JP7093757B2 - Combustion equipment control device, combustion equipment control method and program - Google Patents

Description

The present disclosure relates to a control device for combustion equipment, a control method and program for combustion equipment.

In Patent Document 1, the ignition point and the burnout point are determined based on the temperature distribution obtained from the photographed data of the waste combustion furnace, the oxygen concentration of the exhaust gas is detected, and the total supply air whose oxygen concentration is within a predetermined range is obtained. A technique is disclosed in which the amount of combustion air is obtained by subtracting the required amount of air in the dry area and the combustion area from the total amount of supplied air to obtain the amount of combustion air and supply it to the air box.

Japanese Patent No. 3916450

Incinerators such as waste and biomass burned by combustion equipment have a problem that the combustion properties fluctuate greatly and the combustion state fluctuates and the unburned content of the incinerator fluctuates.
The present disclosure has been made to solve the above problems, and an object of the present invention is to provide a control device for combustion equipment, a control method and program for combustion equipment.

The control device for the combustion equipment according to the present disclosure includes a furnace body that defines the processing space, a grate that conveys the incinerated material in the transportation direction in the processing space, and a wind box that supplies air to the processing space. An image acquisition unit that acquires a processed image in which the processing space is divided in the transport direction, and a flame due to combustion of the incinerated object based on the processed image. A first speed correction value, which is a correction value of the speed of the grate of the section, is calculated based on the point specifying portion for specifying the burnout point, which is the rear end of the transport direction. A first speed calculation unit, a speed control unit that controls the speed of the grate of the section based on the first speed correction value, and a load state of each section based on the brightness of the processed image are shown. A second speed correction value which is a correction value of the speed of the grate of each of the sections based on the difference between the load value specifying unit that specifies the load value, which is a value, and the preset value and the load value. A second speed calculation unit that calculates the speed, a second speed control unit that controls the speed of the grate of each of the sections based on the second speed correction value, and each of the above based on the burnout point. The steam flow rate is based on the first air amount calculation unit that calculates the first air amount correction value, which is the correction value of the air amount supplied to the section, and the steam flow rate and oxygen concentration in the processing space measured by the measurement unit. The correction value and the oxygen concentration correction value are calculated, and the basic correction value obtained by adding the steam flow rate correction value and the oxygen concentration correction value is calculated as the correction value of the amount of air supplied to each of the sections. A flow concentration calculation unit and an air amount control unit that controls the amount of air supplied by the air box to each of the sections based on the first air amount correction value and the basic correction value are provided.

The method for controlling the combustion equipment according to the present disclosure includes a furnace body that defines a processing space, a grate that conveys an object to be incinerated in the processing space in the transport direction, and a wind box that supplies air to the processing space. In the control device of the combustion equipment provided with the above, the step of acquiring a processed image in which the processing space is divided in the transport direction, and the transport direction of the flame due to the combustion of the incinerated object based on the processed image. A step of specifying a burnout point at the rear end, a step of calculating a first speed correction value which is a correction value of the speed of the grate of the section based on the burnout point, and the first step. A step of controlling the speed of the grate of the section based on the speed correction value, a step of specifying a load value which is a value indicating the load state of each section based on the brightness of the processed image, and a step in advance. Based on the step of calculating the second speed correction value which is the correction value of the speed of the grate of each of the sections based on the difference between the set value and the load value, and based on the second speed correction value. , A step of controlling the speed of the grate of each of the sections, and a step of calculating a first air amount correction value which is a correction value of the amount of air supplied to each of the sections based on the burnout point. Based on the steam flow rate and oxygen concentration in the processing space measured by the measuring unit, the steam flow rate correction value and the oxygen concentration correction value are calculated, and the steam flow rate correction value and the oxygen concentration correction value are added. Based on the step of calculating the basic correction value obtained in the above as a correction value of the amount of air supplied to each of the sections, and the first air amount correction value and the basic correction value, the air box is in each of the sections. It has a step of controlling the amount of air supplied to the .

The program according to the present disclosure is a combustion facility including a furnace body that defines a processing space, a grate that conveys an object to be incinerated in the processing space in the transport direction, and a wind box that supplies air to the processing space. A step of acquiring a processed image in which the processing space is divided in the transport direction on the computer of the control device of the above, and the rear side of the transport direction of the flame due to the combustion of the incinerated object based on the processed image. A step of specifying a burnout point at the end of the air, a step of calculating a first speed correction value which is a correction value of the speed of the grate of the section based on the burnout point, and the first speed correction. A step of controlling the speed of the grate of the section based on the value and a step of specifying a load value which is a value indicating the load state of each section based on the brightness of the processed image are set in advance. Based on the difference between the value and the load value, the step of calculating the second speed correction value, which is the correction value of the speed of the grate in each of the sections, and the step based on the second speed correction value, respectively. A step of controlling the speed of the grate of the section, a step of calculating a first air amount correction value which is a correction value of the amount of air supplied to each of the sections based on the burnout point, and a measuring unit. Based on the steam flow rate and oxygen concentration in the processing space measured by, the steam flow rate correction value and the oxygen concentration correction value are calculated, and the steam flow rate correction value and the oxygen concentration correction value are added to each other. The air box supplies to each of the sections based on the step of calculating the basic correction value to be calculated as the correction value of the amount of air supplied to each of the sections, and the first air amount correction value and the basic correction value. To execute the step of controlling the amount of air to be performed.

According to the control device of the combustion equipment, the control method and the program of the combustion equipment of the present disclosure, it is possible to stably incinerate the incinerator in the combustion equipment.

It is a figure which shows the structure of the combustion equipment which concerns on embodiment of this disclosure. It is a figure which shows the stalker which concerns on embodiment of this disclosure. It is a schematic block diagram which shows the structure of the control apparatus which concerns on embodiment of this disclosure. It is a flowchart which shows the operation which concerns on the control of the speed of the grate which concerns on embodiment of this disclosure. It is a reference figure which shows the control of the speed of the grate which concerns on embodiment of this disclosure. It is a flowchart which shows the operation which concerns on the control of the air amount which concerns on embodiment of this disclosure. It is a reference figure which shows the control of the wind box which concerns on embodiment of this disclosure. It is a schematic block diagram which shows the structure of the control apparatus which concerns on embodiment of this disclosure. It is a schematic block diagram which shows the structure of the control apparatus which concerns on embodiment of this disclosure. It is a flowchart which shows the operation which concerns on the control of the secondary air control part which concerns on embodiment of this disclosure. It is a block diagram which shows the structure of the control apparatus which concerns on embodiment of this disclosure. It is a block diagram which shows the structure of the control apparatus which concerns on embodiment of this disclosure. It is a schematic block diagram which shows the structure of the computer which concerns on at least one Embodiment.

<First Embodiment>
<< Combustion device configuration >>
Hereinafter, the configuration of the combustion equipment 100 according to the first embodiment will be described. The combustion equipment 100 according to the first embodiment is an equipment for incinerating waste as an incinerated object 400. Examples of the combustion equipment 100 include a waste incinerator stoker furnace and a biomass fluidized bed boiler. The combustion equipment 100 according to the first embodiment is a waste incinerator stoker furnace.

FIG. 1 is a diagram showing the configuration of the combustion equipment 100 according to the first embodiment. The combustion equipment 100 includes a stoker furnace 1, an exhaust heat recovery boiler 8, a temperature reducing tower 9, a dust collector 11, a chimney 12, and a control device 300.

The stoker furnace 1 is a furnace that burns the incinerator 400 while transporting it. Examples of the incinerator 400 include waste and biomass. The incinerator 400 in FIG. 1 is waste. Exhaust gas is generated from the stoker furnace 1 as the incinerator 400 is burned by the stoker furnace 1. This exhaust gas is sent to the exhaust heat recovery boiler 8 provided in the upper part of the stoker furnace 1.

The exhaust heat recovery boiler 8 heats water by exchanging heat between the exhaust gas and water to generate steam. This steam is used in external equipment (not shown). The exhaust gas that has passed through the exhaust heat recovery boiler 8 is cooled by the temperature reducing tower 9 and then sent to the dust collector 11. After the soot and dust are removed by the dust collector 11, the exhaust gas is discharged into the atmosphere through the chimney 12.

Next, the configuration of the stoker furnace 1 will be described. As shown in FIG. 1, the stoker furnace 1 includes a furnace body 10, a fireplace 7 extending upward from the furnace body 10, a hopper 3 for temporarily storing an incinerator 400, and a hopper 3 into the furnace body 10. It has a feeder 31 for supplying the incinerator 400 and a stoker 6 provided at the bottom of the furnace body 10. Further, the stoker furnace 1 has a discharge chute 13 for discharging the incinerator 400 to the outside, a wind box 2 provided below the stoker 6, and a clean roller for moving the incinerator 400 to the discharge chute 13. It has 210 and a camera 220 that captures an image of the storage space V of the furnace body 10. Further, the stoker furnace 1 includes a blower B1 that sends air to the primary air line L1 and the secondary air line L2, a primary air line L1 that supplies air to the air box 2, and a secondary air line that supplies air to the fireplace 7. It has L2 and.

