JP2012057927A - Method of burning mixed fuel of liquid fuel and water, and mixed fuel injection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contribute to the reduction of the consumption of liquid fossil fuel and the suppression of the generation of a carbon dioxide by surely and properly burning a mixed fuel of liquid fossil fuel and water.SOLUTION: In this method of burning the mixed fuel of the liquid fossil fuel and water by sufficiently mixing and stirring both the liquid fossil fuel and the water immediately before injecting it to a combustion chamber, and then atomizing and injecting the mixed fuel to the combustion chamber to burn it, the injection device is provided to atomize and inject the mixed fuel of the liquid fossil fuel and the water to the combustion chamber.

Description

  The present invention relates to a mixed fuel combustion method in which liquid fuel and water are mixed, and a mixed fuel injection apparatus for a mixed fuel combustion apparatus.

With regard to liquid fossil fuel as an energy source, other energy sources have been actively developed and improved due to the depletion of the remaining amount and carbon dioxide emission restrictions. There is no change.
Therefore, efficient use of liquid fossil fuels, use with less carbon dioxide emissions, and the like are inevitable problems.

  As an effective countermeasure against this problem, a mixed fuel (hereinafter referred to as this fuel), in which water is mixed with heavy oil, which is a liquid fossil fuel that has been proposed so far, via, kerosene (hereinafter simply referred to as “liquid fuel” in this specification). In the specification, it has been proposed to use simply mixed fuel) or to supply liquid fuel and water to the combustion chamber at the same time for combustion.

Conventional mixed fuels have been proposed in which water and liquid fuels are simply mixed or introduced into a combustion chamber and burned as well as so-called mixed fuels using an emulsifier.
However, even though those proposals have been proposed for a long time, there are no examples of effective practical use.

One of the factors that hinders implementation seems to be the use of emulsifiers. It is conceivable that the use of an emulsifier increases the cost, and that the mixed fuel cannot be maintained and stored in a good state for a long time due to being emulsified.
In order to solve the problem, it is only necessary to mix water and liquid fuel without using an emulsifier or the like, or to supply them separately to the combustion chamber and burn them without mixing. Although water does not perform general combustion, it is possible to cause a so-called water combustion phenomenon, but in that case, the conditions for combustion are very complicated and sophisticated, and therefore, it is preferable. It is thought that it may be very difficult to achieve and continue good combustion by maintaining appropriate conditions properly and for a long time.

  Furthermore, in order to obtain good combustion, a good spray from the nozzle must be performed, but in order to obtain a good spray state with the mixed fuel, the spray, the injection device, i.e. the nozzle, can perform a suitable function therefor A possible configuration is required.

  JP-A-50-141604   Japanese Patent Laid-Open No. 10-9514   JP-A-8-261411   Japanese Patent Publication No.58-190612   Japanese Patent Laid-Open No. 11-201412   Japanese Patent Publication No.58-190612

The present inventor tackled such a problem, and as a result of earnest research for solving the problem, the present invention was obtained and the problem could be solved.
The gist of the present invention is as follows. That is, a sufficiently agitated and mixed state of liquid fuel and water (in some cases, water vapor) can be obtained, and the sufficiently mixed fuel is injected into the combustion chamber using an appropriate amount of air, but the mixed fuel is injected. In particular, the liquid fuel has a small particle size, and the injected mixed fuel is sprayed in a state where it is diffused as widely as possible vertically and horizontally toward the combustion chamber.

Prior to combustion of the sprayed mixed fuel, it is indispensable that only the liquid fuel is burned in the combustion chamber and the combustion chamber is raised above a certain temperature. It is within the range.
These requirements are important in terms of continuity, correlation, and combination, and the novelty and inventive step of the present invention are not denied by them even if the individual means are known means alone.

In the first aspect of the present invention, water and liquid fuel are sufficiently mixed in a mixing device, and then the mixed fuel mixture is supplied to the injection guide pipe, and the pressurized air is supplied together with the pressurized air from the opening of the injection guide pipe. A method of combusting a mixed fuel of liquid fuel and water, wherein the mixed fuel is injected into a combustion chamber by a century action by injection and burned.
It is necessary to inject the mixed fuel in a state where the mixed state is sufficiently maintained. Therefore, it is preferable to maintain and promote mixing in the injection guide pipe.

  A second aspect of the present invention is a method for combusting a mixed fuel of liquid fuel and water in which the mixed fuel is injected into the combustion chamber through the diffusion means in the method of the first aspect. The diffusion is preferably made as uniform as possible over a wide range.

