Combustion device

Abstract

To provide a combustion device capable of controlling unburnt gas by simple control, and efficiently subjecting waste to primary combustion.SOLUTION: There are provided: a combustion chamber 7 comprising a bottom section, a side wall and a ceiling of the combustion chamber, a gas feed pipe for feeding feed gas of the combustion chamber 7, i.e., gas to be fed into the combustion chamber, an introduction unit of the combustion chamber for introducing gas including unburnt gas into the internal space of the combustion chamber, and a discharge path through which the combustion gas obtained by mixing / burning the unburnt gas and the feed gas present in the internal space of the combustion chamber is discharged, the gas feed pipe being a cylindrical body of a circular or an elliptical cross section, with a group pf holes, i.e., a plurality of holes disposed inside the internal space of the combustion chamber; and a combustion device 1 comprising the combustion chamber 7.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] Combustion devices for burning waste materials are known. The combustion devices include a plurality of combustion chambers and paths connecting 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] Japanese Patent Application Publication No. 2019-020055 [Patent Document 3] Patent Publication No. 2021-063600 Summary of the Invention [Problem to be solved by the invention]

[0004] What is needed is a combustion chamber that can efficiently burn unburned gases, and a combustion device that can improve combustion efficiency, neutralize waste, and process waste while meeting environmental standards. [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 with a group of holes, which are a plurality of holes, and diffusing the 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 , combustion chamber sidewalls 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 combusting the mixture in the combustion chamber space 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 which are a plurality of holes.

[0007] The hole group is preferably one in which the plurality of holes constituting the hole group are arranged at an angle of 10° to 80° relative to the central axis of the cylindrical main body 65. It is preferable that each hole constituting the hole group is arranged so that as the angle formed with the central axis of the cylindrical main body 65 increases by a predetermined angle, the position of the hole is shifted a predetermined distance in the longitudinal direction of the cylindrical main body 65. The combustion chamber 7 preferably has a plurality of hooks 81 on the outer surface of the side wall 53 of the combustion chamber. The cylindrical main body 65 preferably also has a lid with a plurality of holes at its bottom. The cylindrical main body 65 preferably has a plurality of lower protrusions 87 in its lower region, and the combustion chamber supply gas supplied to the cylindrical main body 65 is preferably released into the combustion chamber space from the lower protrusions 87.

[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, and 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 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, respectively, the combustion chamber space is the tertiary combustion chamber space, the gas including unburned gas is secondary combustion gas, and the combustion gas is 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 an inner space of the primary combustion chamber, which is a space enclosed by these components. The primary combustion chamber 3 further has a primary combustion chamber outlet section 17 that allows gas to be transported to the secondary combustion chamber, and an air supply pipe 19 that is provided in the space inside the primary combustion chamber and has a first group of holes that are multiple holes. The primary combustion chamber 3 is a chamber from which primary combustion gas obtained by burning the first waste material is discharged. 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 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 is a plurality of holes. In the secondary combustion chamber 5, the gas supplied to the secondary combustion chamber housing 33 is sent into the central connecting pipe 31 through the second group of holes, 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. [Effects of the Invention]