FIG. 2 is a diagram showing a stoker 6 in the combustion equipment 100 according to the first embodiment. As shown in FIG. 2, the stoker 6 is composed of a plurality of grate 61s. The grate 61 includes a fixed grate 61A and a movable grate 61B. The fixed grate 61A is a fixed grate 61. The movable grate 61B is a grate 61 that agitates the incinerator 400 on the grate 61 by operating in the transport direction + Da and the reverse direction of transport-Da at a constant speed. The transport direction + Da is a direction from the hopper 3 toward the discharge chute 13. Reverse transport direction-Da is the reverse direction of the transport direction Da. The configuration of the combination of the fixed grate 61A and the movable grate 61B shown in FIG. 2 is an example, and different combinations may be used.

A processing space V for burning the incinerator 400 is formed inside the furnace body 10. In this processing space V, the incinerator 400 is transported by the stoker 6 in the transport direction + Da from the feeder 31 toward the discharge chute 13. The burned incinerator 400 is discharged to the outside through the discharge chute 13. In this embodiment, the stoker 6 is provided horizontally. On the other hand, the stoker 6 according to another embodiment may be provided so as to be inclined with respect to the horizontal plane.

The furnace body 10 is designed to be divided into a drying stage 21, a combustion stage 22, and a post-combustion stage 23 in this order from the upstream side of the transport direction + Da. The drying stage 21, the combustion stage 22, and the post-combustion stage 23 partition the processing space V in the transport direction Da. The drying stage 21 is a section for drying the incinerator 400 supplied from the hopper 3 prior to combustion. The combustion stage 22 and the post-combustion stage 23 are sections for burning the incinerator 400 in a dry state. In the combustion stage 22, flame F is generated by the pyrolysis gas generated from the incinerator 400. In the post-combustion stage 23, since the fixed carbon of the incinerator 400 is burned, the flame F does not occur. That is, the flame F associated with combustion is mainly formed above the combustion stage 22.

The fireplace 7 extends upward from the upper part of the furnace body 10. Exhaust gas in the treatment space V is sent to the exhaust heat recovery boiler 8 through the fireplace 7. The primary air line L1 connects the blower B1 and the air box 2. By driving the blower B1, air is supplied to the air box 2 through the primary air line L1. The air box 2 supplies air from below the grate 61. The secondary air line L2 connects the blower B1 and the inside of the furnace 7. Combustion air is supplied into the fireplace 7 from above the grate 61 through the secondary air line L2. The wind box 2 forms the bottom surface of the processing space V. A plurality of wind boxes 2 are arranged in the transport direction Da.

The cleaner roller 210 rotates to move the incinerator 400 from the post-combustion stage 23 to the discharge chute 13. The blinker roller 210 rotates every time set by the control device 300.

The camera 220 captures a processed image in which the drying stage 21, the combustion stage 22, and the post-combustion stage 23 of the processing space V are captured. When the camera 220 captures the processing space V, the processed image generated by the camera 220 shows the bright flame generated from the incinerator 400. Examples of the camera 220 include a camera having a visible camera and a far infrared camera.

The measuring unit 230 is a device for measuring the steam flow rate and the oxygen concentration in the processing space V. The incinerator 400 is dried in the drying stage 21, and steam is generated because the water evaporates. The measuring unit 230 measures the steam flow rate due to the drying of the incinerator 400. The stronger the drying of the incinerator 400 in the drying stage 21, the higher the steam flow rate. On the other hand, in the combustion stage 22, the incinerator 400 burns using oxygen in the processing space V. That is, the stronger the combustion of the combustion stage 22 incinerator 400, the lower the oxygen concentration.

The control device 300 controls the grate 61 and the air box 2 by calculating the speed correction value of the grate 61 and the air amount correction value supplied by the air box 2. FIG. 3 is a schematic block diagram showing the configuration of the control device 300. The control device 300 includes an acquisition unit 310, a point identification unit 320, a first speed calculation unit 330, a first air amount calculation unit 340, a flow rate concentration calculation unit 350, a speed control unit 360, and an air amount control unit. 370 and. The control device 300 is connected to the combustion equipment 100 by wire or wirelessly.

The acquisition unit 310 is an example of an image measurement unit, acquires a processed image from the camera 220, and acquires a steam flow rate and an oxygen concentration from the measurement unit 230.

The point specifying unit 320 identifies the burnout point Z, which is the end on the rear side of the transport direction Da of the flame F due to the combustion of the incinerator 400, based on the processed image acquired by the acquisition unit 310. Specifically, the point specifying unit 320 identifies the burnout point Z by the following operation.

The point specifying unit 320 receives the processed image acquired by the acquisition unit 310. After that, the point specifying unit 320 binarizes with a preset threshold value based on the brightness of the processed image. The point specifying unit 320 identifies the burnout point Z with the average value of the points at which the values of the binarized processed images change. The brightness of the image relating to the place where the flame F is generated by the combustion of the incinerator 400 is high, and the brightness of the image relating to the place where the flame F is not generated is low. Therefore, the point specifying unit 320 can specify the burnout point Z by binarization as described above.

The first speed calculation unit 330 is a correction value of the speed of each grate 61 of the drying stage 21, the combustion stage 22, and the post-combustion stage 23, based on the burnout point Z specified by the point specifying unit 320. 1 Calculate the speed correction value. Specifically, the first speed calculation unit 330 calculates the first speed correction value by the following operation.

The first speed calculation unit 330 acquires the burnout point Z specified by the point identification unit 320. After that, the first speed calculation unit 330 calculates the difference between the reference burnout point associated with the drying stage 21 and the burnout point Z, and calculates the difference by PID (Proportional-Integral-Differentail). The first speed correction value associated with the drying stage 21 is calculated. The first speed calculation unit 330 also operates the combustion stage 22 and the post-combustion stage 23 as described above, and the first speed correction value associated with the combustion stage 22 and the first speed correction value associated with the post-combustion stage 23 are the first. Calculate the speed correction value.
Further, the reference burnout point is a point set in advance in each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 so that the incinerator 400 can be stably dried, burned, and post-combusted. be. An example of a reference burnout point is a burnout point set so that the ratio of the unburned portion of the incinerator 400 becomes a specific value.

The first air amount calculation unit 340 corrects the amount of air supplied by the air box 2 to each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 based on the burnout point Z specified by the point specifying unit 320. The first air amount correction value, which is a value, is calculated. Specifically, the first air amount calculation unit 340 calculates the first air amount correction value by the following operation.

The first air amount calculation unit 340 acquires the burnout point Z specified by the point identification unit 320. After that, the difference between the reference burnout point associated with the drying stage 21 and the burnout point Z is calculated, the difference is PID calculated, and the first air amount correction value associated with the drying stage 21 is calculated. do. The first air amount calculation unit 340 also operates the combustion stage 22 and the post-combustion stage 23 as described above, and is associated with the first air amount correction value associated with the combustion stage 22 and the post-combustion stage 23. The first air amount correction value and. The difference between the reference burnout point and the burnout point Z becomes a positive value when the burnout point Z is located upstream of the reference burnout point. The position of the reference burnout point is different in each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23. The position of the reference burnout point of the drying stage 21 is located most upstream of the transport direction + Da, and the position of the reference burnout point of the post-combustion stage 23 is located most downstream of the transport direction + Da.

The flow rate concentration calculation unit 350 calculates the basic correction value based on the steam flow rate and the oxygen concentration acquired by the measurement unit 230. Specifically, the flow rate concentration calculation unit 350 calculates the basic correction value by the following operation.

The flow rate concentration calculation unit 350 receives the steam flow rate and oxygen concentration acquired by the measurement unit 230. The flow rate concentration calculation unit 350 divides the acquired steam flow rate from the reference steam flow rate to calculate the difference. The flow rate concentration calculation unit 350 calculates the steam flow rate correction value by multiplying the above difference by the weight associated with the steam flow rate. Further, the flow rate concentration calculation unit 350 divides the acquired oxygen concentration from the reference oxygen concentration to calculate the difference. The flow rate concentration calculation unit 350 calculates the oxygen concentration correction value by multiplying the above difference by the weight associated with the oxygen concentration. The flow rate concentration calculation unit 350 calculates the basic correction value by adding the steam flow rate correction value and the oxygen concentration correction value.

The speed control unit 360 controls the speed of each grate 61 of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 based on the first speed correction value calculated by the first speed calculation unit 330. Specifically, the speed control unit 360 controls the speed of the grate 61 by the following operations.

The speed control unit 360 acquires the first speed correction value associated with the drying stage 21 among the first speed correction values calculated by the first speed calculation unit 330. When the first speed correction value associated with the drying stage 21 is equal to or less than a preset lower limit value, the speed control unit 360 uses the lower limit value as the first speed correction value. Further, when the first speed correction value associated with the drying stage 21 is equal to or higher than a preset upper limit value, the speed control unit 360 uses the upper limit value as the first speed correction value. Here, the upper limit value and the lower limit value of the first speed correction value are both positive values. Therefore, when the burnout point Z is located on the downstream side of the reference burnout point, the first speed correction value becomes equal to the lower limit value. This is because the difference between the reference burnout point and the burnout point Z becomes a negative value when the burnout point Z is located on the downstream side of the reference burnout point. That is, the first speed correction value is a value for promoting the movement of the burnout point Z to the downstream side when the burnout point Z exists on the upstream side beyond the reference position.

