Incineration system and incineration method
The incineration system addresses non-uniform combustion by controlling compressed air supply to maintain sludge distribution and temperature uniformity, preventing unburned carbon and clinker formation.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- METAWATER CO LTD
- Filing Date
- 2022-07-04
- Publication Date
- 2026-06-23
AI Technical Summary
Existing incineration systems face issues with locally high-temperature combustion states due to non-uniform combustion, leading to unburned carbon and clinker formation.
The incineration system includes an incinerator, incineration air supply pipes, air suppliers, and a control device that adjusts compressed air supply based on the incineration status within the incinerator to maintain uniform sludge distribution and temperature.
This approach suppresses the generation of locally high-temperature fields, preventing unburned carbon and clinker formation by ensuring uniform combustion.
Smart Images
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Abstract
Description
Technical Field
[0001] The present invention relates to an incineration system and an incineration method.
Background Art
[0002] Various incineration systems equipped with incinerators for incinerating sewage sludge (hereinafter, also simply referred to as sludge) have been proposed (see Patent Documents 1 and 2).
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Patent Document 2
Summary of the Invention
Problems to be Solved by the Invention
[0004] Here, during sludge incineration, it is desired to suppress a locally high-temperature combustion state generated due to non-uniform combustion.
Means for Solving the Problems
[0005] To achieve the above suppression, the incineration system in the present invention includes an incinerator for incinerating an object to be incinerated, one or more incineration air supply pipes for supplying incineration air for the object to be incinerated, one or more air suppliers for supplying compressed air into the incinerator, and a control device for controlling the supply of the compressed air by the one or more air suppliers according to the incineration status of the object to be incinerated in the incinerator.
Effects of the Invention
[0006] According to the incinerator in the present invention, it is possible to suppress the generation of a locally high-temperature field.
Brief Description of the Drawings
[0007] [Figure 1] Figure 1 is a diagram showing the configuration of the incineration system 900 in a comparative example. [Figure 2] Figure 2 is a diagram showing the configuration of the incineration system 900 in the comparative example. [Figure 3] Figure 3 is a diagram showing the configuration of the incineration system 100 in the first embodiment. [Figure 4] Figure 4 is a cross-sectional view AA of the incineration system 100 in the first embodiment. [Figure 5] Figure 5 is a flowchart illustrating the processing in the control device 50 in the first embodiment. [Figure 6] Figure 6 is a diagram showing the configuration of the incineration system 200 in the second embodiment. [Figure 7] Figure 7 is a cross-sectional view of the BB of the incineration system 200 in the second embodiment. [Figure 8] Figure 8 is a flowchart illustrating the processing in the control device 50 in the second embodiment. [Modes for carrying out the invention]
[0008] Embodiments of the present invention will be described below with reference to the drawings. However, these embodiments do not limit the technical scope of the present invention.
[0009] [Incineration system 900 in comparative example] First, we will describe the incineration system 900 in the comparative example. Figures 1 and 2 are configuration diagrams of the incinerator system 900 in the comparative example.
[0010] As shown in Figure 1, the incineration system 900 includes, for example, an incinerator 10 and an ash discharge device 20.
[0011] The incinerator 10 includes, for example, a combustion chamber 11 for incinerating sludge 1 (hereinafter also referred to as material to be incinerated 1), a sludge inlet 12, an exhaust gas outlet 13, and an incineration air supply pipe 14.
[0012] The combustion chamber 11 is the internal space of the incinerator 10, and for example, sludge 1 introduced from the sludge inlet 12 located at the upper end of the incinerator 10 is deposited inside. In the combustion chamber 11, the sludge 1 is burned by incineration air supplied by one or more incineration air supply pipes 14.
[0013] The exhaust gas generated by the combustion of sludge 1 is transported, for example, to an exhaust gas treatment facility (not shown) via the exhaust gas outlet 13. Specifically, the exhaust gas generated by the incineration of sludge 1 (hereinafter also simply referred to as exhaust gas) is transported to, for example, a white smoke prevention air preheater that generates heated air (white smoke prevention air) to prevent water vapor in the exhaust gas from appearing as white smoke, a dust collector that collects impurities in the exhaust gas, and NO in the exhaust gas by contacting it with water. X Ya SO X The materials are then sequentially transferred to scrubbing towers and other facilities that remove components such as these.
