Crematory

Abstract

To provide a crematory capable of effectively rendering a harmful substance contained in soot generated in a main combustion chamber harmless in a re-combustion chamber.SOLUTION: A crematory includes a main combustion chamber for burning a cremation object, a main burner provided in the main combustion chamber, a re-combustion chamber communicating with the main combustion chamber, an auxiliary burner provided in the re-combustion chamber so as to re-burn soot flowing into the re-combustion chamber from the main combustion chamber, at least one nozzle provided in the re-combustion chamber, and an exhaust gas supply line which supplies a part of exhaust gas discharged from the re-combustion chamber to the at least one nozzle. The nozzle injects the exhaust gas supplied from the exhaust gas supply line toward the flame in a direction crossing an axial direction of the auxiliary burner.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to crematoriums. [Background technology]

[0002] Patent Document 1 discloses a crematorium equipped with a main combustion chamber equipped with a main burner for burning the cremated object and a re-burning chamber connected to the main combustion chamber. The re-burning chamber is equipped with an auxiliary burner for re-burning the soot generated in the main combustion chamber and neutralizing harmful substances (such as dioxins) contained in the soot. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-060546 Summary of the Invention [Problem to be solved by the invention]

[0004] In the crematorium described in Patent Document 1, if some of the soot that flows from the main combustion chamber through the flue into the re-burning chamber passes outside the flame of the auxiliary burner, there is a concern that some of the harmful substances contained in the soot will be emitted from the re-burning chamber without being neutralized.

[0005] In view of the above circumstances, at least one embodiment of the present disclosure aims to provide a crematorium that can effectively neutralize harmful substances contained in the soot generated in the main combustion chamber in the re-combustion chamber. [Means for solving the problem]

[0006] In order to achieve the above object, a crematorium according to at least one embodiment of the present disclosure comprises: a main combustion chamber for burning the cremated remains; a main burner provided in the main combustion chamber; a re-burning chamber communicating with the main combustion chamber; an auxiliary burner provided in the reburning chamber and configured to reburn soot that flows from the main combustion chamber into the reburning chamber; At least one nozzle provided in the reburning chamber; an exhaust gas supply line configured to supply a portion of the exhaust gas discharged from the reburning chamber to the at least one nozzle; Equipped with The at least one nozzle is configured to inject the exhaust gas supplied from the exhaust gas supply line toward the flame formed by the auxiliary burner in a direction intersecting the axial direction of the auxiliary burner. [Effects of the Invention]

[0007] According to at least one embodiment of the present disclosure, a crematorium is provided that can effectively neutralize harmful substances contained in soot generated in the main combustion chamber in the re-combustion chamber. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic cross-sectional view showing the configuration of a crematorium furnace 2 according to one embodiment of the present disclosure. [Figure 2] 2 is a schematic cross-sectional view showing an example of an AA cross section (horizontal cross section) of the re-burning chamber 12 in FIG. 1. FIG. [Figure 3] FIG. 3 is a diagram schematically showing an example of a BB cross section (vertical cross section) of the re-burning chamber 12 in FIG. [Figure 4] 2 is a schematic cross-sectional view showing another example of the AA cross section (horizontal cross section) of the re-burning chamber 12 in FIG. 1. FIG. [Figure 5] 3A and 3B are diagrams showing an example of the shape of a nozzle 30. FIG. [Figure 6] FIG. 10 is a schematic cross-sectional view showing the configuration of a crematorium 2 according to another embodiment. [Figure 7] 3 is a diagram schematically showing another example of the BB cross section (vertical cross section) of the re-burning chamber 12 in FIG. 2. FIG. [Figure 8] FIG. 8 is a schematic cross-sectional view showing the configuration of a crematorium 2 according to another embodiment. [Figure 9] 9 is a diagram showing an example of a cross section taken along line DD in FIG. 8. [Figure 10] 10 is a diagram showing another example of the shape of the nozzle 30. FIG. [Figure 11] 10 is a diagram showing another example of the shape of the nozzle 30. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, several embodiments of the present disclosure will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of components described as embodiments or shown in the drawings are merely illustrative examples and are not intended to limit the scope of the invention. For example, expressions expressing relative or absolute arrangement such as "in a certain direction," "along a certain direction," "parallel," "orthogonal," "center," "concentric," or "coaxial" not only express such an arrangement exactly, but also express a state in which there is a relative displacement with a tolerance or an angle or distance to the extent that the same function is obtained. For example, expressions such as "identical," "equal," and "homogeneous" that indicate that something is in an equal state not only indicate a state of strict equality, but also indicate a state in which there is a tolerance or a difference to the extent that the same function is obtained. For example, expressions representing shapes such as a square shape or a cylindrical shape not only represent shapes such as a square shape or a cylindrical shape in the strict geometric sense, but also represent shapes including uneven portions, chamfered portions, etc., to the extent that the same effect can be obtained. On the other hand, the expressions "comprise," "include," "have," "includes," or "have" of one element are not exclusive expressions that exclude the presence of other elements.

[0010] FIG. 1 is a schematic cross-sectional view showing the configuration of a crematorium 2 according to one embodiment of the present disclosure. The crematorium 2 shown in Figure 1 comprises a main combustion chamber 4 for burning the cremation target 10, a main burner 6 provided in the main combustion chamber 4, a re-burning chamber 12 connected to the main combustion chamber 4 via a flue 8, and an auxiliary burner 14 provided in the re-burning chamber 12 and configured to re-burn the soot that flows from the main combustion chamber 4 through the flue 8 into the re-burning chamber 12. The auxiliary burner 14 is configured to neutralize harmful substances such as dioxins contained in the soot by burning the soot and unburned fuel that flow into the re-burning chamber 12.

[0011] Each of the main burner 6 and the auxiliary burner 14 may be configured to burn hydrogen gas as the fuel gas. In this case, each of the main burner 6 and the auxiliary burner 14 may burn high-purity hydrogen gas as the fuel gas (single-fuel combustion), or may burn a mixture of hydrogen gas and natural gas, etc. This makes it possible to achieve a higher combustion temperature and reduce the amount of pollutant emissions caused by combustion, compared to, for example, a burner that uses only natural gas as the fuel gas.

[0012] The main combustion chamber 4 is provided with a door 15 for carrying the cremation subject 10 into the main combustion chamber 4. In this specification, the side of the door 15 in the crematorium 2 (the upstream side in the direction in which the cremation subject 10 is carried into the main combustion chamber 4) is defined as the front side of the crematorium 2, and the side opposite the door 15 in the crematorium 2 (the downstream side in the direction in which the cremation subject 10 is carried into the main combustion chamber 4) is defined as the rear side of the crematorium 2.