After that, the speed control unit 360 adds the first speed correction value to the basic grate speed associated with the drying stage 21, and calculates the corrected speed associated with the drying stage 21. The speed control unit 360 sends an electric signal to the actuator of the movable grate 61B of the drying stage 21 so that the movable grate 61B can move at the corrected speed. The movable grate 61B that receives the electric signal moves at the corrected speed.
The speed control unit 360 also performs the same operation as described above for the grate 61 of the combustion stage 22 and the grate 61 of the post-combustion stage 23.

In the air amount control unit 370, the air box 2 has a drying stage 21 and a combustion stage 22 based on the first air amount correction value calculated by the first air amount calculation unit 340 and the basic correction value calculated by the flow concentration calculation unit 350. , And the amount of air supplied to each of the post-combustion stages 23 is controlled. Specifically, the air amount control unit 370 controls the air box 2 by the following operations.

The air amount control unit 370 acquires the first air amount correction value associated with the drying stage 21 among the first air amount correction values calculated by the first air amount calculation unit 340. When the first air amount correction value associated with the drying stage 21 is equal to or less than a preset lower limit value, the air amount control unit 370 uses the lower limit value as the first air amount correction value. Further, in the air amount control unit 370, when the first air amount correction value associated with the drying stage 21 is equal to or higher than the preset upper limit value, the air amount control unit 370 sets the upper limit value to the first air. Used as a quantity correction value.
Here, the upper limit value and the lower limit value of the first air amount correction value are both positive values. Therefore, when the burnout point Z is located on the downstream side of the reference burnout point, the first air amount correction value becomes equal to the lower limit value. This is because the difference between the reference burnout point and the burnout point Z becomes a negative value when the burnout point Z is located on the downstream side of the reference burnout point. That is, the first air amount correction value is a value for promoting the movement of the burnout point Z to the downstream side when the burnout point Z exists on the upstream side beyond the reference position.

After that, the air amount control unit 370 acquires the basic correction value calculated by the flow rate concentration calculation unit 350. The air amount control unit 370 calculates the corrected air amount calculated by adding the first air amount correction value associated with the drying stage 21 and the basic correction value. The air amount control unit 370 sends an electric signal to the air box 2 of the drying stage 21 so that the air amount supplied to the drying stage 21 by the air box 2 becomes the corrected air amount. The air box 2 that has received the electric signal changes the opening degree of the damper provided in the air box 2 so that the amount of air supplied by the air box 2 to the drying stage 21 becomes the corrected air amount.
The air amount control unit 370 also performs the same operation as described above for the air box 2 of the combustion stage 22 and the air box 2 of the post-combustion stage 23.

<< Operation related to control of grate speed >>
Hereinafter, the operation related to the control of the speed of the grate 61 of the combustion equipment 100 will be described. FIG. 4 is a flowchart showing an operation related to the control of the speed of the grate 61.

The first speed calculation unit 330 acquires the burnout point Z specified by the point identification unit 320 (step S1).
The first speed calculation unit 330 is the difference between the burnout point Z acquired in step S1, the reference burnout point associated with each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23, and the burnout point Z. Is calculated, the difference is PID-calculated, and the first speed correction value associated with each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 is calculated (step S2).

The speed control unit 360 acquires the first speed correction value associated with each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 (step S3).
In the speed control unit 360, the first speed correction value associated with each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 is the upper limit associated with each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23. When it is equal to or more than the value (step S4: YES), the upper limit value is used as the first speed correction value (step S6).
Further, in the speed control unit 360, the first speed correction value associated with each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 is associated with each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23. If it is equal to or less than the lower limit value (step S5: YES), the lower limit value is used as the first speed correction value (step S7).

The speed control unit 360 has the basic grate speed associated with each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23, and the first one associated with each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23. The speed correction values are added to calculate the corrected speed associated with each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 (step S8).

The speed control unit 360 sends an electric signal to the actuators of the movable grate 61B of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 so that the movable grate 61B can move at the corrected speed (step S9). ..
The movable grate 61B that received the electric signal in step S9 moves at the corrected speed (step S10).

FIG. 5 is a reference diagram showing control of the speed of the grate 61.
The first speed calculation unit 330 performs a PID calculation on the reference burnout point associated with each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23, and the burnout point Z acquired by the point identification unit 320. Calculate the speed correction value. After that, the speed control unit 360 determines the first speed correction value based on the upper and lower limit limits, and transmits a signal to the movable grate 61B based on the first speed correction value and the reference grate speed. Then, the movable grate 61B is moved to the corrected speed.

By the above operation, the user of the combustion equipment 100 can control the speed of the grate 61 based on the specified burnout point Z, so that the incinerator 400 is stably dried in the combustion equipment 100. It can be burned and then burned. When the position of the burnout point Z is close to the drying stage 21, the ratio of the unburned portion of the incinerator 400 decreases, so that the amount of the incinerator 400 processed by the combustion equipment 100 per unit time is small. Therefore, the efficiency of the combustion equipment 100 is lowered. Further, when the position of the burnout point Z is close to the clean corolla 210, the ratio of the unburned portion of the incinerator 400 increases, so that it becomes difficult to reclaim the incinerator 400 after the post-combustion.

Therefore, in the control device 300 according to the present embodiment, when the position of the burnout point Z is close to the drying stage 21, the speed of the grate 61 is reduced to activate the stirring of the incinerated material 400 to activate the unburned portion. When the burnout point Z is close to the clinic roller 210, the speed of the grate 61 is increased to increase the agitation of the incinerated material 400, and the ratio of the unburned portion is decreased.

<< Operation related to air volume control >>
Hereinafter, the operation related to the control of the air amount of the combustion equipment 100 will be described. FIG. 6 is a flowchart showing an operation related to control of the amount of air.

The first air amount calculation unit 340 acquires the burnout point Z specified by the point identification unit 320 (step S21).
The first air amount calculation unit 340 has a burnout point Z acquired in step S21, a reference burnout point associated with each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23, and a burnout point Z. The difference is calculated, the difference is PID-calculated, and the first air amount correction value associated with each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 is calculated (step S22).

The air amount control unit 370 acquires the first air amount correction value associated with each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 (step S23).
In the air amount control unit 370, the first air amount correction value associated with each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 is associated with each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23. If it is equal to or greater than the upper limit value (step S24: YES), the upper limit value is used as the first air amount correction value (step S26).
Further, in the air amount control unit 370, the first air amount correction value associated with each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 is set to each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23. When it is equal to or less than the associated lower limit value (step S25: YES), the lower limit value is used as the first air amount correction value (step S27).

The air amount control unit 370 adds the first air amount correction value associated with each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 to the basic correction value calculated by the flow concentration calculation unit 350, and dries. The corrected air amount associated with each of the stage 21, the combustion stage 22, and the post-combustion stage 23 is calculated (step S28).

The air amount control unit 370 applies the corrected air amount to each of the air boxes 2 of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 by the air box 2 of the drying stage 21, the combustion stage 22, and the post-combustion stage 23. An electric signal is sent to supply each (step S29).
The air box 2 that receives the electric signal in step S29 changes the opening degree of the damper of the air box 2 and supplies the air related to the corrected air amount (step S30).

FIG. 7 is a reference diagram showing the control of the wind box 2.
The first air amount calculation unit 340 performs a PID calculation on the reference burnout point associated with each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23, and the burnout point Z acquired by the point identification unit 320. 1 Calculate the air amount correction value. After that, the air amount control unit 370 determines the first air amount correction value based on the upper and lower limit limits, and sends a signal to the air box 2 based on the first air amount correction value and the reference correction value. Send to supply the corrected air volume.

By the above operation, the user of the combustion equipment 100 can control the air box 2 based on the specified burnout point Z, so that the incinerator 400 is stably dried and burned in the combustion equipment 100. Can be post-burned.
When the position of the burnout point Z is close to the drying stage 21, the ratio of the unburned portion of the incinerator 400 decreases, so that the amount of the incinerator 400 processed by the combustion equipment 100 per unit time is small. Therefore, the efficiency of the combustion equipment 100 is lowered. Further, when the position of the burnout point Z is close to the clean corolla 210, the ratio of the unburned portion of the incinerator 400 increases, so that it becomes difficult to reclaim the incinerator 400 after the post-combustion.

Therefore, in the control device 300 according to the present embodiment, when the position of the burnout point Z is close to the drying stage 21, the opening degree of the damper of the air box 2 is lowered to reduce the ratio of the unburned portion of the incinerator 400. When it is raised and the burnout point Z is close to the clinic roller 210, the opening degree of the damper of the air box 2 is increased to reduce the ratio of the unburned portion.

In the embodiment described above, in the control device 300 of the combustion equipment 100, the air volume control unit 370 controls the air box 2 after the speed control unit 360 controls the grate 61. In addition, after the control of the air box 2 by the air amount control unit 370, the control of the grate 61 by the speed control unit 360 may be performed.

《Action / Effect》
The control device 300 of the combustion equipment 100 according to the present disclosure includes a furnace main body 10 that defines the processing space V, a grate 61 that conveys the incinerated material 400 in the transportation direction Da in the processing space V, and air in the processing space V. The control device 300 of the combustion equipment 100 including the air box 2 for supplying the above, based on the image acquisition unit for acquiring the processed image in which the section in which the processing space V is partitioned in the transport direction Da is captured, and the processed image. , A correction value of the speed of the grate 61 of the section based on the point specifying portion 320 that specifies the burnout point Z, which is the rear end of the flame F due to the combustion of the incinerated object 400 in the transport direction, and the burnout point Z. It is provided with a first speed calculation unit 330 for calculating the first speed correction value, and a speed control unit 360 for controlling the speed of the grate 61 of the section based on the first speed correction value.

