JP5442811B2 - Fuel supply device - Google Patents

Description

  The present invention is a fuel supply device for supplying an emulsion fuel obtained by mixing flammable oil such as heavy oil or kerosene and water to a combustion device such as a boiler or burner, and burning the fuel. It is related with the fuel supply apparatus which improves the combustion efficiency at the time of making it reduce, and reduces the consumption of the combustible oil to be used.

  Conventionally, an emulsion fuel obtained by mixing flammable oil such as heavy oil and water is mixed with flammable oil and water, and is further mixed with bubbles to pass through a predetermined mixer and pass through a predetermined mixing element of the mixer. Through the unevenness and grooves, expansion and compression are repeated to produce a mixture of fine bubbles (see, for example, Patent Document 1).

  Other emulsion fuels are manufactured by adding a small amount of an emulsifier to water and combustible oil and repeatedly passing it through a narrow orifice (see, for example, Patent Document 2). .

Japanese Patent No. 4533969 JP 2008-81470 A

  However, in the conventional manufacturing described in Patent Document 1, the droplets of combustible oil and water are simply refined, and there is a problem in further improving the combustion efficiency.

  Moreover, when using the emulsifier of patent document 2, an unnecessary oxide generate | occur | produces with the component of an emulsifier, and there exists a possibility of causing the fall of an environment.

  The present invention solves the above-described problems, and an object thereof is to provide a fuel supply device that is environmentally friendly, improves combustion efficiency, and can be burned by a combustion device.

<Explanation of Claim 1>
A fuel supply device according to the present invention is a fuel supply device for supplying an emulsion fuel obtained by mixing flammable oil and water to a combustion device for combustion.
A metering device that measures the volume ratio of the water to be mixed with the combustible oil within a range of 20 to 30%;
An ozone dissolving device for dissolving ozone at a ratio of 1.0 to 5.0 mg / L with respect to water;
A mixing device for producing the emulsion fuel by refining the droplets of the water and the combustible oil in a mixture of the water and the combustible oil measured by dissolving ozone; and
It is configured to include a,
The mixing device is
A batch-type mixing tank that contains the mixed solution of the water and the combustible oil in which the ozone measured by the metering device is dissolved;
A circulation mechanism for sucking the mixed liquid in the mixing tank from the mixing tank and returning it to the mixing tank;
With
The circulation mechanism is
A gear pump;
An opening on the lower side of the mixing tank, and a suction flow path for the mixed liquid connected to the suction side of the gear pump;
An opening on the upper side of the mixing tank, and a discharge passage for the mixed liquid connected to a discharge side of the gear pump;
An injection nozzle that is disposed at a tip of the discharge flow path and injects the mixed liquid discharged from the gear pump into the mixing tank;
Configured with
Between the combustion device and the mixing device, a buffer device that stores the emulsion fuel from the mixing device and can be supplied to the combustion device is disposed,
The buffer device is
A buffer tank for storing the emulsion fuel from the mixing device;
A flow path for allowing the emulsion fuel stored in the buffer tank to flow so as to be stirred;
A supply flow path that branches off from the flow flow path, is capable of supplying the emulsion fuel to the combustion device, and returns excess emulsion fuel from the combustion device side to the buffer tank side;
An ignition channel that communicates with the supply channel and is capable of supplying the combustible oil to the combustion device;
Characterized in that it is configured with a.

  In the fuel supply device according to the present invention, the metering device forms a mixed liquid in which the ratio of the volume of water to be mixed with the combustible oil is measured within a range of 20 to 30%, and the mixing is performed. The liquid is in a state in which ozone is dissolved at a ratio of 1.0 to 5.0 mg / L with respect to water by an ozone dissolving device. In this state, the mixing device refines the droplets of water and combustible oil in the mixed solution in which ozone has been dissolved to produce an emulsion fuel.

