JP2008045022A - Emulsion fuel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a new emulsion fuel which does not separate a fuel oil from water and maintains an emulsified state even in long-term preservation even without using an additive such as an emulsifying agent, stabilizer, etc., does not separate a fuel oil from water even by change in temperature, has excellent long-term storage stability and exhibits stable and optimal combustion efficiency and to provide a method for producing an emulsion fuel, which easily and surely produces the emulsion fuel. <P>SOLUTION: The mulching fuel comprises a fuel oil and functional water without adding a surfactant and an emulsifying agent. Especially the function water is electronic water and harmonic reducing water, preferably the emulsion fuel contains further sodium chloride. The method for producing the emulsion fuel comprises a first process for mixing a fuel oil with harmonic reducing water with stirring to give an emulsion and a second process for mixing the emulsion obtained by the first process with electronic water with stirring. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a novel emulsion fuel, and more particularly to an emulsion fuel that does not perform oil-water separation even in a long-term storage state and can realize efficient combustion in a stable combustion state.

Conventionally, fossil fuels and the like have been mainstream for most of the fuels used.
However, when such fuel is burned, pollutants such as nitrogen oxides (NO _X ), sulfur oxides (SO _X ), carbon monoxide (CO), and dust are discharged, which is a major cause of environmental pollution. It has become.
On the other hand, development projects such as alternative fuels have been actively conducted along with various researches to reduce pollutants in the air environment.

Oxygen is required to burn fossil fuels, and air is generally used as the oxygen source, but the air contains about 78% nitrogen, which leads to exhaust gas loss and It becomes a source of nitrogen oxides.
If the combustion air is preheated for the purpose of reducing exhaust gas loss, the nitrogen oxides in the exhaust gas will increase dramatically, and there is a current situation that there is a tradeoff between energy saving and air pollution prevention.
On the other hand, although it has been confirmed that combustion using oxygen hardly generates nitrogen oxides, there is a problem that it is difficult to use because of high combustion temperature.

  Recently, as part of measures to prevent atmospheric pollution, many studies have been conducted on the use of emulsion fuels in which water is mixed with fuel oil. Emulsion fuels are a fundamental issue in the industry regarding energy saving and pollution prevention. It is an effective fuel.

In general, an emulsion fuel in which water is mixed with fuel oil includes a water-in-oil type containing fine water droplets in oil and an oil-in-water type containing fine oil droplets in water. There are two types of oil (oil in water), and water-in-oil type is generally used as the emulsion used for fuel.
Such a water-in-oil emulsion fuel has the advantage that when it is burned, the water vapor makes the oil finer, increasing the surface area of the oil, thereby increasing the contact area between the oil and air and causing complete combustion.

However, in order to obtain the effects as described above, the emulsion fuel must maintain the optimum fuel oil / water ratio to keep the emulsion stable.
In particular, when the combustion load of a boiler or the like is fluctuated, adjustment of the optimum state with respect to the fuel oil / water mixing ratio is required, and thus there is a problem that a fuel oil / water mixing control device is necessary. .
Also, in the case of emulsion fuel, the production of nitrogen oxides is greatly reduced, which is the effect of finely divided water.

As a conventional emulsion fuel, it is good that a stable emulsion fuel can be obtained by mixing fuel oil such as heavy oil with water using a mixed additive (emulsifier, stabilizer, surfactant, etc.) It is known (Japanese Patent No. 3776188, Japanese Patent No. 3103923, etc.).
However, even when such additives are mixed, there are problems in that long-term storage stability is insufficient and that a large amount of emulsifier is required, and recent development of emulsion fuels has been directed to research on additives, etc. This is the current situation.

However, even if an emulsion fuel is produced using an emulsifier or the like, the conventional emulsion fuel cannot be stored for a long time because oil and water are separated after a long period of time, sometimes 20 minutes to 7 days. there were.
Actually, when the obtained emulsion fuel is stored in a tank, water gradually accumulates at the bottom, and it is necessary to extract water.