[0010] According to this invention, it is possible to provide a combustion chamber that can efficiently burn unburned gas, and also to provide a combustion device that can improve combustion efficiency, detoxify waste, and process waste while satisfying environmental standards. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a conceptual diagram showing an example of the configuration of a combustion device. [Figure 2] FIG. 2 is a conceptual diagram showing an example of a primary combustion chamber. [Figure 3] FIG. 3 is a conceptual diagram showing an example of a cross-sectional view of a primary combustion chamber. [Figure 4] Figure 4 is a conceptual diagram showing an example of an air blower pipe. Figure 4(a) is a conceptual diagram showing an example of an installation of an air blower pipe. Figure 4(b) is a diagram showing an example of a cross section of an air blower pipe. Figure 4(c) is a diagram showing an example of a design of an air blower pipe. [Figure 5] FIG. 5 is a conceptual diagram showing an example of installation of an air blowing 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 for a secondary combustion chamber. Figure 7(a) shows a view of the housing for the secondary combustion chamber from above. Figure 7(b) is a cross-sectional view taken along line BB of Figure 7(a). Figure 7(c) is a view of the secondary combustion chamber from the side. [Figure 8] Figure 8 is a conceptual diagram showing the central connecting pipe of the secondary combustion chamber. Figure 8(a) is a longitudinal cross-sectional view of the central connecting pipe of the secondary combustion chamber (cross-sectional view taken along line AA in Figure 7(a)). Figure 8(b) is a conceptual diagram of the central connecting pipe of the secondary combustion chamber. Figure 8(c) is an example of a design drawing of the central connecting pipe of the secondary combustion chamber. Figure 8(d) is a cross-sectional view of the central connecting pipe of the secondary combustion chamber. [Figure 9]Figure 9 is a conceptual diagram showing an example of the appearance of a tertiary combustion chamber. Figure 9(a) shows an external view of the tertiary combustion chamber. Figure 9(b) shows a top view of the tertiary combustion chamber. Figure 9(c) shows a cross-sectional view of the tertiary combustion chamber (cross-sectional view AA in Figure 9(b)). Figure 9(d) shows a front view of the tertiary combustion chamber. Figure 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 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 the 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 place of drawings showing the combustion device in the example. 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 INVENTION

[0012] The following describes embodiments of the present invention with reference to the drawings. The present invention is not limited to the embodiments described below, and also includes appropriate modifications of the embodiments below within the scope obvious to those skilled in the art.

[0013] Combustion device 1 FIG. 1 is a conceptual diagram showing an example of the configuration 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 include any one of the combustion chambers, or may include additional combustion chambers. Below, an example of this invention will be described based on the combustion device 1 including 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 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 sidewall 13, and a ceiling 15. The bottom 11, sidewall 13, and ceiling 15 of the primary combustion chamber define a primary combustion chamber space, which is the space enclosed 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 connecting the primary combustion chamber outlet 17 and the tertiary combustion chamber 7, and a secondary combustion chamber housing 33 surrounding the exterior of the central connecting pipe 31. The central connecting pipe 31 is provided with a second group of holes. The secondary combustion chamber supply gas, which is 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 secondary combustion gas. After mixing, the primary combustion gas and the secondary combustion chamber supply gas may be combusted. The secondary combustion gas thus obtained is discharged 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 an inner tertiary combustion chamber space, which is the space enclosed thereby. The tertiary combustion chamber 7 has a gas supply pipe 57 for sending tertiary combustion chamber supply gas, which is gas sent into the tertiary combustion chamber, a tertiary combustion chamber inlet 61 for introducing secondary combustion gas into the tertiary combustion chamber space, and an exhaust path 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 path 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 an oxygen-containing gas, or mixed with an oxygen-containing gas 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 an oxygen-containing gas, then combusted and discharged. This allows the combustion device 1 to, for example, render waste harmless, or to treat waste in compliance with environmental standards. Examples of waste include waste tires, waste plastics, waste oil, and combustible waste. This combustion device 1 can preferably treat 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 primary combustion of waste. When waste is burned in the primary combustion chamber 3, unburned gas (combustion gas containing unburned gas generated 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 that the primary combustion chamber 3 stabilizes 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 FIGS. 2 and 3, the primary combustion chamber 3 has a bottom 11, a sidewall 13, and a ceiling 15. The primary combustion chamber 3 has an internal combustion chamber space, which is a space surrounded by the bottom 11, the sidewall 13, and the ceiling 15. 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 that enables gas to be discharged from the internal 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 that discharges combustion gas in the internal combustion chamber space to the secondary combustion chamber 5. As shown in Figure 2, the primary combustion chamber 3 may have a first inlet 21. As shown in Figure 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 adjusted appropriately 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 5x10 or more 3 m 3 Less than 5 x 10 is fine. 2 m 3 3x10 or more 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 unit (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 burned 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 so that additional waste can be input into the primary combustion chamber 3 even when the primary combustion chamber 3 is currently burning waste.