[0014] The incineration air supply pipe 14 supplies (injects) incineration air, supplied from, for example, an air supply device (not shown) located outside the incinerator 10, to the sludge 1 accumulated in the combustion chamber 11 through a plurality of ejection holes (not shown) provided in the incineration air supply pipe 14. Specifically, each of the one or more incineration air supply pipes 14 (each of the six incineration air supply pipes 14 arranged in the X direction in the example shown in Figure 1) supplies incineration air, for example, toward the sludge 1 accumulated above the incineration air supply pipe 14 (towards the Z1 direction in the example shown in Figure 1), as shown by the solid arrows in Figure 1. That is, in the combustion chamber 11, for example, the sludge 1 is incinerated in the layer L (hereinafter also referred to as the combustion layer L) above the incineration air supply pipe 14. Each of the one or more incineration air supply pipes 14 may be, for example, a pipe extending in the Y direction, as shown in Figure 1. Furthermore, the multiple ejection holes in each incineration air supply pipe 14 may be arranged, for example, along the Y direction.
[0015] The ash discharge device 20 is installed, for example, at the bottom of the incinerator 10 (on the Z2 direction side of the incinerator 10), and has an ash discharge chamber 21, a screw 22 (hereinafter also referred to as a conveyor 22), an ash discharge port 23, and an ash discharge port 24.
[0016] The ash discharge chamber 21 is an internal space of the ash discharge device 20, and discharges, for example, incineration ash 1a (hereinafter also referred to as residue 1a) generated by incinerating sludge 1 in the combustion chamber 11 to the outside of the incineration system 900.
[0017] The upper end of the ash discharge chamber 21 (the end on the Z1 direction side in the example shown in FIG. 1) is open to the combustion chamber 11, for example, as shown in FIG. 1. That is, the ash discharge chamber 21 communicates with the combustion chamber 11 inside. And inside the combustion chamber 11 and the ash discharge chamber 21, incineration ash 1a is deposited between the bottom of the ash discharge chamber 21 and the vicinity of the combustion layer L, and further, sludge 1 during or before incineration is deposited thereon. Therefore, when the incineration ash 1a deposited in the ash discharge chamber 21 is discharged to the outside through the ash discharge port 23, the sludge 1 and incineration ash 1a deposited inside the combustion chamber 11 and the ash discharge chamber 21 move downward (in the Z2 direction in the example shown in FIG. 1) along with the discharge of the incineration ash 1a deposited in the ash discharge chamber 21.
[0018] The screw 22 has a screw shaft 22a, a first screw blade 22b, and a second screw blade 22c, and transfers the incineration ash 1a deposited in the ash discharge chamber 21 to the vicinity of the ash discharge port 23 and the ash discharge port 24.
[0019] The screw shaft 22a is, for example, a shaft extending in one horizontal direction (from the X1 direction side to the X2 direction side in the example shown in FIG. 1), and one end (the end on the X1 direction side in the example shown in FIG. 1) is led out of the ash discharge device 20 and is rotatably supported by a support member (not shown). And the screw shaft 22a rotates around the long axis by the drive of a motor 25 connected to one end led out of the ash discharge device 20.
[0020] The first screw blade 22b is, for example, attached to the outer circumference of the screw shaft 22a and extends spirally toward the end of the screw shaft 22a on the ash discharge port 23 side (the end on the X1 direction side in the example shown in Figure 1).
[0021] The second screw blade 22c is, for example, attached to the outer circumference of the screw shaft 22a and extends spirally toward the end of the screw shaft 22a on the ash discharge port 24 side (the end on the X2 direction side in the example shown in Figure 1). That is, the second screw blade 22c has a shape that is symmetrical to the first screw blade 22b with respect to the central position in the horizontal direction (X direction in the example shown in Figure 1) of the ash discharge chamber 21.
