EP0049921A1 - Clear liquid fuel mixture for combustion engines - Google Patents
Clear liquid fuel mixture for combustion engines Download PDFInfo
- Publication number
- EP0049921A1 EP0049921A1 EP81201092A EP81201092A EP0049921A1 EP 0049921 A1 EP0049921 A1 EP 0049921A1 EP 81201092 A EP81201092 A EP 81201092A EP 81201092 A EP81201092 A EP 81201092A EP 0049921 A1 EP0049921 A1 EP 0049921A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- weight
- clear liquid
- mixture
- atoms
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 239000000203 mixture Substances 0.000 title claims abstract description 92
- 239000007788 liquid Substances 0.000 title claims abstract description 42
- 239000000446 fuel Substances 0.000 title claims abstract description 23
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 150000001298 alcohols Chemical class 0.000 claims abstract description 38
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 30
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000013543 active substance Substances 0.000 claims abstract description 19
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 8
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 8
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 5
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical group CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 12
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 8
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 claims description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 4
- 150000007513 acids Chemical class 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical group CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 claims description 2
- 238000007036 catalytic synthesis reaction Methods 0.000 claims description 2
- 238000000629 steam reforming Methods 0.000 claims 1
- 239000004094 surface-active agent Substances 0.000 description 6
- 239000000839 emulsion Substances 0.000 description 5
- 235000014113 dietary fatty acids Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000194 fatty acid Substances 0.000 description 4
- 229930195729 fatty acid Natural products 0.000 description 4
- 239000004530 micro-emulsion Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- 238000005191 phase separation Methods 0.000 description 3
- 239000005642 Oleic acid Substances 0.000 description 2
- 125000005907 alkyl ester group Chemical group 0.000 description 2
- 239000007859 condensation product Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- 150000003077 polyols Chemical class 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 125000002877 alkyl aryl group Chemical group 0.000 description 1
- -1 alkyl phenols Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 238000001193 catalytic steam reforming Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 229940049964 oleate Drugs 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 235000011007 phosphoric acid Nutrition 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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
- C10L1/32—Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions or oil emulsions
- C10L1/328—Oil emulsions containing water or any other hydrophilic phase
-
- 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
-
- 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
- C10L1/12—Inorganic compounds
- C10L1/1233—Inorganic compounds oxygen containing compounds, e.g. oxides, hydroxides, acids and salts thereof
- C10L1/125—Inorganic compounds oxygen containing compounds, e.g. oxides, hydroxides, acids and salts thereof water
-
- 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
- C10L1/1824—Organic compounds containing oxygen containing hydroxy groups; Salts thereof hydroxy group directly attached to (cyclo)aliphatic carbon atoms mono-hydroxy
Definitions
- the invention relates to a clear, liquid fuel mixture for combustion engines, which mixture comprises:
- a special combination of surface-active agents is required for the dispersion of alcohol and water in petrol or oil in order to obtain a stable water-containing fuel mixture with a water-soluble alcohol, such as methanol.
- a water-soluble alcohol such as methanol.
- alcohol fully soluble in water, methanol, ethanol, propanol or a mixture of these alcohols is applied.
- the Dutch patent application 7416290 relates to the operation of Otto and rotary reciprocating engines, using petrol as fuel simultaneously with water-containing crude methanol. It is true that the alcohol used is cheap, but this is amply offset by the disadvantage that for each motor vehicle separate tanks and separate injection systems for the petrol and for the water-containing crude methanol are required. When combined in advance, such a mixture will show phase separation, which makes application impossible. In order to be able to use this fuel each motor vehicle, will require the necessary investments.
- the European patent application 12345 relates to engine and turbine fuels containing water and alcohol and using a special and expensive nonionogenic emulsifier to obtain good stability, even in coldness. Relatively much stirring energy is required in order to prepare a milky emulsion of the various components. Another disadvantage is that, if this fuel mixture has been left to stand for some time, or if unfortunately water has found its way into it, further stirring energy will be required again in order to obtain an emulsion. This is rather problematical if this fuel mixture is contained in the tank of a motor vehicle. Furthermore, it is difficult to determine if phase separation has already taken place. The stability in coldness, too, is not quite satisfactory.