[0021] Primary combustion chamber outlet 17 The primary combustion chamber outlet 17 may be, for example, a hole provided in the sidewall 13 of the primary combustion chamber, or a conduit connected to the hole in the sidewall 13 of the primary combustion chamber. The center of the primary combustion chamber outlet 17 is preferably located at a position between 15% and 45% (preferably between 20% and 40%, and more preferably between 25% and 35%) of the height of the sidewall of the primary combustion chamber (from the bottom to the ceiling of the primary combustion chamber). The position of the primary combustion chamber outlet 17 may be movable (adjustable) within the above range. The center of the primary combustion chamber outlet 17 refers to the center of gravity of the primary combustion chamber outlet 17. For example, if the primary combustion chamber outlet 17 is a circular hole, it refers to the center of the circle. Through extensive trial and error, it was found that the primary combustion gas extraction portion is preferably located slightly below the center of the primary combustion chamber. The temperature inside the combustion chamber is highest at the top. For this reason, combustion gas is typically extracted 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] Ventilation pipe 19 The air blowing pipe 19 is an element provided in the primary combustion chamber inner space and has a first group of holes, which are a plurality of holes. The air blowing pipe 19 guides gas from the first group of holes to the primary combustion chamber inner space. In the example of Figure 3, two pipes with holes function as the air blowing pipe 19.

[0023] FIG. 4 is a conceptual diagram showing an example of an air supply pipe. FIG. 4(a) is a conceptual diagram showing an example of an installation of the air supply pipe. FIG. 4(b) is a diagram showing an example of a cross-sectional view of the air supply pipe. FIG. 4(c) is a diagram showing an example of an air supply pipe design. As shown in FIG. 4(a), the air supply 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, because primary combustion efficiency is improved when the air supply pipe 19 is not far from the bottom 11 of the primary combustion chamber, the air supply pipe 19 does not have to be far from the bottom 11 of the primary combustion chamber. If the air supply pipe 19 is located away from the bottom 11 of the primary combustion chamber, it becomes easier to remove residue at the bottom and clean the primary combustion chamber 3. In the example of FIG. 4(a), the air supply pipe 19 is cylindrical. However, the shape of the air supply pipe 19 is not limited to a cylindrical shape. The air supply 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 sides of the air blower pipe 19. However, theoretical calculations of the air blower pipe 19 have shown that providing holes on three sides (top, bottom, left, and right) of the air blower pipe 19 is preferable because it increases combustion efficiency. In this case, the left and right holes may be offset from the upper hole by 90°, or by 60° to 120°, or by 60° to 90°, or by 75° to 105°, or by 75° to 90°. The holes are preferably circular or elliptical. The diameter of the holes (the length of the major axis if the holes are elliptical; the same applies below) is, for example, 1 mm to 1 cm, or 2 mm to 6 mm, or 3 mm to 5 mm. In the example shown in FIG. 4(c), the holes are provided at 5 cm intervals along the longitudinal direction of the air blower pipe. This distance 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 holes of the air supply 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 holes. By reducing the size of the lower holes in this way, 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 an air supply pipe. FIG. 5(a) is a diagram showing the lower region of the primary combustion chamber 3. FIG. 5(b) is a diagram showing a side view of the primary combustion chamber 3. As shown in FIG. 5, the air supply pipe 19 preferably has a valve 25 (air volume adjustment mechanism) provided outside the primary combustion chamber to adjust the air volume. The piping may be connected by an appropriate flange. In the example of FIG. 5, the air supply pipe 19 is connected to a first gas introduction passage 29 (e.g., a pipe) connected to a first gas supply unit 27 (not shown) via the valve 25. Examples of the first gas supply unit 27 include a blower and a compressor. The first gas supply unit 27 preferably has a heating mechanism. If the first gas supply unit 27 has a heating mechanism, heated outside air can be introduced into the air supply 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 have an open end. In this case, the first gas supply unit 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 appropriately adjusted 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 using the valve 25 in this manner. One factor that makes this control possible is the different position of the discharge unit 17 of the primary combustion chamber from conventional ones. The first gas supply unit 27 may supply a gas other than outside air (e.g., 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 Figure 3, the lower part of the side wall 13 of the primary combustion chamber preferably has an inclined wall 23. For example, 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. Because the primary combustion chamber 3 has the inclined wall 23, the waste is placed near the blower pipe 19, allowing the waste to be burned efficiently.

