Incineration system and incineration method

Abstract

To provide an incineration system and an incineration method capable of reducing unburned carbon.SOLUTION: Provided are an incinerator that incinerates an object to be incinerated charged from a charging pipe provided above and discharges incineration ash from a discharge pipe provided below, an adjustment mechanism that adjusts a charging region into which the object to be incinerated is charged, a measurement device that measures a deposition state of the object to be incinerated in the incinerator, and a control device that controls a charging direction by controlling the adjustment mechanism according to the deposition state measured by the measurement device.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to incineration systems and methods. [Background technology]

[0002] Various incineration systems equipped with incinerators for incinerating materials to be incinerated, such as sewage sludge (hereinafter simply referred to as materials to be incinerated), have been proposed (see Patent Documents 1 and 2). During the incineration process of materials to be incinerated, the materials to be incinerated may not be burned completely (sufficiently) and may not produce incineration ash. Hereinafter, such materials that are not burned completely and do not produce incineration ash during the incineration process will be referred to as unburned carbon. [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] Here, it is desirable to reduce (suppress) unburned carbon during sludge incineration. [Means for solving the problem]

[0005] The incineration system of the present disclosure comprises an incinerator that incinerates materials to be incinerated fed through an inlet pipe installed above and discharges the incineration ash through an outlet pipe installed below, an adjustment mechanism that adjusts the input area into which the materials to be incinerated are fed, a measuring device that measures the accumulation status of the materials to be incinerated within the incinerator, and a control device that controls the adjustment mechanism in accordance with the accumulation status measured by the measuring device. [Effects of the Invention]

[0006] The incineration system and method disclosed herein allow for a reduction in unburned carbon. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a configuration diagram of an incineration system 1000 according to the first embodiment. [Figure 2] FIG. 2 is a configuration diagram of the incineration system 1000 according to the first embodiment. [Figure 3] FIG. 3 is a configuration diagram of the incineration system 1000 according to the first embodiment. [Figure 4] FIG. 4 is a flowchart illustrating the sludge input control in the first embodiment. [Figure 5] FIG. 5 is a flowchart illustrating the first sludge discharge control in the first embodiment. [Figure 6] FIG. 6 is a flowchart illustrating the second sludge discharge control in the first embodiment. [Figure 7] FIG. 7 is a diagram illustrating a specific example of the incineration system 1000 according to the first embodiment. [Figure 8] FIG. 8 is a diagram illustrating a specific example of the incineration system 1000 according to the first embodiment. [Figure 9] FIG. 9 is a diagram illustrating an incineration system 1000 in the first modified example. [Figure 10] FIG. 10 is a diagram illustrating an incineration system 1000 in the second 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] Figures 1 to 3 are configuration diagrams of an incineration system 1000 in the first embodiment. Specifically, Figure 1 is a vertical cross-sectional view of the incinerator 100 in the first embodiment as seen from the front. Also, Figure 2 is a cross-sectional view of the incinerator 100 in the first embodiment taken along line AA.

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

[0011] [Configuration of incinerator 100] First, the configuration of the incinerator 100 in the first embodiment will be described.

[0012] As shown in FIG. 1, the incinerator 100 is, for example, a fixed-bed incinerator, and has a combustion chamber 11, a sludge injection pipe 12 (hereinafter also simply referred to as the injection pipe 12), an exhaust gas discharge pipe 13, and an aeration pipe 14.

[0013] The combustion chamber 11 is, for example, on the Z1 side (upper side) of the internal space of the incinerator 100, and accumulates therein the sludge 1 that has been introduced from the Z1 side (above) through a sludge introduction pipe 12 provided at the end (ceiling) of the incinerator 100 on the Z1 side. Then, in the combustion chamber 11, the sludge 1 is combusted by combustion air supplied by an air diffuser pipe 14, for example.

[0014] In addition, the sludge 1 introduced into the combustion chamber 11 may be pre-mixed with, for example, silica sand for the purpose of adjusting the combustibility of the sludge 1 in the combustion chamber 11 and the dispersibility of the combustion air.

[0015] Furthermore, as shown in FIG. 2, of the region A in the combustion chamber 11 when viewed from the Z1 direction side (above), the region A on the Y1 direction side and the X1 direction side will also be referred to as region A1, the region A on the Y1 direction side and the X2 direction side will also be referred to as region A2, the region A on the Y2 direction side and the X1 direction side will also be referred to as region A3, and the region A on the Y2 direction side and the X2 direction side will also be referred to as region A4.

[0016] The air diffuser 14 supplies (sprays) combustion air, for example, supplied from an air supply device (not shown) arranged outside the incinerator 100, from a plurality of nozzle holes (not shown) provided in the air diffuser 14 to the sludge 1 accumulated in the combustion chamber 11. Specifically, as shown by the solid arrow in Fig. 1, the air diffuser 14 supplies combustion air, for example, toward the sludge 1 accumulated on the Z1 direction side (sludge 1 accumulated above the installation position of the air diffuser 14). That is, in the combustion chamber 11, the sludge 1 is incinerated, for example, in a layer L (hereinafter also referred to as a combustion layer L) above the air diffuser 14.

[0017] The air diffuser 14 may supply combustion air in a direction other than the direction indicated by the solid arrow in FIG. 1 (for example, toward the Z2 direction).

[0018] Furthermore, the exhaust gas (hereinafter also simply referred to as exhaust gas) generated by the combustion of the sludge 1 in the combustion chamber 11 is transferred to an exhaust gas treatment facility (not shown), for example, via an exhaust gas exhaust pipe 13. Specifically, the exhaust gas generated by the incineration of the sludge 1 is transferred to, for example, a heat exchanger that recovers the thermal energy of the exhaust gas, a dust collector that collects impurities in the exhaust gas, or a device that brings the exhaust gas into contact with water to remove SO 2 in the exhaust gas. X The sludge is then transferred to a smoke washing tower or the like which removes components such as the above. The thermal energy recovered by the heat exchanger is supplied to, for example, a dryer which dries the sludge 1 or a power generation system.

[0019] Incidentally, the combustion chamber 11 may be provided with, for example, a plurality of air diffusers 14. Furthermore, the combustion chamber 11 may be supplied with, for example, auxiliary fuel from a fuel supply device (not shown) for the purpose of promoting the combustion of the sludge 1.