The invention of claim 3 is a mixing means for receiving water or steam and liquid fuel and mixing them,
An injection induction pipe provided between the mixing means and the combustion chamber opening, which is connected to the mixing means and has an opening at a fuel injection opening portion of the combustion chamber, drawn into the injection induction pipe, and the tip of the injection induction pipe This is a mixed fuel injection device of liquid fuel and water or water vapor comprising an air-pipe that opens at a position close to the opening.
The means for supplying water or water vapor and liquid fuel to the mixing means, the mixing means may be conventional means. The means for diffusion may also be conventional.
The injection guide pipe is preferably provided with a suitable mixing means such as a screw group on the inner wall in order to achieve a sufficient mixing state and to maintain the mixing state before injection.

  According to a fourth aspect of the present invention, in the apparatus of the third aspect, a diffusing means is provided at the tip opening of the injection guide pipe. The diffusing means itself may be a conventional one, for example, it may be a lotus of rain dew.

  According to the invention of claim 5, water and liquid fuel are separately injected into a single mixer by pressurized air to form a fine mist state, and the liquid fuel and water in the mist state are injected into the mixer. Is a method of combusting a mixed fuel of liquid fuel and water in which the sufficiently mixed fuel is then directly injected from the mixer directly into the combustion chamber. 6. A fuel injection device for mixed fuel of liquid fuel and water or water vapor according to one aspect for carrying out the method of claim 5, wherein water or water vapor spraying device sprays water or water vapor by air, and liquid fuel is air- A liquid fuel spraying device that sprays and sprays, a mixing device that separately receives sprayed water or water vapor and liquid fuel, and mixes water or water vapor and liquid fuel, and the mixing device jets the mixed water and liquid fuel into the combustion chamber Inject through opening Having an injection port for, the more.

  According to a sixth aspect of the present invention, in the method of the fifth aspect, the injection of the liquid fuel and water into the mixer is not directly injected into the mixer, but is injected into the spray induction pipe connected to the mixer. It is a combustion method of a mixed fuel of liquid fuel and water, which is in a mist state and then injected and mixed into the mixer from its spray induction pipe, and the invention of claim 12 is for carrying out the method of claim 6 It is an injection device of a mixed fuel of liquid fuel and water or water vapor, water or water vapor spray device spraying and spraying water or water vapor by air, water or water vapor sprayed by being connected to water or water vapor spray device Water or water vapor induction supply pipe that receives and sends to a mixer connected to the tip, liquid fuel spray device that sprays liquid fuel by air, liquid fuel spray device that is connected to the liquid fuel spray device and sprayed The liquid fuel induction supply pipe, the water or steam induction supply pipe, and the liquid fuel induction supply pipe connected to the tip connected to the tip are connected to the sprayed water or water vapor and liquid fuel supplied from these pipes. The mixing device includes an injection port that opens toward a combustion chamber of the combustion device for mixing.

  A seventh aspect of the present invention is a method for burning a mixed fuel of liquid fuel and water using water vapor instead of water in the fifth or sixth aspect of the invention.

  The invention according to claim 8 is the invention according to claim 5 or claim 6, wherein the injection of the mixed fuel from the mixer to the combustion chamber is not performed directly from the mixer to the combustion chamber, but between the injection ports of the mixer and the combustion chamber. A method of combusting a mixed fuel of liquid fuel and water that passes through an agitator provided therebetween and is injected from the agitator into a combustion chamber. This is a method for combusting a mixed fuel of liquid fuel and water in which a mixed fuel is injected into a combustion chamber through a spray guiding pipe provided with a pump.

  According to a tenth aspect of the present invention, in the above method for combusting a mixed fuel of liquid fuel and water, the injection of the mixed fuel is not performed directly from the mixer to the combustion chamber, but at a position close to the injection opening of the combustion chamber. This is a method for burning a mixed fuel of liquid fuel and water, which is performed via a diffusion device.

  According to a thirteenth aspect of the present invention, in the apparatus of the eleventh aspect of the invention, mixed fuel injection of liquid fuel and water or water vapor provided with a stirring pipe between the injection port to the combustion chamber of the mixing device and the injection opening of the combustion chamber According to a fourteenth aspect of the present invention, there is provided a combustion injection device for a mixed fuel of liquid fuel and water or water vapor provided with a stirring screw group on the inner wall of the stirring pipe.

  The invention according to claim 15 is a multilayer having a liquid fuel supply chamber in the center, a water supply chamber in the outer periphery of the chamber, and an air supply chamber in the outer periphery. Using the structure nozzle, pressurized liquid fuel is supplied to the liquid fuel supply chamber, pressurized water is supplied to the water supply chamber, and at the same time, the air supply chamber is pressurized. By supplying air, liquid fuel and water are injected from the nozzle outlet, and at the same time, these injections are atomized and mixed in a mixed state by the venturi action combined with the outermost air jet. This is a method for burning a mixed fuel of liquid fuel and water that is injected, supplied to a combustion chamber of a combustion apparatus and burned.

