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
  • 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
  • C10L1/143—Organic compounds mixtures of organic macromolecular compounds with organic non-macromolecular 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
  • C10L1/18—Organic compounds containing oxygen
  • C10L1/182—Organic compounds containing oxygen containing hydroxy groups; Salts thereof
  • C10L1/183—Organic compounds containing oxygen containing hydroxy groups; Salts thereof at least one hydroxy group bound to an aromatic carbon atom
  • C10L1/1832—Organic compounds containing oxygen containing hydroxy groups; Salts thereof at least one hydroxy group bound to an aromatic carbon atom mono-hydroxy
• • 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
  • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
  • C10L3/12—Liquefied petroleum gas
• • 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
  • C10L1/1616—Hydrocarbons fractions, e.g. lubricants, solvents, naphta, bitumen, tars, terpentine
• • 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
  • C10L2200/00—Components of fuel compositions
  • C10L2200/04—Organic compounds
  • C10L2200/0407—Specifically defined hydrocarbon fractions as obtained from, e.g. a distillation column
  • C10L2200/0415—Light distillates, e.g. LPG, naphtha
• • 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
  • C10L2270/00—Specifically adapted fuels
  • C10L2270/02—Specifically adapted fuels for internal combustion engines
  • C10L2270/023—Specifically adapted fuels for internal combustion engines for gasoline engines
• • 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
  • C10L2270/00—Specifically adapted fuels
  • C10L2270/08—Specifically adapted fuels for small applications, such as tools, lamp oil, welding

