Combustion device and combustion method

Abstract

To burn hydrogen safely and easily. [Solution] The combustion device has a hot water generating unit 1 equipped with a storage unit 112 for storing water, a placement unit 113 for placing solid fuel that reacts with the water in the storage unit 112 to release hydrogen, and a combustion unit for burning the generated hydrogen, and a control unit for controlling the temperature of the stored water.

Description

[Technical field]

[0001] The present invention relates to a combustion device and a combustion method. [Background technology]

[0002] There are known methods for burning hydrogen gas, such as a method in which hydrogen gas or a combustion gas mainly composed of hydrogen is passed through water in the form of bubbles or brought into contact with the water surface, and then 5 to 50% by volume of water vapor is added, and then the gas is burned. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 51-130929 Summary of the Invention [Problem to be solved by the invention]

[0004] Hydrogen, by its very nature, is difficult to handle and has the problem of being difficult to burn stably. In one aspect, the present invention aims to combust hydrogen safely and easily. [Means for solving the problem]

[0005] In order to achieve the above object, the present invention provides a combustion device that includes a storage section for storing a liquid, a storage section for storing a fuel that is solid at room temperature and reacts with the liquid in the storage section to release hydrogen, a combustion section for burning the generated hydrogen, and a temperature control section for controlling the temperature of the liquid. Effect of the Invention

[0006] In one embodiment, hydrogen can be burned safely and easily. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a diagram illustrating a combustion system according to an embodiment. [Diagram 2] 1 is a perspective view showing a combustion device according to an embodiment; [Diagram 3] FIG. 2 is a transparent side view of the combustion device according to the embodiment. [Figure 4] FIG. 4 is a cross-sectional view taken along line AA shown in FIG. [Diagram 5] FIG. 13 is a diagram showing an example of an input solid fuel. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, a combustion apparatus according to an embodiment will be described in detail with reference to the drawings.

[0009] In order to facilitate understanding of the invention, the position, size, shape, range, etc. of each component shown in the following drawings may not represent the actual position, size, shape, range, etc. Therefore, the present invention is not necessarily limited to the position, size, shape, range, etc. disclosed in the drawings, etc. In the embodiments, elements expressed in the singular form include the plural form unless otherwise clearly indicated in the context. <Embodiment Mode> FIG. 1 is a diagram illustrating a combustion system according to an embodiment. The combustion device 100 has a hot water generating section 1 and a control section (computer) 2. The hot water generating unit 1 generates hot water by disposing a fuel that is solid at room temperature in liquid and combusting the generated hydrogen on the surface of the liquid. The control unit 2 controls the temperature and the flow rate of the liquid so that the combustion in the hot water generating unit 1 is carried out safely. Fig. 2 is a perspective view showing the hot water generating unit of the embodiment, Fig. 3 is a transparent side view of the hot water generating unit of the embodiment, Fig. 4 is a cross-sectional view taken along line AA shown in Fig. 3. The hot water generating section 1 of the embodiment has a combustion tube 11 , a fuel inlet 12 , a first water inlet 13 , a wastewater / residue discharge port 14 , a second water inlet 15 , and a drain port 16 .

[0010] The combustion cylinder 11 has a cylindrical shape. A lid portion 111 is disposed on the upper portion of the combustion cylinder 11. An opening portion 111a is formed in the lid portion 111. The fuel inlet 12 is inserted into the opening portion 111a.

[0011] The fuel inlet 12 has an opening 121 through which solid fuel is introduced. In addition to being able to introduce solid fuel manually into the opening 121, a solid fuel introduction device (not shown) can also be disposed, and the amount of solid fuel introduced per unit time can be controlled according to instructions from the control unit 2. A general fixed-volume supply device can be used as this solid fuel introduction device. This solid fuel is a fuel that is solid at room temperature and releases hydrogen gas by reacting with liquid. Examples of solid fuels include magnesium hydride (MgH2) and calcium hydride (CaH2).

[0012] As shown in FIG. 3, within the combustion liner 11, a reservoir 112, a placement portion (fuel trap) 113, a fuel guide 114, an intake port 115, and a heat exchanger 116 are provided.

[0013] The storage unit 112 stores liquid (such as water or acidic liquid) for reacting and burning the solid fuel. In this embodiment, the storage unit 112 stores water. In FIG. 4, the stored water is indicated by diagonal lines.