[0013] In the illustrated exemplary embodiment, the main burner 6 is provided on a rear wall 16, which is the rear wall of the main combustion chamber 4, and the auxiliary burner 14 is provided on a rear wall 20, which is the rear wall of the re-burning chamber 12. The flue 8 is configured to connect a main combustion chamber outlet 19 formed on the front side of the ceiling 18 of the main combustion chamber 4 with a re-burning chamber inlet 21 formed on the rear side of the floor 22 of the re-burning chamber 12, and includes a first flow path section 8a extending upward from the main combustion chamber outlet 19, a second flow path section 8b extending horizontally from the upper end of the first flow path section 8a toward the rear, and a third flow path section 8c extending vertically so as to connect the rear end of the second flow path section 8b with the re-burning chamber inlet 21.

[0014] The combustion gases and soot generated by burning the cremated object 10 in the main combustion chamber 4 flow into the flue 8 from the main combustion chamber outlet 19, pass through the first flow path 8a, the second flow path 8b, and the third flow path 8c, and then flow into the reburning chamber 12 from the reburning chamber inlet 21, where they are heated by the auxiliary burner 14. The reburning chamber inlet 21 is configured to receive the combustion gases and soot generated in the main combustion chamber 4 into the reburning chamber 12. The combustion gases generated in the reburning chamber 12 are discharged from the reburning chamber outlet 23. A portion of the combustion gas (exhaust gas) discharged from the reburning chamber outlet 23 flows through the exhaust gas line 35 connected to the reburning chamber outlet 23 and is appropriately purified through a filter or other device before being released into the atmosphere. Another portion of the exhaust gas discharged from the reburning chamber outlet 23 flows into the exhaust gas supply line 36, which branches off from the exhaust gas line 35.

[0015] FIG. 2 is a schematic cross-sectional view showing an example of the AA cross section (horizontal cross section) of the re-burning chamber 12 in FIG. As shown in FIG. 2, the crematorium 2 is equipped with a nozzle 30L and a nozzle 30R provided in the reburning chamber 12. As shown in at least one of FIGS. 1 and 2, the reburning chamber 12 includes a rear wall 20 on which the auxiliary burner 14 is provided, a front wall 24 facing the rear wall 20, a ceiling 26, a floor 22, and a pair of opposing side walls 28, 29. The side wall 28 is a side wall (left wall) located on the left side when viewed from the front to the rear of the reburning chamber 12, and connects the front wall 24 and the rear wall 20 and also connects the ceiling 26 and the floor 22. The side wall 29 is a side wall (right wall) located on the right side when viewed from the front to the rear of the reburning chamber 12, and connects the front wall 24 and the rear wall 20 on the side opposite the side wall 28 in the reburning chamber 12, and also connects the ceiling 26 and the floor 22.

[0016] In the illustrated example, the nozzle 30L is provided on the side wall 28 and connected to the exhaust gas supply line 36. The nozzle 30L is configured to inject the exhaust gas supplied from the exhaust gas supply line 36 toward the flame F formed by the auxiliary burner 14 (toward the side wall 29) in a direction d1 intersecting with the axis C of the auxiliary burner 14. The nozzle 30R is provided on the side wall 29 and connected to the exhaust gas supply line 36. The nozzle 30R is configured to inject the exhaust gas supplied from the exhaust gas supply line 36 toward the flame F formed by the auxiliary burner 14 (toward the side wall 28) in a direction d2 intersecting with the axis C of the auxiliary burner 14. In the illustrated example, each of the directions d1 and d2 is perpendicular to the axis C of the auxiliary burner 14, but each of the directions d1 and d2 may be inclined with respect to the direction perpendicular to the axis C of the auxiliary burner 14. Here, the axis C of the auxiliary burner 14 is the center line of the auxiliary burner 14, and the flame F formed by the auxiliary burner 14 extends along the axis C of the auxiliary burner 14.

[0017] 2, each of the nozzles 30L and 30R may be located within a range G in which the re-burning chamber inlet 21 is formed in the direction of the axis C of the auxiliary burner 14 (the front-to-rear direction in the example shown in FIG. 2). Furthermore, the nozzles 30L and 30R may be arranged symmetrically with respect to a vertical plane including the axis C of the auxiliary burner 14.

[0018] In the embodiment shown in Figure 2, the crematorium 2 includes a blower 34 for pressurizing the exhaust gas flowing through the exhaust gas supply line 36, and an exhaust gas supply line 36 configured to supply the exhaust gas pressurized by the blower 34 to the nozzles 30L and 30R. The exhaust gas supply line 36 branches into multiple parts at the downstream end in the flow direction of the exhaust gas, and is connected to the nozzles 30L and 30R, respectively.

[0019] FIG. 3 is a diagram schematically showing an example of a BB cross section (vertical cross section) of the re-burning chamber 12 in FIG. 3, the combustion gas, soot, etc. that flow into the re-burning chamber 12 from the re-burning chamber inlet 21 flow upward through the re-burning chamber 12 and are supplied to the auxiliary burner 14 and its periphery. Here, the nozzle 30L injects the exhaust gas toward the flame F formed by the auxiliary burner 14 (toward the side wall 29) in a direction d1 that intersects with the direction of the axis C of the auxiliary burner 14. Therefore, of the combustion gas, soot, etc. that flow into the re-burning chamber 12 from the re-burning chamber inlet 21, the flows of the combustion gas, soot, etc. that flow near the side wall 28 are guided toward the flame F of the auxiliary burner 14 by the exhaust gas injected from the nozzle 30L, and harmful substances such as dioxins contained in the soot, etc. are neutralized by the flame F of the auxiliary burner 14. That is, the soot that flows into the re-burning chamber 12 from the re-burning chamber inlet 21 can be prevented from passing through the side of the flame F of the auxiliary burner 14 (more specifically, the space S1 between the flame F and the side wall 28) by injecting exhaust gas from the nozzle 30L, and harmful substances contained in the soot generated in the main combustion chamber 4 can be effectively neutralized. Also, by injecting exhaust gas with a lower oxygen concentration than air from the nozzle 30L, the combustion by the auxiliary burner 14 is slowed down, and the NOx of the crematorium 2 is reduced. x emissions can be reduced.