[0020] 1, the incinerator 100 has, for example, an ash discharge chamber 21, a screw 22 (hereinafter also referred to as a conveying mechanism 22), an ash discharge pipe 23, and an ash discharge pipe 24. Hereinafter, the ash discharge pipe 23 and the ash discharge pipe 24 will also be collectively referred to as the ash discharge pipe 23, etc.

[0021] The ash discharge chamber 21 is, for example, on the Z2 direction side (lower side) of the internal space of the incinerator 100, and discharges incineration ash 1a (residue 1a) generated by incineration of the sludge 1 in the combustion chamber 11 to the outside of the incinerator 100.

[0022] Here, the end (upper side) of the ash discharge chamber 21 on the Z1 direction side is open to, for example, the combustion chamber 11, as shown in Figure 1. That is, the ash discharge chamber 21 is internally connected to, for example, the combustion chamber 11. Inside the combustion chamber 11 and the ash discharge chamber 21, for example, incineration ash 1a is accumulated from the bottom of the ash discharge chamber 21 to the vicinity of the combustion layer L, and sludge 1 being incinerated or before incineration is further accumulated on top of it. Therefore, for example, when the incineration ash 1a accumulated in the ash discharge chamber 21 is discharged from the ash discharge pipe 23 or the ash discharge pipe 24, the sludge 1 and incineration ash 1a accumulated inside the combustion chamber 11 and the ash discharge chamber 21 gradually move toward the Z2 direction side (downward) as the incineration ash 1a is discharged.

[0023] The screw 22 has, for example, a screw shaft 22a and screw blades 22b, and transfers the incineration ash 1a accumulated in the ash discharge chamber 21 to the ash discharge pipe 23 or 24.

[0024] The screw shaft 22a is, for example, a shaft installed so as to extend along the X-axis direction (horizontal direction), and one end (for example, the end on the X1 direction side) is led out to the outside of the incinerator 100 and supported by a support member (not shown). The screw shaft 22a rotates around its long axis by, for example, driving a motor 25 connected to the one end led out to the outside of the incinerator 100.

[0025] The screw blade 22b is attached to, for example, the outer periphery of the screw shaft 22a and extends spirally toward one end of the screw shaft 22a.

[0026] Specifically, for example, when the rotation direction of the screw shaft 22a is a first rotation direction, the screw blade 22b transfers the incineration ash 1a accumulated in the ash discharge chamber 21 to the ash discharge pipe 23 (near the ash discharge pipe 23). Also, for example, when the rotation direction of the screw shaft 22a is a second rotation direction that is the opposite rotation direction to the first rotation direction, the screw blade 22b transfers the incineration ash 1a accumulated in the ash discharge chamber 21 to the ash discharge pipe 24 (near the ash discharge pipe 24).

[0027] The ash discharge pipe 23 is provided, for example, on the X2 direction side at the bottom of the ash discharge chamber 21, and discharges the incineration ash 1a transferred by the screw 22 to the outside of the incinerator 100.

[0028] The ash discharge pipe 24 is provided, for example, on the X1 direction side at the bottom of the ash discharge chamber 21, and discharges the incineration ash 1a transferred by the screw 22 to the outside of the incinerator 100.

[0029] In the above example, the incinerator 100 is described as being provided with two ash discharge pipes (ash discharge pipe 23 and ash discharge pipe 24), but this is not limiting. Specifically, the incinerator 100 may be provided with, for example, a number of ash discharge pipes other than two.

[0030] 1, the incinerator 100 has, for example, a damper 31 (hereinafter also referred to as a first adjustment mechanism) and a damper 32 (hereinafter also referred to as a second adjustment mechanism). Hereinafter, the dampers 31 and 32 will be collectively referred to as dampers 31, etc. or adjustment mechanisms.

[0031] The damper 31 is provided, for example, in the sludge injection pipe 12, and adjusts the injection direction of the sludge 1 into the incinerator 100 along the first direction. Below, a case where the first direction is the Y-axis direction will be described.

[0032] Specifically, the damper 31 has, for example, a rotating shaft 31a rotatably attached along the X-axis direction on the inner wall of the sludge injection pipe 12, and a plate-like member 31b attached to the outer circumferential surface of the rotating shaft 31a and having a shape extending on the XZ plane within a range that does not contact the inner wall of the sludge injection pipe 12. In other words, the plate-like member 31b is a member that rotates around the rotating shaft 31a as the rotating shaft 31a rotates.

[0033] The damper 31, for example, adjusts the inclination angle (inclination angle relative to the XZ plane) of the plate-shaped member 31b by rotating the plate-shaped member 31b around the rotation axis 31a, and adjusts the input direction of the sludge 1 falling from the Z1 direction (above) (the input direction of the sludge 1 into the incinerator 100) along the Y-axis direction.

[0034] Specifically, the damper 31 adjusts the input position of the sludge 1 in the combustion chamber 11 to the Y1 direction (e.g., area A1 or area A2) by, for example, adjusting the end of the plate-shaped member 31b on the Z1 direction side so that it tilts toward the Y2 direction, in other words, by adjusting the end of the plate-shaped member 31b on the Z2 direction side so that it tilts toward the Y1 direction.

[0035] In addition, the damper 31 adjusts the input position of the sludge 1 in the combustion chamber 11 to the Y2 direction (e.g., area A3 or area A4) by, for example, adjusting the end of the plate-shaped member 31b on the Z1 direction side so that it tilts toward the Y1 direction, in other words, by adjusting the end of the plate-shaped member 31b on the Z2 direction side so that it tilts toward the Y2 direction.

[0036] The damper 32 is provided, for example, in the sludge injection pipe 12, and adjusts the injection direction of the sludge 1 into the incinerator 100 along a second direction different from the first direction. Below, a description will be given of the case where the second direction is the X-axis direction.

[0037] Specifically, the damper 32 has, for example, a rotating shaft 32a rotatably attached along the Y-axis direction on the inner wall of the sludge injection pipe 12, and a plate-like member 32b attached to the outer circumferential surface of the rotating shaft 32a and having a shape extending on the XY plane within a range that does not contact the inner wall of the sludge injection pipe 12. In other words, the plate-like member 32b is a member that rotates around the rotating shaft 32a as the rotating shaft 32a rotates.

[0038] The damper 32, for example, adjusts the inclination angle (inclination angle with respect to the XY plane) of the plate-shaped member 32b by rotating the plate-shaped member 32b around the rotation axis 32a, and adjusts the input direction of the sludge 1 (input direction of the sludge 1 into the incinerator 100) that falls from the Z1 direction (above) along the X-axis direction.