Definitions

• TITRE LPG fuel compositions, additives therefor and uses thereof
• the present invention relates to a novel fuel composition compri sing liquefied petroleum gas and one or more specific additives.
• a fuel composition is useful in several different applications.
• Preferred applications include feeding motor vehicles and in particular two- or three-wheeled motor vehicles, feeding gas burners in particular for heating or cooking applications, and oxyfuel-cutting and welding applications.
• the present invention also relates to an additive composition intended to be added to fuels based on liquefied petroleum gas.
• the present invention also relates to a method of operating a motor vehicle wherein the motor is fed with the inventive fuel composition, a method of operating a gas burner wherein the burner is fed with the inventive fuel composition, and a method of cutting and/or welding metallic materials using the inventive fuel composition.
• the density of natural gas is significantly lower than the density of air.
• the density of acetylene is close to the density of air, while that of propane and propylene gases exceed the density of air.
• the density of the gas used is important because in case of leak, natural gas is not likely to form low concave buildup and therefore reducing the risks of explosion.
• the relative density of natural gas is much lower than the density of air. Therefore, the leaked natural gas can be quickly volatilized, which allows a safer use of natural gas in small and relatively closed spaces.
• the explosion range of natural gas is narrow, as compared with that of acetylene explosion range, so the safety is much higher. %
• the ignition point of natural gas is higher than that of acetylene, propane and propylene. Therefore, for igniting natural gas, use should be made of an open flame, so that it is not safe to ignite the gas due to sporadic low-temperature fire.
• Liquefied petroleum gas also referred to as LPG
• advantages which are similar to those of natural gas when compared with acetylene.
• natural gas and LPG are composed of naturally occurring hydrocarbons.
• Acetylene needs to be produced which consumes a lot of electricity and coke, as well as a lot of pollutants.
• acetylene is burned black smoke i s produced, which is not the case with natural gas and LPG.
• Oxyfuel processes use oxygen and a fuel gas in order to cut or weld metals. Such processes are essentially based on a chemical reaction between pure oxygen and metal to form metal oxide at an elevated temperature. Such thermal cutting and welding processes are widely used in industry . They allow for example cutting metal plates having thicknesses ranging up to 500 mm or more.
• the cutting process uses a mixture of oxygen and hydrocarbon fuel gas to preheat the metal to its 'ignition' temperature (for instance 700°C - 900°C for steel) but well below its melting point.
• a cutting oxygen stream is then directed at the preheated spot, causing rapid oxidation of the heated metal . This generates large amount of heat due to exothermicity of the reaction. This heat supports continued oxidation of the metal as the cut progresses.
• Combusted gas and the pressurized oxygen j et flush the molten oxide away, exposing fresh surfaces for cutting.
• the metal in the path of the oxygen j et burns.
• the cut progresses, making a narrow slot, or kerf, through the metal .
• the fuel gas mainly used in oxyfuel processes has been acetylene, because il allows reaching the highest flame temperatures and achieving the highest cutting/welding speed.
• Other fuel cutting or welding fuel gases are propane, propylene, natural gas, etc.
• the flame temperatures produced by these fuels (in oxygen) are substantially lower compared to acetylene.
• the maximum flame temperatures for propane and natural gas in oxygen are about 2810°C and 2770°C respectively whereas acetylene allows reaching flame temperatures up to 3 160°C.
• acetylene has many drawbacks. In particular it is expensive, difficult to store and to transport, requires the use of almost pure oxygen for cutting ferrous metals and forms persistently adherent slag. Back firing is another drawback often encountered while using an oxyacetylene flame. As acetylene explodes when subj ected to high pressures, oxyacetylene flame cannot be used under deep water at depths greater than 20 feet under water.
• LPG liquefied petroleum gas
• WO 2008/072254 discloses a hydrocarbon fuel composition useful in oxyfuel processes comprising at least 99% by weight of a base gas such as liquefied petroleum gas and additives comprising 2 to 50 ppm organometallic compound, 100 to 5000 ppm aniline or substituted aniline and 100 to 5000 ppm toluidine.
• a base gas such as liquefied petroleum gas and additives comprising 2 to 50 ppm organometallic compound, 100 to 5000 ppm aniline or substituted aniline and 100 to 5000 ppm toluidine.
• WO 2020/208646 discloses an additive composition for oxyfuel applications (in particular wherein the fuel is a liquefied petroleum gas), comprising:
• organometallic compounds such compositions are toxic for the environment and the burning thereof generates polluting emissions.
• one obj ect of the present invention is to provide a LPG composition useful for cutting and welding applications, which provides an increased efficiency and in particular an increased burning speed.
• composition shall also be suitable for use in other applications including as a fuel for motor vehicles and for burners.
• LPG compositions containing a particular additive as defined below provided unexpected benefits when used as a fuel in an oxyfuel process.
• the Applicant has also discovered that the benefits of such a fuel composition were not limited to oxyfuel applications, and that the composition could also be used as a fuel for other applications such as -and not limited to- fuel for motor vehicles for example for two-wheeled and three-wheeled motor vehicles, and fuel for feeding gas burners in particular for heating and cooking applications.
• one obj ect of the present invention i s a hydrocarbon fuel composition
• a hydrocarbon fuel composition comprising liquefied petroleum gas and an additive selected from the compounds having developed formula (la) below and mixtures of such compounds: wherein
