Incineration system, incineration method, and incinerator

Abstract

To provide an incineration system, an incineration method, and an incinerator that allow conveyance of an object to be incinerated inside an incinerator and removal of residue from the incinerator without use of power.SOLUTION: An incineration system including an incinerator, wherein the incinerator has a combustion chamber for combusting an object to be combusted, an input port for charging the object to be combusted into the combustion chamber, and a discharge port for discharging residue generated by combustion of the object to be combusted from the combustion chamber, and a combustion surface, which is a bottom surface of a combustion portion where combustion of the object to be combusted is performed in the combustion chamber, is inclined such that the height on the side of the input port is higher than the height on the side of the discharge port, and the inclination angle of the combustion surface with respect to a horizontal direction is an angle larger than an angle of repose of the residue and smaller than an angle of repose of the object to be combusted.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an incineration system, an incineration method, and an incinerator. [Background technology]

[0002] BACKGROUND ART Various incineration systems equipped with incinerators for incinerating sewage sludge (hereinafter also referred to simply as sludge or material to be combusted) have been proposed (see Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-181311 [Patent Document 2] Japanese Patent Application Publication No. 8-261427 Summary of the Invention [Problem to be solved by the invention]

[0004] In the incineration system described above, it is desirable to transport the materials to be burned after combustion without using power, for example. [Means for solving the problem]

[0005] The incineration system of the present disclosure is an incineration system equipped with an incinerator, which has a combustion chamber for burning the material to be combusted, an inlet for feeding the material to be combusted into the combustion chamber, and an outlet for discharging residue generated by the combustion of the material to be combusted from the combustion chamber, and the combustion surface, which is the bottom surface of the combustion section in the combustion chamber where the material to be combusted is combusted, is inclined so that the height on the inlet side is higher than the height on the outlet side, and the inclination angle of the combustion surface with respect to the horizontal direction is greater than the angle of repose of the residue and smaller than the angle of repose of the material to be combusted. [Effects of the Invention]

[0006] The incineration system, incineration method, and incinerator disclosed herein make it possible to transport the material to be combusted after combustion has taken place. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a front view of an incineration system 1000 according to the first embodiment. [Figure 2] FIG. 2 is a cross-sectional view of the incineration system 1000 according to the first embodiment taken along the line AA. [Figure 3] FIG. 3 is a detailed configuration diagram of the combustion chamber 10 in the first embodiment. [Figure 4] FIG. 4 is a detailed configuration diagram of the combustion chamber 10 in the first embodiment. [Figure 5] FIG. 5 is a detailed configuration diagram of the combustion chamber 10 in the first embodiment. [Figure 6] FIG. 6 is a detailed configuration diagram of the combustion chamber 10 in the first embodiment. [Figure 7] FIG. 7 is a detailed configuration diagram of the combustion chamber 10 in the first embodiment. [Figure 8] FIG. 8 is a detailed configuration diagram of the combustion chamber 10 in the first embodiment. [Figure 9] FIG. 9 is a diagram illustrating the hardware configuration of the control device 500. As shown in FIG. [Figure 10] FIG. 10 is a diagram illustrating the function of the control device 500. [Figure 11] FIG. 11 is a flowchart illustrating the residue discharge control in the first embodiment. [Figure 12] FIG. 12 is a flowchart illustrating air supply control in the first embodiment. [Figure 13] FIG. 13 is a detailed configuration diagram of the combustion chamber 10 in the first modified example. [Figure 14] FIG. 14 is a detailed configuration diagram of the combustion chamber 10 in the first modified example. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. However, such descriptions should not be interpreted in a limiting sense, and do not limit the subject matter described in the claims. Furthermore, various changes, substitutions, and modifications can be made without departing from the spirit and scope of the present disclosure. Furthermore, different embodiments can be combined as appropriate.

[0009] [Incineration system 1000 according to the first embodiment] First, an incineration system 1000 according to the first embodiment will be described. Figures 1 and 2 are configuration diagrams of the incineration system 1000 according to the first embodiment. Specifically, Figure 1 is a front view of the incineration system 1000 according to the first embodiment. Also, Figure 2 is a cross-sectional view of the incineration system 1000 according to the first embodiment taken along line AA.

[0010] The incineration system 1000 includes, for example, an incinerator 100, as shown in FIG.

[0011] The incinerator 100 has, for example, a combustion chamber 10 for incinerating sludge 1, a post-combustion chamber 20 for burning gas generated by the combustion of the sludge 1 in the combustion chamber 10, a supply section 30 for supplying sludge 1 to the combustion chamber 10, and a discharge section 40 for discharging exhaust gas from the post-combustion chamber 20.

[0012] First, a description will be given of the supply unit 30. The supply unit 30 has, for example, a supply pipe 31, an input pipe 32, and a pusher 33.

[0013] The supply pipe 31 is, for example, a pipe extending along the Z-axis direction, and is a pipe through which the sludge 1 is supplied from a preceding equipment such as a dryer (not shown) by a pump (not shown).

[0014] The input pipe 32 is, for example, a pipe extending along the X-axis direction and communicating with one end (one end on the Z2-direction side) of the input pipe 31 at a supply port 32a provided on the Z1-direction side. Then, as shown by the solid arrow in Fig. 1, for example, the sludge 1 in the input pipe 31 is sequentially supplied from the supply port 32a to the input pipe 32. Thereafter, as shown by the solid arrow in Fig. 1, for example, the sludge 1 supplied into the input pipe 32 is sequentially introduced into the combustion chamber 10 from an input port 32b (input port 32b communicating with the inside of the combustion chamber main body 11) opening toward the X2-direction side by the sliding of a pusher 33 that is slidable along the X-axis direction inside the input pipe 32.