- the purpose of the invention is to remove the said disadvan-, tages and to provide a clear liquid fuel mixture for combustion engines, as stated in the preamble, which fuel mixture is cheap, does not separate out even after it has been left to stand for a long time, which is stable at -20 °C and which allows the various components to be mixed with each other virtually without use of stirring energy to form a clear liquid mixture.
- a further purpose of the invention is to provide a fuel mixture containing relatively few petroleum-recovered hydrocarbons and relatively many liquid raw materials which can be prepared form natural gas and/or coal. Furthermore, the fuel mixture must be applicable in the existing engines.
- the stability range i.e. the range in which a clear mixture is obtained and/or kept, to be as wide as possible, particularly at -20 °C. This will strongly reduce the risk of phase separation at fluctuations in the composition of the mixture. Furthermore, it will also give greater freedom in the composition of the fuel mixture.
- the clear fuel mixture consists of:
- the alchols with 4-12 C atoms not or sparingly solubility in water may also be divalent alcohols, such as diols. Preference, however, is given to monovalent alcohols.
- the mixture can be converted very simply into a clear whole. This can be done by shaking, filling of the storage tank or simply by transport.
- micro-emulsion is formed, which is understood to mean a transparant, stable, liquid system consisting of a least two liquids which cannot or hardly be mixed, in which system one liquid is dispersed by means of one or more surface-active substances in the other.
- the drop size is substantially smaller than that of an ordinary emulsion and,in consequence, a micro-emulsion, unlike an ordinary emulsion, is transparent.
- the formation of micro-emulsions requires no special measures. They are formed spontaneously as soon as the various components are brought together.
- Sparingly soluble in water is understood here to mean tha only very subordinate quantities will dissolve in water, i.e. smaller than 25 % by weight, preferably smaller than 10 % weight.
- Another major advantage of the invention is that, without adversely affecting the clearness and stability of the fuel mixture, the quantities of water-soluble alcohols and alcohols not or sparingly soluble in water can be varied in respect of each other.
- liquid mixture according to the invention may con- tain, for instance:
- the alcohol with 2-4 C atoms fully soluble in water is preferably tertiary butanol, together with the small quantities of alcohols not or sparingbly soluble in water.
- the alcohol with 4-12 C atoms not or sparingly soluble in water is n-butanol or n-pentanol.
- the quantity of alcohols with 4-12 C atoms not or sparingly soluble in water and contained in the said liquid mixture preferably amounts to 5-15 % by weight.
- the mixture may in addition yet contain 0.01-5 % by weight of alcohols with 2-4 C atoms fully soluble in water.
- the quantities of water and methanol in the liquid mixture can be varied in respect of each other.
- the liquid mixture preferably contains 1-5 % by weight of water and 2-15 % by weight of methanol.
- surface-active substances are required for dispersing the water and the alcohols in the petrol, in which process, in the conviction of the applicant, a micro-emulsion is obtained.
- anionogenic or nonionogenic surface-active substances and specifically combinations thereof are applied.
- a mixture of surface-active acid and salts of these acids as surface-active substances have the greatest preference, because these have been found very suitable and are, moreover, cheap.
- the liquid mixture preferably contains 0.1-10 Z by weight of surface-active substances. Th quantity can easily be determined by one skilled in the art. If a nonclear emulsion is formed, the quantity must be increased.
- a mixture of methanol, water and alcohols not or sparingly soluble in water can be obtained directly by catalytic steam reforming of methane an successive catalytic synthesis of the gas mixture obtained, without sccessive purification, such as removal of water and higher alcohols.
- the mixture formed is extremely suitable for dispersion in petrol by means of surface-active substances and optionally a higher alcohol, in which process a mixture is obtained which remains clear and stable within a wide temperature range (-20 °C to +30 °C).
- the mixture obtained contains, in respect of methanol, 10-25 % by volume of water and 0.05-0.5 % by volume or more of higher alcohols.
- the mixture may additionally contain an ether with 2-8 C atoms, specifically methyl-tertiary butyl- ether.