[0022] The ash discharge port 23 discharges the incinerated ash 1a, which has been moved to the vicinity of the ash discharge port 23 by, for example, the screw 22, to the outside of the incineration system 100.
[0023] The ash discharge port 24 discharges the incinerated ash 1a, which has been moved to the vicinity of the ash discharge port 24 by, for example, the screw 22, to the outside of the incineration system 100.
[0024] Thus, in the comparative example, the incineration system 900 does not agitate or mix the sludge 1 by vigorously fluidizing silica sand (not shown) inside the incinerator 10, as is done in a so-called fluidized bed incinerator. Therefore, in the incineration system 900, it is possible to lower the air pressure supplied into the incinerator 10 compared to, for example, a fluidized bed incinerator.
[0025] Furthermore, the incineration system 900 in the comparative example can reduce the dust concentration in the exhaust gas discharged from the exhaust gas outlet 13 compared to a fluidized bed incinerator by, for example, discharging incinerated ash 1a from the ash outlet 23 or ash outlet 24, thereby simplifying the exhaust gas treatment facility downstream of the exhaust gas outlet 13.
[0026] Here, it is preferable that the sludge 1 introduced into the incinerator 10 from the sludge inlet 12 is introduced in such a way that the height of the sludge 1 inside the incinerator 10 (the height in the Z direction in the example shown in Figure 1) is uniform.
[0027] However, if, for example, the properties of the sludge inside the incinerator 10 change or the flow rate fluctuates, an uneven distribution of sludge 1 may occur within the incinerator 10. When an uneven distribution of sludge 1 occurs within the incinerator 10, for example, the incineration air supplied from the incineration air supply pipe 14 will flow unevenly, and the supply of incineration air to the sludge 1 during incineration (i.e., the sludge 1 located in the combustion layer L) will not be uniform. As a result, as shown in Figure 2, unburned carbon 1b may be generated in areas where sufficient incineration air is not supplied (i.e., areas with a low air ratio) within the incinerator 10, which may cause abnormal combustion within the incinerator 10. Specifically, in this case, for example, the combustion of unburned carbon 1b may generate a localized high-temperature field within the incinerator 10, potentially leading to the generation of clinker.
[0028] Therefore, in this embodiment, the incineration system 100, for example, if it detects the presence of a location where the sludge 1 is piled higher than other locations, supplies (blows out) compressed air to the sludge 1 to blow away the sludge 1 that is piled higher than other locations, thereby making the height of the sludge 1 in the incinerator 10 uniform. The incineration system 100 in the first embodiment will be described below.
[0029] [Incineration system 100 in the first embodiment] Figure 3 is a configuration diagram of the incineration system 100 in the first embodiment. Figure 4 is a cross-sectional view AA of the incineration system 100 in the first embodiment. Figure 5 is a flowchart illustrating the processing in the control device 50 in the first embodiment.
[0030] As shown in Figures 3 and 4, the side wall 10a of the incinerator 10 is provided with, for example, an air supply port 10b for supplying compressed air into the incinerator 10.
[0031] Furthermore, the incineration system 100 may further include, for example, a monitoring device 30, an air supply device 40, and a control device 50.
[0032] The monitoring device 30 is, for example, a device installed on the ceiling inside the incinerator 10, and is a measuring instrument that measures the height of the sludge 1 accumulated at each of one or more locations (regions) inside the incinerator 10 (in the example shown in Figure 3, the height in the Z direction). Specifically, the monitoring device 30 measures the height of the sludge 1 accumulated at each of the multiple locations on the surface of the sludge 1 (in the example shown in Figure 3, multiple locations included in the XY plane). The monitoring device 30 may be, for example, a laser distance meter.
[0033] The air supply unit 40 generates compressed air and supplies (injects) it into the incinerator 10. Specifically, the air supply unit 40 supplies compressed air into the incinerator 10, for example, via an air supply pipe 41.
[0034] The control device 50 performs a process to control the supply of compressed air by the air supplyer 40 based on, for example, the height of the sludge 1 measured by the monitoring device 30. The control device 50 is, for example, a computer device having a CPU (Central Processing Unit) and memory.