Since the user of the combustion equipment 100 can control the speed of the grate 61 based on the specified burnout point Z, the incinerator 400 can be stably burned in the combustion equipment 100.

Further, each section of the control device 300 of the combustion facility 100 in which the processing space V is partitioned is a drying stage 21, a combustion stage 22, and a post-combustion stage 23 from the upstream side of the transport direction Da, and is an image acquisition unit. Acquires a processed image showing the drying stage 21, the combustion stage 22, and the post-combustion stage 23, and the first speed calculation unit 330 is the first speed of each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23. The correction value is calculated, and the speed control unit 360 controls the speed of the grate 61 of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 based on each of the first speed correction values.

Since the user of the combustion equipment 100 can control the speed of the grate 61 based on the specified burnout point Z, the incinerator 400 is stably dried, burned, and post-combusted in the combustion equipment 100. be able to.

Further, the control device 300 of the combustion equipment 100 includes a first air amount calculation unit 340 for calculating a first air amount correction value which is a correction value of the air amount to be supplied to each section based on the burnout point Z. An air amount control unit 370 that controls the amount of air supplied by the air box 2 to each section based on the first air amount correction value is provided.

Since the user of the combustion equipment 100 can control the air box 2 based on the specified burnout point Z, the incinerator 400 can be stably dried, burned, and post-combusted in the combustion equipment 100. can.

<Second embodiment>
Hereinafter, the combustion equipment 100 according to the second embodiment will be described. The combustion equipment 100 according to the second embodiment controls the speed of the grate 61 and controls the air box 2 based on the load values in the drying stage 21, the combustion stage 22, and the post-combustion stage 23.

FIG. 8 is a schematic block diagram showing the configuration of the control device 300 according to the second embodiment. In addition to the configuration of the control device 300 according to the first embodiment, the configuration of the control device 300 according to the second embodiment includes a determination unit 379, a load value specifying unit 380, a second speed calculation unit 381, and the like. A second air amount calculation unit 382, a second speed control unit 383, and a second air amount control unit 384 are provided.

The determination unit 379 acquires the burnout point Z from the point identification unit 320, and determines whether or not the burnout point Z is within a preset range. The burnout point setting range is set, for example, downstream of the reference burnout point of the post-combustion stage. That is, the determination unit 379 determines whether or not the combustion state is a burnout defective state.

The load value specifying unit 380 determines the drying stage 21, the combustion stage 22, and the post-combustion stage based on at least one of the brightness of the processed image, the water content of the incinerator 400, and the low calorific value of the incinerator 400. A load value, which is a value indicating each load state of 23, is specified. Specifically, the load value specifying unit 380 specifies the load value by the following operations. The load value becomes larger as the load related to combustion increases. The load increases as the calorific value of the incinerator increases, and decreases as the water content of the incinerator increases.

The load value specifying unit 380 divides the processed image acquired by the acquisition unit 310 into areas of the drying stage 21, the combustion stage 22, and the post-combustion stage 23, and calculates the average value of the brightness of the image related to the area. The load values of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 are specified. This is because the larger the load related to combustion, the stronger the flame, and it is estimated that the higher the brightness in the processed image, the larger the load. Further, the load value specifying unit 380 has a drying stage 21, a combustion stage 22, and a post-combustion stage based on the amount of water per unit mass of the sample incinerator 400 acquired from the incinerator 400 to be charged into the combustion equipment 100. Specify the load value of 23. Further, the load value specifying unit 380 has a drying stage 21, a combustion stage 22, and post-combustion based on a lower calorific value per unit mass of the sample incinerator 400 acquired from the incinerator 400 charged into the combustion equipment 100. The load value of the stage 23 is specified.

The second speed calculation unit 381 is a correction value of the speed of each grate 61 of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 based on the difference between the preset value and the load value. 2 Calculate the speed correction value. Specifically, the second speed calculation unit 381 calculates the second speed correction value by the following operation.

The second speed calculation unit 381 acquires the load value associated with the drying stage 21 specified by the load value specifying unit 380. The second speed calculation unit 381 calculates the difference between the preset value and the load value, calculates the difference by PID, and calculates the second speed correction value. The second speed calculation unit 381 also performs the same operation as described above for the combustion stage 22 and the post-combustion stage 23, and calculates the second speed correction value.

The second air amount calculation unit 382 is a correction value of the amount of air supplied by the air box 2 of each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23, based on the difference between the reference load value and the load value. A certain second air amount correction value is calculated. Specifically, the second air amount calculation unit 382 calculates the second air amount correction value by the following operation.

The second air amount calculation unit 382 acquires the load value associated with the drying stage 21 specified by the load value specifying unit 380. The second air amount calculation unit 382 calculates the difference between the reference load value and the load value, and PID calculates the difference to calculate the second air amount correction value. The second air amount calculation unit 382 also performs the same operation as described above for the combustion stage 22 and the post-combustion stage 23, and calculates the second air amount correction value.

When the determination unit 379 determines that the burnout point Z is within the preset range, the second speed control unit 383 determines that the dry stage 21, the combustion stage 22, and the post-combustion are based on the second speed correction value. The speed of each grate 61 of the stage 23 is controlled. Specifically, the second speed control unit 383 controls the speed of the grate 61 by the following operations. When the determination unit 379 determines that the burnout point Z is not within the preset range, the second speed control unit 383 does not operate, and the speed control unit 360 or the air amount control unit 370 operates to operate the burnout point. Z is within a certain range.

The second speed control unit 383 acquires the second speed correction value associated with the drying stage 21 among the second speed correction values calculated by the second speed calculation unit 381. When the second speed correction value associated with the drying stage 21 is equal to or less than the preset lower limit value, the second speed control unit 383 uses the lower limit value as the second speed correction value. Further, when the second speed correction value associated with the drying stage 21 is equal to or higher than the preset upper limit value, the second speed control unit 383 uses the upper limit value as the second speed correction value. Here, the upper limit value of the second speed correction value is a positive value, and the lower limit value is a negative value. Therefore, the second speed control unit promotes the movement of the incinerator so that the load increases when the load is lower than the standard, that is, when the combustion state is the low load state, and when the load is higher than the standard, the second speed control unit promotes the movement of the incinerator. That is, when the combustion state is an overload state, the movement of the incinerator is promoted so that the load is reduced.

After that, the second speed control unit 383 adds the second speed correction value to the basic grate speed associated with the drying stage 21, and calculates the second corrected speed associated with the drying stage 21. The second speed control unit 383 sends an electric signal to the actuator of the movable grate 61B of the drying stage 21 so that the movable grate 61B can move at the second corrected speed. The movable grate 61B that has received the electric signal moves at the speed after the second correction.
The second speed control unit 383 also performs the same operation as described above for the grate 61 of the combustion stage 22 and the grate 61 of the post-combustion stage 23.

When the determination unit 379 determines that the burnout point Z is within the preset range, the second air amount control unit 384 determines the second air amount correction value and the flow rate concentration calculated by the second air amount calculation unit 382. Based on the basic correction value calculated by the calculation unit 350, the air box 2 controls the amount of air supplied to each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23. Specifically, the second air amount control unit 384 controls the air box 2 by the following operations.

The second air amount control unit 384 acquires the second air amount correction value associated with the drying stage 21 among the second air amount correction values calculated by the second air amount calculation unit 382. When the second air amount correction value associated with the drying stage 21 is equal to or less than a preset lower limit value, the second air amount control unit 384 uses the lower limit value as the second air amount correction value. Further, the second air amount control unit 384 uses the second air amount control unit 384 to set the upper limit value when the second air amount correction value associated with the drying stage 21 is equal to or more than the preset upper limit value. , Used as the second air amount correction value. Here, the upper limit value of the second speed correction value is a positive value, and the lower limit value is a negative value. Therefore, the second speed control unit promotes the movement of the incinerator so that the load increases when the load is lower than the standard, that is, when the combustion state is the low load state, and when the load is higher than the standard, the second speed control unit promotes the movement of the incinerator. That is, when the combustion state is an overload state, the movement of the incinerator is promoted so that the load is reduced.

After that, the second air amount control unit 384 acquires the basic correction value calculated by the flow rate concentration calculation unit 350. The second air amount control unit 384 calculates the second corrected air amount calculated by adding the second air amount correction value associated with the drying stage 21 and the basic correction value. The second air amount control unit 384 sends an electric signal to the air box 2 of the drying stage 21 so that the amount of air supplied to the drying stage 21 by the air box 2 becomes the amount of air after the second correction. The air box 2 that has received the electric signal changes the opening degree of the damper provided in the air box 2 so that the amount of air supplied by the air box 2 to the drying stage 21 becomes the amount of air after the second correction.
The second air amount control unit 384 also performs the same operation as described above for the air box 2 of the combustion stage 22 and the air box 2 of the post-combustion stage 23.