- the alcohol not soluble in water can then be partly replaced by the said ether.
- 0.01 to 15 % by weight, specifically 0.05-10 % by weight, of ether is added.
- the mixture of surface-active substances was dissolved in the alcohol mixture and as such added to the petrol.
- the mixture contains 10 ml regular petrol (RON 88; MON 82.), 0.8 g ammonium oleate-oleic acid mixture in the proportion of 60 : 40; 1.8 g crude methanol of the composition as in example I.
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)
- Liquid Carbonaceous Fuels (AREA)
Abstract
- a. a liquid hydrocarbon mixture;
- b. 1-10 % by weight of water;
- c. 0.1-25 % by weight of methanol as alcohol fully soluble in water;
- d. 0.1-15 % by weight of surface-active substances; and
- e. 0.01-20 % by weight of alcohols with 4 to 12 C atoms not or sparingly soluble in water.
Description
- The invention relates to a clear, liquid fuel mixture for combustion engines, which mixture comprises:
- a. a liquid hydrocarbon mixture;
- b. water;
- c. an alcohol fully soluble in water and
- d. surface-active substances.
- Such a clear, liquid fuel mixture is know from United States patent 4,002,435.
- The fuel mixuture described in this patent specification consists of:
- a. petrol or diesel oil;
- b. 0.1-10 % of water;
- c. 0.1-20 % of an alcohol fully soluble in water and
- d. a combination of surface-active agents, consisting of:
- 1. a salt of saturated or unsaturated higher fatty acid;
- 2. an unsaturated organic acid; and
- 3. an ethylene oxide condensation product.
- According to this patent specification, a special combination of surface-active agents is required for the dispersion of alcohol and water in petrol or oil in order to obtain a stable water-containing fuel mixture with a water-soluble alcohol, such as methanol. As alcohol fully soluble in water, methanol, ethanol, propanol or a mixture of these alcohols is applied.
- The disadvantage of this fuel mixture is that it is relatively expensive, because special surface-active agents are necessary for dispering the alcohols fully soluble in water in petrol to a mixture which is stable over a wide temperature range.
- The Dutch patent application 7416290 relates to the operation of Otto and rotary reciprocating engines, using petrol as fuel simultaneously with water-containing crude methanol. It is true that the alcohol used is cheap, but this is amply offset by the disadvantage that for each motor vehicle separate tanks and separate injection systems for the petrol and for the water-containing crude methanol are required. When combined in advance, such a mixture will show phase separation, which makes application impossible. In order to be able to use this fuel each motor vehicle, will require the necessary investments.
- The European patent application 12345 relates to engine and turbine fuels containing water and alcohol and using a special and expensive nonionogenic emulsifier to obtain good stability, even in coldness. Relatively much stirring energy is required in order to prepare a milky emulsion of the various components. Another disadvantage is that, if this fuel mixture has been left to stand for some time, or if unfortunately water has found its way into it, further stirring energy will be required again in order to obtain an emulsion. This is rather problematical if this fuel mixture is contained in the tank of a motor vehicle. Furthermore, it is difficult to determine if phase separation has already taken place. The stability in coldness, too, is not quite satisfactory.
- The purpose of the invention is to remove the said disadvan-, tages and to provide a clear liquid fuel mixture for combustion engines, as stated in the preamble, which fuel mixture is cheap, does not separate out even after it has been left to stand for a long time, which is stable at -20 °C and which allows the various components to be mixed with each other virtually without use of stirring energy to form a clear liquid mixture.
- A further purpose of the invention is to provide a fuel mixture containing relatively few petroleum-recovered hydrocarbons and relatively many liquid raw materials which can be prepared form natural gas and/or coal. Furthermore, the fuel mixture must be applicable in the existing engines.
- It has been found that higher alcohols not or sparingly soluble in water have a positive effect on the increase of the stability range of clear fuel mixtures containing hydrocarbons, methanol and water, even if these higher alcohols are present in very small quantities. Very small quantities are understood to mean quantities in the order of 0.02 % by volume.