[0039] Specifically, the damper 32 adjusts the input position of the sludge 1 in the combustion chamber 11 to the X2 direction side (e.g., area A2 or area A4) by, for example, adjusting the end of the plate-shaped member 32b on the X1 direction side so that it tilts toward the Z1 direction, in other words, by adjusting the end of the plate-shaped member 32b on the X2 direction side so that it tilts toward the Z2 direction.

[0040] In addition, the damper 32 adjusts the input position of the sludge 1 in the combustion chamber 11 to the X1 direction side (e.g., area A1 or area A3) by, for example, adjusting the end of the plate-shaped member 32b on the X1 direction side so that it tilts toward the Z2 direction, in other words, by adjusting the end of the plate-shaped member 32b on the X2 direction side so that it tilts toward the Z1 direction.

[0041] That is, for example, when the input position of sludge 1 is adjusted toward the Y1 direction by damper 31 and the input position of sludge 1 is adjusted toward the X1 direction by damper 32, the sludge 1 input from the sludge input pipe 12 to the incinerator 100 is supplied to area A1 (near area A1).

[0042] Also, for example, when the input position of sludge 1 is adjusted toward the Y1 direction by damper 31 and the input position of sludge 1 is adjusted toward the X2 direction by damper 32, sludge 1 input from sludge input pipe 12 to incinerator 100 is supplied to area A2 (near area A2).

[0043] Also, for example, when the input position of sludge 1 is adjusted toward the Y2 direction by damper 31 and the input position of sludge 1 is adjusted toward the X1 direction by damper 32, sludge 1 input from sludge input pipe 12 to incinerator 100 is supplied to area A3 (near area A3).

[0044] Also, for example, when the input position of sludge 1 is adjusted toward the Y2 direction by damper 31 and the input position of sludge 1 is adjusted toward the X2 direction by damper 32, sludge 1 input from sludge input pipe 12 to incinerator 100 is supplied to area A4 (near area A4).

[0045] In the above example, the damper 31 is mounted on the Z1 direction side (higher) than the damper 32, but this is not limiting. Specifically, the damper 31 may be mounted on the Z2 direction side (lower) than the damper 32, for example.

[0046] Furthermore, in the above example, the case where two dampers (damper 31 and damper 32) are provided in the sludge input pipe 12 has been described, but this is not limited to this. Specifically, the sludge input pipe 12 may be provided with, for example, only one of damper 31 and damper 32. That is, the sludge input pipe 12 may be provided with, for example, only damper 31 of dampers 31 and 32, or only damper 32 of dampers 31 and 32.

[0047] Furthermore, in the above example, a case has been described in which the number of input directions of the sludge 1 that can be adjusted by the damper 31 is two (the Y1 direction side or the Y2 direction side) and the number of input directions of the sludge 1 that can be adjusted by the damper 32 is two (the X1 direction side or the X2 direction side), in other words, the number of regions A whose input directions of the sludge 1 can be adjusted by the dampers 31 and 32 is four (region A1, region A2, region A3, and region A4), but this is not limited to this. Specifically, the number of input directions of the sludge 1 that can be adjusted by the damper 31 may be, for example, two or more directions. Furthermore, the number of input directions of the sludge 1 that can be adjusted by the damper 32 may be, for example, two or more directions. In other words, the number of regions A whose input directions of the sludge 1 can be adjusted by the dampers 31 and 32 may be, for example, four or more directions.

[0048] 1, the incinerator 100 has, for example, height sensors 41, 42, 43, and 44. Hereinafter, height sensors 41, 42, 43, and 44 will be collectively referred to as height sensors 41, etc. Hereinafter, height sensors 41, 42, 43, and 44 will also be referred to as measuring devices, respectively.

[0049] Height sensor 41, height sensor 42, height sensor 43 and height sensor 44 are each attached, for example, to the Z2 side surface at the Z1 side end (ceiling) of incinerator 100, and measure the height (height in the Z-axis direction) of sludge 1 deposited on the Z2 side (below) of the attachment position of each height sensor.

[0050] Specifically, height sensor 41 is attached, for example, to the Z1 direction side (above) of area A1 and measures the height of sludge 1 in area A1. Height sensor 42 is attached, for example, to the Z1 direction side (above) of area A2 and measures the height of sludge 1 in area A2. Height sensor 43 is attached, for example, to the Z1 direction side (above) of area A3 and measures the height of sludge 1 in area A3. Height sensor 44 is attached, for example, to the Z1 direction side (above) of area A4 and measures the height of sludge 1 in area A4.

[0051] In the above example, a case has been described in which four height sensors (height sensor 41, height sensor 42, height sensor 43, and height sensor 44) are attached to the end of the incinerator 100 on the Z1 direction side, but this is not limited to this. Specifically, for example, a number of height sensors other than four may be attached to the end (ceiling) on ​​the Z1 direction side of the incinerator 100. In this case, each height sensor may measure, for example, the height of sludge 1 in a number of areas A other than four. Furthermore, one height sensor may measure, for example, the height of sludge 1 deposited in each of multiple areas A.

[0052] Furthermore, in the above example, the case where each height sensor is attached to the end portion of the incinerator 100 on the Z1 direction side has been described, but this is not limited to this. Specifically, each height sensor may be attached to a position other than the end portion of the incinerator 100 on the Z1 direction side (for example, a wall surface of the incinerator 100) as long as it is a position where the height of the sludge 1 accumulated in each area A can be measured.

[0053] Moreover, the incineration system 1000 further includes, for example, a control device 200, as shown in FIG.

[0054] The control device 200 controls at least one of the dampers 31 and 32 depending on the accumulation status of sludge 1 in each area A measured, for example, by a height sensor 41, and controls the direction in which sludge 1 is introduced into the incinerator 100 (hereinafter also referred to as sludge introduction control).

[0055] Specifically, the control device 200, for example, identifies an area A (hereinafter also referred to as a specific area A) among the multiple areas A in which the height of the sludge 1 measured by the height sensor 41 or the like satisfies a predetermined condition (hereinafter also simply referred to as a condition). The specific area A is, for example, any of the areas A in which the height of the accumulated sludge 1 is equal to or less than a threshold. Furthermore, the specific area A is, for example, an area A in which the height of the accumulated sludge 1 is the lowest among the multiple areas A. Then, the control device 200 controls at least one of the inclination angle of the plate-shaped member 31b of the damper 31 and the inclination angle of the plate-shaped member 31b of the damper 32 so that the direction toward the specific area A coincides with the direction in which the sludge 1 is introduced from the sludge introduction pipe 12 into the incinerator 100.