《Action / Effect》
The control device 300 of the combustion equipment 100 according to the present disclosure is based on at least one of the brightness of the processed image, the water content of the incinerated object 400, and the low calorific value of the incinerated object 400, and the load state of each section. The second speed correction, which is the speed correction value of the grate 61 of each section, based on the difference between the load value specifying unit 380 that specifies the load value, which is the value indicating the value, and the preset value and the load value. It includes a second speed calculation unit 381 that calculates a value, and a second speed control unit 383 that controls the speed of the grate 61 of each section based on the second speed correction value.

Since the user of the combustion equipment 100 can control the speed of the grate 61 based on the specified load value, the incinerator 400 can be stably burned in the combustion equipment 100.

The control device 300 of the combustion equipment 100 according to the present disclosure is a second air amount correction which is a correction value of the amount of air supplied by the air box 2 to each section based on the difference between the preset value and the load value. It includes a second air amount calculation unit 382 that calculates a value, and a second air amount control unit 384 that controls the amount of air supplied by the air box 2 to each section based on the second air amount correction value.

Since the user of the combustion equipment 100 can control the air box 2 based on the specified load value, the incinerator 400 can be stably burned in the combustion equipment 100.

<Third embodiment>
Hereinafter, the combustion equipment 100 according to the third embodiment will be described. The combustion equipment 100 according to the third embodiment specifies the amount of the incinerator 400 charged into the drying stage 21 and controls the amount of air supplied by the secondary air line L2.

FIG. 9 is a schematic block diagram showing the configuration of the control device 300 according to the third embodiment. The configuration of the control device 300 according to the third embodiment includes the determination unit 379, the quantity specifying unit 385, the quantity determination unit 386, and the secondary air control unit in the configuration of the control device 300 according to the first embodiment. 387 and the like are added.

The measuring unit 230 according to the third embodiment is a device for measuring the steam flow rate, the oxygen concentration, and the gas temperature of the processing space V. The acquisition unit 310 acquires the steam flow rate, oxygen concentration, and gas concentration from the measurement unit 230.
The determination unit 379 acquires the burnout point Z from the point identification unit 320, and determines whether or not the burnout point Z is within a preset range.

The amount specifying unit 385 specifies the amount of the incinerator 400 that has flowed into the drying stage 21 based on the processed image acquired by the acquisition unit 310. Specifically, the quantity specifying unit 385 is an image in the area where the preset drying stage 21 is connected to the feeder 31 in the flame fluoroscopic image of the processing space V acquired by the acquisition unit 310 from the camera 220. The amount of the incinerated object 400 is specified by calculating the ratio of the area occupied by the incinerated object 400 in the image corresponding to the area.

The quantity determination unit 386 determines whether or not the amount of the incinerator 400 specified by the quantity identification unit 385 is equal to or greater than a preset value. The threshold value is set to a value that can detect a state in which the incinerator 400 is cleared from clogging in the hopper and a large amount of the incinerator 400 is charged into the furnace main body 10.

When the secondary air control unit 387 determines that the burnout point Z is within the preset range, the determination content of the quantity determination unit 386 and the oxygen concentration and gas temperature acquired by the acquisition unit 310 The amount of air supplied by the secondary air line L2 is controlled based on the above. Specifically, the secondary air control unit 387 controls the amount of air by the following operations.

The determination unit 379 determines that the burnout point Z is within the preset range, and determines that the amount of the incinerator 400 specified by the quantity specifying unit 385 is equal to or greater than the preset value. In this case, the secondary air control unit 387 receives the gas temperature and oxygen concentration from the acquisition unit 310, and receives the amount of the incinerator 400 from the quantity specifying unit 385. The secondary air control unit 387 associates the received amount of the incinerated material 400, the gas temperature, and the oxygen concentration with the preset amount of the incinerated material 400, the gas temperature, the oxygen concentration, and the air amount. The amount of air supplied by the secondary air line L2 is specified in light of the information provided. The secondary air control unit 387 transmits a signal indicating the air amount to the secondary air line L2, and controls the air amount supplied by the secondary air line L2 to the supply amount specified above.

On the other hand, the determination unit 379 determines that the burnout point Z is within the preset range, and determines that the amount of the incinerator 400 specified by the quantity specifying unit 385 is not equal to or more than the preset value. If so, the secondary air control unit 387 receives the gas temperature and oxygen concentration from the acquisition unit 310. The secondary air control unit 387 supplies the received gas temperature and oxygen concentration to the secondary air line L2 in light of the information associated with the preset gas temperature, the oxygen concentration, and the air amount. Identify the amount of air. The secondary air control unit 387 transmits a signal indicating the air amount to the secondary air line L2, and controls the air amount supplied by the secondary air line L2 to the supply amount specified above.

<< Operation related to the control of the secondary air control unit >>
Hereinafter, the operation related to the control of the secondary air control unit 387 will be described. FIG. 10 is a flowchart showing an operation related to the control of the secondary air control unit 387 when the determination unit 379 determines that the burnout point Z is within the preset range. Further, the control of the speed of the grate 61 or the control of the opening degree of the damper of the air box 2 in the third embodiment is the same as the operation according to the first embodiment.

The amount specifying unit 385 specifies the amount of the incinerator 400 that has flowed into the drying stage 21 based on the processed image acquired by the acquisition unit 310 (step S41).
The quantity determination unit 386 determines whether or not the amount of the incinerator 400 specified by the quantity identification unit 385 is equal to or greater than a preset value (step S42).

When it is determined that the amount of the incinerator 400 specified by the amount specifying unit 385 is not equal to or higher than the preset value (step S43: NO), the secondary air control unit 387 receives the gas temperature and the gas temperature from the acquisition unit 310. Accept oxygen concentration. The secondary air control unit 387 supplies the received gas temperature and oxygen concentration to the secondary air line L2 in light of the information associated with the preset gas temperature, the oxygen concentration, and the air amount. Identify the amount of air. The secondary air control unit 387 transmits a signal indicating the air amount to the secondary air line L2, and controls the air amount supplied by the secondary air line L2 to the supply amount specified above (step S44).

On the other hand, when it is determined that the amount of the incinerator 400 specified by the amount specifying unit 385 is equal to or more than a preset value (step S43: YES), the secondary air control unit 387 uses the amount specifying unit 385. The amount of the incinerator 400 is received from, and the gas temperature and oxygen concentration are received from the acquisition unit 310. The secondary air control unit 387 associates the received amount of the incinerated material 400, the gas temperature, and the oxygen concentration with the preset amount of the incinerated material 400, the gas temperature, the oxygen concentration, and the air amount. In light of the information, the amount of air supplied by the secondary air line L2 is specified. The secondary air control unit 387 transmits a signal indicating the air amount to the secondary air line L2, and controls the air amount supplied by the secondary air line L2 to the supply amount specified above (step S45).

By the above operation, the user of the combustion equipment 100 can control the amount of air supplied from the secondary air line L2 even based on the amount of the incinerator 400, and the subject to be burned using the air. The combustion state of the incinerator 400 can be stably maintained.
When a large amount of the incinerator 400 is put into the furnace main body 10, the combustion state becomes unstable, for example, the ratio of the unburned portion of the incinerator 400 in the combustion equipment 100 increases. Therefore, by detecting a state in which a large amount of the incinerator 400 is charged into the furnace body 10 and supplying more air from the secondary air line L2 used for combustion in that state, it is stable. The incinerator 400 can be burned.

《Action / Effect》
The combustion equipment 100 according to the embodiment of the present disclosure further includes a secondary air line L2 that supplies air from above the grate 61, and an amount that specifies the amount of the incinerated material 400 that has flowed into the compartment based on the processed image. Based on the specific unit 385, the amount determination unit 386 that determines whether or not the specified amount is equal to or greater than a preset value, and the content of the determination, the amount of air supplied by the secondary air line L2 is determined. A secondary air control unit 387 for controlling is provided.

The user of the combustion equipment 100 can control the amount of air supplied from the secondary air line L2 even based on the amount of the incinerator 400, and the combustion of the incinerator 400 burned using the air is possible. The state can be maintained stably.

<Fourth Embodiment>
Hereinafter, the combustion equipment 100 according to the fourth embodiment will be described. The combustion equipment 100 according to the fourth embodiment calculates the first speed correction value by using the trained model generated by the burnout point Z, the speed of the grate 61, and the like.

FIG. 11 is a block diagram showing a configuration of the control device 300 according to the fourth embodiment. In addition to the configuration of the control device 300 according to the first embodiment, the configuration of the control device 300 according to the fourth embodiment includes a model generation unit 390, a model storage unit 391, a candidate generation unit 392, and a flow rate calculation unit. 393 and the configuration to be added.

The model generation unit 390 generates a trained model based on a data set consisting of an input input sample and an output sample, and records the trained model in the model storage unit 391. The trained model is a machine learning model trained to output the steam flow rate of the combustion equipment by inputting a combination of a state quantity indicating the state of the combustion equipment and a control amount of the combustion equipment. An example of the operation of the model generation unit 390 will be described below.