[0020] Furthermore, the nozzle 30R injects the exhaust gas toward the flame F formed by the auxiliary burner 14 (toward the side wall 28) in a direction d2 intersecting the direction of the axis C of the auxiliary burner 14. Therefore, of the combustion gases and soot that flow into the re-burning chamber 12 from the re-burning chamber inlet 21, the flows of the combustion gases and soot that flow near the side wall 29 are guided toward the flame F of the auxiliary burner 14 by the exhaust gas injected from the nozzle 30R, and harmful substances such as dioxins contained in the soot are neutralized by the flame F of the auxiliary burner 14. In other words, the injection of the exhaust gas from the nozzle 30R prevents the soot that flows into the re-burning chamber 12 from the re-burning chamber inlet 21 from passing beside the flame F of the auxiliary burner 14 (more specifically, the space S2 between the flame F and the side wall 29), and harmful substances contained in the soot generated in the main combustion chamber 4 can be effectively neutralized. In addition, by injecting exhaust gas with a lower oxygen concentration than air from the nozzle 30R, the combustion by the auxiliary burner 14 is slowed down, and NO x can reduce emissions.

[0021] Furthermore, as shown in Figure 2, the nozzle 30L is provided within the range G in which the re-burning chamber inlet 21 is formed in the direction of the axis C of the auxiliary burner 14, and therefore the exhaust gas injected from the nozzle 30L located within the range G can effectively prevent the soot flowing upward from the re-burning chamber inlet 21 from passing beside the flame F of the auxiliary burner 14 (more specifically, the space S1 between the flame F and the side wall 28).

[0022] Furthermore, as shown in Figure 2, the nozzle 30R is provided within the range G in which the re-burning chamber inlet 21 is formed in the direction of the axis C of the auxiliary burner 14, and therefore the exhaust gas injected from the nozzle 30R located within the range G can effectively prevent the soot flowing upward from the re-burning chamber inlet 21 from passing beside the flame F of the auxiliary burner 14 (more specifically, the space S2 between the flame F and the side wall 29).

[0023] Figure 4 is a schematic cross-sectional view showing another example of the AA cross section (horizontal cross section) of the re-burning chamber 12 in Figure 1. In the embodiment shown in Figure 4, symbols common to the components shown in Figure 2 indicate the same components as those shown in Figure 2 unless otherwise specified, and explanations thereof will be omitted.

[0024] In some embodiments, the crematorium 2 may include a plurality of nozzles 30L arranged along the axis C of the auxiliary burner 14, and a plurality of nozzles 30R arranged along the axis C of the auxiliary burner 14. The plurality of nozzles 30L are arranged along the front-to-rear direction on the side wall 28, and the plurality of nozzles 30R are arranged along the front-to-rear direction on the side wall 29.

[0025] Each of the plurality of nozzles 30L is configured to inject the exhaust gas supplied from the exhaust gas supply line 36 toward the flame F formed by the auxiliary burner 14 (toward the side wall 29) in a direction d1 intersecting with the direction of the axis C of the auxiliary burner 14. Each of the plurality of nozzles 30R is configured to inject the exhaust gas supplied from the exhaust gas supply line 36 toward the flame F formed by the auxiliary burner 14 (toward the side wall 28) in a direction d2 intersecting with the direction of the axis C of the auxiliary burner 14.

[0026] As shown in Fig. 4, the multiple nozzles 30L may include at least one nozzle 30L located within a range G in which the re-burning chamber inlet 21 is formed in the direction of the axis C of the auxiliary burner 14 (the front-to-rear direction in the example shown in Fig. 2). In the example shown, two of the three nozzles 30L are located within a range G in which the re-burning chamber inlet 21 is formed in the direction of the axis C of the auxiliary burner 14. Also, as shown in Fig. 4, the multiple nozzles 30R may include at least one nozzle 30R located within a range G in which the re-burning chamber inlet 21 is formed in the direction of the axis C of the auxiliary burner 14 (the front-to-rear direction in the example shown in Fig. 2). In the example shown, two of the three nozzles 30R are located within a range G in which the re-burning chamber inlet 21 is formed in the direction of the axis C of the auxiliary burner 14.

[0027] 4, multiple nozzles 30L arranged on the side wall 28 along the axis C of the auxiliary burner 14 inject exhaust gas supplied from the exhaust gas supply line 36 in a direction d1 intersecting the axis C of the auxiliary burner 14 toward the flame F formed by the auxiliary burner 14, so compared to the configuration shown in Fig. 2, soot that has flowed into the re-burning chamber 12 from the re-burning chamber inlet 21 can be prevented from passing beside the flame F of the auxiliary burner 14 (more specifically, the space S1 between the flame F and the side wall 28) over a wide area in the axis C of the auxiliary burner 14. Therefore, harmful substances contained in the soot generated in the main combustion chamber 4 can be more effectively neutralized.

[0028] Furthermore, the multiple nozzles 30R arranged on the side wall 29 along the axis C of the auxiliary burner 14 inject the exhaust gas supplied from the exhaust gas supply line 36 in a direction d2 intersecting the axis C of the auxiliary burner 14 towards the flame F formed by the auxiliary burner 14, so compared to the configuration shown in Fig. 2, it is possible to prevent soot that has flowed into the re-burning chamber 12 from the re-burning chamber inlet 21 from passing beside the flame F of the auxiliary burner 14 (more specifically, the space S2 between the flame F and the side wall 29) over a wide area in the axis C of the auxiliary burner 14. Therefore, harmful substances contained in the soot generated in the main combustion chamber 4 can be more effectively neutralized.

[0029] In addition, since at least one nozzle 30L is provided within the range G in which the re-burning chamber inlet 21 is formed in the direction of the axis C of the auxiliary burner 14, the exhaust gas sprayed from the nozzle 30L located within the range G can effectively prevent soot flowing upward from the re-burning chamber inlet 21 from passing beside the flame F of the auxiliary burner 14 (more specifically, the space S1 between the flame F and the side wall 28).

[0030] In addition, since at least one nozzle 30R is provided within the range G in which the re-burning chamber inlet 21 is formed in the direction of the axis C of the auxiliary burner 14, the exhaust gas injected from the nozzle 30R located within the range G can effectively prevent soot flowing upward from the re-burning chamber inlet 21 from passing beside the flame F of the auxiliary burner 14 (more specifically, the space S2 between the flame F and the side wall 29).