[0015] Specifically, for example, when sludge 1 is supplied from supply pipe 31 to input pipe 32, pusher 33 slides toward the X1 direction so that its tip (the end on the X2 direction side) moves to a position on the X1 direction side of the position of supply pipe 31 in the X-axis direction. Then, after the sliding of pusher 33 toward the X1 direction side is completed, the sludge 1 in supply pipe 31 is sequentially supplied into input pipe 32, for example, in conjunction with the opening and closing of a valve (not shown) provided at supply port 32a. Thereafter, pusher 33 slides toward the X2 direction so that its tip (the end on the X2 direction side) moves to a position on the X2 direction side of the position of supply pipe 31 in the X-axis direction, thereby inputting the sludge 1 in input pipe 32 into combustion chamber 10.

[0016] That is, the sludge 1 supplied from the supply pipe 31 into the input pipe 32 is input into the combustion chamber 10 from the input port 32b, for example, by the tip of the pusher 33 pushing the sludge 1 in the input pipe 32 in the X2 direction.

[0017] The pusher 33 may be slid along the X-axis direction by being driven by a motor (not shown), for example.

[0018] Next, a description will be given of the combustion chamber 10. The combustion chamber 10 has, for example, a combustion chamber body 11 and an exhaust portion 12.

[0019] The combustion chamber body 11 is provided, for example, on the X2 side of the supply unit 30, and forms the wall surface of the combustion chamber 10 (the wall surface of the incinerator 100 on the Z2 side). Then, in the internal space of the combustion chamber body 11, for example, the sludge 1 introduced from the introduction pipe 32 is combusted. Hereinafter, the part of the internal space of the combustion chamber body 11 where the sludge 1 is combusted will also be referred to as CS. Also, hereinafter, the bottom surface of the combustion unit CS (the surface on the Z2 side) will also be referred to as the combustion surface CSa.

[0020] Specifically, for example, when sludge 1 introduced from the introduction pipe 32 falls directly onto the bottom surface 11a of the combustion chamber body 11 and the sludge 1 is directly combusted on the bottom surface 11a of the combustion chamber body 11, the combustion surface CSa corresponds to the upper surface of the bottom surface 11a (the surface on the Z1 direction side). Also, when granular matter (not shown) is piled up on the bottom surface 11a, and sludge 1 introduced from the introduction pipe 32 falls onto the layer of granular matter, and the sludge 1 is further combusted on the layer of granular matter, the combustion surface CSa corresponds to the upper surface of the layer of granular matter (the surface on the Z1 direction side).

[0021] Then, the sludge 1 that is introduced from the introduction pipe 32 and falls onto the combustion surface CSa is combusted, for example, on the combustion surface CSa.

[0022] Here, the combustion surface CSa is formed so as to be inclined at a predetermined angle (hereinafter also referred to as a first angle) with respect to the XY plane (horizontal direction), for example.

[0023] Specifically, the combustion surface CSa is set so that, for example, a first angle, which is the inclination angle of the combustion surface CSa with respect to the horizontal direction (X-axis direction), is larger than the angle of repose of the residue 1a (incineration ash 1a) generated by burning the sludge 1. In addition, the combustion surface CSa is set so that, for example, the first angle, which is the inclination angle of the combustion surface CSa with respect to the horizontal direction (X-axis direction), is smaller than the angle of repose of the sludge 1 introduced from the introduction pipe 32.

[0024] That is, the inclination angle of the combustion surface CSa with respect to the horizontal direction (X-axis direction) is adjusted, for example, so that, of the sludge 1 (sludge 1 that has fallen onto the combustion surface CSa) that has been introduced into the combustion chamber body 11, residue 1a for which combustion has progressed moves (falls) further on the combustion surface CSa toward the X2 direction and then the Z2 direction, and so that sludge 1 for which combustion has not yet progressed sufficiently does not move on the combustion surface CSa. In other words, the inclination angle of the combustion surface CSa with respect to the horizontal direction (X-axis direction) is adjusted, for example, so that only residue 1a that needs to be discharged from the combustion chamber 10 moves on the combustion surface CSa.

[0025] As a result, in the incineration system 1000 of this embodiment, for example, it becomes possible to transfer the residue 1a within the incinerator 100 without using power.

[0026] As shown in FIG. 2, the wall surface of the combustion chamber body 11 on the Y1 side will also be referred to as wall surface 11b, and the wall surface of the combustion chamber body 11 on the Y2 side will also be referred to as wall surface 11c.

[0027] Returning to Figure 1, the discharge section 12 is provided, for example, on the X2 side of the combustion chamber main body 11 and on the Z2 side, and temporarily accumulates the residue 1a that has moved on the combustion surface CSa, and then discharges it outside the incinerator 100 from the discharge outlet 12a provided at the lower end (the end on the Z2 side).

[0028] Specifically, the sludge 1 accumulated in the discharge section 12 is sequentially discharged to the outside of the incinerator 100, for example, as a valve (not shown) provided at the discharge port 12a is opened and closed.

[0029] Next, a description will be given of the post-combustion chamber 20. The post-combustion chamber 20 has, for example, a post-combustion chamber main body 21.

[0030] The post-combustion chamber body 21 is provided, for example, above the combustion chamber body 11 (on the Z1 side), and forms the wall surface of the combustion chamber 10 (the wall surface of the incinerator 100 on the Z1 side). The internal space of the post-combustion chamber body 21 is connected to the internal space of the combustion chamber body 11, and the gas generated in association with the combustion of the sludge 1 in the combustion chamber body 11 (combustion section CS) is combusted in the internal space.

