1.0 ml. into this solution, hi especially preferred embodiments, the additive was additized into 50 mis. of Jet A fuel and burned in the ASTM smoke point apparatus. Formulation exhibited an ASTM smoke point of between 22.0 and 22.5.
• a method of preparing fuel additives and fuels comprises steps including, adding an additive directly to a fuel; mixing, dissolving or combining an additive into a diluent or solvent, the resulting solution being finally diluted into a fuel and variations thereof are disclosed.
• An especially preferred method of making a fuel composition comprises the steps of obtaining a fuel additive prepared in a low oxygen or oxygen free environment; removing a substantial portion of dissolved oxygen from a fuel solvent or diluent; preparing an additized solution by mixing the solvent or diluent with the fuel additive under reduced oxygen conditions prior to additizing a fuel and additizing a fuel.
• a method of using the fuels, and additives of the present invention include but are not limited to adding an additive directly to a fuel and burning the fuel in an internal combustion engine, gas turbine or other such device is disclosed. Additionally, methods of using the additives include preparing intermediate solutions of the additives, mixing the same into a fuel at an effective ratio and burning the additive-enhanced fuel in a suitable device are disclosed. [0029] Formulated fuels compositions of preferred embodiments can contain additives other than the ones described.
• additives can include, but are not limited to, one or more octane improvers, detergents, antioxidants, demulsifies, corrosion inhibitors and/or metal deactivators, diluents, cold flow improvers, thermal stabilizers, and the like, as described below.
• the apparatus consists of a base, a candle mounted on the base, a candle socket mounted on the base, a housing which defines a so-called "gallery" in which the wick is guided into from below is mounted above the candle on the base, a scale portion for viewing a flame is attached parallel to the wick burner inside the housing, a chimney for expelling combusted products forms the upper portion of the gallery and a transparent quartz window that is a cover for the housing is attached in a manner so that it can be opened to access the ASTM wick and through which to view a flame.
• This device is described in Figure 1 in the test procedure bulletin.
• the lamp is mounted onto a massive, rigid test base in conjunction with an adjustable stand to position the head of a tester in such a manner so as to reduce reading errors in the scale in the Smoke Point apparatus.
• This stand is mounted vertically parallel to the lamp and in such a fashion that the eyes of the tester viewing a flame test are in a constant position relative to the distance from the flame and constant relative to the height of the smoke point lamp housing, h summary, this improvement in the testing apparatus and method allows a tester to position his or her head in a consistent position relative to the flame in the housing. Thus, more consistent and accurate data are obtained for the smoke point.
• the test consists of preparing a fuel sample, adding the fuel to lamp, burning the fuel via the wick fed lamp that is calibrated against a Icnown smoke point composition, in the present case, so-called standard Jet A or 1, and observing on the scale the correct height of the flame that can be achieved with the test fuel without smoking.
• the flame height is estimated to the nearest millimeter. All values in the Examples below are estimated to the nearest 0.5 mm and this significant figure is made possible by using the Experimentalist's headrest as shown in Fig. 1 and 2.
• this test is also a measure of combustion efficiency and pollution reduction when using the standard method for testing Jet fuel as will be recognized by those of skill in the art.
• the test indicates that a fuel additive is useful in reducing several different pollutant emissions produced during combustion of a hydrocarbon fuel, if the base scale millimeter, mm reading is lower than the observed additive-treated fuel in the mm reading.
• a fuel additive of so-called "Iso-Mixtene” a product of DSM chemicals, (formerly, Roche Vitamins, Inc) that is an intermediate in the synthesis of pure trans-beta- carotene and is an admixture of from 89-98% trans ⁇ carotene with the remainder being from 1.4 to 11% of isomeric forms of cis ⁇ carotene, the admixture being synthesized and packaged in an inert environment prior to use, was added at a 1.0 ml.
• Example 2 was repeated using astaxanthin but this compound was added to 3 grams per gallon of toluene and this solution was then admixed at 0.25 mis. into 50 mis. of Jet A fuel.
• This fuel, and additive exhibited an ASTM smoke point reading of 22.0, an improvement over that of standard Jet A.
• the result clearly demonstrates a positive concentration dependence of combustion improvement and thus a concomitant reduction in emissions with increasing astaxanthin concentration.
• Cis-stilbene 96% pure and available from Aldrich Chemical was admixed at a concentration of 0.25 mis. into 50 mis. of Jet A fuel and burned in the ASTM smoke point apparatus. A value of 21.0 was obtained, hi contrast Jet A exhibits abaseline value of 19.0.
• Bibenzyl 99% pure, available from Aldrich Chemical, was added in an amount of 8 grams of bibenzyl admixed into 500 mis. of toluene. 1.0 ml. of EDTMQ was added to complete the test fuel. 8 drops or 0.4 mis. was added into 50 mis. of Jet A and tested for Smoke Point. This fuel exhibited an ASTM smoke point of 22.0.
• a control sample of EDTMQ was prepared by mixing 5.0 mis. of EDTMQ and 500 mis. of toluene were added and 0.25 mis. of this solution was admixed into 50 mis. of Jet A fuel and tested for smoke point. A value of 19.0 was obtained.
• a fuel additive based on EXAMPLE 1 was prepared by mixing 2114 ppm of a first solution containing 500 ml of toluene, 12 drops of EDTMQ (Santoquin Tm ), 1.12 grams of Isomixtene and 3170 ppm per gallon of 2-ethyl hexyl nitrate (a cetane improver).
• the base diesel fuel was a 65/35 blend of an EPA-certified diesel fuel having 19.
• the base and additized fuels were tested for Emissions (NO x , hydrocarbons, particulate matter and carbon monoxide) using a 1992 Detroit Diesel Series 60, 350 HP turbocharged engine; the testing protocol was designed to qualify a fuel for a diesel fuel certificate in the State of Texas ("TCEQ Certification") at West Virginia University, Morgantown, W.VA.
• TCEQ Certification State of Texas
• the combusted, additized fuel displayed a 4.5% decrease in total NO x , an 8.1% decrease in hydrocarbon content, a 4.1% increase in particulate matter, and a 12.4% decrease in carbon monoxide over the base diesel fuel mixture run under the same conditions.

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• 2004
  • 2004-06-25 KR KR1020057024939A patent/KR101056482B1/ko not_active IP Right Cessation
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  • 2004-06-25 KR KR1020107025614A patent/KR101022726B1/ko not_active IP Right Cessation
  • 2004-06-25 EP EP04756041A patent/EP1651741A4/en not_active Withdrawn
  • 2004-06-25 JP JP2006517623A patent/JP2007521366A/ja active Pending
  • 2004-06-25 WO PCT/US2004/020301 patent/WO2005003263A2/en active Application Filing
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