- It is very important for the stability range, i.e. the range in which a clear mixture is obtained and/or kept, to be as wide as possible, particularly at -20 °C. This will strongly reduce the risk of phase separation at fluctuations in the composition of the mixture. Furthermore, it will also give greater freedom in the composition of the fuel mixture.
- According to the invention the clear fuel mixture consists of:
- a. a liquid hydrocarbon mixture;
- b. 1-10 % by weight of water;
- c. 0.1-25 % by weight of methanol as alcohol fully soluble in water;
- d. 0.1-15 % by weight of surface-active substances and
- e. 0.01-20 % by weight of alcohols with 4-12 C atoms not or sparingly soluble in water.
- The alchols with 4-12 C atoms not or sparingly solubility in water may also be divalent alcohols, such as diols. Preference, however, is given to monovalent alcohols.
- The mixture can be converted very simply into a clear whole. This can be done by shaking, filling of the storage tank or simply by transport.
- It is supposed that a so-called micro-emulsion is formed, which is understood to mean a transparant, stable, liquid system consisting of a least two liquids which cannot or hardly be mixed, in which system one liquid is dispersed by means of one or more surface-active substances in the other. The drop size is substantially smaller than that of an ordinary emulsion and,in consequence, a micro-emulsion, unlike an ordinary emulsion, is transparent. Apart form the limited amount of energy required for mixing the components, the formation of micro-emulsions requires no special measures. They are formed spontaneously as soon as the various components are brought together.
- Sparingly soluble in water is understood here to mean tha only very subordinate quantities will dissolve in water, i.e. smaller than 25 % by weight, preferably smaller than 10 % weight.
- The fuel mixture according to the invention has the following advantages:
- a. it is clear;
- b. requires little of no stirring energy during its preparation;
- c. is stable to at least -20 °C;
- d. gives lower emission of harmful components in the exhaust gases than petrol;
- e. gives good knock resistance so that the addition of tetra-alkyl lead to raise the octane number is not necessary.
- It has specifically been found that, in addition to small quantities of these higher alcohols not or sparingly soluble in water, a larger quantity of alcohols with 2-4 C atoms fully soluble in water has the effect that a substantially smaller quantity of surface-active agents is required.
- Another major advantage of the invention is that, without adversely affecting the clearness and stability of the fuel mixture, the quantities of water-soluble alcohols and alcohols not or sparingly soluble in water can be varied in respect of each other.
- Thus the liquid mixture according to the invention may con- tain, for instance:
- a. 5-20 X by weight of alcohols with 2-4 C atoms fully soluble in water and
- b. 0.01-5 X by weight of alcohols with 4-12 C atoms not or sparingly soluble in water.
- The alcohol with 2-4 C atoms fully soluble in water is preferably tertiary butanol, together with the small quantities of alcohols not or sparingbly soluble in water.
- Most preference is given to the addition or use of larger quantities of alcohols with 4-12 C atoms not or sparingly soluble in water. Thus the quantity of surface-active substances can be reduced, while a simultaneous widening of the stability range will be found. Thus the mixture preferred most contains 5-20 % by weight of alcohols with 4-12 C atoms not or sparingly soluble in water.
- Preferably the alcohol with 4-12 C atoms not or sparingly soluble in water is n-butanol or n-pentanol. The quantity of alcohols with 4-12 C atoms not or sparingly soluble in water and contained in the said liquid mixture preferably amounts to 5-15 % by weight.
- The mixture may in addition yet contain 0.01-5 % by weight of alcohols with 2-4 C atoms fully soluble in water.
- As stated earlier, the quantities of water and methanol in the liquid mixture can be varied in respect of each other. The liquid mixture preferably contains 1-5 % by weight of water and 2-15 % by weight of methanol.
- For dispersing the water and the alcohols in the petrol, in which process, in the conviction of the applicant, a micro-emulsion is obtained, surface-active substances are required. Preferably anionogenic or nonionogenic surface-active substances and specifically combinations thereof are applied. A mixture of surface-active acid and salts of these acids as surface-active substances have the greatest preference, because these have been found very suitable and are, moreover, cheap. The liquid mixture preferably contains 0.1-10 Z by weight of surface-active substances. Th quantity can easily be determined by one skilled in the art. If a nonclear emulsion is formed, the quantity must be increased.
