Combustion equipment

Abstract

A combustion device capable of controlling unburned gas through simple control and efficiently performing primary combustion of waste is provided. [Solution] A combustion chamber 7 and a combustion device 1 including the combustion chamber 7, which further comprises a bottom, side walls, and a ceiling of the combustion chamber, a gas supply pipe for sending supply gas to the combustion chamber 7, which is gas sent into the combustion chamber, an inlet portion of the combustion chamber for introducing gas including unburned gas into the combustion chamber space, and an exhaust path for discharging the combustion gas obtained by mixing the unburned gas with the supply gas to the combustion chamber and burning it in the combustion chamber space, wherein the gas supply pipe has a cylindrical main body portion having a circular or elliptical cross section inside the combustion chamber space and has a group of holes which are a plurality of holes.

Description

[Technical field]

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

[0002] Combustion devices that burn waste materials are known. The combustion devices include a plurality of combustion chambers and paths that connect the combustion chambers. The combustion devices heat the combustion gases to high temperatures while burning the waste materials, thereby preventing harmful gases from being released into the outside air (see, for example, Patent Documents 1, 2, and 3). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 7-229610 [Patent Document 2] JP 2019-020055 A [Patent Document 3] Patent Publication No. 2021-063600 Summary of the Invention [Problem to be solved by the invention]

[0004] A combustion chamber that can efficiently burn unburned gas is desired. Also, a combustion device that can improve combustion efficiency, detoxify waste, and process waste while satisfying environmental standards is desired. [Means for solving the problem]

[0005] The above problem can be solved, for example, by providing a gas supply pipe having a cylindrical main body portion with a group of holes, which is a plurality of holes, and diffusing gas from the outside while introducing it from the top to the bottom of the combustion chamber.

[0006] One of the inventions described in this specification relates to the combustion chamber 7 . The combustion chamber 7 has a combustion chamber bottom 51 , a combustion chamber sidewall 53 , and a combustion chamber ceiling 55 . The combustion chamber bottom 51, the combustion chamber sidewall 53, and the combustion chamber ceiling 55 constitute an inner combustion chamber space, which is a space enclosed by these. The combustion chamber 7 is A gas supply pipe 57 for supplying a supply gas to the combustion chamber 7, which is a gas to be sent into the combustion chamber; An introduction portion 61 of the combustion chamber for introducing gas including unburned gas into the combustion chamber space; The combustion chamber further includes an exhaust passage 63 through which the combustion gas obtained by mixing the unburned gas with the gas supplied to the combustion chamber and then burning the mixture in the space inside the combustion chamber is exhausted. The gas supply pipe 57 has, inside the combustion chamber space, a cylindrical main body 65 having a circular or elliptical cross section and having a group of holes that is a plurality of holes.

[0007] The hole group is preferably such that the plurality of holes constituting the hole group are provided at an angle of 10° to 80° with respect to the central axis of the cylindrical main body 65. Each hole constituting the hole group is preferably provided so that when the angle with the central axis of the cylindrical main body 65 increases by a predetermined angle, the hole is shifted by a predetermined distance in the longitudinal direction of the cylindrical main body 65. The combustion chamber 7 is preferably provided with a plurality of hooks 81 on the outer surface of the side wall 53 of the combustion chamber. The cylindrical main body 65 is preferably provided with a lid having a plurality of holes at the bottom. The cylindrical main body 65 is preferably provided with a plurality of lower protrusions 87 in the lower region, and the supply gas of the combustion chamber supplied to the cylindrical main body 65 is preferably discharged from the lower protrusions 87 into the combustion chamber space.

[0008] The next invention described in this specification relates to a combustion device 1 including the above-mentioned combustion chamber 7. Such a combustion device 1 is a combustion device 1 including as a tertiary combustion chamber 7, which includes a primary combustion chamber 3 and a secondary combustion chamber 5 connected to the primary combustion chamber 3, and the secondary combustion chamber 5 is preferably connected to the tertiary combustion chamber 7. The bottom 51 of the combustion chamber, the side wall 53 of the combustion chamber, the ceiling 55 of the combustion chamber, and the introduction part 61 of the combustion chamber are respectively the bottom 51 of the tertiary combustion chamber, the side wall 53 of the tertiary combustion chamber, the ceiling 55 of the tertiary combustion chamber, and the introduction part 61 of the tertiary combustion chamber, the combustion chamber space is the tertiary combustion chamber space, the gas including the unburned gas is the secondary combustion gas, and the combustion gas is the tertiary combustion gas. The vacancy group is a third vacancy group.

[0009] The primary combustion chamber 3 has a primary combustion chamber bottom 11, a primary combustion chamber side wall 13, and a primary combustion chamber ceiling 15. The primary combustion chamber bottom 11, the primary combustion chamber side wall 13, and the primary combustion chamber ceiling 15 constitute a primary combustion chamber inner space, which is a space surrounded by these. The primary combustion chamber 3 further has a primary combustion chamber outlet section 17 that enables gas to be transported to the secondary combustion chamber, and a blower pipe 19 that is provided in the space inside the primary combustion chamber and has a first group of holes that are a plurality of holes. The primary combustion chamber 3 is for discharging a primary combustion gas obtained by burning the first waste material from an outlet of the primary combustion chamber. The secondary combustion chamber 5 includes a central connecting pipe 31 that connects the outlet portion 17 of the primary combustion chamber and the tertiary combustion chamber 7, and a housing 33 of the secondary combustion chamber that surrounds the outside of the central connecting pipe 31. The central connecting pipe 31 is provided with a second group of holes that is a plurality of holes. In the secondary combustion chamber 5, the gas supplied to the secondary combustion chamber casing 33 is sent through the second group of holes into the central connecting pipe 31, and the secondary combustion gas, which is a mixture of the primary combustion gas and the gas supplied to the secondary combustion chamber, is led from the central connecting pipe 31 to the tertiary combustion chamber 7. Effect of the Invention