Furthermore, since conventional emulsion fuel has a heat loss with respect to the mixed water, there is a problem that it cannot be used for applications such as boilers that require high thermal efficiency.
As described above, the conventional emulsion fuel has a problem that the oil and water are separated over time, and the composition of the oil and water in the emulsion fuel is changed.
Japanese Patent No. 3776188 Japanese Patent No. 3103923

The object of the present invention is to solve the above problems and maintain an emulsified state without separation of fuel oil and water even when stored for a long period of time without using additives such as emulsifiers and stabilizers. In addition, by providing a new emulsion fuel that does not separate fuel oil and water even with temperature changes, has excellent long-term storage stability, and can exhibit stable and optimum combustion efficiency. is there.
Furthermore, an object of the present invention is to provide an emulsion fuel that can save energy by realizing efficient combustion, reduce pollution emissions such as nitrogen oxides and carbon dioxide, and promote energy saving. Is to provide.
Another object of the present invention is to provide a method for producing an emulsion fuel that can easily and reliably produce the emulsion fuel of the present invention.

  As a result of diligent research, the present inventors have found that the use of functional water makes it possible to add fuel oil and water to conventional emulsion fuels without the need to add additives such as emulsifiers and stabilizers, which were essential additive components. The present inventors have found that a good emulsified state can be maintained for a long period of time.

The emulsion fuel of the present invention is characterized by comprising fuel oil and functional water, and in particular, the functional water is electronic water and harmonic reduced water.
Preferably, the emulsion fuel of the present invention is characterized in that the emulsion fuel further contains sodium chloride.
The method for producing an emulsion fuel of the present invention comprises a first step of stirring and mixing fuel oil and harmonic reduced water to obtain an emulsion, and then a second step of mixing and stirring the emulsion obtained in the one step and electronic water. It consists of a process.
Preferably, in the method for producing an emulsion fuel, sodium chloride is dissolved in advance in harmonic reduced water.

The emulsion fuel of the present invention is excellent in long-term storage tank stability because fuel oil and water do not separate even when stored for a long period of time.
Accordingly, handling is easy, stable combustion efficiency can be maintained over a long period of time, and the amount of nitrogen oxides and dust generated can be reduced.
In particular, fuel oil and water are not separated even by temperature changes, so it can be used effectively for a long time regardless of whether it is a cold region or a tropical region. The product value is very high.
In addition, the method for producing an emulsion fuel according to the present invention can produce the above emulsion fuel easily and reliably, such as exhibiting stable combustion efficiency and reducing the generation amount of nitrogen oxides and dust. it can.

The present invention will be described using preferred examples, but is not limited thereto.
The emulsion fuel of the present invention is obtained by emulsifying fuel oil and functional water.
In the present invention, by adopting the above configuration, fuel oil and water can be uniformly emulsified without mixing a surfactant, an emulsifier, a stabilizer, and the like. A stable emulsion fuel in which oil and water are not separated can be obtained.

  Known fuel oils that can be used in the emulsion fuel of the present invention include fuel oils such as heavy oils, petroleum oils, kerosene, light oils, coal-based fuel oils, and bunker oils. Any fuel oil can be used alone or in combination.

  In particular, emulsion fuel can effectively use heavy oil, and heavy oil is solid or semi-fluid at room temperature. For example, petroleum asphalts and mixtures thereof, petroleum asphalt Examples include various processed products, intermediate products thereof, residues and mixtures thereof, high pour point oil or crude oil which does not flow at high temperature, petroleum-based tar pitch and mixtures thereof, bitumen (Olinocotar, Athabascabitum) and the like.

Moreover, as functional water used for the emulsion fuel of this invention, electronic water and harmonic reduction water correspond.
Functional water is water that has been subjected to physical treatment to give it some function. Specifically, water treated in an energy field such as an electric field, a magnetic field, far-infrared rays, sound waves, pressure, etc. For example, electronic water and harmonic reduced water are included.
Electronic water refers to water to which a harmonic voltage is applied and then irradiated with carbon light.
The harmonic reduced water refers to water in which carbon is dissolved by adding harmonics to water, irradiating with carbon light, and further applying energy by carbon electrode discharge.

Specifically, in preparing the functional water used in the present invention, first, a harmonic voltage is applied to industrial water, tap water, preferably pure water, and then irradiated with carbon light to generate electronic water (functional water A). ) Is prepared.
In producing the electronic water (functional water A), as shown in FIG. 1, the electronic water (functional water A) production apparatus 1 includes a harmonic voltage generator 2 and carbon electrodes 11 and 12. The tank 3 is composed of a carbon light irradiation tank 4 equipped with a carbon light generator 13.

  The harmonic voltage generator 2 is, for example, a transformer that uses a commercial 100V as an input voltage and generates a harmonic voltage in which a harmonic is superimposed on a commercial 60 Hz at an arbitrarily set high voltage in the range of 1 k to 50 kV. , And the generated harmonic voltage is applied to the water in the harmonic application tank 3 through the carbon electrode (carbon rod) 11.