As an input sample, the model generation unit 390 has an ignition point in the combustion stage 22, a burnout point Z, a dry state of the dry stage 21, a combustion state of the combustion stage 22, a post-combustion state of the post-combustion stage 23, and oxygen. The concentration, the low calorific value of the incinerated object 400, the pressure value of the storage space V, the gas temperature, the steam flow rate, the opening degree of the damper of the air box 2, the stroke of the dust collector 11, and the drying stage 21. The speed of the grate 61 of the above, the speed of the grate 61 of the combustion stage 22, and the speed of the grate 61 of the post-combustion stage 23 are used. That is, the ignition point in the combustion stage 22, the burnout point Z, the dry state of the dry stage 21, the combustion state of the combustion stage 22, the post-combustion state of the post-combustion stage 23, the oxygen concentration, and the incinerated material 400. The low calorific value, the pressure value of the storage space V, and the gas temperature are state quantities indicating the state of the combustion equipment. Further, the opening degree of the damper of the air box 2, the stroke of the dust collecting device 11, the speed of the grate 61 of the drying stage 21, the speed of the grate 61 of the combustion stage 22, and the grate 61 of the post-combustion stage 23. The speed of is the controlled amount of the combustion equipment. The dry state of the drying stage 21, the combustion state of the combustion stage 22, and the post-combustion state of the post-combustion stage 23 can be specified, for example, by the position or load value of the burnout point Z specified by the point specifying unit 320. can.

Further, the model generation unit 390 uses the steam flow rate as an output sample. The model generation unit 390 performs learning processing of a machine learning model using a data set including the above input sample and the above output sample. Examples of the machine learning model used by the model generation unit 390 include LSTM (Long Short-Term Memory) or GRU (Gated Recurrent Unit). A machine learning model is a function that has a weighting factor inside. The model generation unit 390 generates a trained model by updating the weighting coefficient of the machine learning model so that the output sample can be obtained from the input sample by using the learning method. The model generation unit 390 records the trained model in the model storage unit 391. The trained model is a combination of the machine learning model and the weighting factors updated by the training process.

The model storage unit 391 stores the trained model generated by the model generation unit 390.
The candidate generation unit 392 generates candidates for the velocities of the grate 61 of each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23. For example, the candidate generation unit 392 generates a candidate in which the speed of each grate 61 of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 and the opening rate of the damper of the air box 2 are associated with each other.

The flow rate calculation unit 393 includes a burnout point Z specified by the point identification unit 320, an ignition point in the combustion stage 22, a dry state of the dry stage 21, a combustion state of the combustion stage 22, a post-combustion state of the post-combustion stage 23, and an oxygen concentration. The low calorific value of the incinerated material 400, the pressure value of the storage space V, the gas temperature, and the steam flow rate, and the grate 61 of each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 generated by the candidate generation unit 392. The candidate for the speed of is input to the trained model stored in the model storage unit 391, and the steam flow rate is calculated.

In the first speed calculation unit 330 according to the fourth embodiment, among the speed candidates generated by the candidate generation unit 392, the difference between the measured value of the steam flow rate and the value of the steam flow rate calculated by the flow rate calculation unit 393 is The first speed correction value is calculated based on the candidate that becomes smaller.

For example, the candidate generation unit 392 according to the fourth embodiment sets the reference grate speed and the reference damper opening degree of each of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 based on the combustion state of the combustion equipment 100. calculate. The candidate generation unit 392 generates a plurality of grate speed candidates by adding a correction value based on a predetermined fluctuation width to the reference grate speed. The candidate generation unit 392 generates a plurality of candidates for the damper opening degree by adding a correction value based on a predetermined fluctuation range to the reference damper opening degree.

The flow rate calculation unit 393 sets the burnout point Z specified by the point identification unit 320, the ignition point in the combustion stage 22, the dry state of the drying stage 21, and the combustion state of the combustion stage 22 as state quantities indicating the current state of the combustion equipment 100. , The post-combustion state of the post-combustion stage 23, the oxygen concentration, the low calorific value of the incinerated object 400, the pressure value of the storage space V, the gas temperature, and the steam flow rate are specified. The flow rate calculation unit 393 calculates the steam flow rate for each control amount candidate by using the specified state quantity and the candidate of each control quantity generated by the candidate generation unit 392. The first speed calculation unit 330 determines the grate speed of the control amount candidate having the smallest difference between the steam flow rate calculated for each control amount candidate and the measured value of the steam flow rate as the first speed correction value. do.

In other embodiments, the generation of candidates and the determination of the first velocity correction value may be made, for example, based on a genetic algorithm, or the candidates may be generated based on random numbers. Further, in another embodiment, the candidate generation unit 392 generates one candidate, and the first speed calculation unit 330 updates the value of the candidate so that the difference in steam flow rate becomes small, thereby correcting the first speed. You may ask for the value.

Further, in another embodiment, the state quantity of the combustion equipment 100 input to the trained model may be as long as it includes at least the position of the burnout point Z, and the other state quantities may be changed as appropriate. .. Further, the control amount input to the trained model may include at least the speed of the grate 61 of each section, and other control amounts may be changed as appropriate.

《Action / Effect》
The control device 300 of the combustion equipment 100 according to the present disclosure is from an input sample including the burnout point Z and the velocity of the grate 61 of each section, and an output sample including the steam flow rate due to drying in the incinerated object 400. A model storage unit 391 that stores a trained model learned by supervised learning using a data set, a candidate generation unit 392 that generates velocity candidates of the grate 61 of each section, and a burnout point Z. , A flow rate calculation unit 393 for calculating the steam flow rate by inputting the speed candidates of the grate 61 of each section into the trained model, and the first speed calculation unit 330 is generated by the candidate generation unit 392. Among the speed candidates, the first speed correction value is calculated based on the candidates so that the difference between the measured value of the steam flow rate and the value of the steam flow rate calculated by the flow rate calculation unit 393 becomes small.

The user of the combustion equipment 100 can control the velocity of the grate 61 using a trained model generated in the input sample including the burnout point Z and the velocity of the grate 61 in each section and is stable. Combustion can be performed in the combustion facility 100.

<Fifth Embodiment>
Hereinafter, the combustion equipment 100 according to the fifth embodiment will be described. In addition to the control according to the first embodiment, the combustion equipment 100 according to the fifth embodiment specifies the position of the flame F and controls the secondary air line L2 to change the temperature of the drying stage 21.

FIG. 12 is a flowchart showing the configuration of the control device 300 according to the fifth embodiment. In addition to the configuration of the control device 300 of the first embodiment, the configuration of the control device 300 of the fifth embodiment includes a flame specifying unit 394, a temperature specifying unit 395, a secondary air calculation unit 396, and a second. A secondary air control unit 397 is provided.

The flame specifying unit 394 identifies the position of the flame F based on the processed image acquired by the acquisition unit 310. For example, the flame specifying unit 394 specifies a combustion region based on the brightness of the processed image, identifies a point in the region that minimizes the distance to the drying stage 21, and identifies the ignition point as the position of the flame F. Specify as.

The temperature specifying unit 395 specifies the temperature of the incinerator 400 in the drying stage 21 based on the processed image acquired by the acquisition unit 310. For example, the temperature specifying unit 395 compares the average value of the brightness of the area corresponding to the drying stage 21 in the treatment image with the information associated with the brightness and the temperature, and the incinerated object 400 in the drying stage 21. Identify the temperature.

The secondary air calculation unit 396 determines the amount of secondary air and the amount of secondary air that minimizes the difference between the temperature specified by the temperature specifying unit 395 and the preset value based on the position of the flame F specified by the flame specifying unit 394. Calculate the secondary air supply angle. The secondary air calculation unit 396 calculates by the following operation.
The secondary air calculation unit 396 receives the position of the ignition point, which is the position of the flame F specified by the flame specifying unit 394, and the temperature specified by the temperature specifying unit 395. The secondary air calculation unit 396 calculates the temperature difference by subtracting the received temperature from the preset value.

The secondary air calculation unit 396 determines whether or not the temperature of the drying stage 21 specified by the temperature specifying unit 395 is lower than the target temperature of the drying stage 21 by a predetermined temperature difference or more. Further, the secondary air calculation unit 396 determines whether or not the position of the flame F specified by the flame specifying unit 394 is located after the drying stage 21. The secondary air calculation unit 396 so that the flame position approaches the drying stage 21 when the temperature of the drying stage 21 is lower than the target temperature by a predetermined temperature difference or more and the position of the flame F is located after the drying stage 21. Calculate the amount and angle of secondary air. For example, the secondary air calculation unit 396 stores the amount and angle of the secondary air for bringing the flame closer to the drying stage 21 in advance in relation to the position of the flame F, and the secondary air calculation unit 396 stores the amount and angle of the secondary air specified by the flame identification unit 394. By reading the amount and angle of secondary air associated with the position, the amount and angle of secondary air can be calculated.

The secondary secondary air control unit 397 controls the secondary air line L2 based on the amount and supply angle of the secondary air calculated by the secondary air calculation unit 396. That is, in the secondary secondary air control unit 397, the amount of secondary air supplied by the secondary air line L2 and the supply angle are set to the amount and supply angle of the secondary air calculated by the secondary air calculation unit 396. The angle of the opening of the opening of the damper is controlled so as to be.

《Action / Effect》
The control device 300 of the combustion equipment 100 according to the present disclosure includes a secondary air line L2 that supplies air from above the grate 61, and has a flame specifying unit 394 that specifies the position of the flame F based on a processed image. The amount of secondary air that minimizes the difference between the temperature and the preset value based on the position of the flame F and the temperature specifying unit 395 that specifies the temperature of the incinerated object 400 in the section based on the processed image. A secondary air calculation unit 396 that calculates the supply angle of the secondary air, and a secondary air control unit 397 that controls the secondary air line L2 based on the calculated amount and the supply angle are provided.