[0010] According to the present invention, it is possible to provide a combustion chamber capable of efficiently combusting unburned gas, and also to provide a combustion device capable of improving combustion efficiency, rendering waste harmless, and treating waste while satisfying environmental standards. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a conceptual diagram showing an example of the configuration of a combustion device. [Diagram 2] FIG. 2 is a conceptual diagram showing an example of a primary combustion chamber. [Diagram 3] FIG. 3 is a conceptual diagram showing an example of a cross-sectional view of a primary combustion chamber. [Figure 4] Fig. 4 is a conceptual diagram showing an example of an air blowing pipe. Fig. 4(a) is a conceptual diagram showing an example of an installation of an air blowing pipe. Fig. 4(b) is a diagram showing an example of a cross-section of an air blowing pipe. Fig. 4(c) is a diagram showing an example of a design of an air blowing pipe. [Diagram 5] FIG. 5 is a conceptual diagram showing an example of installation of an air blower pipe. [Figure 6] Figure 6 is a conceptual diagram showing an example of a secondary combustion chamber. Figure 6(a) shows an overall view of the secondary combustion chamber. Figure 6(b) shows a cross-sectional view of the secondary combustion chamber. [Figure 7] Figure 7 is a conceptual diagram showing an example of a housing of a secondary combustion chamber. Figure 7(a) shows a view of the housing of the secondary combustion chamber from above. Figure 7(b) is a cross-sectional view of Figure 7(a) taken along the line BB. Figure 7(c) shows a view of the secondary combustion chamber from the side. [Figure 8] Figure 8 is a conceptual diagram showing the central connecting tube of the secondary combustion chamber. Figure 8(a) is a longitudinal cross-sectional view (cross-sectional view along AA in Figure 7(a)) of the central connecting tube of the secondary combustion chamber. Figure 8(b) is a conceptual diagram of the central connecting tube of the secondary combustion chamber. Figure 8(c) is an example of a design drawing of the central connecting tube of the secondary combustion chamber. Figure 8(d) is a cross-sectional view of the central connecting tube of the secondary combustion chamber. [Figure 9]FIG. 9 is a conceptual diagram showing an example of the appearance of a tertiary combustion chamber. FIG. 9(a) shows an external view of the tertiary combustion chamber. FIG. 9(b) shows a top view of the tertiary combustion chamber. FIG. 9(c) shows a cross-sectional view of the tertiary combustion chamber (cross-sectional view along AA in FIG. 9(b)). FIG. 9(d) shows a front view of the tertiary combustion chamber. FIG. 9(e) shows a right side view of the tertiary combustion chamber. [Figure 10] Fig. 10 is a conceptual diagram for explaining the support part. Fig. 10(a) is a conceptual diagram showing the appearance of the support part. Fig. 10(b) is a diagram (top view) of the support part as seen from above. Fig. 10(b) is a cross-sectional view of the support part (cross-sectional view taken along line AA in Fig. 10(b)). Fig. 10(d) shows a front view of the support part. [Figure 11] FIG. 11 is a conceptual diagram for explaining the main body portion inside the tertiary combustion chamber. [Figure 12] Fig. 12 is a conceptual diagram for explaining an example of a cylindrical main body. Fig. 12(a) is a diagram showing the appearance of the cylindrical main body. Fig. 12(b) is a diagram showing a cylindrical portion of the cylindrical main body. Fig. 12(c) is a diagram showing a cross section of the cylindrical main body. [Figure 13] Figure 13 shows photographs in lieu of drawings showing the combustion device in the examples. Figure 13(a) is a front photograph of the combustion device. Figure 13(b) is a photograph of the combustion device taken from a different angle than Figure 13(a). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, the embodiments for carrying out the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below, and includes appropriate modifications of the embodiments described below within the scope obvious to those skilled in the art.

[0013] Combustion equipment 1 FIG. 1 is a conceptual diagram showing a configuration example of a combustion device. As shown in FIG. 1, the combustion device 1 includes, for example, a primary combustion chamber 3, a secondary combustion chamber 5 connected to the primary combustion chamber 3, and a tertiary combustion chamber 7 connected to the secondary combustion chamber 5. In this example, the combustion device 1 has three combustion chambers. However, the combustion device 1 may have any one of the combustion chambers, or may have another combustion chamber. Hereinafter, an example of the present invention will be described based on the combustion device 1 having the primary combustion chamber 3, the secondary combustion chamber 5, and the tertiary combustion chamber 7. The combustion device 1 can basically form a closed system, and each element is configured to be able to exchange gases.

[0014] The combustion device 1 includes a primary combustion chamber 3, a secondary combustion chamber 5 connected to the primary combustion chamber 3, and a tertiary combustion chamber 7 connected to the secondary combustion chamber 5. The primary combustion chamber 3 has a bottom 11, a side wall 13, and a ceiling 15 of the primary combustion chamber. The bottom 11, side wall 13, and ceiling 15 of the primary combustion chamber form a primary combustion chamber space, which is a space surrounded by these. The primary combustion chamber 3 has a primary combustion chamber outlet 17 that allows gas to be transported to the secondary combustion chamber, and a blower pipe 19 that is provided in the primary combustion chamber space and has a first group of holes that are a plurality of holes. The primary combustion chamber 3 outputs the primary combustion gas obtained by burning the first waste from the primary combustion chamber outlet 17 to the secondary combustion chamber 5.

[0015] The secondary combustion chamber 5 includes a central connecting pipe 31 that connects the outlet 17 of the primary combustion chamber and the tertiary combustion chamber 7, and a secondary combustion chamber housing 33 that surrounds the outside of the central connecting pipe 31. The central connecting pipe 31 is provided with a second group of holes that are a plurality of holes. The secondary combustion chamber supply gas, which is the gas sent to the secondary combustion chamber housing 33, is sent into the central connecting pipe 31 through the second group of holes. The primary combustion gas and the secondary combustion chamber supply gas are mixed to form a secondary combustion gas. After the primary combustion gas and the secondary combustion chamber supply gas are mixed, they may be combusted. The secondary combustion gas thus obtained is led from the central connecting pipe 31 to the tertiary combustion chamber 7.

[0016] The tertiary combustion chamber 7 has a tertiary combustion chamber bottom 51, a tertiary combustion chamber side wall 53, and a tertiary combustion chamber ceiling 55. The tertiary combustion chamber bottom 51, the tertiary combustion chamber side wall 53, and the tertiary combustion chamber ceiling 55 constitute a tertiary combustion chamber inner space, which is a space surrounded by these. The tertiary combustion chamber 7 has a gas supply pipe 57 for sending the tertiary combustion chamber supply gas, which is the gas sent into the tertiary combustion chamber, a tertiary combustion chamber introduction part 61 for introducing the secondary combustion gas into the tertiary combustion chamber space, and an exhaust passage 63. In the tertiary combustion chamber space, the secondary combustion gas and the tertiary combustion chamber supply gas are mixed and then burned. The exhaust passage 63 is an element for discharging the tertiary combustion gas obtained in this manner.

[0017] In the combustion device 1, waste (first waste) is burned in the primary combustion chamber 3. A combustion gas (primary combustion gas) containing unburned components such as carbon monoxide and hydrocarbons and air is generated in the primary combustion chamber 3. The primary combustion gas is introduced into the secondary combustion chamber 5. In the secondary combustion chamber 5, the primary combustion gas is mixed with a gas containing oxygen, or is mixed with a gas containing oxygen and then subjected to secondary combustion. In this manner, a secondary combustion gas is obtained. The secondary combustion gas is introduced into the tertiary combustion chamber 7. In the tertiary combustion chamber 7, the secondary combustion gas is mixed with a gas containing oxygen, burned, and discharged. In this manner, the combustion device 1 can, for example, render the waste harmless, or process the waste while complying with environmental standards. Examples of waste are waste tires, waste plastics, waste oil, and combustible waste. This combustion device 1 can preferably process waste tires, waste plastics, and waste oil. Each element of the combustion device 1 will be described in detail below.

[0018] Primary Combustion Chamber 3 The primary combustion chamber 3 is an element for the primary combustion of waste. When waste is burned in the primary combustion chamber 3, unburned gas (combustion gas containing unburned gas produced by incomplete combustion) is generated. If the amount (and composition) of this unburned gas is constant, it is easy to control the unburned gas. It is desirable for the primary combustion chamber 3 to stabilize the amount (and composition) of unburned gas contained in the combustion gas by a simple means.