  That is, before attempting to refine water or oil droplets with a mixing device when producing an emulsion fuel that is a mixture of water and combustible oil, the water and the combustible oil are Compared with the case where water and flammable oil droplets are simply made finer, the ozone having a strong oxidizing action is dissolved in the mixture liquid. Combustion efficiency can be improved by about 10% or more.

  Further, since the emulsion fuel is produced without using an emulsifier, the emulsion fuel can be combusted by the combustion device without generating an unnecessary oxide and suppressing the influence on the environment.

  Ozone can reduce the molecular weight of flammable oil due to its oxidizing action, making it difficult for oil components surrounding the water droplets to be separated from water. Medium oil (W / O) emulsions can be produced.

  Furthermore, after ozone is dissolved in water, about half of it is converted into OH radicals that are rich in reactivity, and hydrogen bonds, double bonds, etc. can be fragmented, and water particles are refined and oil particles are refined. The effect is also exerted.

  As a result, the state of good emulsion fuel combustion, that is, the finely divided low-boiling water particles evaporate and evaporate, and the oil surrounding the water particles scatters to increase the area in contact with oxygen. As a result, the particles become smaller in size, and local incomplete combustion is reduced. Further, in the combustion apparatus, the finely divided water particles are easily gasified while suppressing the loss of latent heat, and wasteful heat energy consumption is suppressed. Therefore, a high amount of heat can be generated with a small amount of combustible oil, and fuel efficiency can be increased. Furthermore, since it is easy to become complete combustion, generation | occurrence | production of soot can be suppressed and generation | occurrence | production of nitrogen oxide can also be suppressed since the remarkable raise of combustion temperature can be suppressed by the influence of containing water.

  Therefore, in the fuel supply apparatus according to the present invention, the produced emulsion fuel can be burned by the combustion apparatus while being friendly to the environment and improving the combustion efficiency.

  In addition, if the volume ratio of water to combustible oil is less than 20%, it is difficult to obtain a uniform water droplet oil medium (W / O) emulsion, and good combustion efficiency cannot be obtained. The ratio is increased, which lowers the combustion temperature, hinders complete combustion, or accumulates water in the combustion device, which causes rust, which is not desirable.

  In addition, the amount of ozone dissolved in water (added amount) is less significant if it is less than 1.0 mg / L, and in the case where an amount exceeding 5.0 mg / L is dissolved, the device is more effective than the improvement in effect. This is not desirable because the cost of the fuel is large, the cost performance is poor, and the effect of lowering the fuel cost as the combustion efficiency is improved is hindered.

In the present invention , the circulation mechanism connected to the mixing tank includes a gear pump, and when sucking and discharging by the gear pump, the gear pump gear is finely squeezed so that water and flammable oil droplets are sheared. If it is further circulated, it will be further miniaturized.

  Furthermore, when the liquid is ejected back to the mixing tank, the liquid mixture injected from the injection nozzle collides with the liquid surface, so the liquid mixture on the mixing tank side or the liquid mixture on the side injected from the injection nozzle However, due to the collision, water and flammable oil droplets in the mixed liquid are further refined.

As a result, even with a simple circulation mechanism that simply sucks and returns the mixed liquid in the mixing tank, water and flammable oil droplets can be refined smoothly and efficiently, and the oxidizing action of ozone. As a result, the droplets surrounded by the oil without being separated from the periphery of the water particles are uniformly refined, and a more suitable emulsion fuel can be produced with the above configuration.
Further, in the present invention, the buffer device causes the emulsion fuel in the buffer tank to flow up to the branch point of the supply flow channel in the flow channel, and then returns to the buffer tank, while the combustion device is in operation. If so, it flows from the branch point through the supply flow path to the combustion device. If the combustion device is not in operation, the buffer device passes through the branch point and causes the emulsion fuel in the buffer tank to flow to be stirred.
As a result, the buffer device can be made to flow so as to stir the emulsion fuel, so that it can be prepared as a fine droplet state without separating water and combustible oil. The combustion apparatus can be operated with good combustion efficiency.
Further, in the above configuration, even if the emulsion fuel directed to the combustion device becomes in a surplus state, it can be returned to the buffer tank via the supply flow path, and can be used efficiently.
In addition, the supply flow path is connected to an ignition flow path that can supply flammable oil to the combustion device. If ignition is not performed smoothly only with emulsion fuel, the ignition flow path is used. Thus, the combustible oil can be supplied to the combustion device. Therefore, if the fuel is first ignited by the combustible oil, and then the ignition channel is closed and the emulsion fuel is supplied from the supply channel to the combustion device, the emulsion can be smoothly supplied. It can be shifted to the combustion of fuel.