[0056] In addition, the control device 200 controls the rotation speed of the screw 22 (the transport speed of the incineration ash 1a) according to the accumulation status of the sludge 1 in each area A measured by, for example, a height sensor 41, and controls the amount of incineration ash 1a discharged from the incinerator 100, thereby controlling the height of the sludge 1 accumulated in the incinerator 100 (hereinafter also referred to as sludge discharge control).

[0057] Specifically, the control device 200, for example, identifies each area A where the height of the sludge 1 is less than a predetermined height (hereinafter simply referred to as the predetermined height) among areas A where the height of the sludge 1 is measured by the height sensor 41 or the like. The predetermined height is, for example, a height predetermined by an administrator, and is a height at which it is possible to determine that sufficient combustion air can be supplied to the sludge 1 being incinerated. Then, for example, when the proportion of the identified area A among areas A where the height of the sludge 1 is measured by the height sensor 41 or the like is equal to or greater than a predetermined proportion (hereinafter simply referred to as the predetermined proportion), the control device 200 controls the rotation speed of the screw 22 to be equal to or less than a predetermined threshold (hereinafter simply referred to as the first threshold). In this case, the control device 200 may, for example, stop the rotation of the screw 22.

[0058] Furthermore, the control device 200 identifies each of the areas A where the height of the sludge 1 is equal to or greater than a predetermined height among the areas A where the height of the sludge 1 is measured by the height sensor 41 or the like. Then, for example, when the proportion of the identified areas A among the areas A where the height of the sludge 1 is measured by the height sensor 41 or the like is equal to or greater than a predetermined proportion, the control device 200 controls the rotation speed of the screw 22 to be equal to or greater than a predetermined threshold (hereinafter also simply referred to as the second threshold). The second threshold is, for example, a value greater than the first threshold.

[0059] That is, in the incinerator 100, for example, the height of the sludge 1 accumulated in the combustion chamber 11 (for example, the height of the combustion layer L) may become uneven depending on the installation position of the sludge injection pipe 12, etc. In this case, in the incinerator 100, for example, the combustion air supplied from the air diffuser 14 may become uneven, and the supply of combustion air to the sludge 1 being incinerated (for example, the sludge 1 located in the combustion layer L) may not be uniform. As a result, in the incinerator 100, for example, unburned carbon may remain in a place where there is insufficient supply of combustion air (i.e., a place where the air ratio is insufficient), which may cause abnormal combustion in the combustion chamber 11. Specifically, in this case, for example, the combustion of the unburned carbon may generate a local high-temperature field, resulting in the generation of clinker.

[0060] Therefore, in the incineration system 1000 of this embodiment, for example, if there is a difference in the height of the sludge 1 accumulated in each area A within the incinerator 100, sludge input control is performed to control the height of the sludge 1 accumulated in each area A within the incinerator 100 so that it becomes uniform.

[0061] Furthermore, for example, if the height of the sludge 1 deposited in each area A is higher than a predetermined height, even when sludge input control is performed in the incinerator 100, it may not be possible to sufficiently supply combustion air to the sludge 1 during incineration. Therefore, in this case, it is preferable to discharge the incineration ash 1a in the ash discharge chamber 21 in the incinerator 100 so that the height of the sludge 1 deposited in each area A approaches the predetermined height.

[0062] Therefore, in the incineration system 1000 of this embodiment, for example, if it is determined that the height of the sludge 1 accumulated in each area A within the incinerator 100 is higher than a predetermined height, sludge discharge control is also performed in addition to sludge input control, so that the height of the sludge 1 accumulated in each area A within the incinerator 100 becomes uniform and the height of the sludge 1 accumulated in each area A within the incinerator 100 approaches the predetermined height, and so that sufficient combustion air is supplied to the sludge 1 during incineration.

[0063] As a result, in the incineration system 1000 of this embodiment, it is possible, for example, to suppress the occurrence of uneven flow of combustion air within the incinerator 100. Therefore, in the incineration system 1000 of this embodiment, it is possible, for example, to reduce (suppress) unburned carbon in the combustion chamber 11, and to suppress the occurrence of abnormal combustion in the combustion chamber 11. In other words, in the incineration system 1000 of this embodiment, it is possible, for example, to suppress the occurrence of a local high-temperature field due to the combustion of unburned carbon, and to suppress the generation of clinker.

[0064] [Hardware configuration of the control device 200] Next, a description will be given of the hardware configuration of the control device 200 in the first embodiment. Fig. 3 is a diagram illustrating the hardware configuration of the control device 200 in the first embodiment.

[0065] 3, the control device 200 is, for example, an electronic device having an electronic circuit. Specifically, the control device 200 is, for example, a computer device having a CPU 201 which is a processor, a memory 202, a communication device 203, and a storage medium 204. Each unit is connected to each other via, for example, a bus 205.

[0066] The storage medium 204 has a program storage area (not shown) that stores a program 210 for performing, for example, sludge input control and sludge discharge control (hereinafter, these are also collectively referred to as sludge input control, etc.). The storage medium 204 also has an information storage area 230 that stores, for example, information used when performing sludge input control, etc. The storage medium 204 may be, for example, a hard disk drive (HDD) or a solid state drive (SSD).

[0067] The CPU 201 executes a program 210 loaded from the storage medium 204 to the memory 202, thereby controlling sludge input and the like.

[0068] The communication device 203 accesses an operation terminal (not shown) through which the administrator inputs necessary information, for example, via a network (not shown) such as the Internet.

[0069] The control device 200 may have, for example, an FPGA (Field Programmable Gate Array) or an ASIC (Application Specific Integrated Circuit). The control device 200 may also include, for example, a PIC (Peripheral Interface Controller). In this case, the sludge input control and the like may be executed by, for example, the FPGA or the ASIC.

[0070] [Sludge Discharge Control in the First Embodiment] Next, a description will be given of the sludge input control in the first embodiment. Fig. 4 is a flow chart illustrating the sludge input control in the first embodiment.