Since the user of the combustion equipment 100 can control the amount of secondary air and the supply angle by the position of the flame F, the mode of the flame F can be changed to approach the drying stage 21, and the incinerator 400 in the section can be treated. Can be performed stably.

<Other embodiments>
Although one embodiment has been described in detail with reference to the drawings, the specific configuration is not limited to the above-mentioned one, and various design changes and the like can be made.

The control device 300 of the combustion equipment 100 may separately control the drying stage 21, the combustion stage 22, and the post-combustion stage 23. For example, only the drying stage 21 may be controlled, or the drying stage 21, the combustion stage 22, and the post-combustion stage 23 may be collectively controlled. Further, the plurality of air boxes 2 in the drying stage 21, the combustion stage 22, and the post-combustion stage 23 may be prioritized and controlled.

FIG. 13 is a schematic block diagram showing the configuration of a computer according to at least one embodiment.
The computer 1100 includes a processor 1110, a main memory 1120, a storage 1130, and an interface 1140.
The control device 300 described above is mounted on the computer 1100. The operation of each of the above-mentioned processing units is stored in the storage 1130 in the form of a program. The processor 1110 reads a program from the storage 1130, expands it into the main memory 1120, and executes the above processing according to the program. Further, the processor 1110 secures a storage area corresponding to each of the above-mentioned storage units in the main memory 1120 according to the program.

The program may be intended to realize some of the functions exerted by the computer 1100. For example, the program may exert its function in combination with another program already stored in the storage 1130, or in combination with another program mounted on another device. In another embodiment, the computer 1100 may include a custom LSI (Large Scale Integrated Circuit) such as a PLD (Programmable Logic Device) in addition to or in place of the above configuration. Examples of PLDs include PAL (Programmable Array Logic), GAL (Generic Array Logic), CPLD (Complex Programmable Logic Device), and FPGA (Field Programmable Gate). In this case, some or all of the functions realized by the processor 1110 may be realized by the integrated circuit.

Examples of the storage 1130 include magnetic disks, magneto-optical disks, semiconductor memories, and the like. The storage 1130 may be internal media directly connected to the bus of computer 1100, or external media connected to the computer via interface 1140 or a communication line. When this program is distributed to the computer 1100 via a communication line, the distributed computer 1100 may expand the program to the main memory 1120 and execute the above processing. In at least one embodiment, the storage 1130 is a non-temporary tangible storage medium.

Further, the program may be for realizing a part of the above-mentioned functions. Further, the program may be a so-called difference file (difference program) that realizes the above-mentioned function in combination with another program already stored in the storage 1130.

<Additional Notes>
The control device 300 of the combustion equipment 100 described in each embodiment is grasped as follows, for example.

(1) The control device 300 of the combustion equipment 100 according to the present disclosure includes a furnace main body 10 that defines the processing space V, a grate 61 that conveys the incinerated material 400 in the transportation direction Da in the processing space V, and a processing space. A control device 300 of a combustion facility 100 including a wind box 2 for supplying air to V, an image acquisition unit for acquiring a processed image in which a section in which the processing space V is partitioned in the transport direction Da is captured, and a processed image. Based on the point specifying portion 320 that identifies the burnout point Z, which is the rear end of the flame F due to the combustion of the incinerated object 400 in the transport direction, and the speed of the grate 61 of the section based on the burnout point Z. The first speed calculation unit 330 for calculating the first speed correction value, which is the correction value of the above, and the speed control unit 360 for controlling the speed of the grate 61 of the section based on the first speed correction value are provided.

Since the user of the combustion equipment 100 can control the speed of the grate 61 based on the specified burnout point Z, the incinerator 400 can be stably burned in the combustion equipment 100.

(2) Further, each section of the control device 300 of the combustion facility 100 in which the processing space V is partitioned is a drying stage 21, a combustion stage 22, and a post-combustion stage 23 from the upstream side of the transport direction Da. The image acquisition unit acquires a processed image showing the drying stage 21, the combustion stage 22, and the post-combustion stage 23, and the first speed calculation unit 330 captures the drying stage 21, the combustion stage 22, and the post-combustion stage 23, respectively. The first speed correction value is calculated, and the speed control unit 360 controls the speed of the grate 61 of the drying stage 21, the combustion stage 22, and the post-combustion stage 23 based on each of the first speed correction values.

Since the user of the combustion equipment 100 can control the speed of the grate 61 based on the specified burnout point Z, the incinerator 400 is stably dried, burned, and post-combusted in the combustion equipment 100. be able to.

(3) Further, the control device 300 of the combustion equipment 100 is a first air amount calculation unit that calculates a first air amount correction value which is a correction value of the air amount to be supplied to each section based on the burnout point Z. A 340 and an air amount control unit 370 that controls the amount of air supplied by the air box 2 to each section based on the first air amount correction value are provided.

Since the user of the combustion equipment 100 can control the air box 2 based on the specified burnout point Z, the incinerator 400 can be stably dried, burned, and post-combusted in the combustion equipment 100. can.

(4) The control device 300 of the combustion equipment 100 according to the present disclosure is based on at least one of the brightness of the processed image, the water content of the incinerated object 400, and the low calorific value of the incinerated object 400. It is a correction value of the speed of the grate 61 of each section based on the difference between the load value specifying unit 380 that specifies the load value, which is a value indicating the load state of, and the preset value and the load value. 2. A second speed calculation unit 381 that calculates a speed correction value, and a second speed control unit 383 that controls the speed of the grate 61 of each section based on the second speed correction value are provided.

Since the user of the combustion equipment 100 can control the speed of the grate 61 based on the specified load value, the incinerator 400 can be stably burned in the combustion equipment 100.

(5) The control device 300 of the combustion equipment 100 according to the present disclosure is a second correction value of the amount of air supplied by the air box 2 to each section based on the difference between the preset value and the load value. A second air amount calculation unit 382 that calculates an air amount correction value, and a second air amount control unit 384 that controls the amount of air supplied by the air box 2 to each section based on the second air amount correction value. To prepare for.

Since the user of the combustion equipment 100 can control the air box 2 based on the specified load value, the incinerator 400 can be stably burned in the combustion equipment 100.

(6) The combustion equipment 100 according to the embodiment of the present disclosure is further provided with a secondary air line L2 for supplying air from above the grate 61, and the amount of the incinerated material 400 flowing into the section is determined based on the processed image. The specified amount specifying unit 385, the amount determining unit 386 that determines whether or not the specified amount is equal to or more than a preset value, and the secondary air line L2 supply based on the content of the determination. A secondary air control unit 387 that controls the amount of air is provided.

The user of the combustion equipment 100 can control the amount of air supplied from the secondary air line L2 even based on the amount of the incinerator 400, and the combustion of the incinerator 400 burned using the air is possible. The state can be maintained stably.

(7) The control device 300 of the combustion equipment 100 according to the present disclosure includes an input sample including the burnout point Z and the velocity of the grate 61 of each section, and the steam flow rate due to drying in the incinerated object 400. A model storage unit 391 that stores a trained model learned by supervised learning using a data set consisting of output samples, a candidate generation unit 392 that generates velocity candidates of the grate 61 of each section, and a burnout unit. A flow rate calculation unit 393 for calculating a steam flow rate by inputting a point Z and a speed candidate of the grate 61 of each section into a trained model is provided, and the first speed calculation unit 330 is a candidate generation unit 392. Among the speed candidates generated by the above, the first speed correction value is calculated based on the candidates so that the difference between the measured value of the steam flow rate and the value of the steam flow rate calculated by the flow rate calculation unit 393 becomes small.

The user of the combustion equipment 100 can control the velocity of the grate 61 using a trained model generated in the input sample including the burnout point Z and the velocity of the grate 61 in each section and is stable. Combustion can be performed in the combustion facility 100.

(8) The control device 300 of the combustion equipment 100 according to the present disclosure includes a secondary air line L2 that supplies air from above the grate 61, and is a flame specifying unit that specifies the position of the flame F based on the processed image. 394, a temperature specifying unit 395 that specifies the temperature of the incinerated object 400 in the section based on the processed image, and a secondary that minimizes the difference between the temperature and the preset value based on the position of the flame F. A secondary air calculation unit 396 that calculates the amount of air and the supply angle of the secondary air, and a secondary air control unit 397 that controls the secondary air line L2 based on the calculated amount and the supply angle. To prepare for.

Since the user of the combustion equipment 100 can control the amount of secondary air and the supply angle by the position of the flame F, the mode of the flame F can be changed to approach the drying stage 21, and the incinerator 400 in the section can be treated. Can be performed stably.

(9) The method for controlling the combustion equipment according to the present disclosure is to use the furnace body 10 that defines the processing space V, the grate 61 that conveys the incinerated material 400 in the transport direction Da in the processing space V, and the processing space V. In the control device 300 of the combustion equipment 100 including the air box 2 for supplying air, the step of acquiring a processed image in which the section in which the processing space V is partitioned in the transport direction Da is captured, and the incineration based on the processed image. First speed correction, which is a correction value of the speed of the grate 61 of the section, based on the step of specifying the burnout point Z, which is the rear end of the flame F due to the combustion of the object 400 in the transport direction, and the burnout point Z. It has a step of calculating a value and a step of controlling the speed of the grate 61 of the section based on the first speed correction value.