As the harmonic voltage generator 2, for example, a transformer disclosed in Japanese Patent Laid-Open No. 2-100661 can be used. For example, as the harmonic voltage generator 2, a secondary transformer is used. A plurality of conductive ring cylinders can be externally fitted in a wire ring in a state of being insulated from each other and stacked in a linear shape and a cylindrical shape. When a current is passed from a primary wire ring to a secondary wire ring, A reaction occurs in the next wire ring and the current is distorted (trapezoidal waveform).
That is, when a current is passed from the primary wire ring to the secondary wire ring, the conductive ring cylinder generates an electromotive force according to the shape of the conductive ring cylinder by the magnetic flux in the iron core, and the magnetic flux generated by this electromotive force is generated by the secondary line. Displacement of the basic potential waveform (sine wave curve) of the ring (several protruding waveforms on the sine wave curve) generates a harmonic potential in the secondary wire ring and stabilizes it using the generated harmonic voltage Electronic water (functional water A) can be produced.

The harmonic voltage application tank 3 is supplied with a certain amount (for example, 1 t) of tap water from the pipe 14, holds the supplied water, and receives the harmonic voltage from the harmonic voltage generator 2. It is a tank for applying to water.
A carbon electrode (charcoal) 12 serving as a ground electrode is located at the bottom of the harmonic application tank 3, and a harmonic is provided between the carbon electrode 11 immersed near the water surface and the carbon electrode 12 located at the bottom of the harmonic application tank 2. A wave voltage is applied, during which lightning discharge occurs.

More specifically, in a preferred embodiment of the present invention, in order to produce the electronic water (functional water) by applying the harmonic voltage, the water in the harmonic voltage application tank 3 shown in FIG. A harmonic voltage of 19,500 volts (V) was applied to 1 t of water for 60 minutes to impart energy by a high electric field or lightning discharge.
As a result, the water clusters are decomposed and become smaller, the population of water molecules becomes smaller, preferably monomolecular water, and the molecular motion is activated.
By applying a high voltage, the molecular group of water becomes smaller, the amount of ring-shaped water increases, and in addition, electronic water (functional water A), which is structured active water that has high binding energy and is difficult to associate with others. ) Is obtained.

  The harmonic voltage application tank 3 is provided with a pipe 15 through which water irradiated with carbon light in the carbon light irradiation tank 4 is circulated and re-supplied as necessary. A pipe 16 for taking out the generated electronic water (functional water A) is also provided.

The carbon light irradiation tank 4 is a tank for holding the water supplied from the harmonic voltage application tank 3 via the pipe 17 and sufficiently irradiating the water with the carbon light from the carbon light generator 13. .
The carbon light generation device 13 is a device that emits light by applying a voltage to a light bulb using carbon as a filament, and irradiates the light in the carbon light irradiation tank 4 with water.
Water obtained by irradiating the water with carbon light is used in the present invention as electronic water (functional water A).

More specifically, for carbon light irradiation, the water from the harmonic voltage application tank 4 or the electronic water (when circulated) in which the water group has become small is irradiated with the carbon light from the carbon light generator 13. For example, in a preferred embodiment of the present invention, a light bulb 2400 watts (60 W × 40) emitting carbon light is used in units of 10 liters so that the carbon light is sufficiently irradiated to water. The carbon light was irradiated for about 1 hour.
By this irradiation, vibration energy having a spectrum similar to that of sunlight can be imparted to water by carbon light emitted from a light bulb having carbon as a filament.

This carbon light irradiation lowers the redox potential of water molecules, and in order to have a reducing action, it is important to increase the energy of water molecules and stabilize the presence of active hydrogen with strong reducing power. Become. Since atomic hydrogen has a strong reducing power, when metal ions are contained in water, the metal element ions are reduced to reduce the content of active hydrogen, so water is contained as much as possible. There is a need to reduce metal ions.
Therefore, it is necessary to make atomic carbon, which is a substance that binds weakly to atomic hydrogen and does not act on reducing power, exist in water. This is because the carbon spark discharge in the second step activates the atomic carbon. Dissolved in electronic water.

In the carbon light irradiation tank 4, in addition to the tube 18 for taking out the obtained electronic water (functional water A), water after carbon light irradiation is transferred from the carbon light irradiation tank 4 to the harmonic voltage application tank 3. The circulating electronic water (functional water A) obtained by circulating the water by repeating the above operation a plurality of times to circulate the water can be used.
Thus, the electronic water (functional water A) used for the emulsion fuel of the present invention is obtained.