[0031] In some embodiments, the shape of the outlet of each of the nozzle 30L and the nozzle 30R shown in Figure 2 etc. may be flat, for example, as shown in Figure 5. In Figure 5, the nozzle 30L and the nozzle 30R will be described as "nozzle 30" without distinction.

[0032] 5, the dimension W of the outlet 40 of the nozzle 30 in the direction of the axis C of the auxiliary burner 14 is larger than the dimension H of the outlet 40 of the nozzle 30 in the direction K perpendicular to both the direction of the axis C of the auxiliary burner 14 and the direction of the axis E of the nozzle 30. Here, the axis E of the nozzle 30 is the center line of the nozzle 30, and the nozzle 30 is configured to inject the exhaust gas along the axis E of the nozzle 30.

[0033] This makes it possible to form an exhaust gas curtain (a partition that prevents soot from passing through) with the width direction being the axis C of the auxiliary burner 14, thereby effectively preventing soot from passing through next to the flame F of the auxiliary burner 14 described above.

[0034] In some embodiments, as shown in FIG. 6, the crematorium 2 described with reference to FIG. 1 and the like may further include a nozzle 30C provided on the ceiling 26. The nozzle 30C is configured to inject exhaust gas supplied from the exhaust gas supply line 36 toward the flame F formed by the auxiliary burner 14 (downward) in a direction d3 intersecting the axial line C of the auxiliary burner 14. In the illustrated example, the direction d3 is perpendicular to the axial line C of the auxiliary burner 14, but the direction d3 may be inclined relative to the direction perpendicular to the axial line C of the auxiliary burner 14. As shown in FIG. 6, the nozzle 30C may be located within a range G in which the reburning chamber inlet 21 is formed in the axial line C direction of the auxiliary burner 14 (the front-to-rear direction in the illustrated example). In the embodiment shown in FIG. 6, the exhaust gas supply line 36 is configured to supply exhaust gas pressurized by the blower 34 to the nozzle 30C.

[0035] According to the configuration shown in Figure 6, the exhaust gas injected from the nozzle 30C can prevent soot and smoke that has flowed into the re-burning chamber 12 from passing between the flame F formed by the auxiliary burner 14 and the ceiling 26. Therefore, harmful substances contained in the soot generated in the main combustion chamber 4 can be effectively neutralized. In addition, by injecting exhaust gas with a lower oxygen concentration than air from the nozzle 30C, the combustion by the auxiliary burner 14 is slowed down, and the NOx of the crematorium 2 is reduced. x can reduce emissions.

[0036] FIG. 7 is a diagram schematically showing another example of the BB cross section (vertical cross section) of the re-burning chamber 12 in FIG.

[0037] In some embodiments, as shown in FIG. 7, side wall 28 is provided with a plurality of nozzles 26L arranged along the vertical direction, and side wall 29 is provided with a plurality of nozzles 26R arranged along the vertical direction.

[0038] 7, multiple nozzles 30L arranged vertically on the side wall 28 inject exhaust gas supplied from the exhaust gas supply line 36 in a direction d1 intersecting the axis C of the auxiliary burner 14 toward the flame F formed by the auxiliary burner 14, and therefore, compared to the configuration shown in Fig. 3, it is possible to prevent soot that has flowed into the re-burning chamber 12 from the re-burning chamber inlet 21 from passing beside the flame F of the auxiliary burner 14 (more specifically, the space S1 between the flame F and the side wall 28) over a wider area in the vertical direction. Therefore, harmful substances contained in the soot generated in the main combustion chamber 4 can be more effectively neutralized.

[0039] Furthermore, since the multiple nozzles 30R arranged vertically on the side wall 29 inject the exhaust gas supplied from the exhaust gas supply line 36 in a direction d2 intersecting the vertical direction toward the flame F formed by the auxiliary burner 14, it is possible to prevent the soot that has flowed into the re-burning chamber 12 from the re-burning chamber inlet 21 from passing beside the flame F of the auxiliary burner 14 (more specifically, the space S2 between the flame F and the side wall 29) over a wider area in the vertical direction, compared to the configuration shown in Fig. 3. Therefore, harmful substances contained in the soot generated in the main combustion chamber 4 can be more effectively neutralized.

[0040] In the example shown in Figure 7, each of the directions d1 and d2 is a direction perpendicular to the direction of the axis C of the auxiliary burner 14, but each of the directions d1 and d2 may be inclined with respect to the direction perpendicular to the direction of the axis C of the auxiliary burner 14.

[0041] Fig. 8 is a schematic cross-sectional view showing the configuration of a crematorium 2 according to another embodiment. Fig. 9 is a view showing an example of the cross section taken along line DD in Fig. 8.

[0042] In some embodiments, as shown in Figures 8 and 9, the crematorium 2 includes a plurality of nozzles 26C disposed in the ceiling 26 of the reburn chamber 12 and a plurality of nozzles 26F disposed in the floor 22 of the reburn chamber 26.

[0043] 9, multiple nozzles 26C provided on the ceiling 26 of the re-burning chamber 12 are arranged in a direction intersecting both the axial direction C of the sub-burner 14 and the vertical direction (the width direction of the re-burning chamber 12). Additionally, multiple nozzles 26F provided on the floor 22 of the re-burning chamber 12 are arranged in a direction intersecting both the axial direction C of the sub-burner 14 and the vertical direction (the width direction of the re-burning chamber 12).

[0044] According to the configuration shown in FIG. 9, a plurality of nozzles 30C arranged along the width direction of the re-burning chamber 12 on the ceiling 26 of the re-burning chamber 12 inject the exhaust gas supplied from the exhaust gas supply line 36 in a direction d3 intersecting the axis C direction of the auxiliary burner 14 toward the flame F formed by the auxiliary burner 14, so that the soot that has flowed into the re-burning chamber 12 can be prevented from passing over the flame F of the auxiliary burner 14 (more specifically, the space S3 between the flame F and the ceiling 26) over a wide area in the width direction of the re-burning chamber 12. Therefore, harmful substances contained in the soot generated in the main combustion chamber 4 can be more effectively neutralized. In addition, by injecting exhaust gas with a lower oxygen concentration than air from the nozzles 30C, the combustion by the auxiliary burner 14 is slowed down, and the NOx of the crematorium 2 is reduced. x can reduce emissions.