[0019] FIG. 2 is a conceptual diagram showing an example of a primary combustion chamber. FIG. 3 is a conceptual diagram showing an example of a cross-sectional view of a primary combustion chamber. As shown in FIG. 2 and FIG. 3, the primary combustion chamber 3 has a bottom 11 of the primary combustion chamber, a side wall 13 of the primary combustion chamber, and a ceiling 15 of the primary combustion chamber. The primary combustion chamber 3 has a primary combustion chamber space that is a space surrounded by the bottom 11 of the primary combustion chamber, the side wall 13 of the primary combustion chamber, and the ceiling 15 of the primary combustion chamber. The primary combustion chamber 3 further has a primary combustion chamber outlet 17 and a blower pipe 19. The primary combustion chamber outlet 17 is an element for enabling gas to be discharged from the primary combustion chamber space to the outside (outside the primary combustion chamber 3). When the combustion device 1 has a secondary combustion chamber 5 connected to the primary combustion chamber 3, the primary combustion chamber outlet 17 is an element for discharging the combustion gas in the primary combustion chamber space to the secondary combustion chamber 5. As shown in Fig. 2, the primary combustion chamber 3 may have a first input port 21. As shown in Fig. 3, the lower part of the side wall 13 of the primary combustion chamber preferably has an inclined wall 23. The material and size of the primary combustion chamber may be appropriately adjusted depending on the waste. An example of the volume of the space inside the primary combustion chamber is 1 x 10 m. 3 More than 1×10 4 m 3 is less than or equal to 1 x 10 2 m 3 5×10 or more 3 m 3 Less than 5×10 is fine. 2 m 3 More than 3×10 3 m 3 The primary combustion chamber 3 may have an intake port (not shown). The primary combustion chamber 3 may have a fuel supply (not shown) for supplying fuel into the primary combustion chamber.

[0020] 1st input port 21 The first input port 21 is an element for opening and closing the primary combustion chamber 3. When the first input port 21 is in an open state, waste can be input into the space inside the primary combustion chamber. Usually, waste is combusted in the primary combustion chamber 3 with the first input port 21 closed. An example of the first input port 21 is an openable and closable door. The first input port 21 may be configured to allow additional waste to be input into the primary combustion chamber 3 even when the primary combustion chamber 3 is in the process of burning waste.

[0021] Primary combustion chamber outlet 17 An example of the outlet part 17 of the primary combustion chamber may be a hole provided in the side wall 13 of the primary combustion chamber, or a conduit connected to a hole in the side wall 13 of the primary combustion chamber. The center part of the outlet part 17 of the primary combustion chamber is preferably present at a position that is 15% to 45% (preferably 20% to 40%, more preferably 25% to 35%) of the height of the side wall of the primary combustion chamber (from the bottom surface to the ceiling of the primary combustion chamber 3). The position of the outlet part 17 of the primary combustion chamber may be movable (adjustable) within the above range. The center part of the outlet part 17 of the primary combustion chamber means the position of the center of gravity of the outlet part 17 of the primary combustion chamber, and for example, when the outlet part 17 of the primary combustion chamber is a round hole, it means the center of the circle. As a result of numerous trials and errors, it was found that it is preferable for the take-out part of the primary combustion gas to be present slightly below the center of the primary combustion chamber. The temperature inside the combustion chamber is the highest at the top. For this reason, the combustion gas is usually taken out from the top of the combustion chamber. On the other hand, this preferable primary combustion chamber 3 can stably discharge unburned gas by providing the discharge portion 17 slightly below the center of the side wall 13 of the primary combustion chamber.

[0022] Blower pipe 19 The blower pipe 19 is an element provided in the primary combustion chamber inner space and has a first group of holes. The blower pipe 19 guides gas from the first group of holes to the primary combustion chamber inner space. In the example of FIG. 3, two pipes with holes function as the blower pipe 19.

[0023] FIG. 4 is a conceptual diagram showing an example of an air blowing pipe. FIG. 4(a) is a conceptual diagram showing an example of an installation of an air blowing pipe. FIG. 4(b) is a diagram showing an example of a cross-sectional view of an air blowing pipe. FIG. 4(c) is a diagram showing an example of a design of an air blowing pipe. As shown in FIG. 4(a), the air blowing pipe 19 is preferably located below the outlet portion 17 of the primary combustion chamber and away from the bottom 11 of the primary combustion chamber. However, the efficiency of primary combustion is better if the air blowing pipe 19 is not away from the bottom 11 of the primary combustion chamber, so the air blowing pipe 19 does not have to be away from the bottom 11 of the primary combustion chamber. If the air blowing pipe 19 is located away from the bottom 11 of the primary combustion chamber, it becomes easier to remove residue at the bottom, and the primary combustion chamber 3 is easier to clean. In the example of FIG. 4(a), the air blowing pipe 19 is cylindrical. However, the shape of the air blowing pipe 19 is not limited to cylindrical. The air blowing pipe 19 has a first group of holes. In the example shown in FIG. 4(b), holes are provided on the top, bottom, left and right of the air blowing pipe 19. However, as a result of theoretical calculations on the air blowing pipe 19, it was found that holes are provided in three directions, the top, left and right, of the air blowing pipe 19, because the combustion efficiency is higher. In this case, the left and right holes may be shifted by 90° from the upper hole, or may be shifted by 60° to 120°, or may be shifted by 60° to 90°, or may be shifted by 75° to 105°, or may be shifted by 75° to 90°. The holes are preferably circular or elliptical. The diameter of the holes (the length of the major axis when the holes are elliptical; the same applies below) is 1 mm or more and 1 cm or less, may be 2 mm or more and 6 mm or less, or may be 3 mm or more and 5 mm or less. In the example shown in FIG. 4(c), the holes are provided at intervals of 5 cm in the longitudinal direction of the air blowing pipe. This interval may be 5 mm to 50 cm, 3 cm to 25 cm, 2 cm to 20 cm, or 3 cm to 10 cm. The diameter of the upper hole of the blower pipe 19 may be 1.1 to 5 times, 1.2 to 3 times, 1.5 to 3 times, or 1.5 to 2 times the diameter of the lower hole. By reducing the size of the lower hole in this way, the gas can be effectively sent into the primary combustion chamber.In addition, the left and right holes may be positioned above the center of the pipe, and the diameters of the left and right holes may be 1.1 to 5 times, 1.2 to 3 times, 1.5 to 3 times, or 1.5 to 2 times the diameter of the lower hole.