[0035] Specifically, as shown in Figure 5, the control device 50 refers to information indicating the height of the sludge 1 measured by the monitoring device 30, for example, to determine whether there is a position (hereinafter also referred to as the first position) where the height of the sludge 1 is higher than a predetermined height or more than other positions (step S1 in Figure 5). In other words, the first position is, for example, a position where the layer height of the sludge 1 (height of the combustion layer L) is non-uniform compared to other positions.
[0036] Then, for example, if it is determined that a first position exists (YES in step S1), the control device 50 controls the air supplyer 40 so that compressed air is supplied from the air supplyer 40 towards the incinerator 10 (step S2 in Figure 5).
[0037] On the other hand, if it is determined, for example, that the first position does not exist (NO in step S1), the control device 50 does not perform the process in step S2.
[0038] In addition, in step S1, the control device 50 may, for example, identify the position where the height of the sludge 1 is highest as the first position.
[0039] Specifically, the control device 50 may, for example, identify the position where the height of the sludge 1 measured by the monitoring device 30 is highest, and calculate the difference between the height of the identified position and the heights of other positions (other positions where the height of the sludge 1 is measured by the monitoring device 30). Then, the control device 50 may, for example, identify the position where the height of the sludge 1 is highest as the first position if it determines that a predetermined percentage (for example, 50% or more) of the calculated difference is above a threshold.
[0040] Furthermore, in step S1, the control device 50 may, for example, identify the position where the sludge 1 is highest and the position where the sludge 1 is lowest, and calculate the difference between the height of the highest position and the height of the lowest position. Then, for example, if the calculated difference is greater than or equal to a threshold, the control device 50 may identify the position where the sludge 1 is highest as the first position.
[0041] As described above, the incineration system 100 in this embodiment includes, for example, an incinerator 10 for incinerating sludge 1, one or more incineration air supply pipes 14 for supplying air for incinerating the sludge 1, one or more air supplyers 40 for supplying compressed air into the incinerator 10, and a control device 50 that controls the supply of compressed air by one or more air supplyers 40 according to the incineration status of the sludge 1 in the incinerator 10.
[0042] Furthermore, the incineration system 100 in this embodiment includes, for example, a monitoring device 30 that monitors the incineration status of the sludge 1 in the incinerator 10, and the control device 50 controls the supply of compressed air to the incinerator 10 from one or more air supplyers 40 when it determines that the incineration status monitored by the monitoring device 30 satisfies predetermined conditions. Specifically, the control device 50 determines, for example, that the incineration status in the incinerator 10 satisfies predetermined conditions when it determines that there is a position (first position) on the surface of the sludge in the incinerator 10 where the height of the sludge 1 is higher than a predetermined height or more than other positions.
[0043] In other words, for example, if the height of the sludge 1 inside the incinerator 10 is uneven, unburned carbon 1b may be generated inside the incinerator 10, potentially causing abnormal combustion inside the incinerator 10. Therefore, the incineration system 100 in this embodiment monitors whether the height of the sludge 1 inside the incinerator 10 is uniform as an indicator of the incineration status of the sludge 1 inside the incinerator 10. When it detects that there is an imbalance in the height of the sludge 1 inside the incinerator 10, the incineration system 100 determines, for example, that it is necessary to improve the incineration status of the sludge 1 inside the incinerator 10, and makes the height of the sludge inside the incinerator 10 uniform by injecting compressed air into the incinerator 10.
[0044] As a result, the incineration system 100 in this embodiment can suppress the occurrence of areas where sufficient incineration air is not supplied, and thus suppress the generation of unburned carbon 1b. Therefore, the incineration system 100 can suppress the occurrence of abnormal combustion in the incinerator 10, and thus suppress the generation of clinker.
[0045] In the above example, the case described was one in which an air supply port 10b is provided on the side wall 10a of the incinerator 10 and compressed air is supplied into the incinerator 10 using an air supply pipe 41 that communicates with the air supply port 10b, but the system is not limited to this. Specifically, the incineration system 100 may, for example, supply compressed air into the incinerator 10 by using some of the multiple incineration air supply pipes 14 that supply incineration air (for example, incineration air supply pipes 14 that are not currently supplying incineration air).