[0071] As shown in Fig. 4, the control device 200 waits until it is time to acquire the measurement results from the height sensor 41 or the like (hereinafter simply referred to as the acquisition timing). The acquisition timing may be a regular timing, for example, every minute. When the acquisition timing arrives, the control device 200 acquires the height of the sludge 1 deposited in each area A from the height sensor 41 or the like (step S1 in Fig. 4).

[0072] Next, the control device 200 identifies a specific area A into which the sludge 1 supplied into the incinerator 100 is to be introduced, for example, based on the height of the sludge 1 obtained in step S1 (the height of the sludge 1 deposited in each area A) (step S2 in Figure 4).

[0073] Specifically, the control device 200, for example, identifies one of the multiple areas A in which the height of the sludge 1 accumulated is equal to or less than a threshold as the specific area A. Furthermore, the control device 200, for example, identifies the area A in which the height of the sludge 1 accumulated is the lowest as the specific area A.

[0074] Thereafter, the control device 200 controls at least one of the damper 31 and the damper 32 so that the direction relative to the specific area A identified in step S2 is the input direction of the sludge 1 (step S3 in FIG. 4).

[0075] [First sludge discharge control in the first embodiment] Next, the control of the rotation speed of the screw 22 (hereinafter also referred to as first sludge discharge control) among the sludge discharge controls in the first embodiment will be described. Fig. 5 is a flowchart illustrating the first sludge discharge control in the first embodiment.

[0076] The control device 200 waits until, for example, an acquisition timing arrives, as shown in Fig. 5. Then, when the acquisition timing arrives, the control device 200 acquires, for example, the height of the sludge 1 deposited in each area A of the height sensor 41 or the like (step S11 in Fig. 5).

[0077] Next, the control device 200 determines whether or not to increase the amount of incineration ash 1a discharged from the incinerator 100, for example, based on the height of the sludge 1 obtained in step S11 (the height of the sludge 1 deposited in each area A) (step S12 in Figure 5).

[0078] Specifically, the control device 200 determines that it is necessary to increase the amount of incineration ash 1a discharged from the incinerator 100 (amount discharged per unit time) when, for example, a predetermined percentage or more of the heights of the sludge 1 obtained in step S11 (heights of the sludge 1 deposited in each area A) are equal to or greater than a predetermined height, in other words, when the heights of the sludge 1 deposited in many areas A are equal to or greater than a predetermined height. Note that the control device 200 may also determine that it is necessary to increase the amount of incineration ash 1a discharged from the incinerator 100 when, for example, all of the heights of the sludge 1 obtained in step S11 (heights of the sludge 1 deposited in each area A) are equal to or greater than a predetermined height.

[0079] On the other hand, the control device 200 determines that there is no need to increase the amount of incineration ash 1a discharged from the incinerator 100 (amount discharged per unit time) if, for example, a predetermined percentage or more of the height of the sludge 1 obtained in step S11 (the height of the sludge 1 deposited in each area A) is not a predetermined height or more.

[0080] As a result, for example, when it is determined in step S12 that the discharge amount of incineration ash 1a needs to be increased (YES in step S12 in FIG. 5), the control device 200 increases the rotation speed of the screw 22 (step S13 in FIG. 5).

[0081] Specifically, in this case, the control device 200 sets the rotation speed of the screw 22 to, for example, a high speed. That is, in this case, the control device 200 controls the rotation speed of the screw 22 to be, for example, faster than a medium speed. Note that the control device 200 may return the rotation speed of the screw 22 to a medium speed when a predetermined time has elapsed since the rotation speed of the screw 22 was set to a high speed.

[0082] On the other hand, for example, if it is determined in step S12 that there is no need to increase the amount of incineration ash 1a discharged (NO in step S12 of Figure 5), the control device 200 determines whether or not to reduce the amount of incineration ash 1a discharged from the incinerator 100 (step S14 of Figure 5).

[0083] Specifically, the control device 200 determines that it is necessary to reduce the amount of incineration ash 1a discharged from the incinerator 100 (amount discharged per unit time) when, for example, a predetermined percentage or more of the heights of the sludge 1 obtained in step S11 (heights of the sludge 1 deposited in each area A) are less than the predetermined height, in other words, when the heights of the sludge 1 deposited in many areas A are less than the predetermined height. Note that the control device 200 may also determine that it is necessary to reduce the amount of incineration ash 1a discharged from the incinerator 100 when, for example, all of the heights of the sludge 1 obtained in step S11 (heights of the sludge 1 deposited in each area A) are less than the predetermined height.

[0084] On the other hand, if, for example, a predetermined percentage or more of the height of the sludge 1 obtained in step S11 (the height of the sludge 1 deposited in each area A) is not less than a predetermined height, the control device 200 determines that there is no need to increase or decrease the amount of incineration ash 1a discharged from the incinerator 100 (amount discharged per unit time).

[0085] As a result, for example, if it is determined in step S14 that the discharge amount of incineration ash 1a needs to be reduced (YES in step S14 in FIG. 5), the control device 200 reduces the rotation speed of the screw 22 (step S16 in FIG. 5).

[0086] Specifically, in this case, the control device 200 sets the rotation speed of the screw 22 to a low speed, for example. That is, in this case, the control device 200 controls the rotation speed of the screw 22 to be slower than a medium speed, for example. Note that the control device 200 may return the rotation speed of the screw 22 to a medium speed when a predetermined time has elapsed since the rotation speed of the screw 22 was set to a low speed, for example.

[0087] In this case, the control device 200 may stop the discharge of the incineration ash 1a from the incinerator 100 by, for example, stopping the rotation of the screw 22.

[0088] On the other hand, for example, if it is determined in step S14 that there is no need to reduce the amount of incineration ash 1a discharged (NO in step S14 in FIG. 5), the control device 200 maintains the rotation speed of the screw 22 (step S15 in FIG. 5). In other words, in this case, the control device 200 does not change the setting of the rotation speed of the screw 22, for example.

[0089] The control device 200 may continuously control the rotation speed of the screw 22 by performing PID (Proportional Integral Differential) control based on the height of the sludge 1 measured by the height sensor 41 or the like. Specifically, in this case, the control device 200 may perform PID control so that a value based on the height of the sludge 1 measured by the height sensor 41 or the like (for example, the maximum height of the sludge 1, the minimum height of the sludge 1, the average height of the sludge 1, etc.) becomes constant.