<Explanation of Claim 2 >
In the fuel supply device according to the present invention,
The gear pump has a discharge pressure set within a range of 0.1 to 0.3 Mpa,
It is desirable that the spray nozzle be disposed with an opening diameter in the range of 0.05 to 2 mm.

  In such a configuration, even when a general-purpose gear pump is used, the mixture liquid is jetted from the jet nozzle with a small opening diameter, and in combination with the shearing of water and flammable oil droplets by the gear pump itself, Water droplets and flammable oil droplets can be refined to produce a suitable emulsion fuel.

  In addition, when the opening diameter of the injection nozzle exceeds 2 mm, it is difficult to inject the mixed liquid M at a flow rate that can be miniaturized, and a large motor or the like that consumes a large amount of power is used. And the initial cost is not preferable.

  Moreover, if the opening diameter of the injection nozzle is less than 0.05 mm, clogging of foreign matters is likely to occur, which is not preferable.

<Explanation of Claim 3 >
In the fuel supply device according to the present invention, it is desirable that the metering device measures the ratio of the volume of the water to be mixed with the combustible oil within a range of 22 to 23%.

  In such a configuration, the fuel efficiency can be improved by about 25 to 28% or more.

It is the schematic of the fuel supply apparatus of embodiment in this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, a fuel supply device 1 of the embodiment includes a water tank 2 that stores water such as tap water, and ozone as an ozone dissolving device. It comprises a water production device 4, a heavy oil tank 8 storing heavy oil (A heavy oil) H as combustible oil, a metering device 12, a mixing device 15, a buffer device 30, and a burner 42 as a combustion device. Yes.

  The ozone water production apparatus 4 as an ozone dissolving apparatus flows water W from a water tank 2 through a pipe 3 and blows bubbles of ozone O into the water W or interposes a porous partition wall with water W And ozone O are flowed, or water W and ozone O are flowed so as to face each other from above and below, and ozone O is dissolved in water W to manufacture. In this ozone water production apparatus 4, the ratio of ozone O to water W is within a range of 1.0 to 5.0 mg / L, and in the case of the embodiment, the ratio is 2.0 ± 0.5 mg / L. , Dissolved.

  The ozone water production device 4 and the heavy oil tank 8 are connected to the measuring device 12 via pipes 5 and 9 provided with on-off valves 6 and 10, respectively. The weighing device 12 measures the volume ratio of the water W to be mixed with the heavy oil H as combustible oil within a range of 20 to 30%, in the embodiment, 22 to 23%, and the mixing device 15 It flows down into the mixing tank 18.

  The metering device 12 causes the heavy oil H and the water W to flow into predetermined metering tanks each having a built-in float, and when the volume of the corresponding ratio is reached, the on-off valves 6 and 10 are closed. And it is made to flow down in the mixing tank 18.

  The mixing device 15 refines the droplets of the water W and the heavy oil H in the mixed liquid M of the water W and the heavy oil H in which the ozone O is dissolved, and is a batch type mixing tank 18 and a mixing tank 18. And a circulation mechanism 20 that sucks the mixed liquid M from the mixing tank 18 and returns the mixed liquid M to the mixing tank 18.

  The mixing tank 18 is configured to have a capacity capable of producing 22.5 L (liter) of emulsion fuel E by refining droplets of the water W and heavy oil H of the mixed liquid M per cycle.