[0046] [First modified example of incineration system 100] Next, we will describe a first modified example of the incineration system 100.
[0047] The monitoring device 30 may, for example, be a measuring instrument for the temperature distribution of the sludge 1 accumulated at each position within the incinerator 10. Specifically, the monitoring device 30 may, for example, measure the temperature of the sludge 1 accumulated at each of several positions on the surface of the sludge 1 (multiple positions included in the XY plane in the example shown in Figure 3). In this case, the monitoring device 30 may, for example, be a temperature sensor.
[0048] Furthermore, the control device 50 may perform a process to control the supply of compressed air by the air supplyer 40 based on the temperature distribution of the sludge 1 measured by the monitoring device 30.
[0049] Specifically, the control device 50 determines, for example, whether there is a position (hereinafter also referred to as the second position) where the temperature of the sludge 1 is lower than other positions by a predetermined amount or more. If, for example, the control device 50 determines that the second position exists, it controls the air supplyer 40 so that compressed air is supplied from the air supplyer 40 towards the incinerator 10.
[0050] In other words, a location where the temperature of sludge 1 is lower than that of sludge 1 at other locations (second location) is a location where, for example, unburned carbon 1b may be generated. Therefore, the control device 50 determines, for example, whether or not a second location exists, and if it determines that a second location exists, it injects compressed air into that second location.
[0051] As a result, the incineration system 100 can suppress the occurrence of abnormal combustion in the incinerator 10, for example, as explained in Figure 5, and can suppress the generation of clinker.
[0052] Furthermore, the control device 50 may, for example, identify the position where the temperature of the sludge 1 is lowest as the second position if that position is exceptionally low.
[0053] Specifically, the control device 50 may, for example, identify the location where the temperature of the sludge 1 measured by the monitoring device 30 is lowest, and calculate the difference between the temperature at the identified location and the temperatures at other locations (other locations where the temperature of the sludge 1 is measured by the monitoring device 30). Then, the control device 50 may, for example, identify the location where the temperature of the sludge 1 is lowest as a second location if it determines that a predetermined percentage (for example, 50% or more) of the calculated difference is above a threshold.
[0054] Furthermore, the control device 50 may, for example, identify the location where the sludge 1 has the lowest temperature and the location where the sludge 1 has the highest temperature, and calculate the difference between the temperature at the location where the sludge 1 has the lowest temperature and the temperature at the location where the sludge 1 has the highest temperature. Then, for example, if the calculated difference is greater than or equal to a threshold, the control device 50 may identify the location where the sludge 1 has the lowest temperature as a second location.
[0055] [Second variation of incineration system 100] Next, a second modified example of the incineration system 100 will be described.
[0056] The monitoring device 30 may be, for example, a camera that photographs the sludge 1 accumulated at various locations inside the incinerator 10.
[0057] Furthermore, the control device 50 may perform a process to control the supply of compressed air by the air supplyer 40 based on the color distribution shown in the image data (image data of the surface of the sludge 1 inside the incinerator 10) captured by the monitoring device 30.
[0058] Specifically, the control device 50 determines, for example, whether there is a position (hereinafter also referred to as the third position) corresponding to a color indicating that the temperature of the sludge 1 is below a threshold. If, for example, the control device 50 determines that the third position exists, the control device 50 controls the air supplyer 40 so that compressed air is supplied from the air supplyer 40 towards the incinerator 10.
[0059] As a result, the incineration system 100 can suppress the occurrence of abnormal combustion in the incinerator 10, for example, as explained in Figure 5, and can suppress the generation of clinker.
[0060] The control device 50 may, for example, determine whether or not a third position exists within the incinerator 10 by using a machine learning model that outputs information indicating a third position in response to the input of image data captured by the monitoring device 30.
[0061] Specifically, in this case, the control device 50 may use a machine learning model generated by performing machine learning on multiple training data, each including image data of the surface inside the incinerator 10 and information indicating the location where the third position exists (so-called labels).