[0024] FIG. 5 is a conceptual diagram showing an example of the installation of the air blowing pipe. FIG. 5(a) is a diagram showing the lower region of the primary combustion chamber 3. FIG. 5(b) is a diagram showing the side of the primary combustion chamber 3. As shown in FIG. 5, the air blowing pipe 19 is preferably one that can adjust the air blowing amount by a valve 25 (air amount adjustment mechanism) provided outside the primary combustion chamber. The piping may be connected by a suitable flange. In the example of FIG. 5, the first gas introduction passage 29 (e.g., piping) connected to the first gas supply unit 27 (not shown) and the air blowing pipe 19 are connected via the valve 25. Examples of the first gas supply unit 27 are a blower and a compressor. The first gas supply unit 27 is preferably one having a heating mechanism. When the first gas supply unit 27 has a heating mechanism, heated outside air can be introduced into the air blowing pipe 19. The heating mechanism may be provided in the first gas introduction passage 29. The outside air preferably contains oxygen. The first gas supply unit 27 may be an open end. In this case, the first gas supplying section 27 functions as an intake port. The primary combustion chamber 3 may have an intake port as appropriate. The amount of gas supplied into the primary combustion chamber 3 can be adjusted as appropriate by the valve (gate) 25. This combustion device can control the amount and composition of unburned gas discharged from the primary combustion chamber by adjusting the amount of gas supplied into the primary combustion chamber 3 by the valve 25 in this manner. One of the reasons why such control is possible is that the position of the discharge section 17 of the primary combustion chamber is different from that of the conventional one. The first gas supplying section 27 may supply a gas other than outside air (for example, oxygen) to the primary combustion chamber 3. The amount of air supplied to the primary combustion chamber 3 may be adjusted using a known air amount adjustment mechanism other than the valve 25.

[0025] Slanted wall 23 As shown in Fig. 3, the lower part of the side wall 13 of the primary combustion chamber preferably has an inclined wall 23. An example of the angle between the bottom 11 of the primary combustion chamber and the inclined wall 23 is preferably 45° or more and 80° or less, and may be 55° or more and 70° or less. Since the primary combustion chamber 3 has the inclined wall 23, the waste is placed near the blower pipe 19, and the waste can be burned efficiently.

[0026] Example of operation of primary combustion chamber 3 The first input port 21 is opened to an open state. Then, waste is input from the first input port 21 into the primary combustion chamber inner space. The waste is ignited, and the first input port 21 is closed to a closed state. Note that fuel may be supplied together with the waste, and the fuel may be ignited. The first gas supply unit 27 heats outside air, and sends it to the air blowing pipe 19 via the first gas introduction passage 29. For example, the temperature of the heated outside air may be 30°C or higher and 60°C or lower, or 30°C or higher and 50°C or lower. The amount of air supplied by the first gas supply unit 27 may be adjusted as appropriate, and may be as low as 0.01 m 3 / min more than 10m 3 / min or less, or 0.1m 3 / min or more 1m 3 / min or less, or 0.1m 3 / min or more 0.5m 3 The airflow discharged from the blower pipe 19 is preferably a laminar flow. When the waste material is burned and the combustion gas (gas containing unburned gas) reaches a temperature of, for example, 150°C to 300°C, the gas becomes stable.

[0027] In a preferred example of the primary combustion chamber 3, the discharge part 17 is provided slightly below the center of the primary combustion chamber, so that the unburned gas can be discharged stably. For example, when tires are waste, one tire can usually be incinerated in about 15 minutes. The primary combustion chamber 3 burns the tires for, for example, 0.5 to 5 hours (preferably 1 to 3 hours) per tire. This example of the combustion device has the advantage that the amount of unburned gas (the amount and composition) contained in the combustion gas (primary combustion gas) discharged from the primary combustion chamber can be controlled by adjusting the amount of gas supplied into the primary combustion chamber 3 by the valve 25. The combustion gas is discharged from the primary combustion chamber space to the outside via the discharge part 17 of the primary combustion chamber. When the combustion device 1 has a secondary combustion chamber 5 connected to the primary combustion chamber 3, the primary combustion gas in the primary combustion chamber space is discharged to the secondary combustion chamber 5 via the discharge part 17 of the primary combustion chamber. A preferred example of the primary combustion chamber 3 is one in which the position of the outlet portion 17 of the primary combustion chamber is adjusted to give it a shape that can discharge a constant amount of gas, thereby generating stable unburned gas (primary combustion gas), and further making it possible to control the amount of unburned gas solely by the amount of air supplied.

[0028] The primary combustion chamber 3 can be used as a heat source or a heating device. By connecting piping to the periphery of the primary combustion chamber 3, it can be used for heating. Also, by connecting piping containing liquid to the primary combustion chamber 3, it can be used for heating.

[0029] Secondary Combustion Chamber 5 The secondary combustion chamber 5 is a combustion chamber connected to the primary combustion chamber 3. The secondary combustion chamber 5 is an element for mixing the primary combustion gas (including unreacted gas) discharged from the primary combustion chamber with a gas containing oxygen, or for secondary combustion of the primary combustion gas after mixing with a gas. The secondary combustion chamber 5 is preferably connected to the tertiary combustion chamber 7. The primary combustion gas combusted in the secondary combustion chamber 5 is discharged to the tertiary combustion chamber 7 as a secondary combustion gas. The state in which the primary combustion gas is mixed with a gas containing oxygen is also included in the combustion of the primary combustion gas. The primary combustion gas is a highly concentrated unburned gas. Therefore, if the primary combustion gas is directly burned, unburned gas tends to remain. For this reason, the secondary combustion chamber 5 is intended to supply oxygen to the primary combustion gas to make it into a gas (secondary combustion gas) that is easily combusted completely.

[0030] FIG. 6 is a conceptual diagram showing an example of a secondary combustion chamber. FIG. 6(a) shows an overall view of the secondary combustion chamber. FIG. 6(b) shows a cross-sectional view of the secondary combustion chamber. As shown in FIG. 6, the secondary combustion chamber 5 includes a central connecting pipe 31 and a secondary combustion chamber housing 33 that surrounds the outside of the central connecting pipe 31. In the example of FIG. 6, the secondary combustion chamber has a double structure of two conduits. In the example shown in FIG. 6, the secondary combustion chamber 5 is installed laterally (at the same height) as the primary combustion chamber 3.

[0031] Secondary combustion chamber housing 33 FIG. 7 is a conceptual diagram showing an example of the housing of the secondary combustion chamber. FIG. 7(a) shows a view of the housing of the secondary combustion chamber seen from above. FIG. 7(b) is a BB cross-sectional view of FIG. 7(a). FIG. 7(c) is a view of the secondary combustion chamber seen from the side. The housing 33 of the secondary combustion chamber is preferably connected to a second gas introduction passage 37 (e.g., a pipe) connected to the second gas supply unit 35. Examples of the second gas supply unit 35 are a blower and a compressor. The gas supplied from the second gas supply unit 35 is introduced into the housing 33 of the secondary combustion chamber through the second gas introduction passage 37. The second gas supply unit 35 preferably has a heating mechanism. When the second gas supply unit 35 has a heating mechanism, heated outside air can be introduced into the housing 33 of the secondary combustion chamber. The heating mechanism may be provided in the second gas introduction passage 37. The second gas supply unit 35 may supply a gas other than outside air (e.g., oxygen). A valve (gate) 39 may be present between the second gas introduction passage 37 and the second gas supply section 35. The amount of gas supplied into the secondary combustion chamber 5 can be appropriately adjusted by the valve 39. In this manner, this combustion device can adjust the amount of gas supplied into the secondary combustion chamber 5 by the valve 39. The amount of air supplied to the secondary combustion chamber 5 may be adjusted by using a known air amount adjustment mechanism other than the valve 39. Both ends of the housing 33 of the secondary combustion chamber are designed to be located inside the connection parts present in the both end regions of the central connecting pipe 31. This prevents the gas introduced from the second gas supply part 35 from leaking outside the housing 33 of the secondary combustion chamber. The shape of the housing 33 of the secondary combustion chamber is preferably a shape in which the main body is cylindrical and the second gas introduction passage 37 is connected as a branch to a part of the side. The diameter of the housing 33 of the secondary combustion chamber is, for example, 80 mm or more and 500 mm or less, or may be 40 mm or more and 300 mm or less, 100 mm or more and 300 mm or less, or may be 80 mm or more and 200 mm or less. The length of the housing 33 of the secondary combustion chamber in the longitudinal direction may be 50 mm or more and 800 mm or less, or may be 50 mm or more and 800 mm or less, or may be 100 mm or more and 600 mm or less, or may be 200 mm or more and 600 mm or less, or may be 150 mm or more and 500 mm or less.