- As anionogenic surface-active substances the following are eligible:
- - salst of surface-active carboxylic acids, specifically fatty acids with 10 to 20 C atoms;
- - sulphuric acid esters, specifically alkyl esters with an alkyl group of 10 to 20 C atoms;
- - alkyl and alkylaryl sulphonates, in which the alkyl group has 10 to 20 C atoms and the alkylaryl group 10 to 26 C atoms;
- - paraffin sulphonates, lignin sulphonates;
- - phosphoric acid esters, specifically alkyl esters with an alkyl group of 10 to 20 C atoms;
- - salts of surface-active phophorous and phosphoric acids.
- As nonionogenic surface-active substances the following are eligible:
- - ethylene oxide condensation products with, for instance, alcohols with 6 to 18 C atoms, alkyl phenols, polyols or propylene oxide;
- - polyhydroxy compounds, such as esters of polyols and fatty acids;
- - fatty acids, both saturated and unsaturated, with 10 to 20 C atoms.
- It is a great advantage of the present invention that a mixture can directly be applied as obtained in the preparation of methanol, starting form methane, without water and higher alcohols having to be removed.
- A mixture of methanol, water and alcohols not or sparingly soluble in water can be obtained directly by catalytic steam reforming of methane an successive catalytic synthesis of the gas mixture obtained, without sccessive purification, such as removal of water and higher alcohols. The mixture formed is extremely suitable for dispersion in petrol by means of surface-active substances and optionally a higher alcohol, in which process a mixture is obtained which remains clear and stable within a wide temperature range (-20 °C to +30 °C). The mixture obtained contains, in respect of methanol, 10-25 % by volume of water and 0.05-0.5 % by volume or more of higher alcohols.
- According to the invention it is possible to incorporate the mixture of methanol, water and higher alcohols in hydrocarbons just by means of surface-active substanres, although it is an advantage to add an extra quantity of alcohol with 2 to 12 C atoms, because the quantity of surface-active substances required may then be smaller. Preferably, 5-20 % by weight of these alcohols is added.
- In order to even further improve the stability of the clear liquid mixture obtained even further, the mixture may additionally contain an ether with 2-8 C atoms, specifically methyl-tertiary butyl- ether. The alcohol not soluble in water can then be partly replaced by the said ether. Preferably 0.01 to 15 % by weight, specifically 0.05-10 % by weight, of ether is added.
- Clear liquid mixtures were formed by bringing together in a test tube:
- Premium petrol (RON - 99; MON - 88; boiling range 35 to 200 °C); methanol in the form of crude methanol with 21.5 % by volume of water and 0.02 % by volume of alcohols not or sparingly soluble in water, such as butanol, pentanol and higher alcohols, and 0.08 % by volume of alcohols completely soluble in water, such as ethanol and propanol; or pure methanol with 21.5 % by volume of water; a mixture of Na-oleate and oleic acid in the ratio of 80 : 20 and n-butanol.
- The mixture of surface-active substances was dissolved in the alcohol mixture and as such added to the petrol.
- The quantities of the various components are mentioned in the following table, which also states if the mixture is stable after 1 day's storage at -20 °C.
-
- With 1.00 g methanol (pure and crude) the same results are obtained.
- It is, furthermore, found that, if 0.75 to 1.75 g crude methanol is added, a clear mixture is obtained at both surfactant butanol ratios. It has, furhtermore, been found that the stability range is twice as large as that when pure methanol with 21.5 % by volume of water is used.
- In order to show the effects of different types of alcohol on the stability of the clear liquid mixture according to the invention, the quantities in grammes of each type of alcohol at +20 °C respectively -20°C to be added in order to obtain a clear stable liquid mixture were determined.
- The mixture contains 10 ml regular petrol (RON 88; MON 82.), 0.8 g ammonium oleate-oleic acid mixture in the proportion of 60 : 40; 1.8 g crude methanol of the composition as in example I.