• R represents a linear or branched saturated or unsaturated hydrocarbon chain comprising from 8 to 24 carbon atoms, which may be substituted with one or more substituents chosen from hydroxy groups, hydroxyalkyl groups of formula -O-R’ wherein R’ denotes a C i to C4 alkyl radical, amino groups of formula -NR1R2 wherein Ri and R2 independently one from another denote a hydrogen atom or a C i to C4 alkyl radical, and n represents a number ranging from 1 to 10.
• the fuel composition according to the invention is easy to produce and to handle.
• the additive of formula (la) provides a catalytic combustion-supporting effect, so that the flame temperature i s increased, the preheating time is reduced and the burning speed is increased. Accelerating the oxidation (burning) of iron and oxygen increases the cutting speed, reduces the consumption of fuel and of oxygen, reduces the CO emissions and provides a better environmental protection and safety.
• the fuel composition of the invention further contains one or more antioxidant agents selected from the compounds comprising in their structure an alkyl-phenol group and/or phosphate or phosphite antioxidant agent(s).
• Another obj ect of the present invention is an additive composition
• an additive composition comprising: - an additive selected from the compounds having formula (la) below and mixtures of such compounds : wherein
• R represents a linear or branched saturated or unsaturated hydrocarbon chain comprising from 8 to 24 carbon atoms, which may be substituted with one or more substituents chosen from hydroxy groups, hydroxyalkyl groups of formula -O-R’ wherein R’ denotes a C i to C4 alkyl radical, amino groups of formula -NR1R2 wherein Ri and R2 independently one from another denote a hydrogen atom or a C i to C4 alkyl radical, and n represents a number ranging from 1 to 10, and
• antioxidant agents selected from the compounds compri sing in their structure an alkyl-phenol group and/or one or more phosphate or phosphite antioxidant agent(s).
• Another obj ect of the invention i s a process for cutting or welding a metallic material wherein a fuel composition as defined above is heated as a flame which is directed to said metallic material with an oxygen j et in order to achieve cutting or welding thereof.
• the present invention also relates to a method of operating a motor vehicle, comprising supplying a fuel composition as defined above to said motor, and burning the fuel composition into the motor.
• the present invention also relates to a method of operating a gas burner, comprising supplying a fuel composition as defined above to said burner, and burning the fuel composition into the burner.
• CN compound or group designates a compound or a group containing in its chemical structure N carbon atoms.
• the fuel base The fuel base :
• the fuel composition of the invention contains liquefied petroleum gas (LPG) as base fuel .
• LPG liquefied petroleum gas
• LPG consists of a mixture of hydrocarbons containing 3 and 4 carbon atoms, which composition may vary depending from the origin of the LPG.
• LPG generally contains propane and butanes (n-butane and/or iso-butane).
• the LPG may further contain C3 and/or C4 olefins such as propylene, 1 -butene, 2-butene, iso-butylene and butadiene.
• the fuel composition of the present invention preferably contains an amount of LPG of at least 90% by weight, more preferably at least 95% by weight, and even more preferably at least 98% by weight, and even better at least 99% by weight, with respect of the total weight of the composition.
• the amount of LPG ranges from 90 to 99.9% by weight, more preferably from 95 to 99.5% by weight, with respect of the total weight of the composition.
• the fuel composition of the invention contains an additive which is selected from the compounds having the following formula (la) : wherein
• R represents a linear or branched saturated or unsaturated hydrocarbon chain comprising from 8 to 24 carbon atoms, which may be substituted with substituents chosen from hydroxy groups, hydroxyalkyl groups of formula -O-R’ wherein R’ denotes a Ci to C4 alkyl radical, amino groups of formula -NR1R2 wherein Ri and R2 independently one from another denote a hydrogen atom or a Ci to C4 alkyl radical, and n represents a number ranging from 1 to 10, and from mixtures of compounds of formula (la).
• R represents a linear or branched saturated or unsaturated hydrocarbon chain comprising from 8 to 24 carbon atoms, which may be either substituted or not substituted.
• the sub stituent or substituents which is (are) present on said chain is (are) chosen from hydroxy groups (-OH), hydroxyalkyl groups of formula -O-R’ wherein R’ denotes a Ci to C4 alkyl radical, amino groups of formula -NR1R2 wherein Ri and R2 independently one from another denote a hydrogen atom or a Ci to C4 alkyl radical .
• said hydrocarbon chain is not substituted.
• R represents a linear or branched saturated or unsaturated hydrocarbon group comprising from 8 to 24 carbon atoms, preferably from 10 to 22 carbon atoms, even more preferably from 12 to 18 carbon atoms and even better from 14 to 16 carbon atoms.
• R represents a linear saturated or unsaturated hydrocarbon group.
• n preferably ranges from 1 to 5, preferably from 2 to 4 and most preferably n denotes 2 or 3.
• Particularly preferred compounds of formula (la) are bisethoxylated cardanol, tris-ethoxylated cardanol and mixtures thereof. Tris-ethoxylated cardanol is particularly preferred.
• the fuel composition of the invention contains a total amount of additive(s) of formula (la) preferably ranging from 0.01 % to 0.5% by weight, preferably from 0.02% to 0.3% by weight, and most preferably from 0.03 to 0.2% by weight relative to the total weight of the fuel composition.
• the fuel composition of the invention contains a total amount of bis-ethoxylated cardanol, trisethoxylated cardanol and mixtures thereof ranging from 0.01 % to 0.5% by weight, preferably from 0.02% to 0.3% by weight, and most preferably from 0.03 to 0.2% by weight relative to the total weight of the fuel composition.
• the second additive (phenolic antioxidant agent), optional :
• the fuel composition used in accordance with the present invention further comprises a second additive consisting of an antioxidant agent selected from the compounds comprising in their structure an alkyl-phenol group.