[0032] Center connecting pipe 31 FIG. 8 is a conceptual diagram showing the central connecting pipe of the secondary combustion chamber. FIG. 8(a) is a longitudinal cross-sectional view (AA cross-sectional view of FIG. 7(a)) of the central connecting pipe of the secondary combustion chamber. FIG. 8(b) is a conceptual diagram of the central connecting pipe of the secondary combustion chamber. FIG. 8(c) is an example of a design drawing of the central connecting pipe of the secondary combustion chamber. FIG. 8(d) is a cross-sectional view of the central connecting pipe of the secondary combustion chamber. The central connecting pipe 31 is, for example, an element for connecting the outlet part 17 of the primary combustion chamber and the tertiary combustion chamber. The central connecting pipe 31 is provided with a plurality of holes (a second group of holes) for taking in gas from the housing 33 of the secondary combustion chamber into the central connecting pipe 31. In the example shown in FIG. 8(a), the left end of the central connecting pipe 31 has a connecting part 41 with the outlet part 17 of the primary combustion chamber 3. In the example shown in FIG. 8(a), the right end of the central connecting pipe 31 has a connecting part 43 with the tertiary combustion chamber 7 (the inlet part 61).

[0033] The second group of holes is preferably provided so that the airflow into the central connecting pipe 31 draws a spiral (toward the tertiary combustion chamber 7). For example, the direction from the outer wall to the inner wall of the central connecting pipe 31 of each of the holes may be from the left to the right in the drawing (from the primary combustion chamber 3 side to the tertiary combustion chamber 7). The diameter of the example of the hole may be 1 mm or more and 1 cm or less, or 2 mm or more and 6 mm or less. Also, as shown in FIG. 8(b) and FIG. 8(c), the second group of holes may be provided in the upper, lower, left and right regions of the central connecting pipe 31. In this example, when the angle (θ) between the central axis of the central connecting pipe 31 and the hole increases by a predetermined angle (90°), the position of the hole is shifted by a predetermined distance (for example, 3 mm or more and 3 cm or less, 5 mm or more and 2 cm or less) in the longitudinal direction of the central connecting pipe 31. In other words, each of the holes constituting the second group of holes is disposed so that when the angle between the hole and the central axis of the central connecting pipe 31 increases by a certain angle, the hole is shifted by a certain distance in the longitudinal direction of the central connecting pipe 31. The positions of the holes are such that, when adjacent holes are smoothly connected to each other, a spiral shape is formed. In this way, the air flow into the inside of the central connecting pipe 31 draws a spiral.

[0034] As shown in FIG. 8(d), the second hole group is preferably such that the plurality of holes constituting the second hole group are provided at an angle with respect to the central axis of the central connecting tube 31. A perpendicular line is drawn from the center of each hole to the central axis of the central connecting tube 31. Next, the central axis of each hole (the longitudinal direction of the hole (the direction of travel of the hole)) is drawn. The angle (θ) between the perpendicular line and the central axis is the angle that the hole makes with the central axis of the central connecting tube 31. In the example of FIG. 4(b), this angle was 0° (although the one shown in FIG. 4(b) may also have an angle as shown in FIG. 8(d)). It is preferable that the angle between the perpendicular line and the central axis of the second hole group is an angle (other than 0°) so that the airflow into the inside of the central connecting tube 31 draws a spiral. Specific examples of the angle are 10° or more and 80° or less, 20° or more and 70° or less, 30° or more and 60° or less, or 30° or more and 50° or less.

[0035] Example of operation of secondary combustion chamber 5 The primary combustion gas contains a high concentration of unburned gas, so the secondary combustion chamber 5 mixes the primary combustion gas with a gas such as oxygen. The primary combustion gas is introduced into the central connecting pipe 31 from the outlet 17 of the primary combustion chamber. The second gas supply unit 35 heats the outside air and sends it to the housing 33 of the secondary combustion chamber through the second gas introduction passage 37. The outside air may be heated. For example, the temperature of the outside air supplied from the second gas supply unit 35 may be 0°C or higher and 60°C or lower, 30°C or higher and 60°C or lower, or 30°C or higher and 50°C or lower. The amount of air supplied by the second gas supply unit 35 may be appropriately adjusted and may be as low as 0.01 m. 3 / min more than 10m 3 / min or less, or 0.1m 3 / min or more 1m 3 / min or less, or 0.1m 3 / min or more 0.5m 3 / min or less. The heated outside air sent from the second gas supply unit 35 is introduced into the inside of the central connecting pipe 31 through the housing 33 of the secondary combustion chamber and the second group of holes. At this time, in a preferred example, the air flow into the inside of the central connecting pipe 31 draws a spiral proceeding toward the tertiary combustion chamber 7. In this way, the supply gas (oxygen or outside air) of the secondary combustion chamber, which is the gas sent to the housing 33 of the secondary combustion chamber, is sent into the central connecting pipe 31 through the second group of holes, and becomes a secondary combustion gas, which is a gas in which the primary combustion gas and the supply gas (oxygen or outside air) of the secondary combustion chamber are mixed, and the secondary combustion gas is led out from the central connecting pipe 31 to the tertiary combustion chamber. In this way, the combustion efficiency in the tertiary combustion chamber is dramatically improved.

[0036] Tertiary Combustion Chamber 7 FIG. 9 is a conceptual diagram showing an example of the appearance of a tertiary combustion chamber. FIG. 9(a) shows an external view of the tertiary combustion chamber. FIG. 9(b) shows a top view of the tertiary combustion chamber. FIG. 9(c) shows a cross-sectional view of the tertiary combustion chamber (cross-sectional view along AA in FIG. 9(b)). FIG. 9(d) shows a front view of the tertiary combustion chamber. FIG. 9(e) shows a right side view of the tertiary combustion chamber. As shown in FIG. 9, the tertiary combustion chamber 7 has a bottom 51 of the tertiary combustion chamber, a side wall 53 of the tertiary combustion chamber, and a ceiling 55 of the tertiary combustion chamber. The space surrounded by the bottom 51 of the tertiary combustion chamber, the side wall 53 of the tertiary combustion chamber, and the ceiling 55 of the tertiary combustion chamber constitutes a tertiary combustion chamber space. The tertiary combustion chamber 7 further has a gas supply pipe 57, an inlet 61 of the tertiary combustion chamber, and an exhaust passage 63. The gas supply pipe 57 is an element for sending a supply gas of the tertiary combustion chamber, which is a gas sent into the tertiary combustion chamber. The inlet 61 of the tertiary combustion chamber is an element for introducing a secondary combustion gas into the tertiary combustion chamber space. The exhaust passage 63 is an element for discharging the tertiary combustion gas. The tertiary combustion gas is a combustion gas obtained by mixing the secondary combustion gas and the supply gas of the tertiary combustion chamber in the tertiary combustion chamber space and then burning it. The tertiary combustion chamber 7 may have a tertiary combustion chamber main body part 71 and a support part 73 that supports the tertiary combustion chamber main body part 71. When these are joined together, an internal space is formed. This internal space may be the tertiary combustion chamber space. It is desirable for the tertiary combustion chamber to completely combust unburned gas, and therefore it is desirable to improve the combustion efficiency of the tertiary combustion chamber.