[0045] In addition, the plurality of nozzles 30F arranged along the width direction of the re-burning chamber 12 on the floor 22 of the re-burning chamber 12 injects the exhaust gas supplied from the exhaust gas supply line 36 in a direction d4 intersecting the axis C direction of the auxiliary burner 14 toward the flame F formed by the auxiliary burner 14, so that the soot that has flowed into the re-burning chamber 12 can be prevented from passing under the flame F of the auxiliary burner 14 (more specifically, the space S4 between the flame F and the floor 22) over a wide range in the width direction of the re-burning chamber 12. Therefore, harmful substances contained in the soot generated in the main combustion chamber 4 can be more effectively neutralized. In addition, by injecting exhaust gas with a lower oxygen concentration than air from the nozzles 30F, the combustion by the auxiliary burner 14 is slowed down, and the NOx of the crematorium 2 is reduced. x can reduce emissions.

[0046] In the example shown in Figure 7, each of the directions d3 and d4 is a direction (vertical direction) perpendicular to the direction of the axis C of the auxiliary burner 14, but each of the directions d3 and d4 may be inclined with respect to the direction (vertical direction) perpendicular to the direction of the axis C of the auxiliary burner 14.

[0047] In some embodiments, the shape of each outlet of the nozzle 30L and the nozzle 30R shown in Figure 2 etc. may be a flat shape (rectangle in the illustrated example) with the longer side extending in the vertical direction, as shown in Figure 10. In Figure 10, the nozzle 30L and the nozzle 30R will be described as "nozzle 30" without distinction between them.

[0048] In the example shown in FIG. 10, the dimension H of the outlet 40 of the nozzle 30 in the vertical direction is larger than the dimension W of the outlet 40 of the nozzle 30 in the direction of the axis C of the sub-burner 14.

[0049] This allows a curtain of exhaust gas to be formed vertically between the flame F of the auxiliary burner 14 and the side wall 28, and between the flame F of the auxiliary burner 14 and the side wall 29, thereby effectively preventing soot from passing through next to the flame F of the auxiliary burner 14 described above.

[0050] In some embodiments, the shape of each outlet of nozzle 30C and nozzle 30F shown in Figure 8 etc. may be a flat shape (rectangle in the illustrated example) with the longer side extending in the width direction of the re-burning chamber 12, as shown in Figure 11. In Figure 10, nozzle 30C and nozzle 30F will be described as "nozzle 30" without distinction.

[0051] In the example shown in Figure 11, the dimension M of the outlet 40 of the nozzle 30 in the width direction of the re-burning chamber 12 (directions perpendicular to both the axial direction and the vertical direction of the auxiliary burner) is larger than the dimension W of the outlet 40 of the nozzle 30 in the direction of the axial line C of the auxiliary burner 14.

[0052] This allows an exhaust gas curtain (a partition that prevents soot from passing through) to be formed along the width direction of the auxiliary burner 14, thereby effectively preventing soot from passing through above and below the flame F of the auxiliary burner 14 described above.

[0053] The present disclosure is not limited to the above-described embodiments, but also includes modifications to the above-described embodiments and appropriate combinations of these modifications. For example, each of the nozzles 30L and 30R described above may inject a mixture of exhaust gas and air supplied from the exhaust gas supply line 36. Even in this case, at least a portion of the soot and smoke generated in the main combustion chamber 4 and flowing into the re-burning chamber 12 can be guided toward the flame of the auxiliary burner 14 by the flow of exhaust gas and air injected from the nozzle 30L, thereby preventing the soot and smoke from passing outside the flame of the auxiliary burner 14. Therefore, harmful substances such as dioxins contained in the soot can be effectively neutralized. Similarly, the nozzle 30C described above may inject a mixture of exhaust gas and air supplied from the exhaust gas supply line 36.

[0054] Furthermore, the crematorium 2 only needs to be equipped with at least one of the nozzles 30L, 30R, 30C, and 30F, and for example, of the nozzles 30L, 30R, 30C, and 30F, it may be equipped with only the nozzle 30L, or only the nozzle 30R, or only the nozzle 30C, or only the nozzle 30F.

[0055] 5, it has been explained that the outlets of the nozzle 30L provided in the side wall 28 of the re-burning chamber 12 and the nozzle 30R provided in the side wall 29 of the re-burning chamber 12 may each have a flattened shape. However, the outlet of the nozzle 30C (the nozzle provided in the ceiling 26 of the re-burning chamber 12) shown in FIG. 6 may also have a flattened shape. In this case, the dimension of the outlet 40 of the nozzle 30C in the direction of the axis C of the auxiliary burner 14 may be larger than the dimension of the outlet 40 of the nozzle 30C in the directions perpendicular to both the axis C of the auxiliary burner 14 and the axial direction of the nozzle 30C. This makes it possible to form an exhaust gas curtain whose width direction is the axial direction of the auxiliary burner 14, thereby effectively preventing soot from passing outside the flame of the auxiliary burner 14.

[0056] The contents described in each of the above embodiments can be understood, for example, as follows.

[0057] [1] At least one embodiment of the crematorium according to the present disclosure (e.g., the crematorium 2 described above) includes: A main combustion chamber (e.g., the main combustion chamber 4 described above) for burning the cremation object (e.g., the cremation object 10 described above); A main burner (for example, the above-mentioned main burner 6) provided in the main combustion chamber; a re-burning chamber (for example, the above-mentioned re-burning chamber 12) communicating with the main combustion chamber; an auxiliary burner (e.g., the auxiliary burner 14 described above) provided in the reburning chamber and configured to reburn soot that flows from the main combustion chamber into the reburning chamber; At least one nozzle (for example, at least one of the nozzles 30L, 30R, 30C, and 30F) provided in the reburning chamber; Equipped with.

[0058] According to the crematorium described in [1] above, at least a portion of the soot and smoke generated in the main combustion chamber and flowing into the re-burning chamber can be guided to the flame of the auxiliary burner by the flow of exhaust gas injected from the nozzle, so that the soot and smoke can be prevented from passing outside the flame of the auxiliary burner. Therefore, harmful substances such as dioxins contained in the soot can be effectively neutralized. In addition, by injecting exhaust gas with a lower oxygen concentration than air from the nozzle, the combustion by the auxiliary burner is slowed down, and the NOx of the crematorium can be reduced. x emissions can be reduced.

[0059] [2] In some embodiments, in the crematorium described in [1] above, The re-burning chamber includes a rear wall (for example, the above-mentioned rear wall 20) on which the auxiliary burner is provided, a front wall (for example, the above-mentioned front wall 24) facing the rear wall, a first side wall (for example, the above-mentioned side wall 28) connecting the rear wall and the front wall, and a second side wall (for example, the above-mentioned side wall 29) facing the first side wall and connecting the rear wall and the front wall, The at least one nozzle includes at least one nozzle provided in the first side wall (for example, the above-mentioned nozzle 30L) and at least one nozzle provided in the second side wall (for example, the above-mentioned nozzle 30R).