Subsequently, harmonic reduced water (functional water B) used for the emulsion fuel of the present invention is prepared using the obtained electronic water (functional water A).
Specifically, the harmonic reduced water (functional water B) used in the present invention is prepared by irradiating the electronic water (functional water A) with carbon light and then irradiating the carbon electrode with sparks. Prepare water (functional water B).

In producing the harmonic reduced water (functional water B), as shown in FIG. 2, the harmonic reduced water (functional water B) production apparatus 5 includes the carbon light irradiation tank 6 and the carbon The spark discharge tank 7 is provided with a spark discharge generator using electrodes.
The carbon light irradiation tank 6 can be the same as the carbon light irradiation tank 4 used for producing the above-described electronic water (functional water A), and the electronic water (functional) produced by the apparatus of FIG. Water A) is introduced into the tank 6 through a pipe 19 and sufficiently irradiated with carbon light from the carbon light generator 20. The carbon light irradiation is the same as the carbon light irradiation tank in the carbon light irradiation tank of FIG.
The carbon light irradiation tank 6 also includes a tube 21 for circulating the carbon light irradiation water to the spark discharge tank 7.
Moreover, the water charged in the spark discharge in the spark discharge tank 7 is provided with a pipe 22 that is circulated and re-supplied as necessary. Further, harmonic reduced water (functional water B) when circulated is provided. A tube 24 for removal is also provided.

The water irradiated with the carbon light is introduced into the carbon light spark discharge tank 7 through the tube 21, and in the carbon light spark discharge tank 7, a spark in which one or more pairs of carbon electrodes are installed on the axis object. A discharge generator is provided. Further, a pipe communicating with the tank 1 is provided.
The tank 7 is supplied with water from the carbon light irradiation tank 6 to perform a carbon electrode spark discharge, whereby carbon is contained in the water. Thus, the water which performed spark discharge is utilized for this invention as harmonic reduced water (functional water B).

Further, the spark discharge tank 7 is charged with spark discharge from the spark discharge tank 7 to the carbon light irradiation tank 6 in addition to the tube 23 for taking out the obtained harmonic reduced water (functional water B). It is also possible to use the harmonic reduced water (functional water B) obtained by circulating the water by repeating the operation a plurality of times as necessary.
In this way, harmonic reduced water (functional water B) used for the emulsion fuel of the present invention is obtained.

More specifically, the carbon electrode spark discharge device 7 schematically shown in FIG. 2 performs a treatment for containing fine carbon particles in water.
When water molecules decompose at a high temperature, atomic hydrogen is generated. However, the atomic hydrogen has a strong reducing power and reduces metal ions to a hydrogen state. When it becomes hydrogen, it has no reducing power. In order to stabilize this atomic hydrogen in water, it is necessary to reduce the number of metal ions and to cause an atomic or molecular substance that can be bonded to atomic hydrogen to exist in water and be trapped by the substance. The substance is “particulate carbon” that exists in a hydrated state as a result of spark discharge.
This fine particle carbon can efficiently trap active hydrogen in an atomic state. In order to produce water containing a large amount of active hydrogen, it is desirable to use pure water that does not contain metal ions as raw water, so that active hydrogen is not consumed for the reduction of metal ions, and the affinity between hydrogen and carbon is used. The fine carbon particles existing in a hydrated state cause atomic hydrogen to exist in an active state.

When spark discharge is performed using a carbon electrode, carbon is vaporized and evaporated from the carbon electrode in an atomic state. This atomic carbon is recombined with the medium itself to form fine particles. If oxygen is present in the process, it burns to carbon dioxide. By preventing this combustion, the vaporized and evaporated carbon can be more present in the spark-discharge treated water.
A spark discharge generator used for carbon spark discharge is provided with a plurality of carbon electrodes, and two or more of the electrodes are axisymmetrically installed. It is important that the leakage current does not occur between the two rod-like carbon electrodes. The discharge interval is determined in consideration of the particle fall rate of vaporization / evaporation, the amount of water, the effect of light and heat of spark discharge, and the like. Usually, it is in the range of 10 to 50 centimeters, but in the case of a large capacity, a distance of 1 meter or more is maintained. Since the carbon electrode is a good conductor of heat, a heat resistant material is used for the insulating portion.
In the carbon electrode spark discharge, the carbon electrode is consumed, particularly in the air. In order to suppress the consumption, it is necessary to suppress an increase in the distance between the electrodes and keep it constant. The voltage between the electrodes of the spark discharge is 700 volts (V) or more when the distance between the electrodes is 2 to 30 mm. Thus, in the present invention, the spark discharge can be stably performed.
In a preferred embodiment of the present invention, the spark discharge was performed at 700 V for 5 minutes with respect to 1 t of water treated in the carbon light irradiation tank 6.