-
- These results show that the non-soluble alcohols, particularly n-butanol and n-pentanol, clearly produce the greatest effects.
- In this example the effect of the addition of methyl-tertiary- butylether (MTBE) on the stability of the liquid mixtures according to the invention is shown.
-
Claims (15)
characterized in that the fuel mixture consists of:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT81201092T ATE11676T1 (en) | 1980-10-09 | 1981-10-02 | CLEAR, LIQUID FUEL MIXTURE FOR INTERNAL COMBUSTION ENGINES. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8005581 | 1980-10-09 | ||
NL8005581A NL8005581A (en) | 1980-10-09 | 1980-10-09 | CLEAR LIQUID FUEL MIXTURE FOR COMBUSTION ENGINES. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0049921A1 true EP0049921A1 (en) | 1982-04-21 |
EP0049921B1 EP0049921B1 (en) | 1985-02-06 |
Family
ID=19836001
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81201092A Expired EP0049921B1 (en) | 1980-10-09 | 1981-10-02 | Clear liquid fuel mixture for combustion engines |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0049921B1 (en) |
AT (1) | ATE11676T1 (en) |
DE (1) | DE3168809D1 (en) |
NL (1) | NL8005581A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0117532A2 (en) * | 1983-03-01 | 1984-09-05 | Union Rheinische Braunkohlen Kraftstoff Aktiengesellschaft | Fuel and use thereof |
EP0117915A2 (en) * | 1982-12-09 | 1984-09-12 | Union Carbide Corporation | Diesel fuels |
DE3330165A1 (en) * | 1983-08-20 | 1985-03-07 | Union Rheinische Braunkohlen Kraftstoff AG, 5000 Köln | ENGINE FUEL |
EP0146907A2 (en) * | 1983-12-16 | 1985-07-03 | Uni-Commerz Handelsgesellschaft mbH | Solvent for carburetter fuel |
EP0227176A2 (en) * | 1985-12-19 | 1987-07-01 | SNAMPROGETTI S.p.A. | Oxygenated, high-octane-number composition for fuel, and method for its preparation |
US4713087A (en) * | 1986-10-14 | 1987-12-15 | Texaco Inc. | Carrier composition for introducing additives to a motor fuel |
US4744796A (en) * | 1986-02-04 | 1988-05-17 | Arco Chemical Company | Microemulsion fuel system |
WO1988004311A1 (en) * | 1986-12-10 | 1988-06-16 | Dyno Industrier A/S | A method for upgrading of waxy oils to products that can be used as light fuel oils, diesel fuel and other upgraded oils, the products so obtained and an application of the products as substitutes |
GB2231060A (en) * | 1987-09-11 | 1990-11-07 | Intevep Sa | Hydrocarbon-in-water-emulsions |
GB2209762B (en) * | 1987-09-11 | 1992-05-20 | Intevep Sa | Viscous hydrocarbon in water emulsions |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7115922A (en) * | 1970-11-19 | 1972-05-24 | ||
US4002435A (en) * | 1971-11-17 | 1977-01-11 | Wenzel Edward C | Clear and stable liquid fuel compositions for internal combustion engines |
US4093029A (en) * | 1976-06-21 | 1978-06-06 | Mobil Oil Corporation | Utilization of low BTU natural gas |
US4154580A (en) * | 1974-03-22 | 1979-05-15 | Mobil Oil Corporation | Method for producing a stabilized gasoline-alcohol fuel |
EP0012345A1 (en) * | 1978-12-16 | 1980-06-25 | Bayer Ag | Fuel oils and their application |
-
1980
- 1980-10-09 NL NL8005581A patent/NL8005581A/en not_active Application Discontinuation
-
1981
- 1981-10-02 AT AT81201092T patent/ATE11676T1/en active
- 1981-10-02 EP EP81201092A patent/EP0049921B1/en not_active Expired