[0060] According to the crematorium described in [2] above, at least a portion of the soot, etc., generated in the main combustion chamber and flowing into the re-burning chamber, flowing near the first side wall, can be guided to the flame of the auxiliary burner by gas injected from a nozzle provided on the first side wall, so that the soot, etc., can be prevented from passing beside the flame of the auxiliary burner (more specifically, the space between the flame and the first side wall) by the injection of gas from the nozzle provided on the first side wall. Also, at least a portion of the soot, etc., generated in the main combustion chamber and flowing into the re-burning chamber, flowing near the second side wall, can be guided to the flame of the auxiliary burner by gas injected from a nozzle provided on the second side wall, so that the soot, etc., can be prevented from passing beside the flame of the auxiliary burner (more specifically, the space between the flame and the second side wall) by the injection of gas from the nozzle provided on the second side wall. Therefore, harmful substances such as dioxins contained in the soot can be effectively rendered harmless.

[0061] [3] In some embodiments, in the crematorium described in [2] above, the at least one nozzle provided in the first side wall includes a plurality of the nozzles (for example, the plurality of nozzles 30L described above) arranged along the axial direction of the auxiliary burner; The at least one nozzle provided in the second side wall includes a plurality of the nozzles (for example, the above-mentioned plurality of nozzles 30R) arranged along the axial direction of the auxiliary burner.

[0062] According to the crematorium described in [3] above, the multiple nozzles arranged on the first side wall along the axial direction of the auxiliary burner inject gas toward the flame formed by the auxiliary burner in a direction intersecting the axial direction of the auxiliary burner, thereby preventing soot flowing into the reburning chamber from passing beside the flame of the auxiliary burner (more specifically, the space between the flame and the first side wall) over a wide area in the axial direction of the auxiliary burner. Furthermore, the multiple nozzles arranged on the second side wall along the axial direction of the auxiliary burner inject gas toward the flame formed by the auxiliary burner in a direction intersecting the axial direction of the auxiliary burner, thereby preventing soot flowing into the reburning chamber from passing beside the flame of the auxiliary burner (more specifically, the space between the flame and the second side wall) over a wide area in the axial direction of the auxiliary burner. Therefore, harmful substances contained in the soot generated in the main combustion chamber can be more effectively neutralized.

[0063] [4] In some embodiments, in the crematorium described in [1] above, The at least one nozzle includes a plurality of the nozzles (for example, the above-mentioned plurality of nozzles 30L and plurality of nozzles 30R) arranged along the axial direction of the auxiliary burner.

[0064] According to the crematorium described in [4] above, multiple nozzles arranged along the axis of the auxiliary burner inject gas in a direction intersecting the axis of the auxiliary burner toward the flame formed by the auxiliary burner, so that the soot that has flowed into the re-burning chamber can be prevented from passing outside the flame of the auxiliary burner over a wide area along the axis of the auxiliary burner. Therefore, harmful substances contained in the soot generated in the main combustion chamber can be more effectively neutralized.

[0065] [5] In some embodiments, in the crematorium described in [1] above, the reburn chamber includes a reburn chamber inlet (e.g., the reburn chamber inlet 21 described above) for receiving the soot generated in the main combustion chamber into the reburn chamber; The at least one nozzle includes at least one nozzle (e.g., the above-mentioned nozzles 30L, 30R, 30C) provided within the range (e.g., the above-mentioned range G) in which the re-burning chamber entrance is formed in the axial direction of the auxiliary burner.

[0066] According to the crematorium described in [5] above, the gas injected from the nozzle located within the axial direction of the auxiliary burner, prevents the soot flowing into the reburning chamber from passing through the outside of the flame of the auxiliary burner. Therefore, harmful substances contained in the soot generated in the main combustion chamber can be more effectively neutralized.

[0067] [6] In some embodiments, in the crematorium described in [3] above, the reburn chamber includes a reburn chamber inlet (e.g., the reburn chamber inlet 21 described above) for receiving the soot generated in the main combustion chamber into the reburn chamber; the plurality of nozzles provided in the first side wall include at least one nozzle provided within a range in which the re-burning chamber inlet is formed in the axial direction of the auxiliary burner (for example, the above-mentioned range G); The plurality of nozzles provided in the second side wall include at least one nozzle provided within a range (for example, the above-mentioned range G) in which the re-burning chamber entrance is formed in the axial direction of the auxiliary burner.

[0068] According to the crematorium described in [6] above, at least one nozzle is provided in the first side wall within the range in which the reburning chamber inlet is formed in the axial direction of the auxiliary burner, so that the gas injected from the nozzle located within this range can effectively prevent the soot flowing upward from the reburning chamber inlet from passing beside the auxiliary burner flame (more specifically, the space between the flame and the first side wall). Furthermore, at least one nozzle is provided in the second side wall within the range in which the reburning chamber inlet is formed in the axial direction of the auxiliary burner, so that the gas injected from the nozzle located within this range can effectively prevent the soot flowing upward from the reburning chamber inlet from passing beside the auxiliary burner flame (more specifically, the space between the flame and the second side wall). Therefore, harmful substances contained in the soot generated in the main combustion chamber can be more effectively neutralized.

[0069] [7] In some embodiments, in the crematorium according to any one of [1] to [6] above, The dimension of the nozzle outlet in the axial direction of the auxiliary burner (e.g., the above-mentioned dimension W) is larger than the dimension of the nozzle outlet in a direction perpendicular to each of the axial direction of the auxiliary burner and the axial direction of the nozzle (e.g., the above-mentioned dimension H).

[0070] According to the crematorium described in [7] above, the nozzle (the nozzle outlet dimension in the axial direction of the auxiliary burner is larger than the nozzle outlet dimension in the directions perpendicular to both the axial direction of the auxiliary burner and the axial direction of the nozzle) can form a gas curtain whose width is in the axial direction of the auxiliary burner, which effectively prevents soot from passing outside the flame of the auxiliary burner. Therefore, harmful substances contained in the soot generated in the main combustion chamber can be more effectively neutralized.

[0071] [8] In some embodiments, in the crematorium described in [2] above, the at least one nozzle provided in the first side wall includes a plurality of nozzles arranged along a vertical direction; The at least one nozzle provided in the second side wall includes a plurality of the nozzles arranged along the vertical direction.