  According to a sixteenth aspect of the present invention, there is provided a method for combusting a mixed fuel of liquid fuel and water, wherein a liquid fuel and water mixing supply chamber is provided at the center, and an air supply chamber is provided at the outer periphery of the chamber. Using a 20-layer nozzle, the pressurized liquid fuel and water are supplied to the liquid fuel and water supply chamber, and at the same time, the liquid fuel and water are mixed and simultaneously pressurized to the air supply chamber. The liquid fuel and water mixed by supplying the air are injected from the nozzle injection port, and at the same time, the injection is sprayed in the form of a mist in combination with the venturi action of the outermost air jet. This is a method of burning a mixed fuel of liquid fuel and water that is injected, supplied to a combustion chamber and burned.

  According to a seventeenth aspect of the present invention, in the method of the sixteenth aspect, the mixing means in the liquid fuel and water mixing supply chamber is a screw group provided on the inner wall of the chamber. This is a fuel combustion method.

  According to the eighteenth aspect of the present invention, in the method of the sixteenth or seventeenth aspect, the liquid fuel having a mixing screw group on an inner wall portion connected to the mixing supply chamber of the liquid fuel and water to the chamber. This is a method for burning a mixed fuel of liquid fuel and water, which is performed via a supply pipe and a water supply pipe.

  According to a nineteenth aspect of the present invention, in the method of the sixteenth or seventeenth aspect, the liquid fuel and water are mixed in the liquid fuel and water mixing supply chamber, and the water supply is provided in the filter. This is a method for burning a mixed fuel of liquid fuel and water by being supplied into the chamber through the means.

  According to a twentieth aspect of the present invention, in the method of the sixteenth or seventeenth aspect, the liquid fuel and water mixed in the liquid fuel and water mixing supply chamber are mixed by a screw means provided in the chamber. Is a method of burning a mixed fuel of water and water.

  According to a twenty-first aspect of the present invention, in the method of the sixteenth or seventeenth aspect, mixing of the liquid fuel and water in the liquid fuel and water mixing supply chamber speeds up the supply to the liquid fuel and water chamber. This is a method for burning a mixed fuel of liquid fuel and water, which is performed by alternately supplying liquid fuel and water via a switching valve.

The invention of claim 22 has the chamber for supplying liquid fuel at the center, and the chamber for supplying water or water vapor at the outer periphery of the chamber capable of carrying out the method of claim 15. Furthermore, each of the chambers is a combustion injection nozzle of a mixed fuel of liquid fuel and water or water vapor having an opening at substantially the same position of the tip portion. is there.
Of course, each chamber is connected to a respective pipe means for receiving a supply of liquid fuel, water or steam or air.

  The invention of claim 23 has the chamber for supplying liquid fuel and water or water vapor at the center, and the air supply chamber at the outer periphery of the chamber capable of carrying out the method of claim 16. A combustion injection nozzle for mixed fuel, wherein each chamber is an injection nozzle for mixed fuel of liquid fuel and water or water vapor having an opening at substantially the same position of the tip, and the invention of claim 24 is the invention of claim 23 A nozzle for mixing liquid fuel and water or water vapor is provided with a mixing screw group on the inner wall of a liquid fuel and water or water vapor supply chamber in the center of the nozzle.

  According to a twenty-fifth aspect of the present invention, in the twenty-third aspect, the stirring screw is provided on the inner wall portion of the supply pipe for supplying the liquid fuel and water or water vapor to the liquid fuel and water or water vapor supply chamber at the center. It is an injection nozzle for a mixed fuel of liquid fuel and water or water vapor provided with a group.

  According to a twenty-sixth aspect of the present invention, in the twenty-third aspect, the liquid fuel provided with propeller means for stirring the liquid fuel and water or water vapor supplied into the water or water vapor supply chamber in the center is provided. It is an injection nozzle of a mixed fuel of water and water or steam.

  According to a twenty-seventh aspect of the present invention, in the invention of the twenty-third aspect, filter means is provided in the chamber for supplying liquid fuel and water or water vapor in the central portion, and supply means for liquid fuel and / or water is provided in the filter means. It is an injection nozzle for a mixed fuel of a connected liquid fuel and water or water vapor.

  According to a twenty-eighth aspect of the present invention, in the twenty-third aspect, the liquid fuel and water or water vapor are alternately supplied between the liquid fuel and water or water vapor supply chamber in the center and the liquid fuel and water or water vapor supply means. It is an injection nozzle for a mixed fuel of liquid fuel and water or water vapor provided with switching valve means for supplying the liquid fuel and water or water vapor supply chamber in the center.

In the inventions of claims 23 to 28, it is natural that pipe means for receiving the supply of air is connected to the air supply chamber.
In any apparatus, a conventional mechanism for supplying liquid fuel, water or water vapor, or air may be used.

  According to the mixed fuel combustion method and combustion apparatus of the present invention, water and liquid fuel are simply burned, and water does not interfere with combustion and burns itself to contribute to generation of combustion energy. The amount of liquid fuel consumed for the production can be reduced, and the carbon dioxide gas generated can be reduced.