[0062] As described above, the first position where the height of the sludge 1 is higher than a predetermined height than other positions, the second position where the temperature of the sludge 1 is lower than that of the sludge 1 at other positions, and the third position corresponding to a color indicating that the temperature of the sludge 1 is below a threshold, can be considered to be locations where unburned carbon 1b is likely to be generated in the horizontal direction (XY plane) of the incinerator 10, or can actually be considered to be locations where unburned carbon 1b is generated.
[0063] Therefore, the control device 50 identifies areas of uneven layer height in the horizontal direction of the incinerator 10 based on the incineration status monitored by the monitoring device 30. When the control device 50 identifies an area of unevenness, it controls the supply of compressed air to the combustion layer L of the incinerator 10 from one or more air supplyers 40.
[0064] [Incineration system 200 in the second embodiment] Figure 6 is a configuration diagram of the incineration system 200 in the second embodiment. Figure 7 is a cross-sectional view of the BB of the incineration system 200 in the first embodiment. Figure 8 is a flowchart illustrating the processing in the control device 50 in the second embodiment. The differences from the incineration system 100 in the first embodiment will be explained below.
[0065] As shown in Figures 6 and 7, the side wall 10a of the incinerator 10 is provided with, for example, a plurality of air supply ports 10b for supplying compressed air into the incinerator 10.
[0066] Specifically, as shown in Figure 7, the incinerator 10 is provided with, for example, air supply ports 10b1, 10b2, 10b3, 10b4, 10b5, 10b6, 10b7, and 10b8 along the circumferential direction of the side wall 10a.
[0067] Furthermore, the incineration system 100 includes, for example, a plurality of air supplyers 40 that generate compressed air and supply (inject) it into the incinerator 10.
[0068] Specifically, as shown in Figure 6, the incineration system 100 includes, for example, an air supplyer 40a that supplies compressed air into the incinerator 10 from an air supply port 10b1 via an air supply pipe 41a, and an air supplyer 40b that supplies compressed air into the incinerator 10 from an air supply port 10b2 via an air supply pipe 41b. Furthermore, the incineration system 100 includes, for example, an air supply unit (not shown) that supplies compressed air into the incinerator 10 from an air supply port 10b3 via an air supply pipe 41c, an air supply unit (not shown) that supplies compressed air into the incinerator 10 from an air supply port 10b4 via an air supply pipe 41d, an air supply unit (not shown) that supplies compressed air into the incinerator 10 from an air supply port 10b5 via an air supply pipe 41e, an air supply unit (not shown) that supplies compressed air into the incinerator 10 from an air supply port 10b6 via an air supply pipe 41f, an air supply unit (not shown) that supplies compressed air into the incinerator 10 from an air supply port 10b7 via an air supply pipe 41g, and an air supply unit (not shown) that supplies compressed air into the incinerator 10 from an air supply port 10b8 via an air supply pipe 41h.
[0069] The control device 50 performs a process to control the supply of compressed air from at least one of the multiple air supplyers 40, for example, based on the height of the sludge 1 measured by the monitoring device 30.
[0070] Specifically, as shown in Figure 8, the control device 50 refers to information indicating the height of the sludge 1 measured by the monitoring device 30, for example, to determine whether there is a position (first position) where the height of the sludge 1 is higher than a predetermined height or more than other positions (step S11 in Figure 8).
[0071] Then, for example, if it is determined that a first position exists (YES in step S11), the control device 50 identifies an air supply unit 40 from among the multiple air supply units 40 that is capable of supplying compressed air to the sludge 1 accumulated at the first position (hereinafter also referred to as the first air supply unit 40) (step S12 in Figure 8).
[0072] Subsequently, the control device 50 controls the supply of compressed air from the first air supplyer 40 to the sludge 1 accumulated at the first position (step S13 in Figure 8).
[0073] On the other hand, if it is determined, for example, that the first position does not exist (NO in step S11), the control device 50 does not perform the processes in steps S12 and S13.
[0074] Specifically, for example, if the control device 50 determines that the air supplyer 40 capable of supplying compressed air to the first position is the air supplyer 40a, the control device 50 controls the air supplyer 40a so that compressed air is supplied from the air supplyer 40a to the sludge 1 accumulated at the first position.