[0031] That is, the gas generated in association with the combustion of the sludge 1 in the combustion chamber body 11 rises, for example, from inside the combustion chamber body 11 toward inside the post-combustion chamber body 21, as shown by the dotted arrow in Fig. 1. Then, the post-combustion chamber body 21 completely combusts the gas that has risen from inside the combustion chamber body 11, for example.

[0032] As a result, in the incineration system 1000 of this embodiment, it becomes possible, for example, to suppress the generation of CO contained in the gas generated by the combustion of sludge 1 in the combustion chamber main body 11, and further to decompose N2O contained in the gas generated by the combustion of sludge 1 in the combustion chamber main body 11.

[0033] Next, a description will be given of the discharge unit 40. The discharge unit 40 has a discharge pipe 41, for example.

[0034] The discharge pipe 41 is, for example, a pipe extending along the X-axis direction and communicating with the wall surface (wall surface on the X2 direction side) of the post-combustion chamber main body 21 on the X1 direction side. As shown by the dotted arrow in Fig. 1 , the discharge pipe 41 is supplied with exhaust gas discharged from the post-combustion chamber main body 21 via, for example, an exhaust port 41a. Thereafter, the exhaust gas discharged from the post-combustion chamber main body 21 via the exhaust port 41a is passed through, for example, a white smoke prevention air preheater (not shown) that generates heated air (white smoke prevention air) that prevents water vapor in the exhaust gas from appearing as white smoke, a dust collector (not shown) that collects impurities in the exhaust gas, or a filter (not shown) that removes SO2 in the exhaust gas by contacting it with water. X The smoke is then transferred to a smoke washing tower (not shown) where the components such as the above are removed.

[0035] [Details of the combustion chamber 10 in the first embodiment] Next, details of the combustion chamber 10 in the first embodiment will be described. Figures 3 to 8 are detailed configuration diagrams of the combustion chamber 10 in the first embodiment. Below, a case where particulate matter is deposited on the bottom surface 11a will be described.

[0036] As shown in FIG. 3, a weir portion 18, for example, is provided on the bottom surface 11a of the combustion chamber body 11.

[0037] Weir portion 18 is, for example, a member that protrudes upward (toward the Z1 direction) from bottom surface 11a and extends to each of wall surface 11b and wall surface 11c. Specifically, weir portion 18 may be, for example, a plate-like member that extends on the YZ plane.

[0038] Then, in the space defined by the wall surface on the inlet 32b side of the weir section 18 (the wall surface on the X1 direction side), the bottom surface 11a, the wall surface 11b, and the wall surface 11c, for example, granular material is deposited (filled) to form a filled section 2 made of a layer of granular material, as shown in Fig. 3. The granular material may be, for example, sand.

[0039] That is, the granular material is deposited on the bottom surface 11a while being blocked by the dam portion 18. Therefore, the granular material can form the filling portion 2 without moving (falling) on ​​the bottom surface 11a toward the discharge port 12a side (X2 direction and Z2 direction side).

[0040] Therefore, in the incineration system 1000 of this embodiment, for example, the sludge 1 introduced from the inlet 32b can be prevented from suddenly falling toward the discharge outlet 12a (the X2 direction side and the Z2 direction side) by allowing the sludge 1 introduced from the inlet 32b to fall onto the surface of the filling section 2. Therefore, in the incineration system 1000, for example, it can be prevented that the sludge 1 that has not been sufficiently combusted (sludge 1 before becoming residue 1a) is discharged from the discharge outlet 12a.

[0041] Furthermore, in the incineration system 1000 of this embodiment, compared to, for example, a case where the filling section 2 is not formed on the bottom surface 11a, it is possible to create a condition in which the sludge 1 introduced from the inlet 32b becomes integrated with the granular material and moves easily toward the discharge outlet 12a side (X2 direction side and Y2 direction side), thereby making it possible to prevent the sludge 1 introduced from the inlet 32b from remaining too long on the inlet 32b side.

[0042] Furthermore, in the incineration system 1000 of this embodiment, for example, it is possible to prevent the sludge 1 from being burned on the bottom surface 11a, and it is possible to protect the bottom surface 11a made of an iron plate or the like.

[0043] Furthermore, in the example shown in FIG. 3, the surface layer of the filling section 2 functions as, for example, the combustion surface CSa described in FIG. 1, and is formed so as to be inclined at a first angle with respect to the XY plane (horizontal direction).

[0044] Therefore, the residue 1a whose angle of repose has become smaller than the first angle as a result of the progress of combustion moves, for example, successively on the surface layer of the packing section 2. On the other hand, the sludge 1 whose combustion has not progressed sufficiently and whose angle of repose has not become smaller than the first angle continues to be combusted without moving, for example, on the surface layer of the packing section 2.

[0045] As a result, in the incineration system 1000 of this embodiment, for example, it becomes possible to transfer the residue 1a within the incinerator 100 without using power.

[0046] 3, for example, air supply pipe 15a, air supply pipe 15b, air supply pipe 15c, air supply pipe 15d, air supply pipe 15e, air supply pipe 15f, air supply pipe 15g, and air supply pipe 15h are provided inside combustion chamber main body 11. Hereinafter, air supply pipe 15a, air supply pipe 15b, air supply pipe 15c, air supply pipe 15d, air supply pipe 15e, air supply pipe 15f, air supply pipe 15g, and air supply pipe 15h will be collectively referred to simply as air supply pipe 15 or air supply unit 15.

[0047] The air supply pipes 15 are arranged, for example, in a line along the upper surface of the bottom surface 11a. Specifically, the air supply pipes 15 are arranged, for example, at equal intervals along the upper surface of the bottom surface 11a. Furthermore, the air supply pipes 15 are arranged, for example, at equal intervals from the upper surface of the bottom surface 11a. Each of the air supply pipes 15 ejects combustion air supplied from an air supply device (not shown), for example, in any direction. Specifically, each of the air supply pipes 15 ejects combustion air supplied from the air supply device, for example, in a direction opposite to the direction relative to the bottom surface 11a (the direction of the solid arrow in FIG. 3).