  The circulation mechanism 20 includes a gear pump 23, a suction channel 21, a discharge channel 22, and an injection nozzle 24.

  In the case of the embodiment, the gear pump 23 is an external gear pump, and is configured to rotationally drive a pair of meshing gears in the pump main body 23a using the electric motor 23b as a drive source. The gear pump 23 has a discharge pressure of 0.1 to 0.3 Mpa and a discharge amount of 37 L / min.

  The suction channel 21 opens to the lower side 18 b of the mixing tank 18 and is connected to the suction side of the gear pump 23, and the discharge channel 22 opens to the upper side 18 a of the mixing tank 18 and discharges from the gear pump 23. It is connected to.

  The injection nozzle 24 is arranged at the tip of the discharge flow path 22 and jets the mixed liquid M discharged from the gear pump 23 downward from above so as to be orthogonal to the liquid surface in the mixing tank 18 from above. It is said. The injection nozzle 24 is disposed with an opening diameter in the range of 0.05 to 2 mm. In the case of the embodiment, the opening diameter of the injection nozzle 24 is 1.0 mm.

  In the case of the embodiment, when the mixing device 15 is operated, 22.5 L of emulsion fuel E is manufactured with one cycle being 6 minutes. That is, it takes one minute for the weighing device 12 to measure the heavy oil H and the water W at a predetermined ratio, and then the mixed liquid M in the mixing tank 18 is circulated by the circulation mechanism 20 by the operation of the gear pump 23. Thus, it takes 5 minutes to produce the emulsion fuel E.

  In addition, even if it circulates for 5 minutes or more, for example, even if it circulates for 8 minutes, it does not lead to improvement of fuel efficiency, and if it is less than 5 minutes, there is little effect of improving fuel efficiency. The circulation of the most efficiently could improve the combustion efficiency.

  In other words, the discharge amount of the gear pump 23 is 37 L / min, the flow rate is 37 × 5 = 185 L in 5 minutes, and the volume of the mixing tank 18 is 22.5 L, 185 ÷ 22.5 = In this apparatus 1, the mixed liquid M in the mixing tank 18 is circulated by the circulation mechanism 20 including the gear pump 23 and the injection nozzle 24 about 8 to 9 times.

  The buffer device 30 is arranged between a burner 42 as a combustion device and the mixing device 15, and is configured to store the emulsion fuel E from the mixing device 15 and supply it to the burner 42. .

  The buffer device 30 includes a buffer tank 31, a flow channel 32, a supply channel 36, and an ignition channel 40.

  The buffer tank 31 is connected to the mixing tank 18 of the mixing device 15 by a transfer line 25 provided with the opening / closing valve 26, and the emulsion fuel E in the mixing tank 18 produced by the opening / closing operation of the opening / closing valve 26 is supplied to the buffer tank 31. It is configured to be transported and stored.

  In the case of the embodiment, the buffer tank 31 has a capacity of 48 L so that the emulsion fuel E for two cycles manufactured by the mixing device 15 can be stored.

  In order to prevent separation of oil and water, the flow passage 32 is a flow for the emulsion fuel E stored in the buffer tank 31 to be agitated and is fed by a feed pump 33 such as a gear pump. The emulsion fuel E is drawn from the lower part 31 b side of the buffer tank 31, and then flows down from the upper part 31 a of the buffer tank 31 to return to the buffer tank 31.

  The supply flow path 36 is branched from the flow flow path 32 so that the emulsion fuel E can be supplied to the burner 42, and the surplus emulsion fuel E is returned from the burner 42 side to the buffer tank 31 side. Yes. A switching valve 34 is disposed at a branch point 35 with the flow channel 32.

  The ignition channel 40 is connected to the upstream side of the burner 42 in the supply channel 36 so that the heavy oil H can be supplied to the burner 42.