[0026] Example of operation of primary combustion chamber 3 The first charging port 21 is opened to an open state. Then, waste is charged into the primary combustion chamber interior space through the first charging port 21. The waste is ignited, and the first charging 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 supply pipe 19 via the first gas introduction path 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 from 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 delivered 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 outlet 17 is provided slightly below the center of the primary combustion chamber, allowing for stable discharge of unburned gas. 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 and composition of unburned gas 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 with the valve 25. The combustion gas is discharged from the primary combustion chamber space to the outside via the outlet 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 outlet 17 of the primary combustion chamber. A preferred example of the primary combustion chamber 3 is one in which the position of the outlet 17 of the primary combustion chamber is adjusted to give it a shape that can discharge a constant amount of gas, thereby stably generating unburned gas (primary combustion gas), and further, the amount of unburned gas can be controlled 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. In addition, by connecting piping containing a liquid to the primary combustion chamber 3, it can also 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 then discharged to the tertiary combustion chamber 7 as secondary combustion gas. Note that 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. Therefore, the secondary combustion chamber 5 is intended to supply oxygen to the primary combustion gas to make it a gas (secondary combustion gas) that is more likely to be completely burned.

[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 shown in 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 a housing of a secondary combustion chamber. FIG. 7(a) shows a top view of the housing of the secondary combustion chamber. FIG. 7(b) is a cross-sectional view taken along the line B-B of FIG. 7(a). FIG. 7(c) is a side view of the secondary combustion chamber. The housing 33 of the secondary combustion chamber is preferably connected to a second gas introduction passage 37 (e.g., a pipe) connected to a 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 via the second gas introduction passage 37. The second gas supply unit 35 preferably has a heating mechanism. If 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 unit 35. The amount of gas supplied into the secondary combustion chamber 5 can be adjusted appropriately 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. Note that the amount of air supplied to the secondary combustion chamber 5 may also be adjusted using a known air amount adjustment mechanism other than the valve 39. Both ends of the secondary combustion chamber housing 33 are designed to be located inside the connecting portions present in the end regions of the central connecting pipe 31. This prevents the gas introduced from the second gas supply unit 35 from leaking outside the secondary combustion chamber housing 33. The secondary combustion chamber housing 33 preferably has a cylindrical main body with the second gas introduction passage 37 connected as a branch to a portion of its side. The diameter of the secondary combustion chamber housing 33 is, for example, 80 mm to 500 mm, 40 mm to 300 mm, 100 mm to 300 mm, or 80 mm to 200 mm. The longitudinal length of the secondary combustion chamber housing 33 may be 50 mm to 800 mm, 50 mm to 800 mm, 100 mm to 600 mm, 200 mm to 600 mm, or 150 mm to 500 mm.

[0032] Central connecting pipe 31 FIG. 8 is a conceptual diagram showing a central connecting pipe of a secondary combustion chamber. FIG. 8(a) is a longitudinal cross-sectional view of the central connecting pipe of the secondary combustion chamber (cross-sectional view taken along line AA in FIG. 7(a)). 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 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 gas from the housing 33 of the secondary combustion chamber into the central connecting pipe 31. In the example shown in FIG. 8(a), a connecting part 41 with the outlet 17 of the primary combustion chamber 3 is located at the left end of the central connecting pipe 31. In the example shown in FIG. 8(a), a connecting part 43 with the tertiary combustion chamber 7 (the inlet part 61) is located at the right end of the central connecting pipe 31.

[0033] The second group of holes is preferably arranged so that the airflow into the central connecting pipe 31 forms 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 left to right in the drawing (from the primary combustion chamber 3 side to the tertiary combustion chamber 7). The diameter of the holes may be, for example, 1 mm to 1 cm, or 2 mm to 6 mm. Furthermore, as shown in FIGS. 8(b) and 8(c), the second group of holes may be arranged 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 holes increases by a predetermined angle (90°), the position of the holes shifts by a predetermined distance (for example, 3 mm to 3 cm, or 5 mm to 2 cm) in the longitudinal direction of the central connecting pipe 31. In other words, each hole constituting the second group of holes is positioned at a predetermined distance in the longitudinal direction of the central connecting pipe 31 when the angle between the hole and the central axis of the central connecting pipe 31 increases by a predetermined angle. 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 airflow into the central connecting pipe 31 moves in a spiral pattern.