[0048] The combustion air supplied from each air supply pipe 15 (e.g., air supply pipe 15g and air supply pipe 15h) provided on the discharge port 12a side is supplied to, for example, the residue 1a deposited on the surface layer of the packed section 2. Therefore, the combustion air supplied from each air supply pipe 15 provided on the discharge port 12a side functions as air that lowers the temperature of the residue 1a deposited on the surface layer of the packed section 2.

[0049] 3, eight air supply pipes 15 are provided in the combustion chamber body 11, but the number is not limited to this. Specifically, for example, a number other than eight air supply pipes 15 may be provided in the combustion chamber body 11.

[0050] 3, for example, thermometer 16a, thermometer 16b, thermometer 16c, thermometer 16d, thermometer 16e, thermometer 16f, and thermometer 16g are provided inside combustion chamber main body 11. Hereinafter, thermometer 16a, thermometer 16b, thermometer 16c, thermometer 16d, thermometer 16e, thermometer 16f, and thermometer 16g will also be collectively referred to simply as thermometer 16.

[0051] The thermometers 16 are provided, for example, in a line along the upper surface of the bottom surface 11a at positions farther from the bottom surface 11a than the air supply pipe 15. Specifically, the thermometers 16 are provided, for example, at equal intervals along the upper surface of the bottom surface 11a. Furthermore, the thermometers 16 are provided, for example, at equal intervals from the upper surface of the bottom surface 11a. Each of the thermometers 16 measures, for example, the temperature at the position where the thermometer 16 is provided (for example, the combustion temperature of the sludge 1).

[0052] 3, seven thermometers 16 are provided in the combustion chamber main body 11, but the number is not limited to this. Specifically, for example, a number other than seven thermometers 16 may be provided in the combustion chamber main body 11.

[0053] 3, for example, thermometer 17a, thermometer 17b, thermometer 17c, and thermometer 17d are provided inside combustion chamber main body 11. Hereinafter, thermometer 17a, thermometer 17b, thermometer 17c, and thermometer 17d will also be collectively referred to simply as thermometer 17.

[0054] Each of the thermometers 17 is provided, for example, at a position farther from the upper surface of the bottom surface 11a than the thermometer 16. Each of the thermometers 17 measures, for example, the temperature at the position where the thermometer 17 is provided (for example, the temperature of the gas generated by the combustion of the sludge 1).

[0055] 3, four thermometers 17 are provided in the combustion chamber main body 11, but the number is not limited to this. Specifically, for example, a number other than four thermometers 17 may be provided in the combustion chamber main body 11.

[0056] As shown in FIG. 3, a guide member 19, which is a plate-like member, is provided in the combustion chamber body 11 near the charging port 32b.

[0057] The guide member 19 is, for example, provided at a position at a predetermined height from the top surface of the bottom surface 11a, thereby preventing the height of the sludge 1 deposited near the inlet 32b from exceeding the predetermined height, and guiding the sludge 1 further supplied from the inlet pipe 32 toward the outlet 12a (X2 direction side and Z2 direction side).

[0058] When sludge 1 is introduced into the combustion chamber main body 11 through the introduction port 32b, the sludge 1 introduced through the introduction port 32b falls, for example, to various positions on the introduction port 32b side on the surface of the filling section 2, as shown in Fig. 4. Hereinafter, the fall positions of the sludge 1 introduced through the introduction port 32b (fall positions on the surface of the filling section 2) will also be simply referred to as fall positions. After that, when more sludge 1 is introduced through the introduction port 32b, the sludge 1 introduced through the introduction port 32b falls while spreading its fall positions toward the discharge section 12 side (the X2 direction side and the Y2 direction side), as shown in Fig. 5, for example.

[0059] Here, the first angle, which is the inclination angle of the surface layer of the filling section 2 with respect to the horizontal direction (X-axis direction), is set to be smaller than the angle of repose of the sludge 1 (sludge 1 introduced into the introduction port 32b), for example. Therefore, the sludge 1 that has fallen onto the surface layer of the filling section 2 remains, for example, near the position where each piece of sludge 1 has fallen.

[0060] Next, the sludge 1 that has fallen onto the surface of the filling section 2 is combusted at the position where each sludge 1 has fallen, for example, by combustion air supplied from each air supply pipe 15. Then, among the sludge 1 that has fallen onto the surface of the filling section 2, residue 1a where combustion has progressed sufficiently and the angle of repose has become smaller than the first angle begins to gradually move, for example, toward the discharge port 12a side (the X2 direction side and the Y2 direction side), as shown in Figure 6. On the other hand, among the sludge 1 that has fallen onto the surface of the filling section 2, sludge 1 whose angle of repose has not become smaller than the first angle continues to be combusted, for example, near the position where each sludge 1 has fallen, without moving on the surface of the filling section 2.

[0061] Thereafter, the residue 1a that has moved to the vicinity of the discharge section 12 is accumulated, for example, in and near the discharge section 12, as shown in FIG.

[0062] 8, when the height of the residue 1a in the discharge unit 12 reaches a predetermined height, the discharge unit 12 discharges the residue 1a, for example, from the discharge port 12a. Specifically, in this case, the discharge unit 12 discharges, for example, a predetermined amount of the residue 1a.

[0063] In addition, when a portion of the granular material constituting the filling section 2 is discharged from the discharge port 12a together with the residue 1a, in the combustion chamber 10, for example, a portion of the residue 1a may function as at least a portion of the filling section 2.