• antioxidant agents are different from the compounds of formula (I) described above.
• alkyl-phenol group it is meant a phenol group (that is to say, a benzene group substituted by one or more free hydroxy -OH group(s), in particular which is (are) not oxyalkylated), which is substituted by one or more alkyl groups.
• said antioxidant agents are selected from compounds comprising one or two phenolic group(s) which are substituted by one or more alkyl groups in Ci to C4 and preferably one or more alkyl groups selected from methyl, ethyl and t- butyl (tert-butyl).
• antioxidant agents are selected from methyl-t-butyl phenols, dimethyl-t-butyl phenols, ethyl-t-butyl phenols, t-butyl phenols, di-t-butyl phenols, tri-t-butyl phenols, di-t-butyl- dimethylphenols.
• antioxidant agents are selected from 2,6 di-t- butyl-4 methyl phenol (BHT), 4,6- di-tert-butyl-2-methylphenol, t-butyl hydroquinone (TBHQ), 2,6 di-t-butyl phenol, 2,4 di-t-butyl phenol, 2,4- dimethyl-6-t-butyl phenol, 2,4,6- tri-t-butyl phenol, 2,3 ,6-trimethyl phenol, 2,4,6-trimethyl phenol, 4,4'-methylene bis(2,6-di-t-butyl phenol) (CAS No.
• 2,6-di-t-butyl-4-(3 ,5 -di-t-butyl-4- hydroxyphenyl)phenol and mixtures thereof, and even most preferably from 2,6 di-t-butyl phenol, 2,4 di-t-butyl phenol, 2,6-di-t-butyl-4-(3 , 5- di-t-butyl-4-hydroxyphenyl)phenol, and mixtures thereof.
• the fuel composition according to the invention may advantageously comprise said phenolic antioxidant agent(s) in a total content ranging from 2 to 500 ppm, preferably from 5 to 250 ppm, and more preferably from 10 to 150 ppm by weight, relative to the total weight of the fuel composition.
• the fuel composition used in accordance with the present invention may also comprise one or more additional additives, different from the additives of formula (la) and of the phenolic antioxidant agents described above.
• the fuel composition further contains one or more amino antioxidant agent(s), which may be selected from aliphatic, cycloaliphatic and aromatic amines.
• the amino antioxidant agent(s) may be present in a content ranging from 0.5 to 1000 ppm, preferably from 1 to 500 ppm, and more preferably from 2 to 100 ppm by weight, relative to the total weight of the fuel composition.
• the fuel composition further contains one or more phosphate or phosphite antioxidant agent(s), which may be selected from tris(alkylphenyl)phosphates and tris(alkylphenyl)phosphites. Mention may be made in particular of tris(2,4-di-tert-butylphenyl)phosphate and tris(2,4-di-tert- butylphenyl)phosphite.
• the phosphate and phosphite antioxidant agent(s) may be present in a total content ranging from 0.2 to 50 ppm, preferably from 0.5 to 25 ppm, and more preferably from 1 to 20 ppm by weight, relative to the total weight of the fuel composition.
• the fuel composition may further contain any other type of additives, which may be chosen among the additives usually used in LPG fuel composition such as in particular lubricity improvers.
• additives usually used in LPG fuel composition such as in particular lubricity improvers.
• One skilled in the art will be able to select appropriate additives without departing from the scope of the invention.
• the invention further concerns an additive composition comprising:
• composition further compri ses one or more amino antioxidant agent(s) as described above.
• the additive composition contains at least one organic solvent.
• Preferred solvents are chosen from aliphatic hydrocarbons, aromatic hydrocarbons such as the solvents available under the commercial names Solvesso, and solvents comprising mixtures or paraffinic and aromatic compounds such as the solvents available under the commercial names Spirdane. Mention may also be made hydrocarbon fractions including naphtha, kerosene, gasoline and diesel fractions.
• the additive compositions contains :
• one or more amino antioxidant agent(s) in a total amount ranging from 0. 1 to 1 % by weight;
• phosphate or phosphite antioxidant agent(s) in a total amount ranging from 0.01 to 0.1 % by weight;
• the process of the invention involves forming a flame by combustion of the composition of the invention and applying said flame together with a j et of oxygen onto pieces of metals in order to achieve cutting or welding thereof.
• the flame heats the metal locally so that it is transformed into its oxide form and the resulting heated metal oxide is pushed off by the j et of oxygen.
• the fuel composition of the invention is also perfectly suitable for feeding all types of motors using LPG as fuel, such as in particular motors present in vehicles.
• motors include in particular motors of cars, of transport vehicles such as buses, of two-wheels vehicles such as mopeds, scooters, of three-wheels vehicles such as motor rickshaws (tuk-tuk), three-wheels scooters
• the vehicle is a three- wheels vehicle, and more preferably a motor rickshaw (tuk-tuk).
• the fuel composition of the invention is also perfectly suitable for feeding all types of gas burners whether they are used in industrial, collective or domestic applications.
• Such gas burners include for example heating burners and cooking burners, and preferably heating burners.
• CNC computer numerical control
• a fuel composition was prepared by mixing 55 ml of the above additive with 30.45 1 of liquefied petroleum gas.
• the fuel composition was tested for oxy-cutting a 56 mm plate of mild steel, IS :2062 grade.
• the cutting speed was increased step by step while keeping an acceptable quality of surface finish as approved by a cutting expert.
• the composition of the invention allowed achieving a maximum cutting speed of 250 mm/min which is very high, while providing a cut surface having a perfect fini sh.

Landscapes

• Chemical & Material Sciences (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Emergency Medicine (AREA)
• Liquid Carbonaceous Fuels (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=79687061

Family Applications (1)

Country Status (2)

Citations (7)

• 2022
  • 2022-01-17 EP EP22151838.4A patent/EP4212607A1/de active Pending
• 2023
  • 2023-01-17 WO PCT/EP2023/050984 patent/WO2023135325A1/en unknown

Patent Citations (7)

Also Published As

Similar Documents

Legal Events