  It is a typical conceptual diagram of the mixed fuel injection device of the present invention.   It is a typical conceptual diagram of the mixed fuel injection device of the present invention.   It is typical sectional drawing of the mixed fuel injection apparatus of this invention.   It is typical sectional drawing of the mixed fuel injection apparatus of this invention.   It is typical sectional drawing of the mixed fuel injection nozzle of this invention.   It is typical sectional drawing of the mixed fuel injection nozzle of this invention.   It is typical sectional drawing of the mixed fuel injection nozzle of this invention.   It is typical sectional drawing of the mixed fuel injection nozzle of this invention.   It is typical sectional drawing of the mixed fuel injection nozzle of this invention.   It is typical sectional drawing of the mixed fuel injection nozzle of this invention.   It is a graph of a combustion experiment result.   It is a graph of a combustion experiment result.

  The mixing of the liquid fuel and water is not performed immediately before the injection for combustion, and the mixed fuel can be burned simply by forcibly stirring and mixing the two and injecting them into the combustion chamber.

FIG. 1 is a schematic cross-sectional view of a mixed fuel injection nozzle of the present invention.
In the figure, 1 is the entire mixed fuel injection nozzle, 2 is a combustion chamber, 3 is a spray induction pipe, 4 is a mixing device, 5 is an air pipe, 6 is a liquid fuel supply pipe, 7 is a water supply pipe, 8 is a diffusion device, 9 is an injection opening of the spray induction pipe.

  In the diffusing device 8, the injected mixed fuel is injected into the combustion chamber in a straight line in the forward direction, so that the injected mixed fuel spreads in the left and right and up and down directions to diffuse into the combustion chamber to ensure good combustion. It is intended to be supplied.

In FIG. 1, the devices relating to the supply of liquid fuel, water and air and their pressurizing means are not shown because they may be conventional means.
The injection opening 9 of the injection nozzle has a diameter of about 2 mm. The diameter of the air pipe is about 5 mm, the diameter of the spray guide pipe 3 is about 15 cm, and the liquid fuel supply pipe 6 and the water supply pipe 7 are both about 10 mm in diameter. However, in the figure, the dimensional ratio does not correspond to the embodiment.

The operation of this mixed fuel injection nozzle will be described.
Liquid fuel and water are pressurized by air-compressors in their respective sealed storage tanks and sent to the mixed fuel injection device via liquid fuel supply pipe 6 and water supply pipe 7.
In this mixed fuel injection nozzle, the mixed fuel, water and air are all supplied in a pressurized state.
The supply amount and pressurization of the liquid fuel are controlled separately in a timely manner in order to maintain a good combustion state and maintain a good combustion.

Also, the amount of air supplied is adjusted in accordance with the amount of liquid fuel supplied so that combustion can be performed satisfactorily.
Means for controlling these flow rates are conventional.
In this mixed fuel injection nozzle, liquid fuel, water, and air can be separately supplied. For example, at the initial stage of combustion, only liquid fuel can be independently injected and burned. This single injection of liquid fuel alone is an indispensable requirement in the combustion of a fuel mixture with water.

Using the mixed fuel injection nozzle of Example 1, a combustion test of a mixed fuel of liquid fuel and water was performed using a general boiler.
The liquid fuel was heavy oil and the water was tap water.
First, only heavy oil was injected and ignited and combusted. When the temperature of the combustion flame rose to about 1,200 ° C., the supply of water was started and injection of the mixed fuel was started.
Combustion of the mixed fuel continued with increasing water supply.

The mixing ratio of water was increased from 0 wt% to 73.0 wt%. When the amount was 73.0% by weight or more, the combustion state was extremely deteriorated.
When the supply of heavy oil was stopped on a trial basis, that is, when only water was supplied, combustion stopped immediately.
In this test, the water supply was gradually increased without rapidly increasing, and the entire test nozzle stroke was performed over a period of about 30 minutes with the water mixing ratio from 60 wt% to 73.0 wt%.

  In this combustion experiment, the temperature of the combustion flame and the temperature of the upper inner wall of the combustion chamber were measured with an infrared temperature measurement scope from a small window provided in the combustion chamber. Since the flame fluctuates, the measured temperature is not constant, so the lowest and highest measured values were taken, and the average value was taken as the combustion temperature.

Although the temperature of the combustion chamber gradually decreased until the water supply rate was around 40% by weight, the temperature of the combustion chamber gradually increased from the water supply rate around 40% by weight, and the water supply rate exceeded 60% by weight. The temperature became the highest around.
From this, the combustion of water started when the water supply ratio was around 40% by weight, and when the mixing ratio of water exceeded 50% by weight, the combustion became stable and the state shifted to a complete water combustion state. Observed. The flame temperature when the mixing ratio of water exceeded 50% by weight was about 860 ° C., the temperature of the inner wall of the combustion chamber was about 760 ° C., and the temperature of the upper space of the combustion chamber was about 605 ° C.