[0037] Support part 73 Fig. 10 is a conceptual diagram for explaining the support part. Fig. 10(a) is a conceptual diagram showing the appearance of the support part. Fig. 10(b) is a diagram (top view) of the support part as seen from above. Fig. 10(b) is a cross-sectional view of the support part (cross-sectional view taken along line AA in Fig. 10(b)). Fig. 10(d) shows a front view of the support part. As shown in FIG. 10, in this example, the introduction part 61 of the tertiary combustion chamber is provided on the right side surface of the support part 73. In the example shown in FIG. 10, the bottom part 51 of the tertiary combustion chamber has a curved shape. This is to collect the fuel injected into the bottom part 51 of the tertiary combustion chamber in the central region of the bottom part 51 of the tertiary combustion chamber. In the example shown in FIG. 10, the support part 73 has a fuel supply part 75. In the example shown in FIG. 10, the fuel supply part 75 is present in the center of the bottom part of the tertiary combustion chamber. However, the fuel supply part 75 may be provided at another position of the tertiary combustion chamber. The fuel supplied by the fuel supply part 75 may be liquid fuel or gaseous fuel. Note that a gas introduction part or an intake port for introducing gas may be provided at the position of the fuel supply part 75 (the center of the bottom part of the bottom part 51 of the tertiary combustion chamber).

[0038] In the example of FIG. 10, a preliminary gas introduction part 77 for introducing gas into the support part 73 is present. The preliminary gas introduction part 77 is an optional element and may not be present. The preliminary gas introduction part 77 may also be present in the tertiary combustion chamber main body part 71. The tertiary combustion chamber main body part 71 may also be present in both the support part 73 and the tertiary combustion chamber main body part 71. The preliminary gas introduction part 77 may be connected to the gas supply pipe 57 via a valve, and the gas supplied into the gas supply pipe 57 may be introduced into the tertiary combustion chamber 7 through the preliminary gas introduction part 77. The amount of gas introduced from the preliminary gas introduction part 77 into the tertiary combustion chamber 7 may be adjusted by a valve. In the example of FIG. 10, a second input port 79 is present. The second input port 79 is an element for opening and closing the tertiary combustion chamber 7. When the second input port 79 is in an open state (open state), an object can be input into the third combustion chamber space. Furthermore, when the second inlet 79 is in an open state, residues present in the tertiary combustion chamber 7 can be disposed of. When the tertiary combustion chamber 7 is in a combustion state, the second inlet 79 is usually in a closed state (closed state). An example of the second inlet 79 is an openable / closable door. With the second inlet 79 in an open state, solid fuel or liquid fuel may be introduced into the tertiary combustion chamber 7. Furthermore, with the second inlet 79 in an open state, a second waste material may be introduced into the tertiary combustion chamber 7. An example of the second waste material is waste oil.

[0039] Tertiary combustion chamber main body 71 FIG. 11 is a conceptual diagram for explaining the tertiary combustion chamber body. As shown in FIG. 11, the tertiary combustion chamber body 71 includes a roughly cylindrical portion and an exhaust passage 63 present at the upper portion thereof. The tertiary combustion chamber body 71 is connected to a gas supply pipe 57, so that the gas supplied from the gas supply pipe 57 is introduced into the tertiary combustion chamber 7. In the example shown in FIG. 11, the gas supply pipe 57 is introduced into the tertiary combustion chamber 7 through the upper portion of the tertiary combustion chamber body 71. In the example shown in FIG. 11, a plurality of hooks 81 are provided on the outer surface of the tertiary combustion chamber body 71. By having the plurality of hooks 81 in the tertiary combustion chamber 7, it is possible to easily install piping surrounding the tertiary combustion chamber body 71. It is preferable that the tertiary combustion chamber 7 is provided with piping surrounding the tertiary combustion chamber body 71, so that the tertiary combustion chamber 7 can be cooled. The liquid in the piping warmed by the tertiary combustion chamber 7 can be used for heating. The hooks 81 are preferably provided at predetermined intervals at a predetermined height of the tertiary combustion chamber main body 71. In the example of Fig. 11, the hooks 81 are provided at 90° intervals at three different height positions on the outer periphery of the tertiary combustion chamber main body 71.

[0040] Gas supply pipe 57 The gas supply pipe 57 is an element for sending a supply gas for the tertiary combustion chamber, which is a gas sent into the tertiary combustion chamber. The gas supply pipe 57 may be connected to a third gas supply unit (not shown). Examples of the third gas supply unit are a blower and a compressor. The third gas supply unit preferably has a heating mechanism. When the third gas supply unit has a heating mechanism, heated outside air can be introduced into the tertiary combustion chamber. The heating mechanism may be provided in the gas supply pipe 57. The outside air preferably contains oxygen.

[0041] As shown in FIG. 9(c), the gas supply pipe 57 has a portion that exists outside the tertiary combustion chamber 7 and is connected to the third gas supply unit. Also, as shown in FIG. 9(c), the gas supply pipe 57 has a cylindrical main body portion 65 that is installed vertically inside the tertiary combustion chamber 7. As shown in FIG. 9(c), the gas supply pipe 57 has a connection portion that connects the portion of the gas supply pipe 57 that exists outside the tertiary combustion chamber 7 and the upper portion of the cylindrical main body portion 65. In this example, the gas supplied from the third gas supply unit is introduced into the tertiary combustion chamber 7 via the gas supply pipe 57. To be more specific, the gas supplied from the upper portion of the cylindrical main body portion 65 is discharged from the lower portion of the cylindrical main body portion 65 via the cylindrical main body portion 65. As described later, when the cylindrical main body 65 has the third group of holes, the gas is introduced into the tertiary combustion chamber 7 from the third group of holes when it advances from the upper part to the lower part of the cylindrical main body 65. The cylindrical main body 65 preferably has a circular or elliptical cross section. An example of the length of the cylindrical main body 65 is 40 cm or more and 5 m or less, and may be 70 cm or more and 3 m or less, or 1 m or more and 2 m or less. An example of the diameter of the cylindrical main body 65 is 3 cm or more and 40 cm or less, and may be 5 cm or more and 30 cm or less, or 5 cm or more and 25 cm or less. The shape of the cylindrical main body 65 is not limited to a cylindrical shape, but a cylindrical shape is preferable.