[0064] Thus, the incineration system 1000 of this embodiment includes, for example, an incinerator 100. The incinerator 100 includes, for example, a combustion chamber 10 for burning sludge 1, an inlet 32b through which the sludge 1 is introduced into the combustion chamber 10, and an outlet 12a through which residue 1a generated by the combustion of the sludge 1 is discharged from the combustion chamber 10. Furthermore, in the incineration system 1000 of this embodiment, the combustion surface CSa, which is the bottom surface of the combustion section CS where the sludge 1 is burned in the combustion chamber 10, is an inclined surface that is inclined, for example, so that the height on the inlet 32b side is higher than the height on the outlet 12a side. In the incineration system 1000 of this embodiment, the inclination angle of the combustion surface CSa with respect to the horizontal direction (X-axis direction) is, for example, an angle greater than the angle of repose of the residue 1a but smaller than the angle of repose of the sludge 1.

[0065] As a result, in the incineration system 1000 of this embodiment, for example, it is possible to make adjustments so that, of the sludge 1 put into the combustion chamber main body 11, residue 1a as combustion progresses moves (falls) on the combustion surface CSa, and it is also possible to make adjustments so that the sludge 1 being burned (sludge 1 before it becomes residue 1a) does not move on the combustion surface CSa.

[0066] Therefore, in the incineration system 1000 of this embodiment, for example, it is possible to transfer the sludge 1 within the incinerator 100 without using power. Therefore, in the incineration system 1000 of this embodiment, for example, it is possible to reduce the energy, such as electricity, required to transfer the sludge 1 within the incinerator 100, and it is possible to reduce the manufacturing cost of the incinerator 100. Furthermore, in the incineration system 1000 of this embodiment, for example, by eliminating the need to use power, it is possible to reduce the number of parts required to transfer the residue 1a. Therefore, in the incineration system 1000 of this embodiment, it is possible to reduce the load and cost required for maintenance, for example.

[0067] Furthermore, in the incineration system 1000 of this embodiment, the combustion surface CSa is, for example, the upper surface of the bottom surface 11a of the combustion chamber 10 (the surface on the Z1 direction side).

[0068] Furthermore, in the incineration system 1000 of this embodiment, a weir section 18 is provided on the bottom surface 11a of the combustion chamber 10, protruding upward and extending to both wall surfaces (wall surface 11b and wall surface 11c) of the combustion chamber 10. In the incineration system 1000 of this embodiment, the space defined by the wall surface on the inlet 32b side of the weir section 18, the bottom surface 11a of the combustion chamber main body 11, and both wall surfaces (wall surface 11b and wall surface 11c) of the combustion chamber main body 11 is filled with, for example, at least one of granular material and residue 1a to form a filled section 2. Furthermore, in this case, the combustion surface CSa is, for example, the upper surface of the filled section 2.

[0069] In the incineration system 1000 of this embodiment, the discharge port 12a discharges, from the combustion chamber 10, the residue 1a that has moved on the combustion surface CSa from the inlet 32b side toward the discharge port 12a side, for example.

[0070] As a result, in the incineration system 1000 of this embodiment, it is possible to prevent, for example, the sludge 1 introduced through the inlet 32b from suddenly falling toward the discharge outlet 12a (X2 direction and Z2 direction). Therefore, in the incineration system 1000, it is possible to prevent, for example, sludge 1 that has not been sufficiently combusted (sludge 1 before becoming residue 1a) from being discharged from the discharge outlet 12a.

[0071] Furthermore, in the incineration system 1000 of this embodiment, compared to, for example, a case where the filling section 2 is not formed on the bottom surface 11a, it is possible to create a condition in which the sludge 1 introduced from the inlet 32b becomes integrated with the granular material and moves easily toward the discharge outlet 12a side (X2 direction side and Y2 direction side), thereby making it possible to prevent the sludge 1 introduced from the inlet 32b from remaining too long on the inlet 32b side.

[0072] Furthermore, in the incineration system 1000 of this embodiment, for example, it is possible to prevent the sludge 1 from being burned on the bottom surface 11a, and it is possible to protect the bottom surface 11a made of an iron plate or the like.

[0073] [Control device 500 in the first embodiment] Next, the control device 500 will be described. Fig. 9 and Fig. 10 are diagrams illustrating the control device 500. Specifically, Fig. 9 is a diagram illustrating the hardware configuration of the control device 500. Furthermore, Fig. 10 is a diagram illustrating the functions of the control device 500.

[0074] The incineration system 1000 includes, for example, a control device 500, as shown in FIGS.

[0075] 9, the control device 500 is, for example, an electronic device having an electronic circuit. Specifically, the control device 500 is, for example, a computer device having a CPU 501 which is a processor, a memory 502, a communication device 503, and a storage medium 504. Each unit is connected to each other via, for example, a bus 505.

[0076] The storage medium 504 has, for example, a program storage area (not shown) that stores a program 510 for performing various controls. The storage medium 504 also has, for example, an information storage area 530 that stores information used when performing various controls. The storage medium 504 may be, for example, a hard disk drive (HDD) or a solid state drive (SSD).

[0077] The CPU 501 performs various controls by executing a program 510 loaded into the memory 502 from the storage medium 504, for example.

[0078] The communication device 503 accesses an operation terminal (not shown) through which the administrator inputs necessary information, for example, via a network (not shown) such as the Internet.

[0079] The control device 500 then performs control (hereinafter also referred to as residue discharge control) to discharge the residue 1a from the discharge port 12a depending on, for example, the accumulation state of the residue 1a near the discharge part 12 in the combustion chamber main body 11.