It was observed that the combustion state was the most stable state when the mixing ratio of water was around 67%. At this time, the flame temperature was about 660 ° C., the temperature of the inner wall of the combustion chamber was about 790 ° C., and the temperature of the upper space of the combustion chamber was about 635 ° C.
Combustion was continued even when the mixing ratio of water was 72%, but the test was completed at this point because the overall temperature started to decrease. At this time, the flame temperature was about 630 ° C., the temperature of the inner wall of the combustion chamber was about 730 ° C., and the temperature of the upper space of the combustion chamber was about 610 ° C.
The results of this combustion test are shown in Table 1. Table 1 is shown as a graph in FIG.

FIG. 2 is a diagram schematically showing another aspect of the mixed fuel injection device nozzle of the present invention.
In the figure, 11 is a mixed fuel mixing device, 12 is a liquid fuel spray nozzle, 13 is a water spray nozzle, 14 is a combustion chamber, and 15 is a mixed fuel injection opening of the combustion chamber.
In this mixed fuel injection device, the mixed fuel is not directly injected into the combustion chamber from the liquid fuel spray nozzle and the water spray nozzle, but the liquid fuel and water are sprayed and sprayed from the respective nozzles to the mixing device by air. The liquid fuel and water are sufficiently mixed in the mixing device and then injected into the combustion chamber from the injection opening of the combustion chamber to burn the mixed fuel.
In the mixing apparatus, a conventional mixing means can be adopted if necessary.
In addition, a diffusion device can be appropriately provided at the injection opening of the combustion chamber so that the mixed fuel is spread and injected into the combustion chamber.

FIG. 3 is a view schematically showing another mixed fuel injection device of the present invention.
Unlike the mixed fuel injection device of FIG. 2, the mixed fuel injection device of this embodiment does not spray liquid fuel and water directly into the mixing device 11 from the mixed fuel spray nozzle 12 and the water spray nozzle 13 to the mixing device 11, respectively. Spray induction pipes 16 and 17 are provided between the mixing device 11 and the respective spray nozzles 12 and 13 for receiving separately sprayed liquid fuel or water and guiding them to the mixing device.
Of course, a diffusion device can be provided in the injection opening 15 of the combustion chamber 14, which is preferred.

FIG. 4 is a mixed fuel injection device in which the mixed fuel injection device of FIG. 2 is partially modified, and a stirring pipe 18 for stirring the mixed fuel is provided between the mixing device 11 and the injection opening 15 of the combustion chamber 14. It is.
In this apparatus, the mixed fuel is not directly injected from the mixing apparatus 11 into the combustion chamber 14 but is injected into the combustion chamber 14 via a stirring pipe 18 interposed between the mixing apparatus 11 and the combustion chamber 14.

The spray-like mixed fuel is stirred when passing through the stirring pipe 18, mixed sufficiently, and injected into the combustion chamber 14.
The stirring pipe 18 is provided with stirring means. In this embodiment, a screw group 19 is provided on the inner wall of the stirring pipe 18.
Other stirring means can be provided alone or in combination.

Using the mixed fuel injection apparatus of Example 5, a combustion test of a mixed fuel of liquid fuel and water was performed using a general boiler.
The liquid fuel was heavy oil and the water was tap water.
First, only heavy oil was injected and ignited and combusted. When the temperature of the combustion flame rose to about 1,212 ° C., water supply was started and injection of mixed fuel was started.

Combustion of the mixed fuel continued with increasing water supply.
Combustion was continued by changing the mixing ratio of water with respect to the whole mixed fuel from 0 to 0.690% by weight while sequentially changing the supply rates of liquid fuel and water.
Table 2 shows the mixing amount of liquid fuel and water, the mixing ratio of water to the whole, the temperature of the flame at that time, and the temperature of the wall of the combustion chamber.
A graph showing this relationship is shown in FIG.

When the proportion of water approached 30% by weight, the combustion temperature began to decrease, and when it exceeded 35% by weight, the decrease in temperature stopped and an almost constant combustion temperature was obtained at a higher rate.
In addition, when the combustion temperature began to fall, it was observed from the color of the flame, combustion noise, combustion odor, etc. that the combustion mode was clearly changed.
This is thought to indicate that the combustion of water has begun and continued.

FIG. 5 is a diagram schematically showing another aspect of the mixed fuel injection nozzle of the present invention different from the above embodiment.
This mixed fuel injection nozzle is provided with a liquid fuel supply chamber-21, a water supply chamber-22 on the outer periphery thereof, and an air supply chamber-23 on the outer periphery of the liquid fuel supply chamber-21. Are supplied with pressurized liquid fuel, water and air from a liquid fuel supply pipe 24, a water supply pipe 25 and an air supply pipe 26, respectively.