[0014] The solid fuel introduced from the opening 121 is placed in the placement section 113. The end of the placement section 113 is formed along the wall surface of the combustion tube 11, and is annular in shape surrounding the fuel guide 114 in plan view. The placement section 113 has a fine mesh structure. The solid fuel that has progressed in reaction falls through the mesh. The fuel guide 114 guides the input solid fuel to the placement section 113 . The air intake 115 can take in outside air into the combustion liner 11 .

[0015] Water for reacting and burning the solid fuel is injected from the first injection port 13. In the following explanation, the water injected from the first injection port 13 and stored in the storage section 112 is referred to as "stored water." The water surface 20 of the stored water in the combustion tube 11 becomes the combustion section for the generated hydrogen gas. In the following explanation, the water surface 20 is also referred to as the combustion surface 20.

[0016] The wastewater / residue discharge port 14 is a discharge port for the stored water injected from the first injection port 13 and the solid fuel residue after the reaction. A valve (not shown) is disposed in the wastewater / residue discharge port 14. When the valve is closed, a predetermined amount of stored water is stored in the combustion tube 11.

[0017] A liquid (e.g., water) is injected from the second water inlet 15. In this embodiment, the explanation will be given assuming that water is injected. The second water inlet 15 is connected to a heat exchanger 116. The water passing through the heat exchanger 116 is heated by heat obtained by the combustion of hydrogen gas.

[0018] The drain outlet 16 is an outlet for heated water (hot water). A valve (not shown) is disposed at the drain outlet 16. When the valve is closed, a predetermined amount of water is stored in the heat exchanger 116.

[0019] Incidentally, various sensors for controlling the temperature of the stored water are provided in the combustion tube 11. Specifically, the combustion tube 11 has a water temperature sensor 31, a flame temperature sensor 32, and a hydrogen generation amount detection sensor 33. The water temperature sensor 31 is disposed near the combustion surface 20. The water temperature sensor 31 measures the temperature of the water stored near the combustion surface 20. The flame temperature sensor 32 is disposed slightly above the combustion surface 20. The flame temperature sensor 32 measures the temperature of the flame generated by combustion.

[0020] The hydrogen generation amount detection sensor 33 is disposed near the combustion surface 20. The hydrogen generation amount detection sensor 33 has, for example, a Doppler sensor or an acceleration sensor. The hydrogen generation amount detection sensor 33 measures the flow rate of bubbles passing through the stored water near the combustion surface 20. The measurement results of the water temperature sensor 31 , the flame temperature sensor 32 , and the hydrogen generation amount detection sensor 33 are transmitted to the control unit 2 .

[0021] Based on the measurement results, the control unit 2 can control the flow rate of water injected from the first water inlet 13 and the amount of solid fuel injected from the fuel inlet 12. Specifically, when the temperature of the stored water is above a certain temperature, the amount of water injected from the first water inlet 13 can be increased, and the amount of water flowing out from the wastewater / residue discharge outlet 14 can be increased. This makes it possible to lower the water temperature.

[0022] When the flame temperature is high, the amount of water injected from the first water inlet 13 can be increased or the amount of solid fuel fed can be reduced. This makes it possible to lower the flame temperature. When the amount of hydrogen generated is large, the amount of solid fuel fed can be reduced. This makes it possible to reduce the amount of hydrogen generated.

[0023] The control unit 2 can also control the amount of fuel fed from the fuel inlet 12, the flow rate of water fed from the second water inlet 15, and the opening and closing of the valve of the wastewater / residue discharge port 14, etc.

[0024] Next, there will be described an example of a method of using the combustion device 1. The following processes are merely an example, and the order of some of the processes may be changed, or any process not described here may be added.

[0025] The control unit 2 injects water into the combustion tube 11 from the first water inlet 13 while closing the valve of the wastewater / residue discharge port 14. This causes a predetermined amount of stored water to be stored in the storage unit 112. The control unit 2 also injects water into the heat exchanger 116 from the second water inlet 15. Next, the control unit 2 charges the solid fuel from the fuel charging port 12. The charged solid fuel is guided to the placement unit 113 by the fuel guide 114. FIG. 5 is a diagram showing an example of the input solid fuel.

[0026] 5 shows the solid fuel 50 that has been poured in. The solid fuel 50 reacts with the stored water and releases hydrogen. At this time, a fire source is brought close to the water surface 20, and the hydrogen is combusted on the water surface 20. In addition, the water temperature sensor 31 , the flame temperature sensor 32 , and the hydrogen generation amount detection sensor 33 transmit the measurement results to the control unit 2 . Based on the detection result of the water temperature sensor 31, the control unit 2 controls the temperature of the stored water so as to maintain the temperature at, for example, 60 to 70 degrees Celsius. Furthermore, when the temperature of the hot water in the heat exchanger 116 reaches a predetermined temperature, the control unit 2 opens the valve of the drain outlet 16 to start discharging the hot water.