Since the user of the control method of the combustion equipment 100 can control the speed of the grate 61 based on the specified burnout point Z, the incinerator 400 can be stably burned in the combustion equipment 100. can.

(10) The program of the combustion equipment 100 according to the present disclosure includes a furnace main body 10 that defines the processing space V, a grate 61 that conveys the incinerated material 400 in the transport direction Da in the processing space V, and the processing space V. Based on the step of acquiring a processed image of the control device 300 of the combustion equipment 100 including the air box 2 for supplying air and the section in which the processing space V is partitioned in the transport direction Da, and the processed image. The step of specifying the burnout point Z, which is the rear end of the flame F due to the combustion of the incinerated object 400 in the transport direction, and the correction value of the speed of the grate 61 of the section based on the burnout point Z. 1 The step of calculating the speed correction value and the step of controlling the speed of the grate 61 of the section based on the first speed correction value are executed.

Since the user of the program of the combustion equipment 100 can control the speed of the grate 61 based on the specified burnout point Z, the incinerator 400 can be stably burned in the combustion equipment 100. ..

1 Stoker furnace 2 Air box 3 Hopper 4 Gas circulation part 6 Stoker 7 Fire furnace 8 Exhaust heat recovery boiler 9 Cooling tower 10 Furnace body 11 Dust collector 12 Chimney 13 Discharge chute 21 Drying stage 22 Combustion stage 23 Post-combustion stage 31 Feeder 61 Grate 61A Fixed grate 61B Movable grate 100 Combustion equipment 300 Control device 310 Acquisition unit 320 Point identification unit 330 1st speed calculation unit 340 1st air volume calculation unit 350 Flow concentration calculation unit 360 Speed control unit 370 Air volume control unit 379 Judgment unit 380 Load value specification unit 381 Second speed calculation unit 382 Second air volume calculation unit 383 Second speed control unit 384 Second air volume control unit 385 Quantity specification unit 386 Volume determination unit 387 Secondary air control unit 390 model Generation unit 391 Model storage unit 392 Candidate generation unit 393 Flow calculation unit 394 Flame specification unit 395 Temperature specification unit 396 Secondary air calculation unit 397 Secondary air control unit 400 Incinerated material 1100 Computer 1110 Processor 1120 Main memory 1130 Storage 1140 Interface L1 Primary air line L2 Secondary air line B1 Blower F Flame Z Burnout point

Claims (8)

A control device for combustion equipment including a furnace body that defines a processing space, a grate that conveys incinerators in the processing space in the transport direction, and a wind box that supplies air to the processing space.
An image acquisition unit that acquires a processed image in which the processing space is divided in the transport direction.
Based on the processed image, a point specifying portion for specifying a burnout point, which is the rear end of the flame due to combustion of the incinerator in the transport direction, and
A first speed calculation unit that calculates a first speed correction value, which is a correction value for the speed of the grate in the section, based on the burnout point.
A speed control unit that controls the speed of the grate of the section based on the first speed correction value, and
A load value specifying unit that specifies a load value, which is a value indicating a load state of each of the sections, based on the brightness of the processed image.
A second speed calculation unit that calculates a second speed correction value, which is a correction value for the speed of the grate in each of the sections, based on the difference between the preset value and the load value.
A second speed control unit that controls the speed of the grate of each of the sections based on the second speed correction value,
A first air amount calculation unit that calculates a first air amount correction value, which is a correction value of the amount of air supplied to each of the sections, based on the burnout point.
Based on the steam flow rate and oxygen concentration in the processing space measured by the measuring unit, the steam flow rate correction value and the oxygen concentration correction value are calculated, and the steam flow rate correction value and the oxygen concentration correction value are added. A flow rate concentration calculation unit that calculates the basic correction value obtained in 1 as a correction value for the amount of air supplied to each of the sections.
An air amount control unit that controls the amount of air supplied by the air box to each of the sections based on the first air amount correction value and the basic correction value.
Combustion equipment control device equipped with. Each of the compartments in which the processing space is partitioned is a drying stage, a combustion stage, and a post-combustion stage from the upstream side in the transport direction.
The image acquisition unit acquires a processed image showing the drying stage, the combustion stage, and the post-combustion stage.
The first speed calculation unit calculates the first speed correction value of each of the drying stage, the combustion stage, and the post-combustion stage.
The control device for combustion equipment according to claim 1, wherein the speed control unit controls the speeds of the grate of the drying stage, the combustion stage, and the post-combustion stage based on each of the first speed correction values. .. With a second air amount calculation unit that calculates a second air amount correction value that is a correction value of the air amount supplied to each of the sections by the air box based on the difference between the preset value and the load value. ,
A second air amount control unit that controls the amount of air supplied by the air box to each of the sections based on the second air amount correction value.
The control device for combustion equipment according to claim 1 or 2 . The combustion equipment further comprises a secondary air line that supplies air from above the grate.
An amount specifying unit that specifies the amount of the incinerator that has flowed into the section based on the processed image.
An amount determination unit that determines whether or not the specified amount is equal to or greater than a preset value.
A secondary air control unit that controls the amount of air supplied by the secondary air line based on the content of the determination.
The control device for combustion equipment according to any one of claims 1 to 3 . Learned by supervised learning using a dataset consisting of an input sample containing the burnout point and the velocity of the grate in each compartment and an output sample containing the steam flow due to drying in the incinerated object. A model storage unit that stores the trained model
A candidate generator that generates candidates for the velocity of the grate in each of the sections,
A flow rate calculation unit that calculates the steam flow rate by inputting the burnout point and the velocity candidate of the grate of each of the sections into the trained model.
Equipped with
The first speed calculation unit is such that the difference between the measured value of the steam flow rate and the value of the steam flow rate calculated by the flow rate calculation unit among the speed candidates generated by the candidate generation unit is small. The control device for a combustion facility according to any one of claims 1 to 4, wherein the first speed correction value is calculated based on the candidate. The control device for the combustion equipment includes a secondary air line that supplies secondary air from above the grate.
Based on the processed image, the flame specifying part that specifies the position of the flame, and
A temperature specifying unit that specifies the temperature of the incinerator in the section based on the processed image,
A secondary air calculation unit that calculates the amount of the secondary air and the supply angle of the air that minimizes the difference between the temperature and the preset value based on the position of the flame.
A secondary air control unit that controls the secondary air line based on the calculated amount and supply angle.
The control device for combustion equipment according to any one of claims 1 to 3 . In a control device for combustion equipment including a furnace body that defines a processing space, a grate that conveys incinerators in the processing space in the transport direction, and a wind box that supplies air to the processing space.
A step of acquiring a processed image in which the processing space is divided in the transport direction, and
Based on the processed image, a step of identifying a burnout point, which is a rear end of the flame due to combustion of the incinerator, in the transport direction, and
A step of calculating a first speed correction value, which is a correction value of the speed of the grate of the section, based on the burnout point.
A step of controlling the speed of the grate of the section based on the first speed correction value, and
A step of specifying a load value, which is a value indicating a load state of each of the sections, based on the brightness of the processed image, and
A step of calculating a second speed correction value, which is a correction value of the speed of the grate of each of the sections, based on the difference between the preset value and the load value.
A step of controlling the speed of the grate of each of the sections based on the second speed correction value, and
A step of calculating a first air amount correction value, which is a correction value of the amount of air supplied to each of the sections, based on the burnout point, and
Based on the steam flow rate and oxygen concentration in the processing space measured by the measuring unit, the steam flow rate correction value and the oxygen concentration correction value are calculated, and the steam flow rate correction value and the oxygen concentration correction value are added. The step of calculating the basic correction value obtained in 1 as the correction value of the amount of air supplied to each of the above sections, and
A step of controlling the amount of air supplied by the air box to each of the sections based on the first air amount correction value and the basic correction value, and
How to control the combustion equipment. To the computer of the control device of the combustion equipment including the furnace body that defines the processing space, the grate that conveys the incinerated material in the transportation direction in the processing space, and the air box that supplies air to the processing space.
A step of acquiring a processed image in which the processing space is divided in the transport direction, and
Based on the processed image, a step of identifying a burnout point, which is a rear end of the flame due to combustion of the incinerator, in the transport direction, and
A step of calculating a first speed correction value, which is a correction value of the speed of the grate of the section, based on the burnout point.
A step of controlling the speed of the grate of the section based on the first speed correction value, and
A step of specifying a load value, which is a value indicating a load state of each of the sections, based on the brightness of the processed image, and
A step of calculating a second speed correction value, which is a correction value of the speed of the grate of each of the sections, based on the difference between the preset value and the load value.
A step of controlling the speed of the grate of each of the sections based on the second speed correction value, and
A step of calculating a first air amount correction value, which is a correction value of the amount of air supplied to each of the sections, based on the burnout point, and
Based on the steam flow rate and oxygen concentration in the processing space measured by the measuring unit, the steam flow rate correction value and the oxygen concentration correction value are calculated, and the steam flow rate correction value and the oxygen concentration correction value are added. The step of calculating the basic correction value obtained in 1 as the correction value of the amount of air supplied to each of the above sections, and
A step of controlling the amount of air supplied by the air box to each of the sections based on the first air amount correction value and the basic correction value, and
A program to execute.

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