[0080] 10, the control device 500 determines the accumulation state of the residue 1a in the combustion chamber 10, for example, based on the temperatures measured by the thermometers 16 provided in the combustion chamber body 11. Then, the control device 500 controls the discharge of the residue 1a from the discharge port 12a, for example, in accordance with the determination result of the accumulation state of the residue 1a in the combustion chamber 10.

[0081] More specifically, the control device 500 determines whether or not any of the temperatures measured by the thermometers 16 provided in the combustion chamber body 11 is below a predetermined temperature (hereinafter also referred to as a first temperature). If it is determined that any of the temperatures is below the first temperature, the control device 500 performs control so that a predetermined amount of residue 1a is discharged from the discharge port 12a.

[0082] That is, when the temperature of the thermometer 16 provided in the combustion chamber main body 11 falls below the first temperature, it is possible that the residue 1a on the discharge port 12a side has accumulated up to a height (hereinafter also referred to as the first height) above the thermometer 16 (e.g., thermometer 16f and thermometer 16g) provided on the discharge port 12a side, causing the temperature measured by the thermometer 16 provided on the discharge port 12a side to drop, as shown in Fig. 8. Therefore, in this case, the control device 500 reduces the amount of sludge 1 accumulated in the discharge section 12, for example, by discharging the residue 1a from the discharge port 12a.

[0083] As a result, in the incineration system 1000 of this embodiment, it is possible to control, for example, the height of the residue 1a accumulated on the surface of the packing section 2 so that it is low. Specifically, in the incineration system 1000, it is possible to control, for example, the height of the residue 1a accumulated on the surface of the packing section 2 on the outlet 12a side so that it is equal to or less than a first height. In other words, in the incineration system 1000 of this embodiment, it is possible to control, for example, the residue 1a accumulated on the surface of the packing section 2 on the outlet 12a side so that it is uniform. Therefore, in the incineration system 1000 of this embodiment, it is possible, for example, to supply sufficient combustion air to the residue 1a accumulated on the surface of the packing section 2 on the outlet 12a side.

[0084] Furthermore, the control device 500 controls the supply of combustion air through each air supply pipe 15 according to the combustion state of the sludge 1 in the combustion chamber body 11 (hereinafter also referred to as air supply control).

[0085] Specifically, as shown in FIG. 10, the control device 500 controls the supply of combustion air through the air supply pipe 15 based on, for example, the temperatures measured by the thermometers 17 provided in the combustion chamber body 11.

[0086] More specifically, the control device 500 determines whether any of the temperatures measured by the thermometers 17 provided in the combustion chamber body 11 is below a predetermined temperature (hereinafter also referred to as a second temperature). If it is determined that any of the temperatures is below the second temperature, the control device 500 performs control to increase the amount of combustion air supplied from the air supply pipes 15 (e.g., air supply pipe 15a, air supply pipe 15b, air supply pipe 15c, air supply pipe 15d, air supply pipe 15e, and air supply pipe 15f) provided on the inlet 32b side.

[0087] That is, when the temperature of the thermometer 17 provided in the combustion chamber body 11 falls below the second temperature, it means, for example, that the combustion temperature of the sludge 1 in the combustion chamber body 11 is low and there is a possibility that the sludge 1 is not being sufficiently combusted in the combustion chamber body 11. Therefore, in this case, the control device 500 increases the amount of combustion air supplied from the air supply pipe 15 provided on the inlet 32b side (the air supply pipe 15 provided near the combustion section CS), for example.

[0088] As a result, in the incineration system 1000 of this embodiment, it becomes possible to perform control so that the combustion of the sludge 1 in the combustion chamber main body 11 is carried out sufficiently, for example.

[0089] The control device 500 may control the supply of combustion air through the air supply pipe 15 based on the temperatures measured by the thermometers 16 provided in the combustion chamber body 11, for example.

[0090] Furthermore, the control device 500 may control the supply of combustion air through the air supply pipe 15 in accordance with the state of introduction of the sludge 1 into the combustion chamber body 11 from the introduction port 32b, for example.

[0091] Specifically, the control device 500 may perform control such that, for example, when the amount of sludge 1 input from the input port 32b (e.g., the amount input per unit time) exceeds a predetermined amount, the amount of combustion air supplied from the air supply pipe 15 provided on the input port 32b side is increased.

[0092] As a result, in the incineration system 1000 of this embodiment, even if the amount of sludge 1 supplied to the combustion chamber body 11 increases, it is possible to control the combustion of the sludge 1 within the combustion chamber body 11 so that it is sufficiently carried out.

[0093] Furthermore, the control device 500 may control the supply of combustion air through the air supply pipe 15 in accordance with the moisture content of the sludge 1 introduced into the combustion chamber body 11 from the introduction port 32b, for example.

[0094] Specifically, the control device 500 may perform control to increase the amount of combustion air supplied from the air supply pipe 15 provided on the side of the inlet 32b, for example, when the moisture content of the sludge 1 introduced from the inlet 32b exceeds a predetermined value.

[0095] As a result, in the incineration system 1000 of this embodiment, it is possible to control the combustion of the sludge 1 within the combustion chamber main body 11 so that it is sufficiently carried out, even if the moisture content of the sludge 1 fed into the combustion chamber main body 11 increases, for example.

[0096] The control device 500 may also have, for example, a field programmable gate array (FPGA) or an application specific integrated circuit (ASIC). Furthermore, the control device 500 may also include, for example, a peripheral interface controller (PIC). In this case, the residue discharge control and the air supply control may be executed by, for example, the FPGA or the ASIC.

[0097] [Residue Discharge Control in the First Embodiment] Next, the residue discharge control in the first embodiment will be described below. Fig. 11 is a flow chart illustrating the residue discharge control in the first embodiment.