[0072] According to the crematorium described in [8] above, multiple nozzles arranged vertically on the first side wall inject exhaust gas supplied from the exhaust gas supply line toward the flame formed by the auxiliary burner in a direction intersecting the axial direction of the auxiliary burner, thereby preventing soot flowing into the reburning chamber from passing beside the auxiliary burner flame (more specifically, the space between the flame and the first side wall) over a wide vertical area. Furthermore, multiple nozzles arranged vertically on the second side wall inject exhaust gas supplied from the exhaust gas supply line toward the flame formed by the auxiliary burner in a direction intersecting the axial direction of the auxiliary burner, thereby preventing soot flowing into the reburning chamber from passing beside the auxiliary burner flame (more specifically, the space between the flame and the second side wall) over a wide vertical area. Therefore, harmful substances contained in the soot generated in the main combustion chamber can be more effectively neutralized.

[0073] [9] In some embodiments, in the crematorium described in [1] above, The at least one nozzle includes at least one nozzle (for example, the above-mentioned nozzle 30C) provided in the ceiling of the reburning chamber (for example, the above-mentioned ceiling 26).

[0074] According to the crematorium described in [9] above, at least a portion of the soot generated in the main combustion chamber and flowing into the re-burning chamber that flows near the ceiling can be guided to the flame of the auxiliary burner by gas injected from a nozzle installed in the ceiling, so that the soot can be prevented from passing outside the flame of the auxiliary burner (more specifically, the space between the flame and the ceiling) by the injection of gas from the nozzle installed in the ceiling. Therefore, harmful substances such as dioxins contained in the soot can be effectively neutralized.

[0075]

[10] In some embodiments, in the crematorium described in [9] above, The at least one nozzle provided on the ceiling includes a plurality of nozzles arranged along a direction intersecting both the axial direction and the vertical direction of the auxiliary burner.

[0076] According to the crematorium described in

[10] above, multiple nozzles arranged on the ceiling of the reburning chamber along directions intersecting the axial and vertical directions of the auxiliary burner inject exhaust gas supplied from the exhaust gas supply line toward the flame formed by the auxiliary burner in a direction intersecting the axial direction of the auxiliary burner, thereby preventing soot that has flowed into the reburning chamber from passing over the flame of the auxiliary burner (more specifically, the space between the flame and the ceiling) over a wide area in directions intersecting the axial and vertical directions of the auxiliary burner. Therefore, harmful substances contained in the soot generated in the main combustion chamber can be more effectively neutralized.

[0077]

[11] In some embodiments, in the crematorium described in [1] above, The at least one nozzle includes at least one nozzle disposed in the floor of the reburning chamber (eg, nozzle 30F described above).

[0078] According to the crematorium described in

[11] above, at least a portion of the soot and smoke generated in the main combustion chamber and flowing into the reburning chamber, which flows near the floor of the reburning chamber, can be guided to the flame of the auxiliary burner by the exhaust gas injected from the nozzle installed in the floor, so that the soot and smoke can be prevented from passing outside the flame of the auxiliary burner (more specifically, the space between the flame and the floor) by the injection of exhaust gas from the nozzle installed in the floor. Therefore, harmful substances such as dioxins contained in the soot can be effectively neutralized.

[0079]

[12] In some embodiments, the crematorium according to

[11] above, At least one of the nozzles provided on the floor includes a plurality of the nozzles arranged along a direction intersecting each of the axial direction and vertical direction of the auxiliary burner (for example, the width direction of the above-mentioned reburning chamber 12).

[0080] According to the crematorium described in

[12] above, a plurality of nozzles arranged on the floor of the reburning chamber along directions intersecting the axial and vertical directions of the auxiliary burner inject exhaust gas supplied from the exhaust gas supply line in a direction intersecting the axial direction of the auxiliary burner toward the flame formed by the auxiliary burner, so that the soot that has flowed into the reburning chamber can be prevented from passing under the flame of the auxiliary burner (more specifically, the space between the flame and the floor) over a wide range in the width direction of the reburning chamber 12. Therefore, harmful substances contained in the soot generated in the main combustion chamber 4 can be more effectively neutralized.

[0081]

[13] In some embodiments, in the crematorium described in [1] above, The at least one nozzle includes a plurality of the nozzles (e.g., the plurality of nozzles 30C described above) provided on the ceiling of the reburning chamber and a plurality of the nozzles (e.g., the plurality of nozzles 30F described above) provided on the floor of the reburning chamber; the plurality of nozzles provided on the ceiling of the re-burning chamber are arranged along a direction intersecting each of the axial direction and the vertical direction of the auxiliary burner, The plurality of nozzles provided on the floor of the reburning chamber are arranged along a direction intersecting both the axial direction and the vertical direction of the auxiliary burner.

[0082] According to the crematorium described in

[13] above, it is possible to prevent the soot that has flowed into the reburning chamber from passing above and below the flame of the auxiliary burner (more specifically, the space between the flame and the ceiling and the space between the flame and the floor) over a wide area in directions intersecting the axial and vertical directions of the auxiliary burner. Therefore, it is possible to more effectively neutralize the harmful substances contained in the soot generated in the main combustion chamber.

[0083]

[14] In some embodiments, in the crematorium described in [2] above, In the nozzle provided in the first side wall, a dimension of the outlet of the nozzle in a vertical direction (e.g., the above-mentioned dimension H) is larger than a dimension of the outlet of the nozzle in an axial direction of the auxiliary burner (e.g., the above-mentioned dimension W), In the nozzle provided in the second side wall, the dimension of the outlet of the nozzle in the vertical direction (for example, the above-mentioned dimension H) is larger than the dimension of the outlet of the nozzle in the axial direction of the auxiliary burner (for example, the above-mentioned dimension W).

[0084] According to the crematorium described in

[14] above, a curtain of exhaust gas (a partition that prevents soot from passing through) can be formed vertically between the flame of the auxiliary burner and the first side wall and between the flame of the auxiliary burner and the second side wall, so that the curtain of exhaust gas can effectively prevent soot from passing through next to the flame of the auxiliary burner.