- 1981-10-02 DE DE8181201092T patent/DE3168809D1/en not_active Expired
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7115922A (en) * | 1970-11-19 | 1972-05-24 | ||
DE2150362A1 (en) * | 1970-11-19 | 1972-05-25 | Goodyear Tire & Rubber | fuel |
FR2114465A5 (en) * | 1970-11-19 | 1972-06-30 | Goodyear Tire & Rubber | |
US3822119A (en) * | 1970-11-19 | 1974-07-02 | Goodyear Tire & Rubber | Anti-pollution anti-knock gasoline |
US4002435A (en) * | 1971-11-17 | 1977-01-11 | Wenzel Edward C | Clear and stable liquid fuel compositions for internal combustion engines |
US4154580A (en) * | 1974-03-22 | 1979-05-15 | Mobil Oil Corporation | Method for producing a stabilized gasoline-alcohol fuel |
US4093029A (en) * | 1976-06-21 | 1978-06-06 | Mobil Oil Corporation | Utilization of low BTU natural gas |
EP0012345A1 (en) * | 1978-12-16 | 1980-06-25 | Bayer Ag | Fuel oils and their application |
DE2854540A1 (en) * | 1978-12-16 | 1980-06-26 | Bayer Ag | FUELS |
US4297107A (en) * | 1978-12-16 | 1981-10-27 | Bayer Aktiengesellschaft | Fuels and their use |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0117915A2 (en) * | 1982-12-09 | 1984-09-12 | Union Carbide Corporation | Diesel fuels |
EP0117915A3 (en) * | 1982-12-09 | 1986-05-07 | Union Carbide Corporation | Diesel fuels |
EP0117532A2 (en) * | 1983-03-01 | 1984-09-05 | Union Rheinische Braunkohlen Kraftstoff Aktiengesellschaft | Fuel and use thereof |
EP0117532A3 (en) * | 1983-03-01 | 1986-05-21 | Union Rheinische Braunkohlen Kraftstoff Aktiengesellschaft | Fuel and use thereof |
DE3330165A1 (en) * | 1983-08-20 | 1985-03-07 | Union Rheinische Braunkohlen Kraftstoff AG, 5000 Köln | ENGINE FUEL |
EP0171440A1 (en) * | 1983-08-20 | 1986-02-19 | DEA Mineraloel Aktiengesellschaft | Motor fuel |
EP0146907A2 (en) * | 1983-12-16 | 1985-07-03 | Uni-Commerz Handelsgesellschaft mbH | Solvent for carburetter fuel |
EP0146907A3 (en) * | 1983-12-16 | 1987-04-29 | Uni-Commerz Handelsgesellschaft mbH | Solvent for carburetter fuel |
EP0227176A2 (en) * | 1985-12-19 | 1987-07-01 | SNAMPROGETTI S.p.A. | Oxygenated, high-octane-number composition for fuel, and method for its preparation |
EP0227176A3 (en) * | 1985-12-19 | 1988-03-23 | SNAMPROGETTI S.p.A. | Oxygenated, high-octane-number composition for fuel, and method for its preparation |
US4744796A (en) * | 1986-02-04 | 1988-05-17 | Arco Chemical Company | Microemulsion fuel system |
US4713087A (en) * | 1986-10-14 | 1987-12-15 | Texaco Inc. | Carrier composition for introducing additives to a motor fuel |
WO1988004311A1 (en) * | 1986-12-10 | 1988-06-16 | Dyno Industrier A/S | A method for upgrading of waxy oils to products that can be used as light fuel oils, diesel fuel and other upgraded oils, the products so obtained and an application of the products as substitutes |
GB2231060A (en) * | 1987-09-11 | 1990-11-07 | Intevep Sa | Hydrocarbon-in-water-emulsions |
GB2209762B (en) * | 1987-09-11 | 1992-05-20 | Intevep Sa | Viscous hydrocarbon in water emulsions |
GB2231060B (en) * | 1987-09-11 | 1992-05-20 | Intevep Sa | Hydrocarbon-in-water emulsions |
Also Published As
Publication number | Publication date |
---|---|
NL8005581A (en) | 1982-05-03 |
ATE11676T1 (en) | 1985-02-15 |
EP0049921B1 (en) | 1985-02-06 |
DE3168809D1 (en) | 1985-03-21 |
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