[0090] [Second sludge discharge control in the first embodiment] Next, the control of the rotation direction of the screw 22 (hereinafter also referred to as second sludge discharge control) among the sludge discharge controls in the first embodiment will be described. Fig. 6 is a flowchart illustrating the second sludge discharge control in the first embodiment.

[0091] The control device 200 waits until, for example, an acquisition timing arrives, as shown in Fig. 6. Then, when the acquisition timing arrives, the control device 200 acquires, for example, the height of the sludge 1 deposited in each area A of the height sensor 41 or the like (step S21 in Fig. 6).

[0092] Next, the control device 200 determines the transport direction of the sludge 1 (the rotation direction of the screw 22) based on, for example, the height of the sludge 1 obtained in step S21 (the height of the sludge 1 deposited in each area A) (step S22 in Figure 6).

[0093] Specifically, when the control device 200 determines that the height (hereinafter also referred to as the first height) of the sludge 1 (sludge 1 deposited in area A2 or area A4) located on the Z1 direction side (above) of the ash discharge pipe 23 is higher than the height (hereinafter also referred to as the second height) of the sludge 1 (sludge 1 deposited in area A1 or area A3) located above the ash discharge pipe 24, it identifies the direction (hereinafter also referred to as the first conveying direction) in which the sludge 1 can be conveyed relative to the ash discharge pipe 24 as the conveying direction of the sludge 1 (the rotation direction of the screw 22).

[0094] On the other hand, when the control device 200 determines, for example, that the height of the sludge 1 (sludge 1 deposited in area A1 or area A3) deposited in area A located on the Z1 side (above) of the ash discharge pipe 24 is higher than the height of the sludge 1 (sludge 1 deposited in area A2 or area A4) deposited in area A located above the ash discharge pipe 23, it identifies a direction in which the sludge 1 can be transported relative to the ash discharge pipe 23 (hereinafter also referred to as the second transport direction) as the transport direction of the sludge 1 (rotation direction of the screw 22).

[0095] Thereafter, the control device 200 controls the screw 22 so that the transport direction of the sludge 1 (the rotation direction of the screw 22) is the transport direction identified in step S22 (step S23 in FIG. 6).

[0096] That is, for example, when the first transport direction is specified as the transport direction of the sludge 1 in step S22, the control device 200 controls the screw 22 so that the transport direction of the sludge 1 becomes the first transport direction, thereby controlling the sludge 1 deposited on the X2 direction side to be discharged from the incinerator 100 with priority over the sludge 1 deposited on the X1 direction side. Also, for example, when the second transport direction is specified as the transport direction of the sludge 1 in step S22, the control device 200 controls the screw 22 so that the transport direction of the sludge 1 becomes the second transport direction, thereby controlling the sludge 1 deposited on the X1 direction side to be discharged from the incinerator 100 with priority over the sludge 1 deposited on the X2 direction side.

[0097] As a result, the control device 200 can perform control so that the height of the sludge 1 deposited in each area A becomes uniform, for example, by performing the second sludge discharge control.

[0098] [Specific example of incineration system 1000 in the first embodiment] Next, a specific example of the incineration system 1000 in the first embodiment will be described. Figures 7 and 8 are diagrams for explaining a specific example of the incineration system 1000 in the first embodiment.

[0099] As shown in Figure 7, for example, if the height of sludge 1 deposited on the X2 side of the incinerator 100 is higher than the height of sludge 1 deposited on the X1 side of the incinerator 100, the control device 200 controls the damper 32 so that sludge 1 is supplied to area A (area A1 or area A3) on the X1 side, as shown by the dashed arrow in Figure 7.

[0100] In this case, the control device 200 controls the rotation direction of the screw 22 so that the transport direction of the sludge 1 is the direction toward the ash discharge pipe 24 (first transport direction).

[0101] Furthermore, in the example shown in Figure 7, for example, when the height of all of the sludge 1 deposited in each area A is higher than a predetermined height, the control device 200 increases the rotation speed of the screw 22, thereby increasing the amount of sludge 1 discharged (amount discharged per unit time) from the ash discharge pipe 23 and the ash discharge pipe 24.

[0102] On the other hand, in the example shown in Figure 7, for example, if the height of all of the sludge 1 deposited in each area A is lower than a predetermined height, the control device 200 reduces the amount of sludge 1 discharged (amount discharged per unit time) from the ash discharge pipe 23 or the ash discharge pipe 24 by slowing down the rotation speed of the screw 22 or by stopping the rotation of the screw 22.

[0103] Also, as shown in Figure 8, for example, if the height of sludge 1 deposited on the X1 side of the incinerator 100 is higher than the height of sludge 1 deposited on the X2 side of the incinerator 100, the control device 200 controls the damper 32 so that sludge 1 is supplied to area A (area A2 or area A4) on the X2 side, as shown by the dashed arrow in Figure 8.

[0104] In this case, the control device 200 controls the rotation direction of the screw 22 so that the transport direction of the sludge 1 is the direction toward the ash discharge pipe 23 (second transport direction).

[0105] Furthermore, in the example shown in Figure 8, for example, when the height of all of the sludge 1 deposited in each area A is higher than a predetermined height, the control device 200 increases the rotation speed of the screw 22, thereby increasing the amount of sludge 1 discharged (amount discharged per unit time) from the ash discharge pipe 23 and the ash discharge pipe 24.

[0106] On the other hand, in the example shown in Figure 8, for example, if the height of all of the sludge 1 deposited in each area A is lower than a predetermined height, the control device 200 reduces the amount of sludge 1 discharged (amount discharged per unit time) from the ash discharge pipe 23 or the ash discharge pipe 24 by slowing down the rotation speed of the screw 22 or by stopping the rotation of the screw 22.

[0107] Thus, the incineration system 1000 in this embodiment comprises, for example, an incinerator 100 that incinerates sludge 1 introduced through a sludge introduction pipe 12 provided above and discharges incineration ash 1a from an ash discharge pipe 23 or the like provided below, a damper 31 or the like that adjusts the area A into which the sludge 1 is introduced (hereinafter also referred to as introduction area A), a height sensor 41 or the like that measures the accumulation status of the sludge 1 within the incinerator 100, and a control device 200 that controls the introduction direction of the sludge 1 by controlling the damper 31 or the like in accordance with the accumulation status measured by the height sensor 41 or the like.