  In the fuel supply device 1 of the embodiment, when a start switch (not shown) is turned ON, the opening / closing valves 6 and 10, the metering device 12, and the electric motor 23b of the gear pump 23 are appropriately operated by a control means such as a predetermined sequencer. As described above, the mixing device 15 produces 22.5 L of the emulsion fuel E in a driving time of 6 minutes for one cycle. When the emulsion fuel E for one cycle is manufactured, the on-off valve 26 is opened by the control means described above, and the emulsion fuel E in the mixing tank 18 passes through the transfer pipe 25, It is transferred into the buffer tank 31, and the feed pump 33 is operated to circulate the flow passage 32 so that the emulsion fuel E in the buffer tank 31 is agitated.

  When the burner 42 is used, the control means described above operates the switching valve 34 to supply the emulsion fuel E from the flow passage 32 through the supply passage 36 to the burner 42 and burn it. It will be.

  If the emulsion fuel E is difficult to ignite when the burner 42 is ignited, a predetermined on-off valve of the ignition flow path 40 is opened to supply heavy oil H from the heavy oil tank 8 to the burner 42. The burner 42 may be ignited and the emulsion fuel E may be burned.

  In addition, when the burner 42 is used, for example, when the volume of the emulsion fuel E in the buffer tank 31 is less than half, the control means described above automatically operates the mixing device 15 to sequentially mix. Control is performed so that the emulsion fuel E produced by the apparatus 15 is transferred to the buffer tank 31.

  And in the fuel supply apparatus 1 of embodiment, the ratio of the volume of the water W mixed with the heavy oil H as combustible oil is measured by the measuring device 12 to 22-23% within the range of 20-30%. The mixed liquid M is formed, and the mixed liquid M is in the range of 1.0 to 5.0 mg / L of ozone O with respect to the water W by the ozone water production apparatus 4 as an ozone dissolving apparatus. It is set as the state melt | dissolved in the ratio of 2.0 +/- 0.5mg / L. In this state, the mixing device 15 refines the water and oil droplets in the mixed liquid M in which the ozone O has been dissolved, and the emulsion fuel E is manufactured.

  That is, before the water droplets of the water and oil are refined by the mixing device 15 when the emulsion fuel E formed by mixing the water W and the heavy oil H is produced, the water W is previously obtained by the ozone water production device 4. Compared with the case where water and oil droplets in the liquid mixture of water and heavy oil are simply refined, ozone O having a strong oxidizing action is dissolved in the liquid mixture M of oil and heavy oil H. Combustion efficiency can be improved by about 5 to 10% or more.

  In addition, since the emulsion fuel E is manufactured without using an emulsifier, the emulsion fuel E can be burned by the burner 42 without generating unnecessary oxides and suppressing the influence on the environment. it can.

  In addition, the ozone O can reduce the molecular weight of the heavy oil H due to its oxidizing action, and the oil component surrounding the water droplet is difficult to be separated from the water, and is uniform with the miniaturization of the droplet by the mixing device 15. Water droplet oil medium (W / O) emulsions can be produced.

  Furthermore, ozone O, after being dissolved in water W, is converted into OH radicals, which are about half of which are highly reactive, and hydrogen bonds and double bonds can be fragmented. It also demonstrates the effect of achieving this.

  As a result, a good combustion state of the emulsion fuel E, that is, the finely divided low-boiling water particles are vaporized and evaporated, and the oil surrounding the water particles is scattered and the area in contact with oxygen is reduced. Localized incomplete combustion is reduced because the particle size becomes smaller and larger. Further, in the burner 42 as a combustion device, the finely divided particulate water W is easily gasified while suppressing the loss of latent heat, and wasteful heat energy consumption is suppressed. Therefore, a high amount of heat can be generated with a small amount of combustible oil, and fuel efficiency can be increased. Furthermore, since it is easy to become complete combustion, generation | occurrence | production of soot can be suppressed and generation | occurrence | production of nitrogen oxide can also be suppressed since the remarkable raise of combustion temperature can be suppressed by the influence of containing water.

  Therefore, in the fuel supply apparatus 1 of the embodiment, the produced emulsion fuel E can be burned by the burner 42 while being friendly to the environment and improving the combustion efficiency.