[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 arranged at an angle relative to the central axis of the central connecting pipe 31. A perpendicular line is drawn from the center of each hole to the central axis of the central connecting pipe 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 this perpendicular line and the central axis is the angle the hole makes with the central axis of the central connecting pipe 31. In the example of FIG. 4(b), this angle was 0° (although the hole 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 central connecting pipe 31 describes 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] Operation example of secondary combustion chamber 5 The primary combustion gas contains a high concentration of unburned gas, so the secondary combustion chamber 5 mixes gas such as oxygen into the primary combustion gas. 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 adjusted as appropriate, and may be from 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 passes through the secondary combustion chamber housing 33 and the second group of holes and is introduced into the central connecting pipe 31. In a preferred example, the airflow into the central connecting pipe 31 forms a spiral flow 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 secondary combustion chamber housing 33, is sent into the central connecting pipe 31 through the second group of holes, and becomes secondary combustion gas, which is a mixture of the primary combustion gas and the supply gas (oxygen or outside air) of the secondary combustion chamber. The secondary combustion gas is then led from the central connecting pipe 31 to the tertiary combustion chamber. This dramatically improves the combustion efficiency in the tertiary combustion chamber.

[0036] Tertiary combustion chamber 7 Figure 9 is a conceptual diagram showing an example of the appearance of a tertiary combustion chamber. Figure 9(a) shows an external view of the tertiary combustion chamber. Figure 9(b) shows a top view of the tertiary combustion chamber. Figure 9(c) shows a cross-sectional view of the tertiary combustion chamber (cross-sectional view AA in Figure 9(b)). Figure 9(d) shows a front view of the tertiary combustion chamber. Figure 9(e) shows a right side view of the tertiary combustion chamber. As shown in FIG. 9 , the tertiary combustion chamber 7 has a tertiary combustion chamber bottom 51, a tertiary combustion chamber sidewall 53, and a tertiary combustion chamber ceiling 55. The space surrounded by the tertiary combustion chamber bottom 51, the tertiary combustion chamber sidewall 53, and the tertiary combustion chamber ceiling 55 constitutes the tertiary combustion chamber space. The tertiary combustion chamber 7 further has a gas supply pipe 57, a tertiary combustion chamber inlet 61, and an outlet 63. The gas supply pipe 57 is an element for sending tertiary combustion chamber supply gas, which is gas sent into the tertiary combustion chamber. The tertiary combustion chamber inlet 61 is an element for introducing secondary combustion gas into the tertiary combustion chamber space. The outlet 63 is an element for discharging the tertiary combustion gas. The tertiary combustion gas is combustion gas obtained by mixing the secondary combustion gas and the tertiary combustion chamber supply gas in the tertiary combustion chamber space and then burning them. The tertiary combustion chamber 7 may have a tertiary combustion chamber main body portion 71 and a support portion 73 that supports the tertiary combustion chamber main body portion 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 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 portion 61 of the tertiary combustion chamber is provided on the right side of the support portion 73. In the example shown in FIG. 10 , the bottom portion 51 of the tertiary combustion chamber has a curved shape. This is to collect fuel injected into the bottom portion 51 of the tertiary combustion chamber in the central region of the bottom portion 51 of the tertiary combustion chamber. In the example shown in FIG. 10 , the support portion 73 has a fuel supply portion 75. In the example shown in FIG. 10 , the fuel supply portion 75 is located at the center of the bottom of the bottom portion 51 of the tertiary combustion chamber. However, the fuel supply portion 75 may be provided at another position in the tertiary combustion chamber. The fuel supplied by the fuel supply portion 75 may be liquid fuel or gaseous fuel. Note that a gas introduction portion or an intake port for introducing gas may be provided at the position of the fuel supply portion 75 (the center of the bottom of the bottom portion 51 of the tertiary combustion chamber).