[0042] Cylindrical main body 65 Fig. 12 is a conceptual diagram for explaining an example of a cylindrical main body. Fig. 12(a) is a diagram showing the appearance of the cylindrical main body. Fig. 12(b) is a diagram showing a cylindrical portion of the cylindrical main body. Fig. 12(c) is a diagram showing a cross section of the cylindrical main body. 12(a), two handles 85 are formed in the upper region of the cylindrical main body 65. In this example, two handles 85 are also formed in the middle region of the cylindrical main body 65. Since the cylindrical main body 65 has the handles, it becomes easier to install the cylindrical main body 65, and it becomes easier to fine-tune the cylindrical main body 65 after it is installed. A lid having a plurality of holes is preferably provided at the bottom of the cylindrical body 65. The holes provided in the lid may be similar to the holes in the third group of holes. With such a lid, the gas supplied to the cylindrical body 65 is released from the lower part of the cylindrical body 65 into the tertiary combustion chamber. In the example shown in FIG. 12(a), four lower protrusions 87 are formed at 90° intervals on the lower part of the cylindrical main body 65 in order to adjust the airflow. The inside of the lower protrusion 87 is preferably hollow, and a plurality of holes are preferably provided on the side of the lower protrusion 87. When such a lower protrusion 87 is provided, gas is also discharged from the lower protrusion 87, so that the airflow in the tertiary combustion chamber can be controlled. The position at which the lower protrusion 87 is provided may be offset from the handle 85 (for example, offset by 45°). Since the lower protrusion 87 and the handle 85 are present in such a position, the gas discharged from the lower protrusion 87 is easily circulated. In this way, the combustion efficiency of the tertiary combustion chamber 7 is improved.

[0043] The third group of holes is preferably provided so as to be discharged from the cylindrical main body 65 into the internal space of the tertiary combustion chamber at an angle. In other words, it is preferable that the gas discharged from the cylindrical main body 65 is discharged into the internal space of the tertiary combustion chamber at an angle with the direction away from the center of the cylindrical main body 65, rather than proceeding straight in the direction away from the center of the cylindrical main body 65. An example of the diameter of the hole is 1 mm or more and 1 cm or less, and may be 2 mm or more and 6 mm or less. Also, as shown in FIG. 12(b), the third group of holes may be provided in the front, rear, left and right regions of the cylindrical main body 65. In this example, when the angle between the central axis of the cylindrical main body 65 and the hole increases by a predetermined angle (90°), the position of the hole is shifted by a predetermined distance (for example, 3 mm or more and 5 cm or less, 3 mm or more and 3 cm or less, 5 mm or more and 10 cm or less, or 5 mm or more and 2 cm or less) in the longitudinal direction of the cylindrical main body 65. That is, each of the holes constituting the third group of holes is arranged so that when the angle between the central axis of the cylindrical main body 65 and the hole increases by a certain angle, the hole is shifted by a certain distance in the longitudinal direction of the cylindrical main body 65. The positions of the holes are arranged so that when adjacent holes are smoothly connected to each other, a spiral shape is formed. In this way, the airflow of the gas discharged from the cylindrical main body 65 into the internal space of the tertiary combustion chamber 7 rotates. In this way, the combustion efficiency of the tertiary combustion chamber 7 is improved.

[0044] As shown in FIG. 12(c), the third hole group is preferably one in which the plurality of holes constituting the third hole group are provided at an angle with respect to the central axis of the cylindrical main body 65. A perpendicular line is drawn from the center of each hole to the central axis of the cylindrical main body 65. Next, the central axis of each hole (the longitudinal direction of the hole (the direction of travel of the hole)) is drawn. The angle between the perpendicular line and the central axis is the angle that the hole makes with the central axis of the cylindrical main body 65. The third hole group is preferably one in which the angle between the perpendicular line and the central axis has an angle (other than 0°) so that the gas flow discharged from the cylindrical main body 65 swirls. A specific example of the angle is 10° or more and 80° or less, and may be 20° or more and 70° or less, 30° or more and 60° or less, or 30° or more and 50° or less. In this way, the combustion efficiency of the tertiary combustion chamber 7 is improved.

[0045] Example of operation of the tertiary combustion chamber 7 The secondary combustion gas is introduced into the tertiary combustion chamber space via the introduction part 61 of the tertiary combustion chamber. The introduction part 61 of the tertiary combustion chamber is provided at the bottom of the tertiary combustion chamber 7. Therefore, the secondary combustion gas is supplied to the bottom of the tertiary combustion chamber 7. The third gas supply unit heats the supply gas (oxygen or outside air) and introduces the supply gas into the tertiary combustion chamber via the gas supply pipe 57. The temperature of the supply gas may be, for example, 30°C to 60°C, or 30°C to 50°C. The amount of air supplied by the third gas supply unit can be adjusted as appropriate, and is preferably 0.5 m 3 / min or more than 50m 3 / min or less, or 1m 3 / min or more 20m 3 / min or less, or 1m 3 / min or more 15m 3 / min or less, or 2m 3 / min more than 10m 3 / min or less. The supply gas is introduced into the tertiary combustion chamber from the cylindrical body 65 of the gas supply pipe 57. For example, the supply gas is discharged in a swirling manner through a third group of holes provided on the side surface of the cylindrical body 65. The supply gas is also discharged below the cylindrical body 65 through a plurality of holes in a lid provided on the bottom surface of the cylindrical body 65. Furthermore, the supply gas is discharged, for example, in the up, down, left and right directions through the lower protrusion 87. In this way, the supply gas is introduced into the tertiary combustion chamber to form a preferable airflow. The fuel supply unit 75 appropriately supplies liquid fuel into the tertiary combustion chamber. In addition, a heated gas may be appropriately supplied to the lower part of the tertiary combustion chamber. It is preferable to introduce a gas containing oxygen into the center of the fire source and cause it to explode and burn at a high temperature. In this way, the secondary combustion gas can be burned to produce tertiary combustion gas, and unburned gas can be completely burned to render it harmless, allowing waste to be treated while complying with environmental standards. The harmless tertiary combustion gas is discharged to the outside via the exhaust path 63. Various filters may be provided in the exhaust path 63. Furthermore, a sensor may be provided in the exhaust path 63. If a sensor is provided in the exhaust path 63, various controls can be automated using machine learning. For such automatic control, for example, a trained model may be constructed using the supply amounts and sensing information of various supply gases as teacher data. Then, the sensing information measured by the sensor is input to the trained model. Then, the control unit can automatically control various supply units (for example, each gas supply unit and fuel supply unit) and valves to appropriately treat the waste. Furthermore, the accuracy of machine learning can be improved by feeding back the data processed in this way to the trained model. EXAMPLES

[0046] A combustion device with primary, secondary and tertiary combustion chambers was actually manufactured. Figure 13 shows photographs in lieu of drawings showing the combustion device in the examples. Figure 13(a) is a front photograph of the combustion device. Figure 13(b) is a photograph of the combustion device taken from a different angle than Figure 13(a). The primary combustion chamber was designed to extract a fixed amount of gas. This allowed for a stable generation of unburned gas, and the amount of unburned gas could be controlled by the amount of air alone. The volume of the primary combustion chamber was approximately 900 m. 3 Two pipes are placed at the bottom of the primary combustion chamber, and holes of about 3 mm in diameter are provided at appropriate intervals of 50 mm in the pipes. The surrounding heated air of about 40°C is introduced into the pipes at a flow rate of 0.2 m. 3 The fuel was burned at 100 to 500°C (or 150°C to 350°C) at which synthesis gas could be extracted, and extracted from the center of the primary combustion chamber where the primary combustion gas components were stable. In this way, the primary combustion gas could be extracted stably. One tire could be burned for about two hours.