The water molecules are refined by the shock wave of the spark discharge. In the refinement of water molecules, the half width of NMR is 60 Hz, and the viscosity is higher than that of tap water. Also, the vapor pressure is low and it is difficult to evaporate. If the time required for the tap water to evaporate (constant temperature, constant humidity) is 10, the water treated by the carbon electrode spark discharge is 20.
Water treated by carbon electrode spark discharge is in an active state with high water molecule energy. This active water molecule forms a member ring. When water in the ring is bonded to atomic carbon, it has a molecular structure similar to that of sugar. Part of the atomic hydrogen generated by the decomposition of water molecules combines with oxygen and returns to water. It is considered that the remaining atomic active hydrogen is held in a carbon having a molecular structure close to that of a sugar formed by carbon existing in a hydrated state or bonded to a hydrated carbon atom. Chlorine contained in raw water is removed by carbon light irradiation and spark discharge.

The functional water used in the present invention contains about 1,000 ppb of active hydrogen.
Since the amount of dissolved hydrogen in tap water, which is raw water, is 5 ppb or less, it is considered that the particulate water decomposes into oxygen and hydrogen during the spark treatment process, and the active hydrogen is dissolved.
In the functional water used in the present invention, ultrafine carbon is present in a hydrated state, and this carbon binds active hydrogen.
In order to generate atomic carbon other than the atomic carbon that vaporizes and evaporates from the carbon electrode, a spark treatment is performed in a carbon-containing gas, for example, carbon dioxide, and the carbon dioxide is decomposed by the heat of the spark discharge. Thus, a method of generating atomic carbon is also effective.

More preferably, sodium chloride is added to the harmonic reduced water (functional water B) obtained in this manner to obtain functional water containing chlorine ions.
The sodium chloride can be blended in an amount of a saturated concentration or less with respect to 1 L of functional water, and the chlorine ion functions as a binder of fuel oil and functional water contained in the obtained emulsion. A better emulsified state can be maintained.

The emulsion fuel of the present invention can be obtained by stirring and mixing the functional water and fuel oil thus obtained.
Examples of the emulsion fuel of the present invention using A heavy oil as the fuel oil will be described in detail below.
By further stirring and mixing functional water A into an emulsion obtained by stirring and mixing functional water B (including sodium chloride added if necessary) that is harmonic reduced water and A heavy oil. To produce emulsion fuel.
In the first step of mixing and stirring the harmonic reduced water (functional water B) and the A heavy oil, the harmonic reduced water (functional water B) and the A heavy oil are, for example, in a mass ratio. It is blended at a ratio of 9: 1 to 3: 7, and is stirred for 3 minutes at, for example, 4000 rpm to produce an amount per drum can until a sufficiently emulsified state is uniformly obtained. Manufactured. This blending ratio can be appropriately determined according to the desired fuel efficiency, combustion calories, and ignition temperature.
Such stirring conditions are not particularly limited as long as a good emulsified state can be formed, and can be appropriately determined according to the fuel oil to be used and the blending ratio of the functional water and the fuel oil.

Next, the emulsion obtained in the first step and the electronic water (functional water A) are mixed and stirred to emulsify, and in the second step to obtain the emulsion fuel of the present invention, the first step emulsion, the electronic water, The blending ratio is 9: 1 to 5: 5 by mass ratio, and, for example, by stirring for 1 minute at 4000 rpm to produce an amount per drum can until a sufficient emulsified state is obtained, The emulsion fuel of the present invention can be obtained. Such a blending ratio can also be appropriately determined according to the desired fuel efficiency, combustion calories, and ignition temperature.
Such stirring conditions are not particularly limited as long as a good emulsified state can be formed, and can be appropriately determined according to the fuel oil to be used and the blending ratio of the functional water and the fuel oil.

  Known mixing agitators can be used. For example, a high shear rate agitator such as a line mixer, a yaba turbine blade, a full margin blade, a high shear turbine mixer, or a homogenizer is effectively used. Can be used.