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

[0039] Tertiary combustion chamber main body 71 FIG. 11 is a conceptual diagram illustrating the tertiary combustion chamber main body. As shown in FIG. 11, the tertiary combustion chamber main body 71 includes a roughly cylindrical portion and an exhaust channel 63 located at the top of the portion. The tertiary combustion chamber main body 71 is connected to a gas supply pipe 57, so that 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 top of the tertiary combustion chamber main body 71. In the example shown in FIG. 11, multiple hooks 81 are provided on the outer surface of the tertiary combustion chamber main body 71. The tertiary combustion chamber 7 has multiple hooks 81, which makes it easier to install piping surrounding the tertiary combustion chamber main body 71. Preferably, the tertiary combustion chamber 7 has piping installed around the tertiary combustion chamber main body 71 so that the tertiary combustion chamber 7 can be cooled. The liquid in the piping heated by the tertiary combustion chamber 7 can be used for heating. The plurality of hooks 81 are preferably provided at predetermined intervals at a predetermined height on the tertiary combustion chamber inner body part 71. In the example of Fig. 11, the plurality of hooks 81 are provided at 90° intervals at three different height positions on the outer periphery of the tertiary combustion chamber inner body part 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. If 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 65 that is installed vertically inside the tertiary combustion chamber 7. As shown in FIG. 9(c), the gas supply pipe 57 has a connecting portion that connects the portion of the gas supply pipe 57 that exists outside the tertiary combustion chamber 7 with the upper part of the cylindrical main body 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. Specifically, the gas supplied from the upper part of the cylindrical main body 65 passes through the cylindrical main body 65 and is discharged from the lower part of the cylindrical main body 65. As will be described later, when the cylindrical main body 65 has a third group of holes, the gas is introduced into the tertiary combustion chamber 7 through the third group of holes as it travels from the top to the bottom of the cylindrical main body 65. The cylindrical main body 65 preferably has a circular or elliptical cross section. The length of the cylindrical main body 65 is, for example, 40 cm to 5 m, or may be 70 cm to 3 m, or 1 m to 2 m. The diameter of the cylindrical main body 65 is, for example, 3 cm to 40 cm, or may be 5 cm to 30 cm, or may be 5 cm to 25 cm. The shape of the cylindrical main body 65 is not limited to a cylindrical shape, but is preferably cylindrical.

[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 the 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. Because the cylindrical main body 65 has the handles, it is easier to install the cylindrical main body 65 and to fine-tune the cylindrical main body 65 after installation. A lid having a plurality of holes is preferably provided at the bottom of the cylindrical main 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 main body 65 is released from the bottom of the cylindrical main 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 to adjust the airflow. The interior of the lower protrusions 87 is preferably hollow, and the side of the lower protrusions 87 is preferably provided with a plurality of holes. With such lower protrusions 87, gas is also emitted from the lower protrusions 87, thereby controlling the airflow within the tertiary combustion chamber. The lower protrusions 87 may be positioned offset from the handle 85 (e.g., offset by 45°). The presence of the lower protrusions 87 and the handle 85 in such positions facilitates the circulation of the gas emitted from the lower protrusions 87. This improves the combustion efficiency of the tertiary combustion chamber 7.

[0043] The third group of holes is preferably provided so that the gas is 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 relative to the direction away from the center of the cylindrical main body 65, rather than traveling straight away from the center of the cylindrical main body 65. The diameter of the holes is, for example, 1 mm to 1 cm, or 2 mm to 6 mm. Furthermore, 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 holes increases by a predetermined angle (90°), the position of the holes shifts by a predetermined distance (e.g., 3 mm to 5 cm, 3 mm to 3 cm, 5 mm to 10 cm, or 5 mm to 2 cm) in the longitudinal direction of the cylindrical main body 65. In other words, each of the holes constituting the third group of holes is positioned at a predetermined distance in the longitudinal direction of the cylindrical main body 65 when the angle between the hole and the central axis of the cylindrical main body 65 increases by a predetermined angle. The positions of the holes are such that, when adjacent holes are smoothly connected to each other, they form a spiral. In this way, the airflow of gas released from the cylindrical main body 65 into the internal space of the tertiary combustion chamber 7 swirls. This improves the combustion efficiency of the tertiary combustion chamber 7.