[0047] The primary combustion gas is a dense unburned gas. For this reason, it is further mixed with air (oxygen) in the secondary combustion chamber. The primary combustion gas is taken out horizontally. The secondary combustion chamber has a double structure, with an outer pipe: inner pipe ratio of approximately 3:2, and air is taken in from the outer pipe to the inner pipe. The surrounding heated air of approximately 40°C is pumped in at a depth of 0.2m. 3 / min and gradually sent out from the holes. In order to create a mixed gas that is easy to burn, small holes with a diameter of about 3 mm were placed in the inner pipe at a pitch of 40 mm and inclined at about 40 degrees from the center in a spiral shape, and air at about 40°C was taken in from the outer pipe to create a secondary combustion or mixed gas with air in the flue. In this way, secondary combustion gas was obtained.

[0048] A round pipe is placed vertically in the center of the tertiary combustion chamber, and holes of about 3 mm in diameter are placed in a spiral pattern at 50 mm pitch and about 40° to the center, and outside air is drawn in for 4 m. 3 / min, and secondary combustion gas was taken in from below to create tertiary combustion. Air was pumped into the center of the fire source, causing it to explode and burn at high temperature. This allowed the unburned gas to be completely burned, and odors, smoke, and harmful substances to be neutralized. By creating angled holes in the round pipe, resistance in the spiral direction was reduced, improving combustion efficiency. [Industrial Applicability]

[0049] The present invention can be used in fields such as waste treatment, boilers, and generators. [Explanation of symbols]

[0050] 1 Combustion equipment 3 Primary Combustion Chamber 5 Secondary Combustion Chamber 7. Tertiary Combustion Chamber 11 Bottom of primary combustion chamber 13 Primary combustion chamber side wall 15 Primary combustion chamber ceiling 17 Primary combustion chamber outlet 19 Air Blower Pipe 31 Center connecting pipe 33 Secondary combustion chamber housing 51 Bottom of tertiary combustion chamber 53 Side wall of tertiary combustion chamber 55 Tertiary Combustion Chamber Ceiling 57 Gas supply pipe 61 Introduction of the tertiary combustion chamber 63 Exhaust channel

Claims

1. A combustion chamber (7) having a combustion chamber bottom (51), a combustion chamber side wall (53), and a combustion chamber ceiling (55), The bottom (51), the side wall (53), and the ceiling (55) of the combustion chamber constitute an inner combustion chamber space, which is a space surrounded by these. The combustion chamber (7) a gas supply pipe (57) for supplying a supply gas to the combustion chamber (7), which is a gas to be sent into the combustion chamber; An introduction portion (61) of the combustion chamber for introducing a gas including unburned gas into the combustion chamber space; The combustion chamber further includes an exhaust passage (63) through which the combustion gas obtained by mixing the unburned gas with the supply gas of the combustion chamber (7) and burning the mixture in the combustion chamber space is exhausted, The gas supply pipe (57) has a cylindrical main body (65) having a circular or elliptical cross section inside the combustion chamber space, is installed vertically, and has a group of holes that are a plurality of holes, the gas supply pipe (57) has a connection portion that connects a portion of the gas supply pipe (57) that is present outside the combustion chamber (7) and an upper portion of the cylindrical main body portion (65); The combustion chamber (7) further includes a fuel supply (75) for supplying fuel into the combustion chamber (7); The bottom (51) of the combustion chamber has a curved shape so as to collect the fuel supplied from the fuel supply part (75) in a central region of the bottom (51) of the combustion chamber. Combustion chamber (7).

2. A combustion chamber (7) according to claim 1, The hole group is a combustion chamber (7) in which a plurality of holes constituting the hole group are provided at an angle of 10° or more and 80° or less with respect to the central axis of the cylindrical main body portion (65).

3. A combustion chamber (7) according to claim 1, The combustion chamber (7) is arranged so that each of the holes constituting the group of holes is positioned at a position shifted a predetermined distance in the longitudinal direction of the cylindrical main body portion (65) when the angle between the cylindrical main body portion (65) and the central axis of the cylindrical main body portion (65) increases by a predetermined angle.

4. A combustion chamber (7) according to claim 1, A combustion chamber (7) having a plurality of hooks (81) on an outer surface of a side wall (53) of the combustion chamber.

5. A combustion chamber (7) according to claim 1, The combustion chamber (7), wherein the cylindrical body (65) has a lid having a plurality of holes at its bottom.

6. A combustion chamber (7) according to claim 1, The cylindrical main body portion (65) has a plurality of lower protrusions (87) in a lower region, and the supply gas of the combustion chamber supplied to the cylindrical main body portion (65) is released from the lower protrusions (87) into the interior space of the combustion chamber.

7. A combustion chamber (7) according to claim 1, A combustion chamber (7), wherein the supply gas for the combustion chamber (7) is supplied from an upper portion of the cylindrical body portion (65).

8. A combustion device (1) comprising a combustion chamber (7) according to any one of the preceding claims.

9. A combustion device (1) comprising a combustion chamber (7) according to any one of claims 1 to 7 as a tertiary combustion chamber (7), The combustion device (1) comprises a primary combustion chamber (3) and a secondary combustion chamber (5) connected to the primary combustion chamber (3), the secondary combustion chamber (5) being connected to the tertiary combustion chamber (7); The bottom (51), the side wall (53), the ceiling (55) and the introduction part (61) of the combustion chamber are respectively the bottom (51), the side wall (53) of the tertiary combustion chamber, the ceiling (55) of the tertiary combustion chamber and the introduction part (61) of the tertiary combustion chamber; The combustion chamber space is a tertiary combustion chamber space, The gas containing the unburned gas is a secondary combustion gas, The combustion gas is a tertiary combustion gas, the hole group is a third hole group, The primary combustion chamber (3) comprises: The primary combustion chamber has a bottom (11), a side wall (13), and a ceiling (15) of the primary combustion chamber, and the bottom, side wall, and ceiling of the primary combustion chamber form a primary combustion chamber interior space that is a space surrounded by these, and an outlet (17) of the primary combustion chamber adapted to convey gas to the secondary combustion chamber; and a blower pipe (19) provided in the primary combustion chamber space and having a first group of holes, A primary combustion gas obtained by burning a first waste material is discharged from an outlet of the primary combustion chamber; The secondary combustion chamber (5) a central connecting pipe (31) connecting the outlet (17) of the primary combustion chamber and the tertiary combustion chamber (7); a housing (33) of the secondary combustion chamber surrounding the outside of the central connecting pipe (31); The central connecting pipe (31) is provided with a second group of holes, which is a plurality of holes; A gas supplied to the secondary combustion chamber, which is a gas sent to the housing (33) of the secondary combustion chamber, is sent into the central connecting pipe (31) through the second group of holes, and a secondary combustion gas, which is a gas obtained by mixing the primary combustion gas and the gas supplied to the secondary combustion chamber, is led out from the central connecting pipe (31) to the tertiary combustion chamber (7). Combustion device.

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