[0085]

[15] In some embodiments, in the crematorium described in [1] above, the at least one nozzle includes a nozzle provided in a ceiling of the reburning chamber and a nozzle provided in a floor of the reburning chamber; In the nozzle provided on the ceiling of the re-burning chamber, a dimension of the outlet of the nozzle in a direction perpendicular to each of the axial direction and the vertical direction of the auxiliary burner (e.g., the above-mentioned dimension M) is larger than a dimension of the outlet of the nozzle in the axial direction of the auxiliary burner (e.g., the above-mentioned dimension W), In the nozzle provided on the floor of the reburning chamber, the dimension of the nozzle outlet in a direction perpendicular to each of the axial direction and vertical direction of the auxiliary burner (e.g., the above-mentioned dimension M) is larger than the dimension of the nozzle outlet in the axial direction of the auxiliary burner (e.g., the above-mentioned dimension W).

[0086] According to the crematorium described in

[15] above, a curtain of exhaust gas (a partition that prevents soot from passing through) can be formed between the flame of the auxiliary burner and the ceiling, and between the flame of the auxiliary burner and the floor, along a direction perpendicular to the axial direction and vertical direction of the auxiliary burner, so that the curtain of exhaust gas can effectively prevent soot from passing through above and below the flame of the auxiliary burner. [Explanation of symbols]

[0087] 2 Crematorium 4 Main combustion chamber 6 Main Burner 8 flue 8a First flow path section 8b Second flow path section 8c Third flow path section 10 Cremation eligible 12 Reburning chamber 14 Sub-burner 15 Doors 16,20 Back wall 18,26 Ceiling 19 Main combustion chamber outlet 21 Reburning chamber entrance 22 beds 23 Reburning chamber outlet 24 Front wall 28,29 side wall 30, 30C, 30F, 30L, 30R nozzles 34 Blower 36 Exhaust gas supply line 40 exit

Claims

1. a main combustion chamber for burning the cremated remains; a main burner provided in the main combustion chamber; a re-burning chamber communicating with the main combustion chamber; an auxiliary burner provided in the reburning chamber and configured to reburn soot that flows from the main combustion chamber into the reburning chamber; at least one nozzle provided in the reburning chamber; an exhaust gas supply line configured to supply a portion of the exhaust gas discharged from the reburning chamber to the at least one nozzle; Equipped with The at least one nozzle is configured to inject the exhaust gas supplied from the exhaust gas supply line toward the flame formed by the auxiliary burner in a direction intersecting the axial direction of the auxiliary burner.

2. the re-burning chamber includes a rear wall in which the auxiliary burner is provided, a front wall facing the rear wall, a first side wall connecting the rear wall and the front wall, and a second side wall facing the first side wall and connecting the rear wall and the front wall, 2. The crematorium of claim 1, wherein the at least one nozzle includes at least one nozzle disposed in the first side wall and at least one nozzle disposed in the second side wall.

3. the at least one nozzle provided in the first side wall includes a plurality of nozzles arranged along an axial direction of the auxiliary burner, 3. The crematorium of claim 2, wherein the at least one nozzle provided in the second side wall includes a plurality of nozzles arranged along the axial direction of the auxiliary burner.

4. 2. The crematorium of claim 1, wherein the at least one nozzle comprises a plurality of the nozzles arranged along the axial direction of the auxiliary burner.

5. the reburn chamber includes a reburn chamber inlet for receiving the soot generated in the main combustion chamber into the reburn chamber; The crematorium according to claim 1, wherein the at least one nozzle includes at least one nozzle provided within a range in which the reburning chamber inlet is formed in the axial direction of the auxiliary burner.

6. the reburn chamber includes a reburn chamber inlet for receiving the soot generated in the main combustion chamber into the reburn chamber; the plurality of nozzles provided in the first side wall include at least one nozzle provided within a range in which the re-burning chamber inlet is formed in the axial direction of the auxiliary burner, The crematorium according to claim 3, wherein the plurality of nozzles provided in the second side wall include at least one nozzle provided within a range in which the reburning chamber inlet is formed in the axial direction of the auxiliary burner.

7. 2. The crematorium of claim 1, wherein the dimension of the outlet of the nozzle in the axial direction of the auxiliary burner is greater than the dimension of the outlet of the nozzle in a direction perpendicular to each of the axial direction of the auxiliary burner and the axial direction of the nozzle.

8. the at least one nozzle provided in the first side wall includes a plurality of nozzles arranged along a vertical direction; The crematorium of claim 2, wherein the at least one nozzle provided in the second side wall includes a plurality of nozzles arranged along the vertical direction.

9. 2. The crematorium of claim 1, wherein the at least one nozzle comprises at least one nozzle provided in the ceiling of the reburn chamber.

10. The crematorium according to claim 9, wherein the at least one nozzle provided on the ceiling includes a plurality of nozzles arranged along a direction intersecting each of the axial direction and the vertical direction of the auxiliary burner.

11. 2. The crematorium of claim 1, wherein the at least one nozzle comprises at least one nozzle disposed in the floor of the reburning chamber.

12. The crematorium according to claim 11, wherein the at least one nozzle provided on the floor includes a plurality of nozzles arranged along a direction intersecting each of the axial direction and the vertical direction of the auxiliary burner.

13. the at least one nozzle includes a plurality of nozzles provided in a ceiling of the reburning chamber and a plurality of nozzles provided in a floor of the reburning chamber; the plurality of nozzles provided on the ceiling of the re-burning chamber are arranged along a direction intersecting each of the axial direction and the vertical direction of the auxiliary burner, 2. The crematorium according to claim 1, wherein the plurality of nozzles provided on the floor of the reburning chamber are arranged along a direction intersecting both the axial direction and the vertical direction of the auxiliary burner.

14. the nozzle provided in the first side wall has an outlet dimension in a vertical direction larger than an outlet dimension in an axial direction of the auxiliary burner; 3. The crematorium according to claim 2, wherein the nozzle provided in the second side wall has a dimension of the outlet of the nozzle in the vertical direction that is greater than a dimension of the outlet of the nozzle in the axial direction of the auxiliary burner.

15. the at least one nozzle includes a nozzle provided in a ceiling of the reburning chamber and a nozzle provided in a floor of the reburning chamber; the nozzle provided on the ceiling of the re-burning chamber has an outlet dimension in a direction perpendicular to each of the axial direction and the vertical direction of the auxiliary burner that is larger than the outlet dimension of the nozzle in the axial direction of the auxiliary burner; 2. The crematorium according to claim 1, wherein the nozzle provided on the floor of the reburning chamber has an outlet dimension in a direction perpendicular to each of the axial direction and the vertical direction of the auxiliary burner that is larger than the outlet dimension of the nozzle in the axial direction of the auxiliary burner.

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