[0098] 11, the control device 500 waits until it is time to acquire the temperature measured by each thermometer 16 (hereinafter simply referred to as the acquisition timing or the first acquisition timing) (NO in step S1 in FIG. 11). The first acquisition timing may be a regular timing, such as every minute.

[0099] Then, when the first acquisition timing arrives, the control device 500 acquires, for example, the temperature measured by each thermometer 16 (YES in step S1 in FIG. 11, step S2 in FIG. 11).

[0100] Next, the control device 500 determines whether or not any of the temperatures acquired in step S2 is lower than the first temperature (step S3 in FIG. 11).

[0101] As a result, for example, if it is determined that there is a temperature below the first temperature, the control device 500 controls, for example, so that a predetermined amount of residue 1a is discharged from the discharge outlet 12a (YES in step S3 of Figure 11, step S4 of Figure 11).

[0102] For example, if it is determined that there is no temperature lower than the first temperature, the control device 500 may not perform step S4 (NO in step S3 in FIG. 11).

[0103] [Air Supply Control in the First Embodiment] Next, a description will be given of air supply control in the first embodiment. Fig. 12 is a flow chart illustrating air supply control in the first embodiment.

[0104] 12, the control device 500 waits until it is time to acquire the temperature measured by each thermometer 17 (hereinafter simply referred to as the acquisition timing or the second acquisition timing) (NO in step S11 in FIG. 12). The second acquisition timing may be a regular timing, such as every minute.

[0105] Then, when the second acquisition timing arrives, the control device 500 acquires, for example, the temperature measured by each thermometer 17 (YES in step S11 in FIG. 12, step S12 in FIG. 12).

[0106] Next, the control device 500 determines whether or not any of the temperatures acquired in step S12 is lower than the second temperature (step S13 in FIG. 12).

[0107] As a result, for example, if it is determined that there is a temperature below the second temperature, the control device 500 controls, for example, the amount of combustion air supplied from the air supply pipe 15 provided in the combustion chamber main body 11 (step S14 in Figure 12).

[0108] Specifically, in this case, the control device 500 performs control so as to increase the amount of combustion air supplied from, for example, the air supply pipe 15 provided on at least the inlet 32b side of the air supply pipes provided within the combustion chamber main body 11.

[0109] For example, if it is determined that there is no temperature lower than the second temperature, the control device 500 may not perform step S14 (NO in step S13 in FIG. 12).

[0110] As described above, the incineration system 1000 in this embodiment has a control device 500 that controls the discharge of the residue 1a from the discharge port 12a depending on the accumulation state of the residue 1a in the combustion chamber 10, for example.

[0111] As a result, in the incineration system 1000 of this embodiment, it is possible to control the height of the residue 1a deposited on the surface of the packing section 2 so as to be low. Therefore, in the incineration system 1000 of this embodiment, it is possible to supply sufficient combustion air to the residue 1a deposited on the surface of the packing section 2 on the discharge port 12a side, for example.

[0112] In addition, the incineration system 1000 in this embodiment has, for example, an air supply unit 15 that supplies combustion air to the combustion chamber 10, and a control device 500 that controls the supply of combustion air by the air supply unit 15 depending on at least one of the combustion status of the sludge 1 in the combustion chamber 10 and the input status of the sludge 1 into the combustion chamber 10 from the input port 32b.

[0113] As a result, in the incineration system 1000 of this embodiment, it becomes possible to perform control so that the combustion of the sludge 1 in the combustion chamber main body 11 is carried out sufficiently, for example.

[0114] [Combustion chamber 10 in the first modified example] Next, the combustion chamber 10 in a modified example of the first embodiment (hereinafter also referred to as the first modified example) will be described. Figures 13 and 14 are detailed configuration diagrams of the combustion chamber 10 in the first modified example. Below, differences from the incineration system 1000 in the first embodiment will be described.

[0115] As shown in FIG. 13, the dam portion 18a in the first modified example has a height (height in the Z-axis direction) greater than that of the dam portion 18 described with reference to FIG. 3 and the like, for example.

[0116] Then, in the space defined by the wall surface (wall surface on the X1 direction side) of the weir portion 18a on the inlet 32b side, the bottom surface 11a of the combustion chamber main body 11, the wall surface 11b of the combustion chamber main body 11, and the wall surface 11c of the combustion chamber main body 11, as shown in Figure 13, a filling portion 2 is formed in which granular material is filled to a height higher than in the case described in Figure 3, etc.

[0117] Therefore, in the first modified example, the falling distance of the sludge 1 introduced through the introduction port 32b is shorter than that in the case described with reference to Fig. 3 etc. Also, in the filling section 2 in the first modified example, for example, a large amount of granular matter accumulates even at the falling position of the sludge 1 introduced through the introduction port 32b.

[0118] Therefore, in the first modified example, the sludge 1 introduced through the introduction port 32b falls more concentratedly on the introduction port 32b side than in the case described in, for example, Figure 3, as shown in Figure 14. In other words, in the first modified example, the sludge 1 introduced through the introduction port 32b falls without spreading out on the surface layer (combustion surface CSa) of the filling section 2, more so than in the case described in, for example, Figure 3, etc.

[0119] The sludge 1 that has fallen onto the surface of the filling section 2 is pushed toward the discharge outlet 12a (the X2 direction side and the Z2 direction side) by, for example, further sludge 1 that is added from the inlet 32b. In other words, the sludge 1 that has fallen onto the surface of the filling section 2 is pushed toward the discharge outlet 12a (the X2 direction side and the Z2 direction side) by, for example, sliding of the pusher 33.