  If the volume ratio of the water W to the heavy oil H is less than 20%, it is difficult to obtain a uniform water droplet oil medium (W / O) emulsion, and good combustion efficiency cannot be obtained. This ratio is not desirable because the combustion ratio is lowered and the combustion temperature is lowered to inhibit complete combustion or the water W accumulates in the burner 42 to cause rust.

  In addition, the amount of ozone O dissolved in water W (addition amount) is less significant if it is less than 1.0 mg / L, and in the case where an amount exceeding 5.0 mg / L is dissolved, the effect is improved. This is not desirable because the cost of the apparatus is great, the cost performance is bad, and the effect of lowering the fuel cost with the improvement of the combustion efficiency is hindered.

  Furthermore, in the fuel supply device 1 of the embodiment, the mixing device 15 includes a batch type mixing tank 18 that contains a mixed solution M of water W and heavy oil H in which ozone O measured by the measuring device 12 is dissolved. And a circulating mechanism 20 that sucks the mixed liquid M in the mixing tank 18 from the mixing tank 18 and returns it to the mixing tank 18. Further, the circulation mechanism 20 opens to the gear pump 23 and the lower part 18 b side of the mixing tank 18, and to the suction channel 21 of the mixed liquid M connected to the suction side of the gear pump 23, and to the upper part 18 a side of the mixing tank 18. The mixture M is opened and connected to the discharge side of the gear pump 23, and the mixture M disposed at the tip of the discharge channel 22 and discharged from the gear pump 23 is injected into the mixing tank 18. And an injection nozzle 24.

  Therefore, in the fuel supply device 1 of the embodiment, the circulation mechanism 20 connected to the mixing tank 18 includes the gear pump 23. When the gear pump 23 sucks and discharges the water W and the heavy oil H, The droplets are refined so as to be sheared and further refined if they are circulated.

  Furthermore, since the liquid mixture M injected from the injection nozzle 24 collides with the liquid surface when discharged back to the mixing tank 18, the liquid mixture M on the mixing tank 18 side or the injection nozzle 24 injects the liquid. In the mixed liquid M on the side to be subjected to the collision, the droplets of water W and heavy oil H in the mixed liquid M are further refined.

  As a result, even if the configuration of the simple circulation mechanism 20 in which the mixed liquid M in the mixing tank 18 is simply sucked back, the droplets of the water W and the heavy oil H can be refined smoothly and efficiently. Due to the oxidizing action of O, the droplets surrounded by the oil without separating the periphery of the water particles are uniformly refined, and with the above configuration, a more suitable emulsion fuel E can be produced. .

  Furthermore, in the fuel supply device 1 of the embodiment, the gear pump 23 sets the discharge pressure within the range of 0.1 to 0.3 Mpa, and the injection nozzle 24 has the opening diameter of 1 within the range of 0.05 to 2 mm. 0 mm.

  In such a configuration, even when a general-purpose gear pump 23 is used, the mixture M is jetted from the jet nozzle 24 having a small opening diameter, and this is combined with the shearing of water W and heavy oil H droplets by the gear pump 23 itself. Thus, the droplets of water W and heavy oil H can be smoothly refined, and a suitable emulsion fuel E can be produced.

  In addition, when the opening diameter of the injection nozzle 24 exceeds 2 mm, it is difficult to inject the liquid mixture M at a flow rate that can be miniaturized, and a large motor or the like that consumes a large amount of power is used. This is not preferable because it increases the cost and the initial cost.

  Moreover, if the opening diameter of the injection nozzle 24 is less than 0.05 mm, clogging of foreign matters is likely to occur, which is not preferable.