[0108] Specifically, in the incineration system 1000 of this embodiment, the damper 31 etc. is attached, for example, to the sludge injection pipe 12, and adjusts the injection direction of the sludge 1 in the incinerator 100 to at least one of a plurality of directions toward each of a plurality of areas A in the incinerator 100. In the incineration system 1000 of this embodiment, the height sensor 41 etc. measures, for example, the accumulation state of the sludge 1 accumulated in each of the plurality of areas A. Furthermore, in the incineration system 1000 of this embodiment, the control device 200 controls the injection direction of the sludge 1, for example, by controlling the damper 31 etc.

[0109] More specifically, in the incineration system 1000 of this embodiment, the dampers 31 and the like include, for example, a damper 31 that adjusts the input direction along a first direction, and a damper 32 that adjusts the input direction along a second direction different from the first direction. In the incineration system 1000 of this embodiment, the control device 200 controls the input direction of the sludge 1 by controlling at least one of the dampers 31 and 32 in accordance with the accumulation state of the sludge 1 measured by, for example, a height sensor 41 or the like.

[0110] Furthermore, in the incineration system 1000 of this embodiment, the control device 200 controls the damper 31, etc., so that the direction in which the sludge 1 is input is the direction corresponding to area A in which the accumulation state of the sludge 1 measured by the height sensor 41, etc., among multiple directions, satisfies the conditions.

[0111] The incineration system 1000 of this embodiment also has a screw 22 that is provided in the incinerator 100, extends toward the ash discharge pipe 23, etc., and conveys the incineration ash 1a in the incinerator 100 toward the ash discharge pipe 23, etc. In the incineration system 1000 of this embodiment, the control device 200 controls the screw 22 to control at least one of the conveying speed and conveying direction of the incineration ash 1a, depending on the accumulation state of the sludge 1 measured by the height sensor 41, etc.

[0112] As a result, in the incineration system 1000 of this embodiment, it is possible, for example, to suppress the occurrence of uneven flow of combustion air within the incinerator 100. Therefore, in the incineration system 1000 of this embodiment, it is possible, for example, to reduce unburned carbon in the combustion chamber 11, and to suppress the occurrence of abnormal combustion in the combustion chamber 11. In other words, in the incineration system 1000 of this embodiment, it is possible, for example, to suppress the occurrence of a local high-temperature field due to the combustion of unburned carbon, and to suppress the generation of clinker.

[0113] Note that, when the incineration system 1000 has only damper 31 of damper 31 and damper 32, the control device 200 may, for example, control the input direction of the sludge 1 by controlling damper 31. Also, when the incineration system 1000 has only damper 32 of damper 31 and damper 32, the control device 200 may, for example, control the input direction of the sludge 1 by controlling damper 32. Furthermore, even when the incineration system 1000 has both damper 31 and damper 32, the control device 200 may, for example, control the input direction of the sludge 1 by controlling only one of dampers 31 and 32.

[0114] [Incineration system 1000 in the first modified example] Next, an incineration system 1000 in the first modified example will be described. Figure 9 is a diagram illustrating the incineration system 1000 in the first modified example. Below, differences from the incineration system 1000 in the first embodiment will be described.

[0115] As shown in FIG. 9, for example, a plurality of stirring blades 14a are attached to the outer periphery of the air diffuser 14 in this modified example.

[0116] In this modified example, the diffuser pipe 14 has, for example, one end extended outside the incinerator 100 and supported rotatably by a support member (not shown), and further rotates around its longitudinal axis by driving a motor 15 connected to the one end extended outside the incinerator 100.

[0117] That is, each agitating blade 14a in this modified example is, for example, a member that rotates around the aeration pipe 14 in association with the rotation of the aeration pipe 14. The aeration pipe 14 in this modified example supplies combustion air to the sludge 1 accumulated in the incinerator 100, and agitates the sludge 1 accumulated near the aeration pipe 14 by the rotation (movement) of each agitating blade 14a in association with the rotation of the aeration pipe 14.

[0118] Specifically, in this modified example, when the control device 200 determines that the difference between the maximum and minimum heights of the sludge 1 accumulated in each area A (the height of the sludge 1 measured by the height sensor 41, etc.) is greater than or equal to a predetermined threshold, it drives the motor 15 to rotate the aeration pipe 14, thereby rotating each stirring blade 14a around the aeration pipe 14.

[0119] As a result, the incineration system 1000 in this modified example can, for example, make the height of sludge 1 accumulated in the incinerator 100 more uniform, and can further reduce the occurrence of areas (sludge 1) where there is insufficient supply of combustion air.

[0120] [Incineration system 1000 in the second modified example] Next, an incineration system 1000 in the second modified example will be described. Figure 10 is a diagram illustrating the incineration system 1000 in the second modified example. Below, differences from the incineration system 1000 in the first embodiment will be described.

[0121] The incinerator 100 in this modification has, for example, a sludge injection pipe 16 instead of the sludge injection pipe 12.

[0122] The sludge injection pipe 16 in this modification is provided, for example, on the side wall of the incinerator 100 (for example, the side wall on the X2 direction side of the incinerator 100), and the sludge 1 is injected into the incinerator 100 from the side wall side of the incinerator 100.

[0123] 10, the incinerator 100 in this modified example has, for example, a damper 33 and a spreader 34 instead of the dampers 31 and 32. Hereinafter, the damper 33 and the spreader 34 will also be collectively referred to as the adjustment mechanism.

[0124] The damper 33 is provided, for example, in a partial pipe 16a of the sludge injection pipe 16 that extends along the Z-axis direction, and adjusts the injection direction of the sludge 1 into the incinerator 100 along the first direction.

[0125] Specifically, the damper 33 includes, for example, a rotation shaft 33a rotatably attached along the X-axis direction on the inner wall of the partial pipe 16a, and a plate-like member 33b attached to the rotation shaft 33a and having a shape extending on the XZ plane within a range that does not contact the inner wall of the partial pipe 16a. That is, the plate-like member 33b is a member that rotates around the rotation shaft 33a as the rotation shaft 33a rotates.

[0126] The damper 33 adjusts the inclination angle of the plate-shaped member 33b (the inclination angle relative to the XZ plane) by, for example, rotating the plate-shaped member 33b around the rotation axis 33a, and adjusts the direction in which the sludge 1 is introduced into the incinerator 100 along the Y-axis direction.