[0120] 3 and the like, the surface layer of the filling section 2 in the first modified example is provided so that, for example, the first angle, which is the inclination angle of the surface layer of the filling section 2 with respect to the horizontal direction (X-axis direction), is an angle smaller than the angle of repose of the sludge 1 and larger than the angle of repose of the residue 1a (incineration ash 1a) generated by burning the sludge 1. Therefore, the sludge 1 that has fallen onto the surface layer of the filling section 2 is pushed out toward the discharge outlet 12a side (X2 direction side, Z2 direction side) by the sliding of the pusher 33, and then remains there without moving toward the discharge outlet 12a side.

[0121] Next, the sludge 1 that has fallen onto the surface of the filling section 2 is combusted, for example, on the surface of the filling section 2, as in the case described with reference to Figure 3 etc. Then, of the sludge 1 that has fallen onto the surface of the filling section 2, residue 1a whose angle of repose has become smaller than the first angle as combustion progresses begins to gradually move, for example, toward the discharge port 12a side (X2 direction side and Y2 direction side). On the other hand, of the sludge 1 that has fallen onto the surface of the filling section 2, sludge 1 whose angle of repose has not become smaller than the first angle continues to be combusted, for example, without moving on the surface of the filling section 2.

[0122] Thereafter, the residue 1a that has moved to the vicinity of the discharge section 12 is accumulated in the discharge section 12, for example.

[0123] Then, for example, when the height of the residue 1a in the discharge unit 12 reaches a predetermined height, the residue 1a is discharged from the discharge port 12a in the discharge unit 12. Specifically, in this case, for example, a predetermined amount of the residue 1a is discharged in the discharge unit 12. [Explanation of symbols]

[0124] 1: Sludge 1a: Residue 2: Filling section 10: Combustion chamber 11: Combustion chamber body 11a: Bottom surface 11b: Wall 11c: Wall 12: Discharge part 12a: Discharge port 15: Air supply pipe 15a: Air supply pipe 15b: Air supply pipe 15c: Air supply pipe 15d: Air supply pipe 15e: Air supply pipe 15f: Air supply pipe 15g: Air supply pipe 15h: Air supply pipe 16: Thermometer 16a: Thermometer 16b: Thermometer 16c: Thermometer 16d: Thermometer 16e: Thermometer 16f: Thermometer 16g: Thermometer 17: Thermometer 17a: Thermometer 17b: Thermometer 17c: Thermometer 17d: Thermometer 18: Weir 18a: Weir 19: Guide member 20: Post-combustion chamber 21: Post-combustion chamber body 30: Supply section 31: Supply pipe 31a: Supply port 32: Input pipe 32a: Inlet port 33: Pusher 40: Discharge section 41: Discharge pipe 41a: Discharge port 50: Control device 100: Incineration system 501:CPU 502:Memory 503: Communication device 504: Storage medium 505: Bus 510: Program 530: Information storage area

Claims

1. 1. An incineration system comprising an incinerator, The incinerator comprises: a combustion chamber for burning the material to be combusted; an inlet for introducing the material to be combusted into the combustion chamber; an exhaust port for discharging residue generated by the combustion of the object to be combusted from the combustion chamber, a combustion surface, which is the bottom surface of the combustion section in which the combustion material is burned in the combustion chamber, is inclined so that the height of the inlet side is higher than the height of the outlet side; An incineration system, wherein the inclination angle of the combustion surface relative to the horizontal direction is greater than the angle of repose of the residue and smaller than the angle of repose of the material to be combusted.

2. 2. The incineration system of claim 1, wherein the combustion surface is an upper surface of the bottom surface of the combustion chamber.

3. A dam portion is provided on the bottom surface of the combustion chamber, protruding upward and extending to both wall surfaces of the combustion chamber, a filling section is formed by filling at least one of a predetermined particulate material and the residue in a space defined by a wall surface of the weir section on the inlet side, a bottom surface of the combustion chamber, and both wall surfaces of the combustion chamber; 2. The incineration system of claim 1, wherein the combustion surface is a top surface of the charger.

4. 4. The incineration system according to claim 3, wherein the discharge port discharges the residue that has moved on the combustion surface from the inlet side toward the discharge port side from the combustion chamber.

5. 2. The incineration system according to claim 1, further comprising a control device that controls the discharge of said residue from said discharge port in accordance with the accumulation state of said residue in said combustion chamber.

6. an air supply unit that supplies combustion air into the combustion chamber; 2. The incineration system according to claim 1, further comprising: a control device that controls the supply of combustion air by the air supply unit in accordance with at least one of the combustion status of the material to be combusted in the combustion chamber and the input status of the material to be combusted from the input port into the combustion chamber.

7. An incineration method for an incineration system, comprising: an incinerator having a combustion chamber for burning materials to be combusted; an inlet for introducing the materials to be combusted into the combustion chamber; and an outlet for discharging residues generated by the combustion of the materials to be combusted from the combustion chamber; wherein a combustion surface, which is the bottom surface of the combustion section in which the materials to be combusted in the combustion chamber are combusted, is inclined so that the height of the inlet side is higher than the height of the outlet side, and the inclination angle of the combustion surface with respect to the horizontal direction is larger than the angle of repose of the residue and smaller than the angle of repose of the materials to be combusted, An incineration method, comprising controlling the discharge of the residue from the discharge port according to the accumulation state of the residue in the combustion chamber.

8. a combustion chamber for burning the material to be combusted; an inlet for introducing the material to be combusted into the combustion chamber; an exhaust port for discharging residue generated by the combustion of the object to be combusted from the combustion chamber, a combustion surface, which is the bottom surface of the combustion section in which the combustion material is burned in the combustion chamber, is inclined so that the height of the inlet side is higher than the height of the outlet side; An incinerator wherein the inclination angle of the combustion surface relative to the horizontal direction is greater than the angle of repose of the residue and smaller than the angle of repose of the material to be combusted.

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