  Furthermore, in the fuel supply device of the embodiment, the buffer device 30 that stores the emulsion fuel E from the mixing device 15 and can supply it to the burner 42 is disposed between the burner 42 and the mixing device 15. . The buffer device 30 includes a buffer tank 31 that stores the emulsion fuel E from the mixing device 15, a flow channel 32 that flows the emulsion fuel E stored in the buffer tank 31 so as to stir, and a flow channel 32. And the supply of the emulsion fuel E to the burner 42, and the excess flow of the emulsion fuel E from the burner 42 to the buffer tank 31 is communicated with the supply flow path 36. And an ignition flow path 40 capable of supplying heavy oil H to 42.

  Therefore, in the fuel supply device 1 according to the embodiment, the buffer device 30 operates the feed pump 33 to feed the emulsion fuel E in the buffer tank 31 to the branch point 35 of the supply flow channel 36 in the flow flow channel 32. If the burner 42 is in operation at that time, it flows to the burner 42 via the supply flow path 36 by operating the switching valve 34 at the branch point 35. If the burner 42 is not in operation, the buffer device 30 operates the switching valve 34 to pass the branch point 35 to flow the emulsion fuel E in the buffer tank 31 so as to stir. Become.

  As a result, the buffer device 30 can be made to flow so as to stir the emulsion fuel E. Therefore, the water droplets W and the heavy oil H are not separated from each other, and the liquid droplets 30 are prepared as fine droplets. The burner 42 can be operated with good combustion efficiency.

  Further, in the above configuration, even if the emulsion fuel E heading to the burner 42 becomes in a surplus state, it can be returned to the buffer tank 31 via the supply flow path 36 and can be used efficiently.

  Further, an ignition flow path 40 capable of supplying heavy oil H to the burner 42 is connected to the supply flow path 36, and when ignition is not performed smoothly only by the emulsion fuel E, the ignition flow path 40 Since the heavy oil H can be supplied to the burner 42 using the fuel oil, first, the fuel oil H is ignited by the heavy oil H, and then the ignition flow path 40 is closed and the emulsion fuel E is supplied from the supply flow path 36 to the burner 42 It is possible to smoothly shift to the combustion of the emulsion fuel E.

  Furthermore, in the fuel supply apparatus 1 of the embodiment, the mixed liquid M is formed such that the volume ratio of the water W to be mixed with the heavy oil H is within a range of 22 to 23%. Therefore, in such a configuration, the fuel efficiency can be improved by about 25 to 28% or more.

(1) Test Example For the burner used for drying from okara, the following I. II. III. We examined the consumption of heavy oil using three types of fuel.

I. Use only heavy oil as fuel,
II. An emulsion fuel produced by using the fuel supply device 1 of the embodiment in which water that does not dissolve ozone is mixed with fuel in a volume ratio of 25% with respect to heavy oil is used.
III. Emulsion fuel produced using the fuel supply device 1 of the embodiment by mixing water in which 2.0 ± 0.5 mg / L of ozone is dissolved at a volume ratio of 25% with respect to heavy oil. use.

When using the above three types of fuel, the amount of heavy oil used per unit time is
I. Then, it was 33.06 L / hour,
II. Then, it becomes use of 29.76L / hour,
(1-29.75 ÷ 33.06) × 100 = 10.0%
Reduction of heavy oil, and
III. Then, it becomes use of 24.53L / hour,
(1-24.53 ÷ 33.06) × 100 = 25.8%
In the fuel supply device 1 of the embodiment, the fuel efficiency can be improved, and the consumption of heavy oil to be used can be greatly reduced.

(2) Test example Furthermore, it is used for the fuel of the burner for the boiler for raising the temperature in the greenhouse for growing cherry tomatoes, and at the same time of the previous year (February 10 to March 15), And compared with the amount of heavy oil used on the day when the outside air temperature became the same.

  As the fuel to be used, water in which 2.0 ± 0.5 mg / L of ozone is dissolved is mixed at a volume ratio of 22 to 23% (about 22.5%) with respect to heavy oil. The emulsion fuel produced using the fuel supply device 1 was used.