[0127] Specifically, the damper 33 adjusts the input position of the sludge 1 in the combustion chamber 11 to the Y1 direction (e.g., area A1 or area A2) by, for example, adjusting the end of the plate-shaped member 33b on the Z1 direction side so that it tilts toward the Y2 direction, in other words, by adjusting the end of the plate-shaped member 33b on the Z2 direction side so that it tilts toward the Y1 direction.

[0128] In addition, the damper 33 adjusts the input position of the sludge 1 in the combustion chamber 11 to the Y2 direction (e.g., area A3 or area A4) by, for example, adjusting the end of the plate-shaped member 33b on the Z1 direction side so that it tilts toward the Y1 direction, in other words, by adjusting the end of the plate-shaped member 33b on the Z2 direction side so that it tilts toward the Y2 direction.

[0129] The spreader 34 is provided, for example, in a partial pipe 16b (partial pipe 16b that is directly connected to the incinerator 100) of the sludge inlet pipe 16 that extends along the X-axis direction, and adjusts the inlet direction of the sludge 1 into the incinerator 100 along the second direction.

[0130] Specifically, the spreader 34 has, for example, a rotating shaft 34a rotatably attached along the Y-axis direction inside the partial pipe 16b, and a plurality of blade members 34b attached to the outer circumferential surface of the rotating shaft 34a. That is, the blade members 34b are members that rotate around the rotating shaft 34a as the rotating shaft 34a rotates.

[0131] The spreader 34, for example, rotates each blade member 34b around the rotation axis 34a so that the rotation direction when viewed from the Y1 direction side (the rotation direction in the state shown in Figure 10) is counterclockwise, thereby causing the sludge 1 that has fallen from the Z1 direction side (damper 33) to come into continuous contact with each blade member 34b and throwing (scattering) it into the X1 direction side (the X1 direction side within the incinerator 100).

[0132] Specifically, the spreader 34 adjusts the input position of the sludge 1 in the combustion chamber 11 to the X2 direction side (e.g., area A2 or area A4) within the incinerator 100, for example, by setting the rotational speed of the rotating shaft 34a (the rotational speed of each blade member 34b) to a first speed.

[0133] In addition, the spreader 34 adjusts the input position of the sludge 1 in the combustion chamber 11 to the X1 direction side (e.g., area A1 or area A3) within the incinerator 100, for example, by setting the rotational speed of the rotating shaft 34a (the rotational speed of each blade member 34b) to a second speed that is faster than the first speed.

[0134] The control device 200 then controls the direction in which the sludge 1 is introduced into the incinerator 100 (sludge introduction control) by controlling at least one of the damper 33 and the spreader 34 depending on the accumulation status of the sludge 1 in each area A measured, for example, by a height sensor 41, etc.

[0135] Specifically, the control device 200, for example, identifies one of the multiple areas A where the height of the sludge 1 measured by the height sensor 41 or the like is equal to or less than a threshold value. Furthermore, the control device 200, for example, identifies one of the multiple areas A where the height of the sludge 1 measured by the height sensor 41 or the like is the lowest. Then, the control device 200 controls at least one of the inclination angle of the plate-like member 33b of the damper 33 and the rotation speed of the rotation shaft 34a of the spreader 34 so that the direction toward the identified area A is the direction in which the sludge 1 is introduced from the sludge introduction pipe 16 into the incinerator 100.

[0136] As a result, the incineration system 1000 in this modified example can perform control so that the height of the sludge 1 deposited in each area A is uniform, similar to the incineration system 1000 in the first embodiment, for example. [Explanation of symbols]

[0137] 1: Sludge 1a: Incineration ash 11: Combustion chamber 12: Sludge injection pipe 13: Exhaust gas exhaust pipe 14: Aeration pipe 14a: stirring blade 15: motor 16: Sludge inlet pipe 21: Ash discharge chamber 22: Screw 22a: Screw shaft 22b: screw blade 23: ash discharge pipe 24: Ash discharge pipe 31: Damper 31a: Rotating shaft 31b: Plate-shaped member 32: Damper 32a: Rotating shaft 32b: Plate-shaped member 33: Damper 33a: Rotating shaft 33b: Plate-shaped member 34: Spreader 34a: Rotating shaft 34b: Blade member 41: Height sensor 42: Height sensor 43: Height sensor 44: Height sensor 100: Incinerator 200: Control device 201: CPU 202: Memory 203: Communication device 204: Storage medium 205: Bus 210: Program 230: Information storage area L: Combustion layer

Claims

1. An incinerator that incinerates materials fed into it through an inlet pipe provided above it and discharges the incineration ash through an outlet pipe provided below it; an adjustment mechanism for adjusting the input area into which the incineration material is input; a measuring device for measuring the accumulation status of the incineration materials in the incinerator; and a control device that controls the adjustment mechanism in accordance with the accumulation condition measured by the measuring device.

2. The adjustment mechanism is attached to the input pipe and adjusts the input direction of the material to be incinerated in the incinerator to at least one of a plurality of directions toward each of a plurality of regions in the incinerator; The measuring device measures the accumulation status of the materials to be incinerated accumulated in each of the plurality of areas, The incineration system according to claim 1 , wherein the control device controls the input direction by controlling the adjustment mechanism.

3. The adjustment mechanism includes: a first adjustment mechanism that adjusts the input direction along a first direction; a second adjustment mechanism that adjusts the input direction along a second direction different from the first direction, The incineration system described in claim 2, wherein the control device controls the input direction by controlling at least one of the first adjustment mechanism and the second adjustment mechanism depending on the accumulation condition measured by the measuring device.

4. The incineration system according to claim 2, wherein the control device controls the adjustment mechanism so that the input direction is the direction corresponding to the area where the accumulation condition measured by the measuring device satisfies the condition among the plurality of directions.

5. Further, a conveying mechanism is provided in the incinerator, extends toward the discharge pipe, and conveys the incineration ash in the incinerator toward the discharge pipe, The incineration system according to claim 2, wherein the control device controls the transport mechanism to control at least one of the transport speed and transport direction of the incineration ash according to the accumulation condition measured by the measuring device.

6. An incineration method for an incineration system comprising an incinerator that incinerates materials fed from an inlet pipe installed above and discharges incineration ash from a discharge pipe installed below, an adjustment mechanism that adjusts the incineration area into which the materials are fed, and a measuring device that measures the accumulation status of the materials in the incinerator, An incineration method, comprising controlling the adjusting mechanism in accordance with the accumulation condition measured by the measuring device.

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