The ends of the liquid fuel supply chamber-21, the water supply chamber-22, and the air-supply chamber-23 open at substantially the same position.
The liquid fuel and water supplied in the pressurized state are injected into the combustion chamber with the self pressurized state when the air supplied to the outermost air supply chamber 23 is injected into the combustion chamber from the tip opening 36. By the venturi action caused by the ejection, the fuel is injected from the injection opening 36 into the combustion chamber 14 through the opening 15 of the combustion chamber in a mixed state in a spray state.
A conventional diffusion device is preferably provided in the opening 15 of the combustion chamber so that the mixed fuel is diffused widely vertically and horizontally.

FIG. 6 shows still another embodiment of the mixed fuel injection nozzle of the present invention.
In the figure, 31 is a mixed fuel storage chamber, and a liquid fuel supply pipe 33 for supplying liquid fuel from the outside and a water supply pipe 34 for supplying water are connected in communication.
An air supply chamber 32 is coaxially provided on the outer periphery of the mixed fuel storage chamber 31.
The air supply chamber 32 is connected to an air supply pipe 37 through which pressurized air is sent from the outside.

The entire inner wall of the mixed fuel storage chamber 31 is provided with a screw group 35 as nozzle means for sufficiently stirring and mixing liquid fuel and water supplied in a pressurized state.
The liquid fuel and water which are pressurized and supplied to the mixed fuel storage chamber 31 are sufficiently stirred and mixed by the action of the screw group 35 in the mixed fuel storage chamber 31, and are mixed from the opening 36. A fine mist is formed by the venturi action by the air injected at a high speed from the opening 36 of the air supply chamber 32 which is injected but opened at the same position, and then from the opening 15 of the combustion chamber 14 to the combustion chamber 14. It is sprayed and injected inside.
A conventional diffusion device is preferably provided in the opening 15 of the combustion chamber so that the mixed fuel is diffused widely vertically and horizontally.

FIG. 7 is a schematic view of the mixed fuel injection nozzle shown in FIG. 6, in which the liquid fuel supply pipe 33 and the water supply pipe 34 connected to the mixed fuel storage chamber 31 are screwed on the inner wall of the portion close to the liquid fuel storage chamber 31. -A 38 is provided. As a result, the liquid fuel and water are sufficiently agitated even in a single state immediately before the liquid fuel and water are supplied to the liquid fuel storage chamber-31, and mixing and agitation in the mixed fuel storage chamber-31 are promoted. Will be.
Also in this mixed fuel injection nozzle, it is preferable to provide a conventional diffusion device in the combustion chamber opening 15 so that the mixed fuel is diffused widely vertically and horizontally.

  FIG. 8 is basically the same configuration as the mixed fuel injection nozzle shown in FIG. 6 except that a liquid fuel is used in place of the screw group provided on the inner wall of the mixed fuel storage chamber 31 of the mixed fuel injection nozzle of FIG. A filter means 39 is provided in the storage chamber 31, and a water supply pipe 34 is connected to the filter means 39 so that water is supplied into the mixed fuel storage chamber 31 through the filter means 39. 1 schematically shows a fuel injection nozzle.

In this figure, the screw group on the inner wall of the liquid fuel storage chamber 31 is not shown.
Water is agitated and mixed by supplying water to the liquid fuel storage chamber 31 through the filter means 39. A screw group is provided on the inner wall of the liquid fuel storage chamber. Of course, it may be.

FIG. 9 shows a mixed fuel injection nozzle having basically the same structure as the mixed fuel injection nozzle of FIG. 6, but the screw group provided on the inner wall of the mixed fuel storage chamber 31 of the mixed fuel injection nozzle of FIG. Instead, a mixed fuel injection nozzle provided with propeller means 40 as means for stirring and mixing the mixed fuel in the mixed fuel storage chamber-31 is shown.
Stirring and mixing of the liquid fuel and water supplied to the liquid fuel storage chamber 31 by the propeller means 40 are performed. Of course, a screw group may be provided on the inner wall of the liquid fuel storage chamber. is there.

FIG. 10 shows a mixed fuel injection nozzle having basically the same configuration as that of the mixed fuel injection nozzle of FIG. 6, but a high-speed switching valve means 41 is provided to supply liquid fuel and water into the mixed fuel storage chamber 31. The mixed fuel injection nozzle of the aspect which supplies a liquid fuel and water alternately in the mixed fuel storage chamber-31 by the switching means 41 in the parting state is shown.
The liquid fuel and water are alternately supplied as fine particles, whereby the mixed fuel is stirred and mixed.
Also in this embodiment, it goes without saying that a screw group may be provided on the inner wall of the liquid fuel storage chamber 31.

  Only less liquid fuel is needed to achieve a given combustion, which can greatly contribute to the savings of finite liquid fossil fuels and can contribute to the problem of reducing carbon monoxide emissions without waiting.