In a preferred embodiment, in the first step of mixing and stirring the harmonic reduced water (functional water B) obtained as described in the above preferred embodiment and the A heavy oil, harmonic reduced water (functional water) is used. The blending ratio of B) and A heavy oil may be 1: 5 in mass ratio, and may be stirred and mixed until a good emulsified state is uniformly obtained. For example, the stirring conditions can produce the amount per drum can. At that time, the mixture was stirred for 3 minutes at 4000 rpm, thereby obtaining a first step emulsion in a sufficiently uniform emulsified state.
However, the harmonic reduced water (functional water B) used was one in which a saturated amount of sodium chloride was dissolved.
Next, the first step emulsion and the electronic water in the second step in which the first step emulsion obtained in the first step and the electronic water (functional water A) obtained as described in the preferred embodiment are mixed and stirred. The mixing ratio with the functional water A) is 6: 4 by mass ratio, and stirring and mixing may be performed until a good emulsified state is uniformly obtained. For example, the stirring condition is 4000 rpm for producing an amount per drum. In this way, a milky white emulsion fuel according to an example of the present invention was obtained, which was sufficiently mixed in an emulsified state.

  Thus, the emulsion fuel of the present invention is an emulsion fuel that maintains a good emulsified state in which fuel oil and water do not separate without adding and mixing any emulsifier, surfactant, stabilizer, etc. Emulsion fuel with excellent long-term storage.

Further, as a comparative example, A heavy oil, tap water, and sodium alkyl ether sulfate ester as a surfactant were blended in a mass ratio of 70: 25: 5 and mixed by stirring. In order to blend these raw materials, first, the A heavy oil and the surfactant were stirred and mixed, and water was added thereto, followed by stirring and mixing until a good emulsified state was uniformly obtained. For example, it can be stirred for 12 minutes at 8000 rpm. As a result, a milky white emulsion fuel having a sufficient and uniform emulsified state was obtained.
At the time of manufacture, the emulsion fuel of the above example and the emulsion fuel of the comparative example were both emulsion liquids in a milky white emulsion state that was visually uniform.

Changes over time (three months, half a year, one year later) after the emulsion fuel of the present invention of the preferred embodiment was stored at room temperature and normal pressure (25 ° C., atmospheric pressure), and the above About the emulsion state (separated state) due to the change over time (after one week) after the emulsion fuel mixed with the surfactant of the comparative example is stored at room temperature (25 ° C., atmospheric pressure). Tested.
The results are shown in FIGS.

  As described above, the emulsion fuel of the example of the present invention is stored in the same condition as that of the conventional emulsion fuel containing the surfactant. Has been separated from oil and water at the end of 3 months and 6 months, and oil and water are not separated at all. It can be seen that even after passing, it is hardly separated and shows high stability.

  The emulsion fuel of the present invention can be used for railroad vehicle fuel, marine fuel, vehicle fuel such as automobile fuel including buses and trucks, petroleum thermal power plant, industrial generator ( It can be effectively used for boilers of normal and emergency) and various sizes.

The schematic of the apparatus for manufacturing the electronic water used for the emulsion fuel of this invention. The schematic of the apparatus for manufacturing the harmonic reduction water used for the emulsion fuel of this invention. The photograph figure which shows the state at the time of storing the emulsion fuel of an example of this invention for 3 months. The photograph figure which shows the state at the time of storing the emulsion fuel of an example of this invention for 6 months. The photograph figure which shows the state at the time of storing the emulsion fuel of an example of this invention for one year. The photograph figure which shows the state at the time of storing the emulsion fuel containing surfactant of a conventional example for one week.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Electronic water manufacturing apparatus 2 ... Harmonic voltage generator 3 ... Harmonic application tank 4, 6 ... Carbon light irradiation tank 5 ... Harmonic reduced water manufacturing apparatus 7 ... Spark Discharge tanks 11, 12 ... carbon electrodes 13, 20 ... carbon light generators 14, 15, 16, 17, 18, 19, 21, 22, 23 ... tubes

Claims (5)

An emulsion fuel comprising fuel oil and functional water. 2. The emulsion fuel according to claim 1, wherein the functional water is electronic water and harmonic reduced water. The emulsion fuel according to claim 1 or 2, further comprising sodium chloride. It comprises a first step of stirring and mixing fuel oil and harmonic reduced water to obtain an emulsion, and then a second step of mixing and stirring the emulsion obtained in the one step and electronic water, Method for producing emulsion fuel. 5. The method for producing an emulsion fuel according to claim 4, wherein sodium chloride is further dissolved in the harmonic reduced water in advance.

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