[0044] As shown in FIG. 12(c), the third hole group is preferably such that the plurality of holes constituting the third hole group are arranged 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 the hole makes with respect to the central axis of the cylindrical main body 65. The third hole group preferably has an angle (other than 0°) between the perpendicular line and the central axis so that the gas flow released from the cylindrical main body 65 swirls. Specific examples of the angle are 10° to 80°, 20° to 70°, 30° to 60°, or 30° to 50°. This improves the combustion efficiency of the tertiary combustion chamber 7.

[0045] Operation example 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 or higher and 60°C or lower, or 30°C or higher and 50°C or lower. 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 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 main 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 main body 65. The supply gas is also discharged downward from the cylindrical main body 65 through a plurality of holes in a lid provided on the bottom surface of the cylindrical main body 65. The supply gas is further discharged in, for example, vertical and horizontal directions through the lower protrusion 87. In this way, the supply gas is introduced into the tertiary combustion chamber and forms a desirable airflow. The fuel supply unit 75 appropriately supplies liquid fuel into the tertiary combustion chamber. Furthermore, heated gas may be appropriately supplied to the lower part of the tertiary combustion chamber. It is preferable to introduce gas containing oxygen into the center of the fire source and cause explosive combustion at high temperature. By doing this, the secondary combustion gas can be burned to produce tertiary combustion gas, and the unburned gas can be completely burned and made harmless, allowing waste to be treated while complying with environmental standards. The detoxified 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 can be constructed using the supply amounts and sensing information of various supply gases as training data. Then, the sensing information measured by the sensor is input into the trained model. Then, the control unit can automatically control various supply units (e.g., each gas supply unit and fuel supply unit) and valves to appropriately treat waste. Furthermore, the accuracy of machine learning can be improved by feeding back the data processed in this way to the trained model. [Example]

[0046] A combustion device with primary, secondary and tertiary combustion chambers was actually manufactured. Figure 13 shows photographs in place of drawings showing the combustion device in the example. 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 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 900m. 3 Two pipes are placed at the bottom of the primary combustion chamber, and holes with a diameter of about 3 mm are provided in the pipes at an appropriate distance of 50 mm, and heated air of about 40°C is introduced through the pipes at a rate of 0.2 m. 3 The fuel was burned at a temperature of approximately 100-500°C (or 150-350°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 approximately 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 the outer pipe:inner pipe ratio being 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 speed of 0.2m. 3 / min and gradually sent out from the holes. To create a combustible gas mixture, small holes about 3 mm in diameter were placed in the inner pipe at 40 mm intervals in a spiral at an angle of about 40 degrees from the center, and air at about 40°C was taken in from the outer pipe to create a secondary combustion or a gas mixture with air in the flue. In this way, secondary combustion gas was obtained.

[0048] A round pipe descends vertically into the center of the tertiary combustion chamber, and holes of about 3 mm diameter are arranged in a spiral at 50 mm pitch at 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 introduced into the center of the fire source, causing explosive combustion at high temperature. This allowed for complete combustion of unburned gas, neutralizing odors, smoke, and harmful components. 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 blast pipe 31 Central 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 to the tertiary combustion chamber 63 Exhaust channel

Claims

1. A combustion chamber (7) having a combustion chamber bottom (51), a combustion chamber sidewall (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 gas containing 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 and then burning the unburned gas in the combustion chamber space 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 which are a plurality of holes.

2. A combustion chamber (7) according to claim 1, The combustion chamber (7) is configured such that the plurality of holes constituting the hole group are arranged 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 by a predetermined distance in the longitudinal direction of the cylindrical main body portion (65) when the angle formed with 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 the outer surface of the side wall (53) of said combustion chamber.

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

7. A combustion device (1) comprising a combustion chamber (7) according to any one of claims 1 to 6.

8. A combustion device (1) comprising a combustion chamber (7) according to any one of claims 1 to 6 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), the ceiling (55) 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 group of holes is a third group of holes, 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 space that is a space surrounded by these, and an outlet (17) of the primary combustion chamber adapted to transport gas to the secondary combustion chamber; 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 the 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 exterior of the central connecting pipe (31); The central connecting pipe (31) is provided with a second group of holes, which are a plurality of holes; The gas supplied to 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 the 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 from the central connecting pipe (31) to the tertiary combustion chamber (7). Combustion device.

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