DESCRIPTION OF SYMBOLS 1 Mixed fuel injection nozzle 2 Combustion chamber 3 Spray induction pipe 4 Mixing device 5 Air-pipe 6 Liquid fuel supply pipe 7 Water supply pipe 8 Diffusion device 9 Injection opening of spray induction pipe 11 Mixing device 12 Mixed fuel spray nozzle 13 Water spray nozzle 14 Combustion chamber 15 Mixed fuel injection opening 16 in combustion chamber Spray guide pipe 17 Spray guide pipe 18 Stir pipe 19 Screw group 21 Liquid fuel supply chamber
22 Water supply chamber
23 Air supply chamber
24 Liquid fuel supply pipe 25 Water supply pipe 26 Air supply pipe 31 Mixed fuel storage chamber
32 Air supply chamber
33 Mixed fuel supply pipe 34 Water supply pipe 35 Screw group 36 Opening 37 Air supply pipe 38 Screw group 39 Filter
40 Propeller 41 Fast switching valve means

Claims (28)

  In the method of combusting a mixed fuel of liquid fuel and water, water and liquid fuel are sufficiently mixed in a mixing device, and then the mixed mixed fuel is supplied to an injection induction pipe, and pressurized air is supplied from an opening of the injection induction pipe. In addition, a mixed fuel combustion method of liquid fuel and water is characterized in that the mixed fuel is injected into the combustion chamber and burned by a venturi action by injection of pressurized air.   2. A method for combusting a mixed fuel of liquid fuel and water according to claim 1, wherein injection of the mixed fuel into the combustion chamber is performed through a diffusion means. A mixing means for receiving water or steam and liquid fuel and mixing them;
An injection guide pipe provided between the mixing means and the opening of the combustion chamber, which is connected to the mixing means and has an opening in a fuel injection opening portion of the combustion chamber;
An air-pipe that is drawn into the injection guide pipe and that opens at a position close to the opening of the injection guide pipe;
A mixed fuel injection device comprising liquid fuel and water or water vapor.   4. A mixed fuel injection device of liquid fuel and water or water vapor according to claim 3, wherein a diffusion means is provided at the tip opening of the injection guide pipe.   In a method of burning a mixed fuel of liquid fuel and water, water and liquid fuel are separately injected into a single mixer by pressurized air to form a fine mist. A method of combusting a mixed fuel of liquid fuel and water in which liquid fuel and water are sufficiently mixed to obtain a mixed fuel, and then the sufficiently mixed fuel is immediately injected directly from the mixer into the combustion chamber.   Rather than directly injecting liquid fuel and water into the mixer, it is injected into the spray induction pipe connected to the mixer to form a mist, and then from the spray induction pipe into the mixer. 6. The method for combusting a mixed fuel of liquid fuel and water according to claim 5, wherein the mixed fuel is injected and mixed.   The method for burning a mixed fuel of liquid fuel and water according to claim 5 or 6, wherein the water is water vapor.   Rather than direct injection of mixed fuel from the mixer to the combustion chamber to the combustion chamber, the mixture is passed through a stirring device provided between the mixer and the injection opening of the combustion chamber and then passed from the stirring device to the combustion chamber. The combustion method of the mixed fuel of the liquid fuel and water of Claim 5 or Claim 6 to inject.   9. The method for combusting a mixed fuel of liquid fuel and water according to claim 8, wherein the stirring device is a spray guiding pipe having a screw group on the inner wall.   10. The method of combusting a mixed fuel of liquid fuel and water according to claim 5 to 9, wherein injection of mixed fuel from the mixer into the combustion chamber is performed via a diffusion device provided between the mixer and the injection port of the combustion chamber. . Water or steam spraying device for spraying water or steam by air;
A liquid fuel spraying device for spraying liquid fuel by air;
A mixing device for separately receiving sprayed water or water vapor and liquid fuel and mixing the water or water vapor and liquid fuel, and the mixing device is an injection for injecting the mixed water and liquid fuel through the injection opening of the combustion chamber Having a mouth,
A mixed fuel injection device comprising liquid fuel and water or water vapor. Water or steam spraying device for spraying water or steam by air;
A water or water vapor induction supply pipe connected to a water or water vapor spray device to receive sprayed water or water vapor and send it to a mixer connected to the tip;
A liquid fuel spraying device for spraying liquid fuel by air;
A liquid fuel induction supply pipe connected to the liquid fuel spraying device and receiving the sprayed liquid fuel and sending it to the mixer connected to the tip;
A mixing device having an injection port connected to a water or water vapor induction supply pipe and a liquid fuel induction supply pipe for mixing sprayed water or water vapor and liquid fuel supplied from these pipes and opening toward a combustion chamber of the combustion device ,