  As a result, it was a significant reduction of 48.03% compared to the previous year when only fuel oil was used. However, since the emulsion fuel E manufactured in the embodiment evaporates and evaporates the water particles during combustion, and at that time, the oil surrounding the water particles is scattered, the fuel supply device 1 of the embodiment. It is estimated that there are some factors that improved the heat exchange efficiency of the boiler by removing carbon etc. accumulated in the boiler until the previous fiscal year. When using a mixed solution in which water dissolved in water is mixed at a volume ratio of 22-23% with respect to heavy oil, although it is difficult to say that it stably exceeds 40%, it is substantially about 25-28%. It seems that the above reduction can be secured.

  Therefore, the volume ratio of mixing ozone-dissolved water with heavy oil is preferably 20 to 30%, and further considering test examples (1) and (2), 20 to 25% is preferable. More desirably, it can be determined that 22 to 23% is preferable.

  The combustible oil used in the fuel supply apparatus of the present invention is not limited to mineral oil such as heavy oil, light oil, and kerosene, and vegetable oil may be used.

DESCRIPTION OF SYMBOLS 1 ... Fuel supply apparatus, 4 ... (ozone dissolution apparatus) Ozone water production apparatus, 12 ... Metering apparatus, 15 ... Mixing apparatus, 18 ... Mixing tank, 18a ... Upper part, 18b ... Lower part, 20 ... Circulation mechanism, 21 ... Suction flow , 22 ... discharge passage, 23 ... gear pump, 24 ... injection nozzle, 30 ... buffer device, 31 ... buffer tank, 32 ... flow passage, 36 ... supply passage, 40 ... ignition passage, 42 ... (combustion) Equipment) burner,
W ... water, O ... ozone, H ... (combustible oil) heavy oil, M ... mixed liquid, E ... emulsion fuel.

Claims (3)

A fuel supply device for supplying and burning an emulsion fuel obtained by mixing flammable oil and water to a combustion device,
A metering device that measures the volume ratio of the water to be mixed with the combustible oil within a range of 20 to 30%;
An ozone dissolving device for dissolving ozone at a ratio of 1.0 to 5.0 mg / L with respect to water;
A mixing device for producing the emulsion fuel by refining the droplets of the water and the combustible oil in a mixture of the water and the combustible oil measured by dissolving ozone; and
It is configured to include a,
The mixing device is
A batch-type mixing tank that contains the mixed solution of the water and the combustible oil in which the ozone measured by the metering device is dissolved;
A circulation mechanism for sucking the mixed liquid in the mixing tank from the mixing tank and returning it to the mixing tank;
With
The circulation mechanism is
A gear pump;
An opening on the lower side of the mixing tank, and a suction flow path for the mixed liquid connected to the suction side of the gear pump;
An opening on the upper side of the mixing tank, and a discharge passage for the mixed liquid connected to a discharge side of the gear pump;
An injection nozzle that is disposed at a tip of the discharge flow path and injects the mixed liquid discharged from the gear pump into the mixing tank;
Configured with
Between the combustion device and the mixing device, a buffer device that stores the emulsion fuel from the mixing device and can be supplied to the combustion device is disposed,
The buffer device is
A buffer tank for storing the emulsion fuel from the mixing device;
A flow path for allowing the emulsion fuel stored in the buffer tank to flow so as to be stirred;
A supply flow path that branches off from the flow flow path, is capable of supplying the emulsion fuel to the combustion device, and returns excess emulsion fuel from the combustion device side to the buffer tank side;
An ignition channel that communicates with the supply channel and is capable of supplying the combustible oil to the combustion device;
The fuel supply apparatus characterized by being configured with a. The gear pump has a discharge pressure set within a range of 0.1 to 0.3 Mpa,
The fuel supply apparatus according to claim 1 , wherein the injection nozzle is disposed with an opening diameter in a range of 0.05 to 2 mm. The metering device, the ratio of the volume of the water to be mixed to the combustible oil, as in the range of 22 to 23%, according to claim 1 or claim 2, characterized in that it is configured for weighing Fuel supply system.

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