[0075] Thus, in this embodiment, the monitoring device 30 monitors the incineration status at one or more locations where compressed air can be supplied from each of the one or more air supply units 40, and the control device 50 identifies a first location among the one or more locations where compressed air can be supplied from each of the one or more air supply units 40 where the incineration status satisfies predetermined conditions, identifies a first air supply unit 40 among the multiple air supply units 40 that corresponds to the identified first location, and controls the supply of compressed air from the identified first air supply unit 40 to the first location.
[0076] In other words, in this embodiment, if the incineration system 200 detects, for example, that there is an unevenness in the height of the sludge 1 inside the incinerator 10, it identifies a first position where the height of the sludge 1 is higher than other positions. The incineration system 200 then equalizes the height of the sludge inside the incinerator 10 by, for example, using a first air supplyer 40 corresponding to the identified first position to inject compressed air into the first position.
[0077] As a result, the incineration system 200 in this embodiment can accurately supply (inject) compressed air to locations where the sludge 1 is piled high, making it possible to make the height of the sludge in the incinerator 10 more uniform. Therefore, the incineration system 200 can more effectively suppress the occurrence of areas where the incineration air is not supplied insufficiently, and thus further suppress the generation of unburned carbon 1b.
[0078] In the example above, we have described a case where multiple air supply ports 10b are provided along the circumferential direction of the side wall 10a, but this is not the only case. Specifically, each of the multiple air supply ports 10b may be provided at different heights (different heights in the Z direction). [Explanation of symbols]
[0079] 1: Sludge 1a: Incinerator ash 1b: Unburned carbon 10: Incinerator 10a: Side wall 10b: Air supply port 11: Combustion chamber 12: Sludge inlet 13: Exhaust gas outlet 14: Incineration air supply pipe 20: Ash discharge device 21: Ash discharge chamber 22: Screw 22a: Screw shaft 22b: First screw blade 22c: Second screw blade 23: Ash outlet 24: Ash outlet 25: Motor 30: Monitoring device 40: Air supply unit 40a: Air supply unit 40b: Air supply unit 41: Air supply pipe 50: Control device 100: Incineration system 200: Incineration system 900: Incineration system L: Combustion layer
Claims
1. An incinerator for burning the materials to be burned, One or more incineration air supply pipes for supplying incineration air for the materials to be incinerated, One or more air supplyers that supply compressed air into the incinerator, An incineration system comprising: a control device that controls the supply of compressed air from one or more air suppliers to the combustion layer of the incinerator in accordance with the non-uniformity of the layer height of the material to be incinerated in the horizontal direction of the incinerator; and
2. The incineration system according to claim 1, wherein the control device identifies a location of uneven layer height of the material to be incinerated in the horizontal direction of the incinerator based on the incineration status of the material to be incinerated in the incinerator, and when an uneven location is identified, controls the supply of compressed air to the combustion layer of the incinerator from the one or more air supplyers.
3. Furthermore, it is equipped with a monitoring device to monitor the incineration status, The incineration system according to claim 2, wherein the control device identifies the non-uniform area based on the incineration status monitored by the monitoring device, and when the non-uniform area is identified, controls the supply of compressed air from one or more air suppliers to the combustion bed of the incinerator.
4. The monitoring device monitors the incineration status at one or more locations from which the compressed air can be supplied from each of the one or more air supplyers. The control device is Based on the incineration status at the one or more locations monitored by the monitoring device, a first location corresponding to the non-uniform area is identified among the one or more locations. Of the one or more air supplyers mentioned above, the first air supplyer corresponding to the specified first position is identified, The incineration system according to claim 3, wherein the system controls the supply of compressed air from the identified first air supplyer to the first position.
5. An incineration method in an incineration system comprising an incinerator for incinerating materials, one or more incineration air supply pipes for supplying air for incinerating the materials, and one or more air supplyers for supplying compressed air into the incinerator, An incineration method comprising controlling the supply of compressed air from one or more air suppliers to the combustion layer of the incinerator according to the non-uniformity of the layer height of the material to be incinerated in the horizontal direction of the incinerator.