A mixed fuel injection device comprising liquid fuel and water or water vapor.   The mixed fuel injection device of liquid fuel and water or water vapor according to claim 11 or 12, wherein a stirring pipe is provided between an injection port to the combustion chamber of the mixing device and an injection opening of the combustion chamber.   14. The mixed fuel injection device for liquid fuel and water according to claim 13, wherein a stirring screw group is provided on the inner wall of the stirring pipe.   In a combustion method of a mixed fuel of liquid fuel and water, a liquid fuel supply chamber is provided at the center, a water supply chamber is provided at the outer periphery of the chamber, and air is supplied to the outer periphery. Using a multi-layer nozzle having a chamber, pressurized liquid fuel is supplied to the liquid fuel supply chamber, and pressurized water is supplied to the water supply chamber, and at the same time, an air supply chamber -By supplying pressurized air to-, liquid fuel and water are injected from the nozzle outlet, and at the same time, these injections are atomized by the venturi action combined with the outermost air jet. A method for combusting a mixed fuel of liquid fuel and water, wherein the fuel is injected into a combustion chamber of a combustion apparatus in a mixed state, supplied, and burned.   In a method of burning a mixed fuel of liquid fuel and water, a nozzle having a multilayer structure having a chamber for supplying mixed liquid fuel and water at the center and an air supply chamber at the outer periphery of the chamber is provided. By supplying pressurized liquid fuel and water to the liquid fuel and water supply chamber, and simultaneously mixing the liquid fuel and water, and simultaneously supplying pressurized air to the air supply chamber The mixed liquid fuel and water are injected from the nozzle injection port. At the same time, the injection is sprayed and injected in the form of a mist in combination with the venturi action of the outermost air jet, and supplied to the combustion chamber. A method for burning a mixed fuel of liquid fuel and water, characterized in that the fuel is burned.   17. The method for combusting a mixed fuel of liquid fuel and water according to claim 16, wherein the mixing means in the liquid fuel and water mixing supply chamber is a screw group provided on the inner wall of the chamber.   The liquid fuel and water are supplied to the mixed supply chamber via a liquid fuel supply pipe having a mixing screw group on the inner wall connected to the chamber and a water supply pipe. A method for burning a mixed fuel of liquid fuel and water according to claim 16 or claim 17.   The liquid fuel and water are mixed in the liquid fuel and water mixing supply chamber by supplying the water into the chamber through a filter means provided in the chamber. A method for burning a mixed fuel of liquid fuel and water according to claim 16 or claim 17.   18. The combustion of the mixed fuel of liquid fuel and water according to claim 16 or 17, wherein mixing of the liquid fuel and water in the liquid fuel and water mixing supply chamber is performed by screw means provided in the chamber. Method.   The liquid fuel and water are mixed in the liquid fuel and water mixing supply chamber, and the liquid fuel and water are alternately supplied to the liquid fuel and water chamber through a fast switching valve. 18. A method for combusting a mixed fuel of liquid fuel and water according to claim 16 or 17, which is carried out as described above.   A mixed fuel combustion injection nozzle having a liquid fuel supply chamber in the center, a water or steam supply chamber in the outer periphery of the chamber, and an air supply chamber in the outer periphery of the chamber. Each chamber is a combustion injection nozzle of a mixed fuel of liquid fuel and water or steam having an opening at substantially the same position at the tip.   A fuel injection nozzle of a mixed fuel having a chamber for supplying liquid fuel and water or water vapor at the center, and an air supply chamber at the outer periphery of the chamber. An injection nozzle for a fuel mixture of liquid fuel having water and water or water vapor.   24. An injection nozzle for a mixed fuel of liquid fuel and water or water vapor according to claim 23, wherein a mixing screw group is provided on the inner wall of the liquid fuel and water or water vapor supply chamber in the center.   25. The liquid fuel according to claim 24, wherein a supply pipe provided with a stirring screw group is connected to an inner wall portion for supplying the liquid fuel and water or water vapor to the liquid fuel and water or water vapor supply chamber in the center. Injection nozzle for mixed fuel of water and water or steam.   25. Injection of a mixed fuel of liquid fuel and water or water vapor according to claim 24, provided with propeller means for stirring the liquid fuel and water or water vapor supplied into the liquid fuel and water or water vapor supply chamber in the center. nozzle.   24. The liquid fuel and water or water vapor according to claim 23, wherein a filter means is provided in the liquid fuel and water or water vapor supply chamber in the center, and the liquid fuel and / or water supply means are connected to the filter means. Injection nozzle for mixed fuel.   The liquid fuel and water or water vapor supply chambers in the center are alternately placed between the liquid fuel and water or water vapor supply chamber in the center and the liquid fuel and water or water vapor supply means. An injection nozzle for combustion of a mixed fuel of liquid fuel and water or water vapor according to claim 23, further comprising a switching valve means for supplying to the fuel.

Images