[0027] Furthermore, the control unit 2 controls the flow rate of water injected from the first water inlet 13 based on the measurement results of various sensors, and the amount of solid fuel injected from the fuel inlet 12 by the solid fuel injection device described above.

[0028] As described above, the combustion device 100 of the embodiment has a hot water generating unit 1 including a storage unit 112 for storing water, a placement unit 113 for placing a solid fuel that reacts with the water in the storage unit 112 to release hydrogen, and a combustion unit for combusting the generated hydrogen, and a control unit 2 for controlling the temperature of the stored water. Therefore, hydrogen can be burned safely and easily.

[0029] In the present embodiment, the case where hot water is generated by burning hydrogen has been described, but the use of the combustion device is not limited to the generation of hot water, and combustion may be used for other purposes, such as food processing equipment.

[0030] In addition, in this embodiment, the control unit 2 has been described as being integrated with the combustion apparatus 100, but it may be replaced by part of another device having a CPU or a storage unit. For example, the functions of the control unit 2 may be replaced by a desktop PC, a tablet, or a smartphone. In other words, the processing performed by the combustion apparatus 100 may be distributed among a plurality of devices.

[0031] Although the combustion device of the present invention has been described above based on the illustrated embodiment, the present invention is not limited thereto, and the configuration of each part can be replaced with any configuration having a similar function. In addition, any other configuration or process can be added to the present invention. Furthermore, the present invention may be a combination of any two or more configurations (features) of the respective embodiments described above.

[0032] The above processing functions can be realized by a computer. In this case, a program is provided that describes the processing contents of the functions possessed by the control unit 2. The above processing functions are realized on the computer by executing the program on the computer. The program describing the processing contents can be recorded on a computer-readable recording medium. Examples of computer-readable recording media include magnetic storage devices, optical disks, magneto-optical recording media, and semiconductor memories. Examples of magnetic storage devices include hard disk drives, flexible disks (FDs), and magnetic tapes. Examples of optical disks include DVDs, DVD-RAMs, and CD-ROM / RWs. Examples of magneto-optical recording media include MOs (Magneto-Optical disks).

[0033] When distributing a program, for example, the program is recorded on a portable recording medium such as a DVD or CD-ROM and then sold. The program can also be stored in a storage device of a server computer and transferred from the server computer to other computers via a network.

[0034] A computer that executes a program stores, for example, a program recorded on a portable recording medium or a program transferred from a server computer in its own storage device. The computer then reads the program from its own storage device and executes processing according to the program. The computer can also read the program directly from a portable recording medium and execute processing according to the program. The computer can also execute processing according to the received program each time a program is transferred from a server computer connected via a network.

[0035] At least a part of the above processing functions can also be realized by electronic circuits such as a digital signal processor (DSP), an application specific integrated circuit (ASIC), or a programmable logic device (PLD). [Explanation of symbols]

[0036] 1 Hot water generation section 2. Control section 11 Combustion tube 111 Lid 111a opening 112 Storage section 113 Layout section (fuel trap) 114 Fuel Guide 115 Air Intake 116 Heat exchanger 12 Fuel inlet 121 Opening 13 1st water inlet 14 Drainage / residue outlet 15 2nd water inlet 16 Drain 20 Water surface (burning surface) 31 Water temperature sensor 32 Flame temperature sensor 33 Hydrogen generation amount detection sensor 50 solid fuel 100 Combustion equipment

Claims

1. A storage section for storing liquid; a storage section disposed within the storage section for storing a fuel that is solid at room temperature and reacts with the liquid in the storage section to release hydrogen; a combustion section for combusting the generated hydrogen on the surface of the liquid in the storage section; A temperature control unit for controlling the temperature of the liquid; A combustion device comprising:

2. The combustion device according to claim 1 , wherein the temperature control section adjusts the flow rate of the liquid flowing into and out of the storage section.

3. The combustion device according to claim 1 , wherein the temperature control unit controls an amount of hydrogen produced by the reaction.

4. A fuel that is solid at room temperature and reacts with the liquid in a storage section to release hydrogen is placed in the storage section; Combusting the generated hydrogen on the surface of the liquid in the reservoir; controlling the temperature of the liquid; A combustion method comprising:

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